JPS59125342A - Air conditioning-ventilating device of combined use for smoke exhausting in building - Google Patents

Abstract

PURPOSE:To improve the performance of a smoke exhausting, contrive to obtain the high safety and reliability and provide the economical air conditioning.ventilating device of combined use for smoke exhausting by a method wherein an intake passage or an exhaut passage are utilized for a smoke exhausting passage by the open/close changing-over of a damper. CONSTITUTION:An outer side position of a damper A1 of an open air passage 4 and an air conditioner side position of a damper A2 of an intake passage 10 are communicated with a by-pass 12 having a damper B1. Further, an outer side position of the A2 of the intake passage 10 and a casing 8 provided with an intake fan 7 are communicated with a by-pass passage 12a having a damper B4. At the exhausting of a smoke inside of a building, each damper is switched- over, the smoke can be exhausted via the by-pass 12a, 12 without passing through a coil.filter.eliminator part 6. Due to the large resitance at the sucking of the smoke through an intake port 11, a branch passage 13 having a damper B2 is arranged nearby the intake port, then the smoke can be sucked through said branch passage.

Description

[Detailed Description of the Invention] [Iguha IlJ] is a smoke evacuation and +1 system for buildings in which the air supply route for air conditioning can be used as an exhaust/frame route.
Regarding J's air conditioning ventilation system 7.

The Building Standards Act requires certain buildings to install smoke exhaust equipment in order to ensure complete evacuation safety in the event of a fire.

As a conventional smoke evacuation system for buildings, smoke evacuation machines are installed on the upper floors, and smoke can be inhaled through the single-panel entrances provided on each floor. However, in this case, the smoke exhaust port would be opened to the upper floor, resulting in insufficient smoke exhaust capacity on the fire floor. Because many of the entrances to Ushida Kataita are cleared, the non-fire floor C draws smoke from the fire floor! It had some drawbacks, such as being surrounded by a fence and not being used on a daily basis, so there were doubts as to whether it would work properly.

It is also conceivable that a shallow smoke outlet be installed on each floor, inhaling the smoke through the single-panel entrance on each floor, and exhausting the smoke through the 4:1 smoke outlet on each floor.

However, in this case as well, a room with a smoke exhaust system was required on each floor, making it difficult to use fruit between rooms, making it economically undesirable.

Therefore, an object of the present invention is to provide an economical air-conditioning/ventilation system that can improve smoke exhaust performance, provide high safety and reliability, and also serve as an economical smoke exhaust system.

Next, a first embodiment of the present invention will be described with reference to FIG. 1.2.

An air conditioner 2 of a building 1 having a large number of stores has a -to inlet 3 connected to an outside air passage 4 such as a duct having a damper A]. A heat exchanger 5 is installed inside the inlet of the air conditioner 2.
A passage continues to the air supply outlet 9 via a casing 8 provided with a coil filter eliminator section 6 and an air supply fan 7. Note that the air supply fan 7 has an air supply volume of 30 m° or more per 1 m2 per hour. Air supply passage 1 having an air supply outlet 9 and a damper A2
0 communicates with an air supply port 11 provided on the ceiling of the building 1, and under normal conditions, conditioned air is supplied from the air conditioner 2 into the room of the building via the air supply port 1.

The position outside damper AI of outside air passage 4 and the air supply passage 1
0's position closer to the air conditioner than damper A2,
It communicates by a bypass passage 12 with B1. Furthermore, the outside position of A2 of the air supply passage 10 and the casing 8 provided with the air supply fan 7 are communicated by a bypass passage 12a having a damper B4, and when exhausting smoke inside the building, each damper is connected. By switching the bypass passage 12a without passing through the coil filter eliminator section 6,
Smoke can be evacuated through 12. Since there is a large resistance to sucking smoke from the air supply port (1), a branch passage 13 having a damper 82 is provided near the air supply port so that smoke can be sucked from the branch passage.

A return air port 14 is provided in the ceiling of the building 1, and the return air port 14
communicates with an air conditioner inlet 16 via an air passage 15 having a damper A3, and the inlet 16 is connected to a heat exchanger 17,
The damper A 4 communicates with an exhaust port 19 of the air conditioner via an exhaust fan 18, and the air can be discharged to the atmosphere through an exhaust passage communicating with the exhaust port 19. Note that the exhaust air volume of the exhaust fan 18 is 1 m2 for 1 hour, and is 3o7n2 or more. A chamber provided with an exhaust fan of the air conditioner and a position outside the damper Aa of the return air passage 15 are communicated by a passage having a damper 83; 20;
When a fire or the like occurs in a building, the opening and closing states of dampers A3 and B3 are switched so that smoke can be exhausted to the atmosphere through a passage 20 without passing through a heat exchanger 17.

When a fire breaks out in a certain building, a control panel 22 is activated to open and close each damper by operating a smoke detector or a manual starting device 21. In normal times, the dampers As to A4 are open and the dampers 81 to B4 are closed, but in the event of a fire, the dampers A1 to A4 are closed and the dampers B1 to B3 are opened.

The air conditioning ventilation system of the first embodiment is configured as described above, and normally dampers A1 to A4 (white circles) are open and dampers 81 to B4 (black circles) are closed as shown in FIG. is in a state. Therefore, the outside air is supplied to the intake port 3, the heat exchanger 5, the coil filter eliminator section 6, the air supply fan 7,
Conditioned air is supplied into the building via the air supply passage 10. Return air inside the building is supplied through a return air port 14, a return air passage 15, and a heat exchanger 1.
7. It is exhausted to the atmosphere via the exhaust fan 18.

In addition, if a fire occurs in building 1, the starting device -
σ21 is operated, and the open/closed state of each damper is switched as shown in FIG. 2, contrary to the normal state (white circles indicate open, black circles indicate closed). Therefore, smoke inside the building does not pass through the coil filter eliminator section 6 through the branch passage 13, the air supply passage 10, the bypass passage 12a1, the air supply 7, the bypass passage 2, and the outside air passage 4. Emitted into the atmosphere. Smoke is also sucked in from the ridged return air port 14 and discharged to the atmosphere via the N1 return air passage 15, the passageway, and the exhaust fan 18.

As described above, in the first embodiment, the smoke inside the building can be exhausted not only through the exhaust route but also using the air supply route, so that the smoke can be quickly exhausted.

In addition, since the supply air fan can be used for smoke evacuation, there is sufficient smoke evacuation capacity without the need for a separate smoke evacuation fan, and smoke does not pass through the air conditioner's coils, filters, eliminators, etc. Since it passes through the bypass passage, the smoke exhaust resistance is small and the +Ik device of the air conditioner will not be damaged. Furthermore, since the passage or fan through which smoke passes during a fire is normally used, its operation is reliable and consistent, improving safety.

Next, a second embodiment will be explained with reference to FIG. 3.4. In this embodiment, a ventilation system in a room without air conditioning equipment, such as a parking lot in a building, is used as a smoke exhaust system. As an air supply path, an outside air intake passage 2:3 having a damper A5 is communicated with an air supply fan 24.
The outlet of 4 is the air supply jfi h'f5 with damper A6
There is an air supply port 26 that opens at a suitable location on the ceiling of the parking lot, and fresh outside air is supplied from there. A bypass passage 27 is provided in parallel with the air supply fan 24 and the damper A5, and a bypass passage y is provided in parallel with the air supply fan 24 and the damper A6. Dampers B5 and B6 are provided respectively. Under normal conditions, dampers A5 and A6 are open, and dampers 135 and B6 are open.
When the parking lot is closed and a fire occurs, the open/closed state of the four dampers can be switched in the opposite direction (state in Figure 4), similar to the first implementation (+I).There are several dampers on the ceiling of the parking lot. Exhaust port 2
9 is provided, and these are connected to an exhaust passage 31 having an exhaust fan 30, so that return air within the building can be discharged to the atmosphere. In addition, air supply fan 24, exhaust fan 772:3 tD l & 414.1 hours, 1 pt?
V) 30 yr? Jd upper (use D mo).

In the second embodiment configured as described above, under normal conditions, fresh air is supplied to the parking lot through the intake passage 23, the air supply fan 24, and the air supply passage 25, and is supplied through the exhaust passage 1. Return air is exhausted to the atmosphere. When a fire breaks out in the parking lot, the four dampers are switched between open and close (state in Figure 4).
Smoke in the parking lot is discharged to the atmosphere through the air supply passage, the bypass passage, the air supply fan 24, the bypass passage 27, and the suction passage 23.

In this case, smoke is also exhausted from the exhaust passage 31 in the same way as in normal times.

Therefore, in the second embodiment, sufficient smoke can be removed without separately installing a smoke exhaust fan, and since the ventilation route used in normal times is used, smoke can be removed reliably and safety is improved. .

Next, a third embodiment will be explained with reference to FIG. 5.6. In this embodiment, an air conditioner with a large-capacity fan, such as in a movie theater in a building, is used in the smoke exhaust path. Air conditioner 3
The outside air intake port 33 of No. 2 is communicated with the atmosphere via an intake passage 34 having a damper A7, and is connected to the air intake port 3 of the air conditioner 32.
5 communicates through an air supply passage 36 with an air supply port 37 provided in the ceiling of the building. In the air conditioner, a heat exchanger 38, a coil filter eliminator section 39, and an air supply fan 40 are provided between the inlet 3:3 and the outlet 35.

A return air port . The suction port l13 communicates with the exhaust port 4G of the air conditioner via the damper A9, the heat exchanger 44, and the exhaust fan 45, and the exhaust port 46 communicates with the atmosphere via an exhaust passage 47 having a damper AIO. . Further, the suction port 43 is communicated with one suction port of an exhaust fan 615 via a damper 89. In addition, the exhaust fan 15 (d) is used with a large capacity, that is, an exhaust air volume of 60 m or more per hour + hL 1 m, since it is applied to a movie theater.

A single board 48 is installed on the ceiling of a building, and the single board 48 is connected to the damper A8 of the return air passage 12 and the air conditioner in the open position ( [
Ren l! i1, 几, and smoke exhaust passage 49 is damper B8
It communicates with a natural smoke exhaust duct 50 having a. Normal time,
Dampers A7 to Ago are closed, and dampers 87 to B are closed.
9 is in the closed deaf state, and when a fire breaks out in the building, the opening/closing state of each damper is switched to open or closed, contrary to the normal state, as in the first embodiment.

The third embodiment is configured as described above, and when normal (, -1:
Conditioned air is supplied into the building via the intake passage 34, the heat exchanger 38, the coil filter eliminator 39, the air supply fan 10, and the air supply passage 36, and the air filter passage 42, the intake port 43, Damper A9, heat exchanger 44, exhaust fan 45
, exhausts return air to the atmosphere via exhaust passage-17.

When a fire occurs inside a building, the opening/closing state of each damper changes from the state shown in Figure 5 to the state shown in Figure 6 (white circles are open, black circles are closed), and conditioned air is discharged from the air supply port 37. You can also
Inhalation of smoke is also blocked. And one piece of the ceiling every day...
[8 is smoke exhaust passage/19, intake port/13, damper 89,
It is exhausted to the atmosphere via the exhaust fan 45 and the exhaust passage 47.

Therefore, in the third embodiment, even if a fire occurs in a building without installing a smoke exhaust fan or duct,
Inu'tani: 411 enough using Tsuji's IJ fan
I can smoke.

See you again! 1 Always use the exhaust route of the air conditioner to exhaust smoke 6
Since it is used conveniently, its operation is reliable and safety is improved.

[Brief explanation of drawings]

Fig. 1.2 ('J System diagram of Honkamei's air-conditioning system that also serves as smoke exhaust and during fire; Figure 5.6 shows the system diagram at the time of a fire. 1. This is the system diagram at the normal time and at the time of a fire in the 3rd embodiment.・Air supply fan,
10... Air supply] Φ path, 15 Return air passage, 18... Exhaust fan, AI, A2-. AIo・Damper, BL
, 82~B9・Dan2gu - Applicant Takenaka Corporation

Claims (1)

[Claims] Outside air f: Inhaled by an air supply fan such as an air conditioner FS, and also fed into the building via an air supply passage (4C air is supplied, and via a lid air passageway that has a fan for exhausting all return air inside the building) In air-conditioning ventilation equipment that is exposed to the atmosphere, a smoke exhaust passage is provided between the front and back of the air supply fan (or exhaust fan), and appropriate locations in front of, after, and in the smoke exhaust passage of each fan). Part 1
A damper that can be opened and closed is provided for each of the dampers.
4'-1 +-V air supply passageway or IJI lid air passageway'' 1- An air conditioning and ventilation system for smoke exhausting in a building, characterized in that it can be used as a smoke passageway.