JP2001132996A - Air cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To highly efficiently capture cigarette smoke generated by smoking and to prevent pollution of indoor air. SOLUTION: This air cleaning device comprises an air intake passage 3, an air discharge passage 4, an air inlet 6 opening sideways at the upper side of the intake passage 3, and a turbo fin 5 having blades 7 annularly arranged at the periphery of the opening part of the air inlet 6 at a given angle and connected to the discharge passage 4. The lower end of the intake passage 3 is connected to the suction side of a suction device 17 and the lower end of the discharge passage 4 is connected to the discharge side of the suction device 17. Cigarette smoke is captured by a revolution flow generated by the turbo fin 5 and sucked and excluded through the air inlet 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifying apparatus, and more particularly to an air purifying apparatus that is suitable for purifying indoor air by efficiently removing tobacco smoke at a smoking place.

[0002]

2. Description of the Related Art Conventionally, in offices and lobbies,
Various devices have been provided for suctioning out tobacco smoke generated by smoking without diffusing the smoke into the room.

[0003] In this type of purifying apparatus generally used in the past, for example, a suction fan is installed in a table in a smoking area, and smoke coming out of tobacco is sucked from a suction port provided in the table by the suction force of the suction fan. The air is purified by a filter installed in the table and exhausted indoors.

[0004]

However, since smoke discharged from a person who smokes during smoking is located above the upper surface of the table, the smoke cannot be completely sucked by the suction fan in the table, and the air is exhausted from the ceiling or the like. The function of purifying smoke-containing air was not sufficient, for example, the room was filled with tobacco smoke until exhausted outside depending on the duct.

[0005] For this reason, a screen-like partition is established around the table so as to suppress the diffusion of smoke at all.
There is a problem that erecting the partition plate impairs the surrounding scenery.

[0006] In particular, a wall-mounted suction device is provided, in which several independent exhaust ports are arranged tangentially at several locations around the intake port, and a swirling flow is generated by air discharged from each of the exhaust ports. Japanese Patent Laid-Open Publication No. Hei 10-31572 proposes an apparatus that raises the smoke capture rate by raising it.

However, according to the above-mentioned publication, even if a certain amount of swirling flow occurs in the exhaust flow, the swirling flow only exists around the position immediately before the suction port, and the swirling flow reaches the smoking area. It cannot be expected that the smoke will be actively captured, and the smoke will not be exhausted effectively.

According to the present invention, although it is an open type, tobacco smoke generated by smoking in a smoking zone can be sucked and exhausted by being put in a swirling airflow, thereby increasing the smoke capture rate and contaminating indoor air. It is an object of the present invention to provide an air purifying device for preventing the occurrence of air pollution.

[0009]

As a means for solving the above problems, the present invention comprises an air intake passage and an air discharge passage,
An inlet opening laterally on the upper side of the inlet passage;
Turbo fins are provided around the opening of the suction port at a required angle in a ring shape and connected to the discharge passage. A lower end of the suction passage is connected to a suction side of a suction device. The lower end is connected to the exhaust side of the suction device, so that the swirling flow generated by the turbo fins captures cigarette smoke and the like and removes it by suction from the suction port.

[0010] An outer air guide and an inner air guide are provided concentrically at the front of the turbo fin, and the inner surface of the outer air guide and the outer surface of the inner air guide are provided at the front of the turbo fin. If the formed annular passage is formed, the swirling flow of the clean air discharged from the turbo fin can be extended over a longer distance, and the efficiency of capturing tobacco smoke can be increased.

If a perforated plate such as a punched medal is provided at the front end of the inner peripheral air guide, the intake air can be rectified and smoothly flow into the intake port.

If a pair of the cigarette smoke purifying devices are installed facing each other at a predetermined interval, and a smoking zone is provided between the devices, the smoke exhausting effect can be further enhanced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

An air purifying apparatus 1 according to the present invention includes a vertically long rectangular parallelepiped device main body 2, in which an air intake passage 3 and an air discharge passage 4 are shown as schematically shown in cross section in FIG. An annular turbofin 5 and a suction port 6 having a smaller diameter than the turbofin 5 are provided in an upper portion of the apparatus main body 2.

As shown in FIG. 1, FIG. 2, FIG. 7, and FIG. 8, the turbo fin 5 is provided with a required angle θ (15 ° to 45 °, preferably 30 °) in an annular space communicating with the discharge passage 4. °), a plurality of blades 7, 7,... Inclined at a fixed angle in the circumferential direction.
Is blown out in the direction of the arrow to form a swirling flow.

A cylindrical hood 8 is fixedly provided on the front side of the suction port 6, and the tip of the hood 8 projects slightly forward from the position where the turbo fins 5 are installed.

An outer air guide 9 and an inner air guide 10 are disposed at the front of the turbo fin 5 so as to reach the front surface of the apparatus main body 2. The air guide 9 communicates with the turbo fin 5 between the air guides 9 and 10. An annular passage 11 is formed, and the front end of the annular passage 11 is open to the front of the apparatus main body 2.

A perforated plate 12 made of punched metal or the like is attached to the front end of the inner air guide 10 so that the air flow sucked into the suction port 6 is rectified so as to be smoothly sucked.

The discharge passage 4 has partitions 13 and 14 on both left and right sides as viewed from the front, and the partition 13 upstream of the turbo fin 5 in the blowing direction is connected to the outer periphery of the turbo fin 5 and is connected to the other side. The upper portion 14a of the partition wall 14 is bent in a tangential direction on the side of the hood 8 of the suction port 6 which is on the upstream side in the blowing direction, and is gradually separated from the hood 8 from a substantially symmetrical position c on the diameter line of the joining point b. And the spiral partition wall 15 is brought into contact with the inner peripheral position d of the turbo fin 5.
A partition 16 is provided on the outer peripheral side of the turbo fin 5 corresponding to the end position d of the partition 15, and the air flow e rising in the discharge passage 4 is constricted in the region of the partition 14a. , Toward the area of the turbo fins 5 and confined by the partition walls 15, while flowing toward the area of the turbo fins 5, while being confined by the partition walls 15 and flowing along the blades 7, 7,. It is supposed to be blown out. When the generation of excess air is taken into consideration, an exhaust hole 2a can be provided on the side surface of the apparatus main body 2 above the upper end of the partition wall 15.

In addition to the blade 7 shown in FIG. 8B, the blade 7 may bend the air outlet end 7a as shown in FIG. 8C so that a further swirling flow is given to the exhaust flow. ,
In addition, a shape in which the blade 7 is curved in an arc shape or the like can be selected. The blade 7 is formed by drilling square holes 5a, 5a... At a constant pitch in the circumferential direction of the ring-shaped metal plate and welding the base of the blade 7 to one side of the square hole. It may be formed by cutting and raising a ring-shaped metal plate.

A suction device 17 is provided at a lower position inside the apparatus main body 2. The suction device 17 includes a fan 18 (sirocco fan), an activated carbon filter 1
9, a dust collecting cell 20, and a pre-filter 21. The fan 18 is driven by a motor 22. The outlet of the fan 18 is in the discharge passage 4, and the side of the pre-filter 21 is the suction. Each is communicated with the passage 3.

In the figure, reference numeral 23 denotes a human body detection sensor provided on the front surface of the apparatus main body 2, which detects when a person approaches the vicinity of the apparatus main body 2 and drives the suction device 17; When the table is installed in front of the apparatus main body 2, the groove is formed to match the height of the table so that the end of the top plate is charcoaled and integrated. Reference numeral 25 denotes a discharge hole opened on the surface of the apparatus main body 2 for discharging surplus clean air into the room.

Next, the operation of the above embodiment will be described.

The air purifying apparatus 1 according to the present invention is used in such a manner that the rear surface of the apparatus main body 2 is set so as to face a corner of an office or a wall surface of a lobby or the like. Further, a table is placed in front of the apparatus main body 2 as necessary. At this time, the table can be stably placed by fitting one end of the table top into the groove 24 on the front surface of the apparatus main body 2.

When a person stands in front of the air purification device 1 installed in this way, the human body sensor 23 detects this and the suction device 17 is activated.

When the motor 22 of the suction device 17 is driven,
The fan 18 rotates to blow air to the discharge passage 4 and suck air through the suction passage 3. The sucked air (room air) is purified while passing through the pre-filter 21, the dust collection cell 20, and the activated carbon filter 19,
The air blown out from the fan 18 is clean air without contamination.

The air blown out to the discharge passage 4 rises as shown by an arrow e in FIG. 2 and gradually narrows and flows in between the partition 13 and the outer periphery of the hood 8 and the partition 15, and flows in the meantime. The fin 5 is blown tangentially to the turbo fin 5 along the inclination of each blade 7, 7,. 4), and flows out from the front surface of the apparatus main body 2 toward the front.

On the other hand, since the central portion of the swirling flow f is sucked into the suction port 6, it becomes a suction flow indicated by an arrow g in FIG.

As a result, the tobacco smoke generated by smoking in front of the apparatus main body 2 is trapped in the swirl flow f, does not deviate from the swirl flow area, and then flows along the suction flow g flowing through the center thereof. It is rectified while passing through the perforated plate 12 and is smoothly sucked into the suction port 6.

That is, when the smoke captured by the swirling flow f is sucked along the suction flow g in the opposite direction existing at the center thereof, the swirling flow f functions as a kind of hose to suck the smoke. It is made to go to the mouth 6, so that the suction is surely eliminated.

When the sucked dirty air is sucked into the fan 18 of the suction device 17 through the suction passage 3, it is purified through the pre-filter 21, the dust collection cell 20 and the activated carbon filter 19, and again through the discharge passage 4. The gas is discharged from the turbo fin 5 into the room as a swirling flow f.

FIG. 5 shows an experimental result of the air purifying apparatus 1 according to the present invention, in which smoke in the hatched area in FIG. 5 can be captured and sucked. It covers a range of 1200 mm and a vertical direction of about 1000 mm.

The air purifiers 1 according to the present invention can be provided as a pair, and the air purifiers 6 and 6 can be used opposite to each other at a predetermined interval so that their axes are aligned. In this case, preferably, the inclination direction of the blades 7 of the turbo fins 5 is the same in both air purification devices, and the air flows flowing out of the turbo fins 5 generate swirling flows in mutually opposite directions.

In this way, if the space between the two air purifying devices is set as the smoking zone, the swirl flows discharged from the mutual turbo fins 5 are in the same direction and exist in the smoking zone. The rotation component is maintained without being lost, and the trapping rate of cigarette smoke can be significantly increased, and the suction flow exists in a linear (tornado) shape at the center of the left and right swirling flows, Since the smoke of the tobacco is sucked into any one of the suction ports 6, the smoke exhausting effect can be further enhanced.

Even when the present invention is installed in a place other than a smoking area and used for purifying indoor air, the range of suction of dirty air can be increased, and the purification efficiency can be increased.

[0036]

As described above, according to the present invention, since it has a flat front surface, it can be installed without giving a sense of incongruity even when installed along a corner of an office or a wall surface of a lobby.

When returning the purified air to the room, a swirling flow is generated and emitted forwardly around the suction port.
Cigarette smoke generated by smoking in front of the device of the present invention is captured in the swirl flow, and the once captured smoke is drawn into the suction port by the suction flow formed at the center of the swirl flow, so that the surroundings are removed. Therefore, cigarette smoke can be efficiently removed by suction.

If an annular passage is provided between the outer peripheral air guide and the inner peripheral air guide at the front portion of the turbo fin as in the second aspect, the state of being swirled by being discharged from the turbo fin is maintained. As a result, the area covered by the swirling flow (the distance from the front surface of the main body) can be increased, and the efficiency of capturing smoke can be further enhanced.

Further, if a perforated plate is provided at the front end of the suction port as in claim 3, the air sucked into the suction port is rectified and smooth suction can be performed.

Further, when two apparatuses of the present invention are used facing each other, a swirling area is clearly generated by the swirling flow from the mutual apparatuses, and the capture of smoke can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an air purification device according to the present invention.

FIG. 2 is a front view showing the inside with the front panel of FIG. 1 removed.

FIG. 3 is a vertical sectional side view of FIG. 1;

FIG. 4 is an explanatory diagram showing the flow of air during exhaust and suction.

FIG. 5 is an explanatory view showing an experimental result of a trapping area of cigarette smoke by a swirling flow of exhaust gas.

FIG. 6 is an explanatory diagram showing a relationship between a discharge path and a turbo fin.

FIG. 7 shows a turbo fin, (A) is a front view,
(B) is a side view.

FIG. 8 shows a blade of a turbo fin, (A)
Is a front view, (B) is a cross-sectional view, and (C) is a cross-sectional view of a modification.

[Explanation of symbols]

 Reference Signs List 1 air purification device 2 device main body 3 suction passage 4 discharge passage 5 turbo fin 6 suction port 7 blade 8 hood 9 outer peripheral air guide 10 inner peripheral air guide 11 annular passage 12 perforated plates 13, 14, 15, 16 partition wall 17 suction device 18 fan 23 human body sensor

Claims (4)

[Claims] An air inlet and an air outlet are provided. An air inlet is provided laterally on an upper side of the air inlet, and blades are annularly arranged around the opening of the air inlet at a required angle. A turbo fin connected to the discharge passage, wherein a lower end of the suction passage is connected to a suction side of a suction device, and a lower end of the discharge passage is connected to an exhaust side of a suction device; An air purifying device characterized by catching cigarette smoke and the like by a flow and removing the smoke from a suction port. 2. An outer air guide and an inner air guide are provided concentrically at the front of the turbo fin, and the inner surface of the outer air guide and the outer surface of the inner air guide are provided at the front of the turbo fin. The air purifying apparatus according to claim 1, further comprising an annular passage formed by: 3. The cigarette smoke purification device according to claim 2, wherein a perforated plate such as a punched metal is provided at a front end of the inner peripheral air guide. 4. An air purifying apparatus according to claim 1, wherein said air purifying apparatus is provided as a pair, and each of said air purifying apparatuses is arranged at a predetermined interval so as to oppose each suction port and turbo fin.