JPH0590234U - Device for purifying locally polluted air - Google Patents

Abstract

(57) [Summary] [Purpose] To guide polluted air in a room such as smoking to a purification treatment source without diffusing into the room and affecting air conditioning. [Composition] An air ejector in which a fan is arranged in a casing having an air intake port and an air injection nozzle is attached to an air discharge side of the fan, and an air intake port attached to a position apart from the air ejector. The air blower and the air purifying means are provided in an air passage leading from the air suction port to the air outlet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for preventing pollutants from an air pollution source, for example, smoking when a smoker is present, in the room to maintain a good indoor environment.

[0002]

[Prior Art]

 Smoking is a major source of air pollution in living rooms, and as a countermeasure against this, (1) smoke corners have been provided, (2) smoking and non-smoking zones are divided, and air in the smoking zone is exhausted intensively. Measures have been taken such as (3) increasing ventilation and (4) installing an air cleaner indoors.

[0003]

[Problems to be solved by the device]

 When the above-mentioned smoking corner is provided, the smoker needs to move, and smoking behavior is restricted. As a result, work and interviews must be interrupted. Although there are differences to the extent that a smoking zone is provided, there are the same problems as in the case of smoking corners, and it is difficult for nonsmokers to enter the smoking zone.

On the other hand, when the ventilation amount is increased, the cost of air conditioning equipment increases. Generally, when smoking indoors, in order to maintain the air quality at the same level as when non-smoking, it is said that the amount of fresh outside air is required to be 6 times that of non-smoking. The introduction of a large amount of fresh outside air leads to an increase in the heat load on the air conditioning equipment and increases the air blowing power. Even if ventilation is used, smoking is diffused and diluted in the room, so the concentration near the source is high. Even when an air cleaner is attached, the concentration near the source is high due to diffusion and dilution.

The present invention is intended to solve such a problem.

[0006]

[Means for Solving the Problems]

 According to the present invention, an air ejector in which a fan is arranged in a casing having an air intake port and an air injection nozzle is attached to an air discharge side of the fan, and an air ejector installed at a position apart from the air ejector (EN) Provided is a device for purifying contaminated air in a room, which comprises an air inlet and an air blower and an air purifying means which are provided in an air passage leading from the air inlet to the air outlet.

[0007]

[Action]

 The air ejector sucks the air in the vicinity where it is placed by the drive of the fan from the air intake into the casing, and blows it out at high speed as a thin air jet from the small diameter air injection nozzle. The air jet flow ejected from the nozzle gradually weakens the velocity while attracting air around the trajectory. In other words, the air jet serves to convey the air in the vicinity of the air jet in the injection direction, and the number of air jets from the nozzle (therefore, the amount of air taken into the casing from the air intake). Double or more ambient air is conveyed while attracting in the jet direction.

If the jet flow direction is directed toward the air suction port by the action of transporting the ambient air by the air jet flow, the ambient air is transported to the suction port. Therefore, if this air ejector is installed near an air pollution source, for example, a smoker, and the nozzle is directed toward the air suction port, the contaminated air is transported to the suction port by the jet flow, and diffusion into the room is suppressed. It

The polluted air sucked into the air suction port is purified and blown again into the living room from the air outlet. Therefore, it is possible to purify locally contaminated air without disturbing the indoor air conditioning conditions and the balance of indoor pressure. For example, an air filter or an activated carbon filter is used as the air cleaning means provided between the air suction port and the air outlet.

[0010]

【Example】

 Fig. 1 shows the principle of the contaminated air transfer and purification mechanism by the device of the present invention. Reference numeral 1 indicates an air ejector. This is a simple structure in which a fan 3 is housed inside a tubular casing 2, a small diameter air injection nozzle 4 is provided on the discharge side of the fan 3, and an air intake port 5 is provided on the suction side of the fan 3. Is. Reference numeral 6 indicates an air volume adjusting means (damper).

When the fan 3 is driven, the air ejector 1 injects the air taken in from the air intake 5 as a thin air jet flow 7 from the nozzle 4. The air jet flow 7 slows down as it moves away from the nozzle 4, but while having a sufficient momentum, it has a function of attracting and transporting the ambient air surrounding the jet flow 7 in the jet direction.

That is, it moves in the ejection direction while entraining much more ambient air than that ejected from the nozzle 4, slows down during this movement, and enlarges the diameter of the jet flow. In FIG. 1, the influence range of the jet flow is shown by a broken line region 8. Although this area 8 does not have a clear contour, it shows a zone for attracting and transporting the ambient air, and the transport of the air in this area causes the surrounding air to reach this area as well. An airflow that tries to flow in is generated.

Therefore, when a pollution source such as smoking 9 exists near the air ejector 1, the smoking 9 flows into the region 8 and is conveyed in the jetting direction of the jet flow. Therefore, if the air suction port 10 is provided on the extension of the attracting and transporting area 8 due to the jet flow, the smoking 9 is transported toward the air suction port 10.

In the example of FIG. 1, the air suction port 10 is provided in the ceiling 11, and the air sucked in the air suction port 10 passes through the air purifying unit 12 installed in the back of the ceiling, and again the ceiling 11 It is blown into the same room through an air outlet 13 provided at another location. The air purification unit 12 has a blower 14 and an air purification means (consisting of an air filter 15 and an activated carbon filter 16) installed in the casing, and an air inlet 10 and an air outlet 13 are provided below the casing. It has a corresponding opening.

The smoking 9 transported to the vicinity of the air intake port 10 by the jet flow is sucked into the unit 12 by the operation of the blower 14 of the air purification unit 12, and purified through the air filter 15 and the activated carbon filter 16. Then, it is blown into the living room from the air outlet 13.

FIG. 2 shows an embodiment of the air ejector 1. This engine is a table-top type, and the engine 1 is installed on a base 18 via a universal joint 19 so that it can swing. The edger 1 has a rocket shape and is equipped with an air injection nozzle 4 at the tip axis. A fan 3 is installed inside the body, and an air intake port 5 is provided on the peripheral surface below the body. A gallery that rotates around the axis is provided outside the air intake port 5, and the opening amount can be adjusted by rotating this gallery around the axis. The fan 3 is a small fan that uses the DC motor 20. Of course, an AC motor can be used instead of this. At that time, the fan itself can be configured as a part of the motor by configuring the shaft core of the axial blower in the motor core.

FIG. 3 shows a state in which the air ejector 1 on the desk of the smoker is operating. The direction of the air jet 7 of the ejector 1 is aimed at the air intake port 10 on the ceiling, whereby the smoking 9 is conveyed toward the air intake port 10 by the above-mentioned action. The air suction port 10 of this example communicates with an exhaust duct 22 installed in the ceiling. As shown in FIG. 4, the exhaust duct 22 communicates with the air purification unit 12, and the air that has passed through the air purification unit 12 is blown into the room from the air outlet 13 through the air supply duct 23.

The air purification unit 12 has a blower 14, an air filter 15, and an activated carbon filter 16 mounted in a casing, as in the case of the above. The air sucked from a plurality of air suction ports 10 joins and is taken into this air purification unit 12. Therefore, one air purification unit 12 can treat locally contaminated air at a plurality of locations.

Although FIG. 3 shows a state in which one air ejector is operated by aiming at one air outlet, a plurality of air outlets are used for one air outlet. The ejectors can also be operated with their respective aiming points. In this case, multiple air pollution sources (smokers) can be treated with one air inlet.

[0020]

[Effect of the device]

 According to the device of the present invention configured as described above, the contaminated air is conveyed from the vicinity of the contaminated air toward the air suction port, so that the amount of the contaminated air diffused into the room is reduced. Therefore, for example, so-called second-hand smoke when a smoker is present is prevented. It is good news for non-smokers that even if non-smokers do not smoke, the smoker's inhalation of smoke can prevent passive smoke leading to substantial smoking.

Since the device of the present invention does not disturb the temperature and pressure balance in the room, it does not hinder the air conditioning and can be applied to the existing air-conditioned space as it is. In particular, even when there are many smokers such as in a coffee room, the smokers only have to individually operate the EJECTA, which has the excellent effect of being able to respond individually to changes and changes in personnel.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing the principle of a contaminated air carrying and purifying mechanism according to the device of the present invention.

FIG. 2 is a general view showing an example of an air ejector according to the present invention.

FIG. 3 is a device layout view showing an embodiment of the device of the present invention.

FIG. 4 is a layout plan of an in-ceiling device showing a system for purifying contaminated air according to the present invention.

[Explanation of symbols]

 1 Air Ejector 2 Cylindrical casing of Ejector 3 Fan inside Ejector 4 Air injection nozzle 5 Air intake 6 Air volume control means 7 Jet flow 8 Induction transport area of ambient air by jet flow 9 Smoking 10 Air suction port 11 Ceiling 12 Air purification unit 13 Air outlet 14 Blower 15 Air filter 16 Activated carbon filter 22 Exhaust duct 23 Air supply duct

Claims (4)

[Scope of utility model registration request] 1. An air ejector in which a fan is arranged in a casing having an air intake port and an air injection nozzle is attached to an air discharge side of the fan, and an air intake port attached to a position apart from the air ejector. And a device for purifying contaminated air in a living room, which comprises an air blower and an air purifying means interposed in an air passage leading from the air suction port to the air outlet. 2. The air suction port is provided on the ceiling, and one or more air ejectors are placed on the table or desk of the smoker with the air injection nozzle aimed at the direction of the air suction port. A device for purifying contaminated air in a living room according to. 3. The air ejector is of a table type having an air injection nozzle port facing upward, and is provided with an air volume adjusting means for adjusting an air intake amount into the air intake port.
Alternatively, the device for purifying contaminated air in a living room according to item 2. 4. The purifying device for contaminated air in a living room according to claim 1, 2 or 3, wherein the air sucked into the air suction port is blown into the living room from the air outlet through the air purifying means.