JPH02309146A - Ventilation system - Google Patents

Abstract

PURPOSE:To perform an efficient discharging of cigarette smoke out of a room by a method wherein air is discharged from an upper surface of a partition plate placed on a desk so as to form an upward directed air flow and an opening of a ventilating fan installed at a ceiling facing an interior of the room is oppositely faced against a discharging port arranged at the upper surface of the partition plate. CONSTITUTION:A partition plate 11 arranged between a pair of desks 10 is a hollow member, vertically placed on a floor and its upper end is projected more upwardly than top plates 12 of the desks 10. A fan 17 is arranged at the lower end within the partition plate 11 in correspondence with a suction port 13, air fed from the suction port 13 into the partition plate 11 is pressurized and then discharged out of a discharging port 14 upwardly. A ceiling is provided with a ventilating fan 20 having an opening 22 oppositely facing against the discharging port 14 of the partition plate 11. As one of the smoke sensors detects a cigarette smoke, the ventilating fan 20 and the 17 of the partition plate 11 are operated. With such an arrangement, it is possible to discharge the cigarette smoke out of the room during smoking.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a ventilation system that exhausts smoke outside when a person sitting at a desk smokes.

[Conventional technology]

Recently, the smoking population has been decreasing, and non-smokers are now demanding the right to quit smoking. Therefore, it is required to ventilate conference rooms and the like to prevent non-smokers from inhaling cigarette smoke. The mainstream of conventional ventilation systems is one in which a ventilation fan is installed in the ceiling or the like.

[Problem to be solved by the invention]

In the conventional configuration described above, smoke is discharged only by suction from the ventilation fan, so the flow of air slows down in areas away from the ventilation fan. Therefore, when a ventilation fan is installed on the ceiling, if a person is seated and smoking, the smoke cannot be sufficiently exhausted and even non-smokers will inhale the smoke, which cannot fully solve the problem. there were. In order to solve this problem, if the suction capacity of the ventilation fan is increased, there is a problem that a wind that can be felt by a person blows into the room, causing discomfort. The purpose of the present invention is to solve the above-mentioned problems, and the present invention efficiently exhausts cigarette smoke to the outside when smoking while sitting in front of a desk, thereby preventing non-smokers from inhaling the smoke. The aim is to provide a ventilation system that eliminates the

[Means to solve the problem]

In order to achieve the above object, the present invention provides a partition that is arranged along at least one side of the periphery of the desk and protrudes beyond the top surface of the desk top, and the partition is arranged below the top surface of the desk top to intake air. As a hollow body with an opening and an exhaust port on the top, it is equipped with a fan that draws air from the intake port and discharges it from the exhaust port, and a ventilation fan that discharges the air introduced from the opening on the indoor side to the outside. The opening on the indoor side of the ventilation fan is arranged to face the exhaust port. Further, a smoking sensor for detecting smoking is provided near the exhaust port of the partition and/or near the opening on the indoor side of the ventilation fan, and a temperature sensor is provided near the opening on the indoor side of the ventilation fan. When smoking is detected by the smoking sensor, the fan is operated and the indoor air is exhausted to the outside by the ventilation fan, and when smoking is not detected,
When the temperature detected by the temperature sensor is lower than a predetermined temperature, the fan and the ventilation fan are stopped, and when the temperature detected by the temperature sensor is higher than the predetermined temperature, the fan is stopped and the ventilation fan is reversed to prevent the downward airflow. It is a good idea to allow it to occur.

[Effect]

According to the above configuration, air is discharged from the top surface of the partition provided on the desk to form an upward airflow, so when a person sitting in front of the desk is smoking, the cigarette smoke is It will rise along with the air currents. In addition, since the opening on the indoor side of the ventilation fan installed in the ceiling faces the outlet installed on the top of the partition, cigarette smoke that rises on the airflow generated from the top of the partition is efficiently introduced into the ventilation fan. It can then be discharged outdoors. That is,
You can smoke without letting others inhale. Also, if the partition is placed between a pair of desks, the rising airflow will create a partition between the people who are seated in front of each other. While preventing the smoke from reaching the other person,
We can talk face to face. Furthermore, if a smoking sensor and a temperature sensor are installed and the fans and ventilation fans in the partition are controlled as described above, cigarette smoke can be exhausted outside when smoking, and when non-smoking, the air in the upper part of the room can be controlled. When the temperature reaches a high temperature, the indoor air can be stirred to even out the room temperature.

[Embodiment 1] As shown in FIGS. 1 and 2, a partition 11 is provided between a pair of desks 10. The partition 11 is a hollow body, stands upright on the floor, and has an upper end. It protrudes above the top plate 12 of the desk 10. As shown in Figure 3, the partition 11
At the bottom end of the desk 10 there is an air inlet 1 on the side that
3 is open, and an exhaust port 14 is open on the top surface. Further, suction ports 15 are opened on the side surface of the desk 10 on the side of the top plate 12 slightly above the top plate 12 so as to correspond to both skins 10. An introduction plate 16 whose lower end is fixed to the periphery of the suction port 15 and whose upper part is inclined inward of the partition 11 is disposed inside the suction port 15. 16, so that air can circulate between the upper edge and the upper edge of the Further, a fan 17 is disposed at the lower end of the partition 11 in correspondence with the intake port 13, so that the air intake 013 is connected to the partition 11.
The air introduced into the chamber is pressurized and discharged upward from the exhaust port 14. Therefore, an air flow from the intake port 13 toward the exhaust port 14 is formed inside the partition 11, so that the negative pressure generated inside the suction port 15 causes air to be introduced into the partition 11 from the suction port 15. A smoking sensor 18 is disposed near the exhaust port 14. The smoking sensor 18 detects smoking by detecting cigarette smoke particles. Incidentally, a ventilation fan 20 having an opening 22 facing the exhaust port 14 of the partition 11 is disposed on the ceiling. The ventilation fan 20 can be placed in the position shown in FIG. 2(a) or in the position shown in FIG. 2(b).
) is placed in the position shown. As shown in FIG. 4, the ventilation W120 includes a cylindrical main body 21, and openings 22 and 23 are formed in the lower and upper side surfaces of the main body 21, respectively. Further, a fan 24 is housed within the main body 21 on the flow path between the openings 22 and 23. One opening 22
opens toward the indoor side facing the lower surface of the ceiling panel 1, and the other opening 23 faces the space between the ceiling panel 1 and the ceiling slab 2. In the space between the ceiling panel 1 and the ceiling slab 2, one end is connected to an air conditioner or the other end of a return duct 3 exposed to the outdoors faces. A louver 25 is removably attached to the opening 22 on the indoor side with screws 26, and an air filter 2 is attached to the opening 23 on the exhaust side.
7 is removably attached so as to cover the opening 23. A smoking sensor 28 and a temperature sensor 29 are arranged near the opening 22 on the indoor side. The smoking sensor 28 is equivalent to the smoking sensor 18 provided in the partition 11, and detects the state of smoking using smoke particles. Further, the temperature sensor 2 detects the room temperature near the ceiling. The smoking sensors 18, 28 and the temperature sensor 29 are connected to the fan 17.24 via the control circuit 4, as shown in FIG. 5, and the control circuit 4 operates as follows. 6th
As shown in the figure, one of the smoking sensors 18, 28
When detecting cigarette smoke, the partition 11 and ventilation fan 2
0 fans 17 and 24 are operated together. At this time,
The air discharged from the exhaust port 14 of the partition 11 forms an upward air flow, and the fan 24 in the ventilation fan 20 blows air from the opening 22 toward the opening 23, distributing the indoor air between the ceiling panel 1 and the ceiling slab 2. The smoke from smoking is sent into the return duct 3 through the space between the partitions, and is ventilated by riding on the airflow rising from the partition 11! 20 and is discharged outside. On the other hand, if neither smoking sensor 18, 28 detects cigarette smoke, the fan 17 of the partition 11 stops;
The operation of the fan 24 of the ventilation fan 20 is determined by the temperature near the ceiling detected by the temperature sensor 29. That is, when the air temperature near the ceiling is lower than a predetermined temperature, the fan 24 of the ventilation fan 20 is stopped, and when the temperature is above the predetermined temperature,
The fan 24 rotates in the opposite direction and blows air from the opening 23 on the outdoor side toward the opening 22 on the indoor side. Therefore, in this state, a downward airflow is formed and the high temperature air near the ceiling is sent downward to stir the indoor air, preventing high temperature air from accumulating at the top of the room during heating etc. to increase heating efficiency. As described above, when smoking, by discharging upward airflow from the exhaust port 14 of the partition 11 to form an air curtain, cigarette smoke can be sent into the ventilation fan 20 without being diffused. Furthermore, when a cigarette is placed on the desk 1, the smoke emitted from the cigarette is introduced into the partition 11 through the suction port 15, and is discharged together with air from the exhaust port 14, eventually being sent to the ventilation fan 20. That's what happens. When not smoking, the air in the room can be stirred as necessary to even out the temperature distribution in the room, and one ventilation fan 20 can be used for two functions. FIG. 7 shows the results obtained by computer simulation of the movement of smoke by changing the discharge speed Vo of the airflow from the partition 11 and the suction speed Vi into the ventilation fan 20, and FIG. =0.5*/sec, Vi=0.
1*/sec, Figure 7(b) shows Vo=1°5 w/sec
c, V i = 0.4 x7sec, Figure 7(c) shows Vo=0, 5 x/9ec, V i = 0.4 x
/sec is shown. Further, the lines indicate the flow of smoke, and it can be seen that smoke is efficiently discharged even in the state shown in FIG. 7(c). In other words, Fig. 7(a) (
In condition b), compared to the rising speed of smoke, the ventilation fan 20
Because the smoke suction speed is too low, the smoke that is not sucked into the ventilation M20 flows along the ceiling surface and circulates in the room. However, if the settings are as shown in Figure 7 (e), the smoke It is often discharged outside and the intended purpose is achieved. In the above-mentioned embodiment, the partition 11 was installed upright on the floor, but it is not necessarily necessary to install it upright on the floor.
is located below the top plate 12 of the desk 10.
Further, although the air intake port 13 is opened toward one of the desks 10, if an air flow is formed under the desk 10 and the feet become cold, the air intake port 13 may be formed on the side of the partition 11. It's okay. Furthermore, the smoking sensors 18 and 28 may be ones that detect ultraviolet rays generated when a lighter or match is lit to detect whether the person is about to start smoking. Further, the smoking supper 18, 28 may be provided only on one of the partition 11 and the ventilation fan 20. If there is no need to stir the indoor air with the ventilation fan 20, there is no need to provide the temperature sensor 29, and there is no need to reverse the ventilation fan 20.
When smoking is detected by 8, partition 11 and ventilation 1
The control circuit 4 may be configured to operate the fans 17, 24 with the i20 and stop the fans 17, 24 when no smoking is detected. Furthermore, neither the smoking sensor 18.28 nor the temperature sensor 29 may be provided, but a manual switch may be provided to operate the fan 17.24 manually during smoking.

[Example 2] In the ventilation fan 20 of Example 1, the fan 24 was rotated in the opposite direction when stirring indoor air, and the air was sent from the opening 23 toward the opening 22. In this case,
Since air is brought in from outside through the attic, cold air may be brought in from outside and dust from the attic may blow out. Therefore, in this embodiment, the eighth
As shown in the figure, a damper 5 is provided in an opening 23 provided on the upper surface of the main body 21 of the ventilation fan 20 and facing the ceiling, and the damper 5 is closed when the fan 24 is rotated in the reverse direction. Further, the inner peripheral surface of the main body 21 and the periphery of the fan 24 are spaced apart from each other. According to this configuration, when exhausting smoke outside, the ninth
As shown in Figure (a), when the damper 5 is opened and the air taken in from the opening 22 is discharged from the opening 23 to stir the indoor air, the damper 5 is closed as shown in 9th ffi (b). By rotating the fan 24 in the opposite direction, the air introduced from around the fan 24 flows into the fan 24.
It passes through and is discharged downward. Therefore, since the air taken in from the room is returned to the room and the air is circulated indoors, the temperature distribution in the room can be made even more effective.

【Effect of the invention】

As described above, the present invention provides a partition that is arranged along at least one side of the peripheral edge of the desk and protrudes beyond the top surface of the desk top, and the partition has an air intake opening below the top surface of the desk top. As a hollow body with an exhaust port opening on the top surface, a fan is installed to discharge air introduced from the intake port and discharged from the exhaust port.
A ventilation fan is installed on the ceiling to exhaust air introduced from an opening on the indoor side to the outside, and the opening on the indoor side of the ventilation fan is placed opposite to the above exhaust port. Air is expelled to form an upward airflow, so if a person sitting at a desk is smoking, the cigarette smoke will rise along with this airflow. In addition, since the opening on the indoor side of the ventilation fan installed in the ceiling faces the outlet installed on the top of the partition, cigarette smoke that rises on the airflow generated from the top of the partition is efficiently introduced into the ventilation fan. It has the advantage that it can be discharged outdoors. In other words, you can smoke without causing others to smoke. Also, if the same partition is placed between a pair of desks, a partition will be created by the rising airflow between the people who are seated in front of each other, which will prevent them from smoking cigarettes. This allows you to talk face-to-face without letting the fumes reach the other person. In addition, a smoking sensor is provided to detect smoking near the exhaust port of the partition or near the opening on the indoor side of the ventilation fan, and a temperature sensor is provided near the opening on the indoor side of the ventilation fan. When the sensor detects smoking,
While operating the fan, indoor air is discharged outside by the ventilation fan, and when no smoking is detected, the fan and the ventilation fan are stopped when the temperature detected by the temperature sensor is lower than a predetermined temperature, and the temperature detected by the temperature sensor is stopped. By stopping the fan and reversing the ventilation fan to generate a downward airflow when the temperature exceeds a predetermined temperature, cigarette smoke can be exhausted outdoors when smoking, and indoors when non-smoking. The advantage is that when the air above the room becomes hot, the room air can be stirred to even out the room temperature.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing Embodiment 1 of the present invention, and FIG. 2 (
a) and (b) are respectively plan views showing an example of the positional relationship between the partition and the ventilation fan in the same as above; FIG. FIG. 5 is a schematic circuit diagram of the same as above, FIG. 6 is an explanatory diagram of the operation of the control circuit in same as above,
7(a) to 7(c) are explanatory views of the same operation as above, FIG. 8 is a perspective view showing a ventilation fan used in Embodiment 2 of the present invention, and FIG.
a) and (b) are explanatory views of the operation of the ventilation fan used in the same as above, respectively. 1...Ceiling panel, 2...Ceiling slab, 3...Return duct, 4...Control circuit, 10...Desk, 11
...Partition, 12...Top plate, 13...Intake port, 1
4... Exhaust port, 17... Fan, 18... Smoking sensor, 20... Ventilation fan, 28... Smoking sensor, 29
...Temperature sensor. Agent Patent Attorney Ishi 1) Chief 7 Figure 3 Figure 4 Country Figure 5 Figure 6 Figure 7 (G) (b) (C)

Claims (2)

[Claims] (1) It has a partition that is arranged along at least one side of the peripheral edge of the desk and protrudes beyond the top surface of the desk top, and the partition has an intake port opening below the top surface of the desk top and an exhaust port on the top surface. It is a hollow body with an opening, and has a built-in fan that discharges air introduced from the intake port through the exhaust port, and a ventilation fan installed in the ceiling that discharges the air introduced from the opening on the indoor side to the outside. A ventilation system characterized by being arranged to face the exhaust port. (2) A smoking sensor that detects smoking is installed near the exhaust port of the partition or near the opening on the indoor side of the ventilation fan, and a temperature sensor is installed near the opening on the indoor side of the ventilation fan. If smoking is detected by the smoking sensor, the fan is operated and indoor air is exhausted to the outside by the ventilation fan, and when smoking is not detected, the temperature detected by the temperature sensor is lower than a predetermined temperature. 2. The fan and the ventilation fan are stopped, and when the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature, the fan is stopped and the ventilation fan is reversed to generate a downward airflow. ventilation system.