WO2015136691A1

WO2015136691A1 - Smoking area isolation system and smoking area isolation method

Info

Publication number: WO2015136691A1
Application number: PCT/JP2014/056923
Authority: WO
Inventors: 茂美増野; 利佳寿向井; 弘樹中合; 敏雄相澤
Original assignee: 日本たばこ産業株式会社
Priority date: 2014-03-14
Filing date: 2014-03-14
Publication date: 2015-09-17

Abstract

A smoking area isolation system for implementing a smoking area isolation method according to the present invention comprises: a boundary entrance/exit opening (20) that is formed in a smoking area separation boundary dividing a non-smoking room (16), which is a non-smoking compartment, and a smoking room (18), which is a smoking compartment, so as to link the non-smoking room (16) and the smoking room (18); an air supply/discharge device (32) that discharges air from the smoking room (18) while supplying air to the non-smoking room (16) so as to cause air to flow from the non-smoking room (16) toward the smoking room (18) at the boundary entrance/exit opening (20) and thereby generate a boundary passing flow (BPF); an air blowing device (24) that blows air from a position above the boundary entrance/exit opening (20) toward the smoking room (18) at a downward slanting direction so as to form an air curtain (AC) in the smoking room (18); and a blocking device (38) or a blocking plate (40) that blocks the flow of air from the smoking room (18) toward the boundary entrance/exit opening (20) through a gap (G) between the air curtain (AC) and the boundary entrance/exit opening (20) created by the slant of the air curtain.

Description

Smoke separation system and smoke separation method

The present invention relates to a smoke distribution system and a smoke distribution method that achieve effective smoke distribution of tobacco smoke between a non-smoking compartment and a smoking compartment.

In recent years, various smoke distribution systems have been developed that are applied to shared spaces such as offices and restaurants where smokers and smokers come and go together. For example, this type of smoke distribution system includes a non-smoking room and a smoking room respectively assigned to two common spaces adjacent to each other, or includes a non-smoking room and a smoking room partitioned in one common space, It has a smoke separation function that prevents tobacco smoke from entering the non-smoking room.

In order to achieve such a smoke separation function, the smoke separation system is equipped with an air supply / exhaust facility. This supply / discharge facility supplies air to the non-smoking room and the smoking room, while discharging air from the non-smoking room and the smoking room. Such supply and discharge of air generates a flow of air from the non-smoking room to the smoking room at a boundary entrance between the non-smoking room and the smoking room, that is, a so-called boundary passing flow. The boundary entrance is located at a smoke separation boundary that separates the non-smoking room and the smoking room, and communicates the non-smoking room and the smoking room with each other.

In addition, the smoke distribution system can include an air curtain at the boundary entrance. The air curtain is preferably formed obliquely on the smoking room side (see, for example, FIG. 9A of Patent Document 1). With such an air curtain, part of the air flow forming the air curtain does not enter the non-smoking room from the smoking room through the boundary entrance. Therefore, it is considered that the boundary flow and the oblique air curtain can effectively prevent the backflow of air from the smoking room to the non-smoking room.

JP 2006-328842 A

Specifically, the smaller the inclination angle of the air curtain described above, the more the air flow forming the air curtain reaches the floor of the non-smoking room, a part of the air flow back into the non-smoking room through the boundary entrance. easy. For this reason, in order to avoid such a backflow of air, the larger the inclination angle of the air curtain, the better. However, in this case, the air curtain moves away from the boundary entrance as it approaches the floor of the smoking room, and a large gap is generated between the air curtain and the boundary entrance. Since such a gap is opened on each side edge of the air curtain, tobacco smoke floating in the smoking room goes to the boundary entrance through the gap and leaks into the non-smoking room through this boundary entrance. Therefore, effective smoke separation between the non-smoking room and the smoking room is impossible only by the boundary flow and the oblique air curtain described above.

An object of the present invention is to provide a smoke separation system and a smoke separation method capable of achieving effective smoke separation between a non-smoking room and a smoke room only by combining a simple structure with the above-described boundary flow and air curtain. There is.

The above objective is accomplished by a smoke distribution system of the present invention having a boundary entrance at a smoke boundary that separates a non-smoking compartment and a smoking compartment, the smoke separation system comprising:
An air supply that includes an exhaust port for exhausting air in the smoking compartment and an air supply port for supplying air to the non-smoking compartment, and generates air flow from the non-smoking compartment to the smoking compartment as a boundary passing flow at the boundary entrance A drainage device;
An air blowing device that blows air obliquely downward from the upper or upper position of the boundary doorway and forms an air curtain for the boundary doorway in the smoking compartment;
And a shielding device that shields the flow of air from the smoking compartment side toward the boundary entrance through a gap between the air curtain generated due to the inclination of the air curtain and the boundary entrance.

Since the smoke distribution system described above is equipped with a shielding device, the air curtain can be greatly inclined. In this case, after the air flow forming the air curtain reaches the floor surface of the smoking compartment, a base flow is formed along the floor surface and away from the boundary entrance.

On the other hand, since the above-mentioned boundary flow flows from the non-smoking compartment to the smoking compartment through the boundary entrance / exit, such a boundary passage flow assists the above-described base flow and prevents part of the base flow from moving toward the boundary entrance / exit. To do. Therefore, even if the tobacco smoke component in the smoking compartment is taken into the air flow forming the air curtain, the tobacco smoke component leaks into the non-smoking compartment through the boundary entrance and exit along with a part of the base flow. There is no.

As described above, if the air curtain is greatly inclined, the above-described gap is generated between the air curtain and the boundary entrance in the smoking compartment. However, since such a gap is closed by the shielding device of the present invention, air in the smoking compartment does not go to the boundary entrance through the shielding device. As a result, air containing tobacco smoke in the smoking compartment does not leak into the non-smoking compartment through the boundary entrance.

On the other hand, the present invention also provides a smoke separation method implemented by the above-described smoke separation system. That is, the smoke separation method of the present invention is
While exhausting air from the smoking compartment through the exhaust port, air is supplied to the non-smoking compartment through the air supply port, thereby generating a boundary flow of air from the non-smoking compartment to the smoking compartment at the boundary entrance. Process,
Blowing the air obliquely downward from the upper or upper position of the boundary doorway, forming an air curtain for the boundary doorway in the smoking compartment; and
A shielding step of shielding a flow of air from the smoking compartment side toward the boundary entrance through a gap between the air curtain generated due to the inclination of the air curtain and the boundary entrance.

It goes without saying that the smoke separation method of the present invention also has the same advantages as the above-described smoke separation system. Other features and advantages of the present invention will become apparent from the following description of embodiments and the accompanying drawings.

The smoke separation system and the smoke separation method of the present invention add a simple structure (shielding device or shielding process) to the boundary flow and the oblique air curtain, so that a non-smoking compartment (non-smoking room) and a smoking compartment (smoking) Effective smoke distribution with the room) can be achieved.

1 is a schematic perspective view of a smoke distribution system according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of the smoke separation system of FIG. It is a reference figure for demonstrating the malfunction of a vertical air curtain. It is a figure for demonstrating the function of the air curtain of this invention, and a boundary passage flow. It is a figure for demonstrating the effect | action of the shielding board of this invention. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of 1st Embodiment. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of the comparative example C1. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of the comparative example C2. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of Example E1. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of Example E2. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of Example E3. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of Example E4. 6 is a graph showing that the velocity Vac of the air flow forming the air curtain needs to be increased as the inclination angle α of the air curtain increases with respect to the smoke separation system (smoke separation method) of Examples E1 to E4. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of the comparative example C3. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of the comparative example C4. It is a graph which shows the experimental result using the smoke separation system (smoke separation method) of the comparative example C5. It is a schematic perspective view of the smoke distribution system which concerns on 2nd Embodiment of this invention. It is a schematic perspective view of the smoke distribution system which concerns on 3rd Embodiment of this invention. It is a schematic perspective view of the smoke distribution system which concerns on 4th Embodiment of this invention. It is a schematic longitudinal cross-sectional view of the smoke distribution system which concerns on 5th Embodiment of this invention.

1 and 2, the smoke distribution system according to the first embodiment of the present invention is applied to, for example, one indoor space 10, and this indoor space 10 has a rectangular parallelepiped shape. In the indoor space 10,

partition walls

12, 14 are arranged in the center when viewed in the longitudinal direction of the indoor space 10. These

partition walls

12, 14 divide the indoor space 10 into a non-smoking room (non-smoking compartment) 16 and a smoking room (smoking room). It is divided into (compartment rooms) 18, and a smoke separation boundary is defined. This smoke separation boundary has a rectangular boundary entrance 20 secured between the

partition walls

12 and 14, and this boundary entrance 20 directly communicates the non-smoking room 16 and the smoking room 18 with each other.

The non-smoking room 16 is connected to the outside of the indoor space 10 through a door (not shown), and the user of the smoke separation system can enter the non-smoking room 16 from outside the indoor space 10 by opening the door. Furthermore, a smoker among users who have entered the non-smoking room 16 can enter the smoking room 18 from the non-smoking room 16 through the boundary entrance 20.

Although the upper part of the boundary entrance / exit 20 is blocked by the drooping wall 22, it goes without saying that the height from the floor surface to the lower edge of the dripping wall 22 is sufficiently higher than the general height of the user.
The hanging wall 22 has a wall surface 22a facing the smoking room 18, and an air blowing device 24 is attached to the wall surface 22a.

The air blowing device 24 has a lower surface 24 a, and the lower surface 24 a is positioned above the lower edge of the hanging wall 22. A blowout port 26 and a suction port 28 are formed in the lower surface 24a. The blowout port 26 has a slit shape and extends across the entire width of the boundary entrance 20 adjacent to the boundary entrance 20, that is, the wall surface 22 a of the drooping wall 22. Therefore, when air is blown out from the blowout port 26, the blowout of air forms an air curtain, and this air curtain reaches the floor surface of the smoking room 18. The width of the outlet 26 is selected from the range of 1.5 to 40 cm, preferably 2.5 to 5 cm.

In the case of the present embodiment, the air curtain is not vertical but is inclined with respect to the opening surface of the boundary entrance 20 with a predetermined inclination angle α. In order to generate such an air curtain, at least one rectifying plate 30 is attached to the lower surface 24 a of the air blowing device 24. For example, in the embodiment shown in FIG. 2, a pair of rectifying plates 30 are provided, and these rectifying plates 30 extend parallel to each other along both side edges of the outlet 26. Such a rectifying plate 30 directs the air blown from the blowout port 26 to the inside of the smoking room 18 and obliquely downward, whereby the above-described air curtain AC is formed. For example, the flow velocity of air forming the air curtain AC is preferably 2 to 4 m / s, and the inclination angle α of the air curtain AC is preferably 30 to 45 °.
The rectifying plate 30 does not necessarily extend over the entire length of the outlet 26, and the outlet 26 does not need to extend over the entire width of the boundary entrance 20. For example, the outlet 26 may be divided into a plurality of outlet sections. In this case, these outlet sections are arranged adjacent to each other in the width direction of the boundary entrance 20.

On the other hand, the suction port 28 is positioned at the end of the air blowing device 24 and sucks air in the smoking room 18. The air sucked in this way is guided to the blowout port 26 through the air blower 24 and blown out from the blowout port 26 so as to form the air curtain AC described above. Therefore, in the present embodiment, the air curtain AC is formed using the air in the smoking room 18, and therefore the air blowing device 24 needs to be supplied with air from the outside for forming the air curtain AC. And does not adversely affect the formation of the boundary flow BPF. This point will be described later.

In the above-described embodiment, the air curtain AC is formed by the air blown from the position above the boundary entrance 20. However, if the rectifying plate 30 described above does not obstruct the user's passage, the air blowing device 24 is connected to the boundary entrance 20. The air curtain AC may be formed by blowing air from the upper part of the air.

Furthermore, the smoke distribution system of the present invention includes an air supply / exhaust device 32, and the air supply / exhaust device 32 includes a plurality of air supply ports 34 and exhaust ports 36. The air supply port 34 is disposed on the ceiling of the non-smoking room 16. More specifically, the non-smoking room 16 has a wall 16a facing the boundary doorway 20, and the air supply ports 34 are arranged in the vicinity of the wall 16a and spaced apart from each other along the wall 16a. On the other hand, the exhaust port 36 is similarly arranged on the ceiling of the smoking room 18. That is, the smoking room 18 also has a wall 18a facing the boundary doorway 20, and the exhaust ports 36 are arranged in the vicinity of the wall 18a and spaced apart from each other along the wall 18a.

For example, the air supply port 34 is connected to an air conditioner (not shown), and the air conditioner supplies conditioned air into the non-smoking room 16, while the exhaust port 36 discharges air in the smoking room 18. The air discharged from the smoking room 18 is discharged to the outside air through, for example, an air purifier (not shown).
If the boundary entrance / exit 20 is opened, the air supply into the non-smoking room 16 and the exhaust from the smoking room 18 described above are the flow of air flowing from the non-smoking room 16 into the smoking room 18 at the boundary entrance / exit 20, so-called , Forming a boundary passing flow BPF. The average velocity of the boundary passing flow BPF is sufficiently slower than the flow velocity (2 to 4 m / s) of the air forming the air curtain AC.

The average speed of the boundary passing flow BPF can be determined by the amount of air supplied into the non-smoking room 16 and the amount of exhaust from the smoking room 18. However, the air inlet 28 of the air blowing device 24 described above is disposed, for example, on the ceiling of the non-smoking room 16, and the air curtain AC is formed using the air in the non-smoking room 16, or the air inlet 28 is provided in the non-smoking room. 16 and the smoking room 28 are arranged outside, and if the air curtain AC is formed using outside air, the average speed of the boundary flow BPF is the amount of air supplied into the non-smoking room 16 and the smoking room. It cannot be uniquely determined by the displacement from 18 and adversely affects the formation of the boundary flow BPF.
In this regard, as described above, if the air in the smoking room 18 is used to form the air curtain AC, both the air curtain AC and the boundary passing flow BPF can be effectively formed.

Furthermore, the smoke distribution system of the present invention includes a shielding device 38. In the present embodiment, the shielding device 38 includes a pair of shielding plates 40. These shielding plates 40 have a rectangular shape, and form an extended gate protruding into the smoking room 18 from the boundary entrance 20. That is, the pair of shielding plates 40 are respectively arranged along both side edges of the boundary entrance 20 and are directed to the inside of the smoking room 18 from the

partition walls

12 and 14 in a direction intersecting the

partition walls

12 and 14, for example, in the vertical direction. Protruding. Therefore, the interval between the pair of shielding plates 40 is equal to the width of the boundary entrance 20.

Further, the pair of shielding plates 40 has a lower edge that sandwiches the air blowing device 24 from both sides at the upper portion thereof and contacts the floor surface of the smoking room 18. Here, it is desirable that the protruding width of the shielding plate 40 from the

partition walls

12 and 14 is secured to be equal to or greater than the distance between the lower edge of the air curtain AC and the boundary entrance 20.
Here, since the outlet 26 of the air outlet 24 extends over the entire width of the boundary inlet / outlet 20 as described above, the air curtain AC formed from the outlet 26 has a side shielding plate on the corresponding side. It should be noted that the air curtain AC has a width corresponding to the distance between the pair of shielding plates 40 (see FIG. 5).

Next, a smoke separation method performed by the above-described smoke separation system will be described.
FIG. 3 shows a reference example in which the air curtain AC is formed vertically at the boundary entrance 20. In this case, the thickness of the air curtain AC increases as it approaches the floor of the smoking room 18. Therefore, after the air flow forming the air curtain AC reaches the floor surface, the air flow passes through the base flow B1 toward the inside of the smoking room 18 along the floor surface and the boundary entrance 20 along the floor surface. The base flow B2 that passes through and flows into the non-smoking room 16 is branched.

As described above, since the air curtain AC is formed by the air in the smoking room 18, the air here includes cigarette smoke. Therefore, since the cigarette smoke component is also included in the base flow B2, the inflow of the base flow B2 into the non-smoking room 16 must be avoided.

In this respect, since the air curtain AC of the present embodiment is greatly inclined as described above, the base flow B2 is formed even if the thickness of the air curtain AC increases as it approaches the floor surface of the smoking room 18. Difficult, the air curtain AC mainly forms the base flow B1. Further, since the boundary passage flow BPF is formed at the boundary entrance / exit 20, such boundary passage flow BPF helps to form the base flow B1 and effectively prevents the formation of the base flow B2. For this reason, the air curtain AC of the present embodiment forms only the base flow B1 as shown in FIG.

On the other hand, if the air curtain AC is inclined, a triangular gap G is formed between both side edges of the air curtain AC and both side edges of the boundary entrance 20 as is apparent from FIG. As shown in FIG. 5, such a gap G allows an air flow X toward the boundary entrance / exit 20 through the gap G in the smoking room 18, and the flow X includes tobacco smoke. As a result, if the air flow X flows into the non-smoking room 16 through the boundary entrance 20, tobacco smoke leaks into the non-smoking room 16.

However, since the pair of shielding plates 40 are respectively disposed on both side edges of the boundary entrance / exit 20, these shielding plates 40 prevent the air flow X described above from moving toward the boundary entrance / exit 20.
Therefore, the air in the smoking room 18, that is, cigarette smoke, does not leak from the smoking room 18 to the non-smoking room 16, and effective smoking between the non-smoking room 16 and the smoking room 18 is achieved.

The first embodiment described above has a structure in which the pair of shielding plates 40 sandwich the air curtain AC from both sides over the entire length of the air curtain AC, but is not limited to this structure. That is, the protruding width of the pair of shielding plates 40 is shorter than the distance between the lower edge of the air curtain AC and the boundary entrance 20, and the above-described gaps between the both side edges of the air curtain AC and the corresponding shielding plates 40 are as described above. Even if a second gap (not shown) similar to the gap G exists, if the boundary passing flow BPF always flows into the inside of the smoking room 18 through the second gap, the air flow X described above becomes the second. It does not go to the boundary entrance 20 through the gap.

Next, in order to verify the advantages of the above-described smoke separation system and smoke separation method, an experiment was performed using the smoke separation system of the first embodiment shown in FIGS. 1 and 2 under the following conditions.
Experimental conditions (a) Size of non-smoking room 16 and smoking room 18: width 6m, depth 6m, height 2.7m
(b) Size of the boundary entrance 20: width 0.9m, height 2.1m
(c) Size of air supply port 34: 0.21 m × 0.21 m
(d) Number of air supply ports 34: 2 (e) Air supply capacity: 340 m ³ / h
(f) Size of exhaust port 36: 0.23 m × 0.23 m
(g) Number of exhaust ports 36: 2 (h) Exhaust capacity: 340 m ³ / h
(i) Air flow velocity forming the air curtain AC: 2.3 m / s
(j) Air curtain AC inclination angle α: 30 °
(k) Average velocity of boundary passing flow BPF: 0.05m / s
(l) Projection width of shielding plate 40: 50 cm

Experimental procedure (i) Assuming that 16 smokers are present in the

smoking room

18, 16 heating elements (100 W) are installed in the smoking room 18, and these heating elements are operated to start the experiment.
(ii) A dust concentration meter installed in the non-smoking room 16 measures the dust concentration in the non-smoking room 16 for 40 minutes from the start of the experiment.
(iii) Ten minutes after the start of the experiment, four cigarettes are simultaneously ignited in the smoking room 18 to burn the cigarettes.

The measurement result in (ii) is shown in FIG. As is apparent from FIG. 6, even when cigarette combustion is started in the smoking room 18, the dust concentration in the non-smoking room 18 hardly changes from the start of the experiment. This means that the air curtain AC and the pair of shielding plates 40 cooperate with each other between the non-smoking room 16 and the smoking room 18 even if the average velocity of the boundary flow BPF is as low as 0.05 m / s. Means to achieve effective smoke separation. Note that the average velocity (0.05 m / s) of the boundary passing flow BPF in this embodiment is sufficiently lower than the air flow velocity (0.2 m / s; see [0009]) disclosed in Patent Document 1. Should be noted.

Therefore, according to the smoke separation system and the smoke separation method of the first embodiment, even if a situation occurs in which the average velocity of the boundary flow BPF is lower than 0.2 m / s, the average velocity of the boundary flow BPF. If it is 0.05 m / s or more, smoke separation between the non-smoking room 16 and the smoking room 18 becomes possible. Note that the above-described situation occurs, for example, when the user enters the non-smoking room 16 from outside air flowing into the non-smoking room 16 and the air flow in the non-smoking room 16 is disturbed. easy.

On the other hand, FIGS. 7 and 8 show the results of experiments in Comparative Examples C1 and C2, respectively.
The comparative example C1 is different from the smoke separation system and the smoke separation method of the first embodiment only in that the air curtain AC and the shielding plate 40 are both omitted from the experimental conditions described above.
Comparative Example C2 differs from the smoke distribution system and smoke distribution method of the second embodiment only in that the shielding plate 40 is omitted from the experimental conditions described above.

As is clear from FIG. 7, in the case of Comparative Example C1, the dust concentration in the non-smoking room 16 increases rapidly immediately after the start of cigarette combustion. On the other hand, as is clear from FIG. 8, in the case of the comparative example C2, the rising speed of the dust concentration in the non-smoking room 16 is slower than that of the comparative example C1. This means that the air curtain AC exhibits a certain degree of smoke separation effect, but the air curtain AC alone cannot achieve sufficient smoke separation.

In this regard, as shown in FIG. 6, in the smoke separation system and smoke separation method in the first embodiment, the dust concentration in the non-smoking room 16 does not substantially increase, so the air curtain AC and the pair of shielding plates The combination of 40 has a simple structure and effectively achieves smoke separation between the non-smoking room 16 and the smoking room 18.

Next, only the velocity Vac of the air flow forming the air curtain AC and the inclination angle α of the air curtain AC are varied as shown in Table 1 below, and the results obtained by the same experiment as the above-described experiment are shown in FIG. 9 to 12 respectively show.

In addition, since Example E3 is the same as the smoke separation system of the first embodiment that has been tested, the experimental result of FIG. 11 matches the experimental result of FIG. 9 to 12, BG represents the background dust concentration in the non-smoking room 16 before the start of the experiment.

As is clear from the comparison of the experimental results of FIGS. 9 to 12, the experimental results of Examples E2 and E4 show that the dust concentration in the non-smoking room 16 tends to increase with time, while the experimental example E1 and E3 experimental results show no upward trend of dust concentration. This clearly indicates that it is necessary to increase the velocity Vac of the air flow that forms the air curtain AC in accordance with the increase in the inclination angle α, as is apparent from FIG.

Next, in the comparative example in which the smoke separation is achieved only by the inclined air curtain AC and the boundary passage flow BPF (negative pressure smoking room) as in the above-described smoke separation system of Patent Document 1, the velocity Vac and the boundary passage flow described above are achieved. FIG. 14 to FIG. 16 show the experimental results when the average speed Vbpf of BPF is varied as shown in Table 2 below. In the case of the following comparative example, the inclination angle α of the air curtain AC is 30 °.

As is apparent from the comparison of the experimental results of FIGS. 14 to 16, comparative examples C3 and C4 having a fast Vbpf exhibit a certain smoking effect, but comparative example C5 having a slow Vbpf has a sharp increase in dust concentration. Bring. This indicates that in the case of the smoke separation system and the smoke separation method of the present invention, even if Vbpf is slow, the air curtain AC and the pair of shielding plates 40 cooperate to mutually exert a sufficient smoke separation effect.

The smoke distribution system of the present invention is not limited to the first embodiment described above, and various modifications can be made. The smoke distribution system of another embodiment will be described below. In describing other smoke distribution systems, members and elements that exhibit the same functions as members or elements of the smoke distribution system in the first embodiment or other embodiments already described are denoted by the same reference numerals. These descriptions are omitted.

FIG. 17 shows a smoke distribution system according to the second embodiment.
According to the smoke distribution system of the second embodiment, the boundary entrance 20 is formed between the inner wall 19 and the partition wall 12 shared by the non-smoking room 16 and the smoking room 18. In other words, the boundary entrance 20 is arranged at the corner of the smoke separation boundary. In this case, since the above-described inner wall 19 also serves as one of the pair of shielding plates 40 described above, only one shielding plate 40 is required for the shielding device 38 as is apparent from FIG.

FIG. 18 shows a smoke distribution system according to the third embodiment.
The smoke distribution system of the third embodiment includes a connection area connecting the non-smoking room 16 and the smoking room 18 between the non-smoking room 16 and the smoking room 18, that is, an L-shaped connection passage 42. In the case of the third embodiment, the connection passage 42 is partitioned by the two partition plates 44 and 46 in the smoking room 18. The partition plate 44 extends in parallel with the partition wall 12, while the partition plate 46 extends from one side edge of the partition plate 44 in a direction orthogonal to the partition plate 44 and is connected to the opening edge of the partition wall 14. In the case of the second embodiment, the boundary entrance 20 in the first embodiment forms a communication port 48 that connects the connection passage 42 and the non-smoking room 16 to each other.

On the other hand, a predetermined interval is secured between the other side edge of the partition plate and the inner wall of the smoking room 18 adjacent to the partition wall 12, and this interval is a communication port 50 that connects the connection passage 42 and the smoking room 18 to each other. Form.
In the third embodiment, the air blowing device 24 is disposed in the middle of the connection passage 42 via the hanging wall 22, and a smoke separation boundary, that is, a boundary doorway 20 is defined below the air blowing device 24. Therefore, a part of the connection passage 42 between the boundary entrance 20 and the communication port 48 forms a non-smoking compartment with the non-smoking room 16, and the remaining part of the connection passage 42 forms a smoking compartment with the smoking room 18. That is, the non-smoking compartment and the smoking compartment share the connection passage 42.

The air blowing device 24 blows air obliquely downward from the blowing port 26 toward the communication port 50 to form an air curtain AC having an inclination angle α. In this case, the air curtain AC is formed over the entire width of the connection passage 42 and is sandwiched from both sides by the partition wall 12 and the partition plate 44. Therefore, the partition wall 12 and the partition plate 44 also serve as the pair of shielding plates 40 of the first embodiment described above.

FIG. 19 shows a smoke distribution system according to the fourth embodiment.
The smoke distribution system of the fourth embodiment includes an elongated intermediate chamber 52 as a connection area between the non-smoking room 16 and the smoking room 18. The intermediate chamber 52 is formed by two

partition walls

54 and 56 disposed in the indoor space 10, and the partition wall 54 partitions the non-smoking room 16 and the intermediate chamber 52, and the partition wall 56 is the smoking room 18 and the intermediate chamber. 52. The

partition walls

54 and 56 have

communication ports

48 and 50, respectively, and these

communication ports

48 and 50 are positioned on a diagonal line of the intermediate chamber 52.

In the fourth embodiment, the air blowing device 24 is disposed between the

communication ports

48 and 50 via the hanging wall 22, and a smoke separation boundary, that is, the boundary doorway 20 is defined below the air blowing device 24. Therefore, a part of the intermediate chamber 52 between the boundary entrance 20 and the communication port 48 forms a non-smoking compartment with the non-smoking room 16, and the rest of the intermediate chamber 52 forms a smoking compartment with the smoking room 18. That is, the non-smoking compartment and the smoking compartment share the intermediate room 52.

The air curtain AC formed by the air blowing device 24 has a width over the entire width of the intermediate chamber 52 and is inclined obliquely downward toward the communication port 50 at an inclination angle α. Therefore, in the third embodiment, the air curtain AC is sandwiched from both sides by the

partition walls

54 and 56, and the

partition walls

54 and 56 also serve as the pair of shielding plates 40 of the first embodiment.

FIG. 20 shows a smoke distribution system according to the fifth embodiment.
In the case of the smoke distribution system of the fifth embodiment, the air outlet 26 of the air outlet device 24 opens in the ceiling of the smoking room 18 in the vicinity of the boundary outlet 20 and rectifies conditioned air supplied from an air conditioner (not shown). The air curtain AC is formed by blowing into the smoking room 18 through the plate 30.
Here, when each of the air supply / discharge device 32 (air supply port 34) and the air blowing device 24 includes an air conditioner individually, a part of the exhaust from the exhaust port 36 may be used as the air blowing device 24. It is preferably blown out from the blowout port 26 and used for forming the air curtain AC. Thus, if the air in the smoking room 18 is used to form the air curtain AC, as described above, both the air curtain AC and the boundary passing flow BPF can be effectively formed.
Needless to say, the air supply / discharge device 32 and the air blowing device 24 may include a common air conditioner.

The smoke distribution systems of the second to fifth embodiments described above include the combination of the inclined air curtain AC, the boundary passing flow BPF, and the shielding device 38 as in the case of the smoke distribution system of the first embodiment. Smoke effect similar to that of the smoke distribution system. Needless to say, the smoke separation method using the smoke separation system of the second to fifth embodiments exhibits the same smoke separation effect as the smoke separation method using the smoke separation system of the first embodiment.

The smoke distribution system of the present invention can be incorporated into an existing floor plan having two rooms each assignable as two non-smoking rooms and a smoking room, but includes a newly constructed smoking room and a smoking room. Also good. Moreover, the boundary entrance 20 and the

communication ports

48 and 50 of the above-described embodiment may be provided with doors.

12 Partition wall (shielding device)
14 Partition Wall 16 Smoking Room 18 Smoking Room 19 Inner Wall 20 Boundary Entrance 22 Entrance Wall 24 Air Blowing Device 26 Blowing Port 28 Suction Port 32 Air Supply / Exhaust Device 38 Shielding Device 40 Shielding Plate 42 Connection Path (Connection Area)
44 Partition plate (shielding device)
46

Partition plate

48, 50 Communication port 52 Intermediate room (connection area)
AC air curtain
BPF Boundary flow G Gap α Inclination angle

Claims

A smoke distribution system having a boundary entrance at a smoke separation boundary that separates a non-smoking compartment and a smoking compartment,
An exhaust port for exhausting air in the smoking compartment and an air supply port for supplying air to the non-smoking compartment, and a flow through the boundary from the non-smoking compartment to the smoking compartment at the boundary entrance / exit An air supply / discharge device to be generated as
An air blowing device that blows air obliquely downward from an upper position or an upper position of the boundary doorway, and forms an air curtain for the boundary doorway in the smoking compartment;
A smoke distribution system comprising: a shielding device that shields an air flow from the smoking compartment side toward the boundary entrance through a gap between the air curtain and the boundary entrance that is generated due to an inclination of the air curtain.
The said shielding apparatus contains the shielding wall which protrudes the side of the said air curtain of the side corresponding to this side edge toward the said smoking compartment side from the at least 1 side edge of the said boundary entrance / exit. Smoke system.
The air blowing device includes a blowout port that extends along the upper edge of the boundary doorway and blows out air, and a suction port that sucks air from the smoking compartment side and returns the sucked air toward the blowout port. The smoke distribution system according to claim 2.
The boundary entrance is formed in a partition wall that directly separates the smoking compartment and the non-smoking compartment and defines the smoke separation boundary,
The smoke separation system according to claim 2, wherein the shielding wall is a shielding plate that intersects the partition wall.
The non-smoking compartment and the smoking compartment include a non-smoking room and a smoking room, respectively, while connecting the non-smoking room and the smoking room to each other and sharing the connection area with the boundary doorway,
The smoke distribution system according to claim 2, wherein a partition wall forming the connection area also serves as the shielding plate.
The connection area is formed as a connection passage connecting the non-smoking room and the smoking room,
The smoke separation system according to claim 5, wherein the boundary entrance is arranged in the middle of the connection passage.
The smoke distribution system according to claim 6, wherein the connection passage has an L shape.
The connection area is formed as an intermediate room sandwiched between the non-smoking room and the smoking room, and the intermediate room is connected to each of the non-smoking room and the smoking room and is positioned on a diagonal line of the intermediate room. Have two communication ports,
The smoke distribution system according to claim 5, wherein the boundary entrance is disposed between the communication openings.
The smoke distribution system according to claim 2, wherein the air curtain has an inclination angle of 30 to 45 ° with respect to an opening surface of the boundary entrance.
The smoke distribution system according to claim 2, wherein a flow velocity of air forming the air curtain is faster than a velocity of the boundary passing flow.
The smoke distribution system according to claim 10, wherein a flow rate of air forming the air curtain is 2 to 4 m / s.
A smoke separation method comprising a boundary entrance and exit at a smoke separation boundary that separates a non-smoking compartment and a smoking compartment, and achieving smoke separation at the border entrance and exit,
While air is exhausted from the smoking compartment through an exhaust port, air is supplied to the non-smoking compartment through an air supply port, whereby an air boundary from the non-smoking compartment to the smoking compartment at the boundary entrance Generating a flow through,
Blowing the air obliquely downward from the upper or upper position of the boundary doorway, and forming an air curtain for the boundary doorway in the smoking compartment; and
And a shielding step of shielding a flow of air from the smoking compartment toward the boundary entrance through a gap between the air curtain and the boundary entrance generated due to the inclination of the air curtain.