JP2001201123A - Smoke absorption apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a turning flow which is stable, independently of the situations of the surroundings. SOLUTION: A cylindrical hole 28, with an upper end constructed as a circular blow-off outlet 22 and with a lower end closed, is provided in a surface plate 21a of a table and the like 21, and there is formed a suction hole 24 in a roof 23 provided on the upper portion of the table and the like 21, and there are formed a filter 3 and a fan 5 both for filtrating and circulating blow- off air containing smoke of a cigarette and the like sucked from the suction hole 24. The filtrated air is guided to the foregoing cylindrical hole 28 via an exhaust duct 12 to form a turning flow in the hole, which flow is then blown out from the cylindrical blow-off outlet 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a smoke-absorbing device for sucking smoke, odor, etc. of cigarettes and the like.

[0002]

2. Description of the Related Art Tobacco smoke from smoking affects not only smokers but also harmful substances contained in sidestream smoke to nearby non-smokers (indirect smokers). In Japan, the coexistence of smokers and non-smokers has become a serious social problem. As a method of purifying contaminated air, a method of introducing fresh outside air using a ventilation device to perform ventilation, and a method of purifying contaminated air in a room using an air purifier can be considered. In the case of ventilation, if smoking is performed in the office, the generated smoke and odor are once spread in the airflow in the office and diffused throughout the office. When cleaning contaminated air using an air purifier, a purifier having a wide smoke absorption range is effective.

FIG. 5 shows a conventional apparatus for treating cigarette smoke described in Japanese Patent Application Laid-Open No. 4-356644. Where 1
Is a desk, 1a is a desk top plate, 2 is a smoke exhaust treatment chamber, 3 is a pre-filter, 4 is a deodorizing filter, 7 is an air supply duct, 9 is a nozzle, 11 Is an exhaust hood, and 12 is an exhaust duct.

Next, the operation will be described. A pre-filter 3 and a deodorizing filter 4 connected to the pre-filter 3 are provided in a smoke exhaust processing chamber 2 attached to the lower surface of the desk 1a. The pre-filter 3 is made of a synthetic resin material and filters air including dust and the like in greetings and smoke. Activated carbon is used for the deodorizing filter 14 connected to the pre-filter 3.
When the air filtered by the filter passes through the deodorizing filter 4, it absorbs the irritating odor contained in the cigarette smoke, deodorizes it, and restores it to clean air.

A circulating fan 5 is attached to the smoke exhaust processing chamber 2 and sends clean air that has passed through the pre-filter 3 and the deodorizing filter 4 to an air duct 7 below the front plate 1a of the desk. Spread in four directions on the underside of the desk top plate 1a. Nozzles 9 at the four corners of the desk top plate 1a
And discharges the air from the air supply duct 7 toward above the desk 1.

By adjusting the amount and direction of discharge of air from the nozzle 9, air around the desk 1 is attracted to cause a weak swirling flow on the upper surface of the desk 1.
Exhaust hood 11 arranged on the upper surface of the desk 1 by the activation of
An artificial tornado is generated due to the surplus action with the negative pressure zone generated inside. Then, the tornado concentrates in the longitudinal direction of the central portion thereof while sucking smoke and irritating odor to be diffused by smoking, and is guided from the exhaust hood 11 into the smoke exhaust processing chamber 2 through the exhaust duct 12.

In the smoke exhaust treatment chamber 2,
The air introduced into the flue gas chamber 2 at a negative pressure due to the activation of the circulation fan 5 is filtered through the pre-filter 3 and the deodorizing filter 4 and reduced to clean air. Then, the cleaned air is again discharged from the nozzle 9 by the circulation fan 5 to generate the tornado described above. By repeating such operations, the smoker does not deteriorate the surrounding environment and does not bother others.

[0008]

When smoking in an office with only ventilation, the smoke or smell of the smoke spreads throughout the office. As a result, non-smokers in the office also inhale the air contaminated by tobacco and suffer from secondhand smoke. Therefore, it is desirable to install a treatment device for the above-mentioned conventional cigarette smoke or the like, which collects the smoke to be diffused by the updraft generated by the combustion before the smoke is diffused. However, in this conventional device, the smoker or the like becomes an obstacle to the air causing the swirling flow, so that it is difficult to form a swirling flow or an artificial tornado which is a feature of the present device.
An object of the present invention is to solve such a conventional problem, and it is an object of the present invention to form a stable swirling flow regardless of surrounding conditions.

[0009]

According to the present invention, there is provided a smoke-absorbing device provided with a predetermined depth on a front plate and having a hole having an outlet formed at an end thereof, and a space for the outlet. A suction port opposed to the air inlet, a filter for filtering air sucked from the suction port, and a duct for guiding the air filtered by the filter to the hole, generating a swirling flow in the hole, A stream is blown out from the outlet.

[0010] Further, a swirling flow is generated in the hole by discharging air from the duct along an inner side surface forming the hole.

According to the present invention, there is provided a smoke suction device provided on a front plate with a predetermined depth, a cylindrical hole having an air outlet formed therein, and an air inlet opposed to the air outlet with a space therebetween. And a filter for filtering air sucked from the suction port, a duct for guiding the air filtered by the filter to the hole, and a fan for sending the air sucked from the suction port to the hole. Is connected to the inner surface forming the hole, and the axis of the duct is displaced from the center of the hole.

[0012] Further, the inner wall surface of the duct extends along the circumferential direction of the inner surface.

Further, the duct is inclined upward from the horizontal direction.

Still further, the air outlet is projected from the front plate.

Further, a plurality of the outlets are provided.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The smoke-absorbing device according to the present invention adversely affects non-smokers in the vicinity when smoking on a table used for a meeting or a meeting in an office or smoking on a counter in a refreshing corner. It can be used as a smoke separating device that does not give. The details will be described below.

Embodiment 1 FIG. 1 shows the configuration of the smoke absorption device in the first embodiment. FIG. 2 shows a cross-sectional view taken along line II in FIG. Here, 21 is a table or counter (main body), 21a is a front plate of the table or counter 21, and 22 is a circular outlet formed in the front plate 21a.

Reference numeral 23 denotes a roof of a table or counter 21 which is provided so as to oppose a part of a surface of a front plate 21a in which a circular outlet 22 is formed, with a space therebetween. 24 is a suction port provided on the roof 23,
The suction port 24 has a diameter of the circular outlet 22 (Φ200 to 300 m).
m is desirable. ) Is set at a position that is larger and covers the circular outlet 22. 28 is a table or counter 21
The hole has a predetermined depth, and is provided at the upper end of the cylindrical hole 28 with a circular outlet 22.
Is formed, and the lower end is closed.

The roof 23 of the table or counter 21
Is provided with a circulation fan 5, a pre-filter 3 and a deodorizing filter 4. The circulation fan 5 sends the air sucked from the suction port 24 to the cylindrical hole 28 via the pre-filter 3 and the deodorizing filter 4. The pre-filter 3 is formed of a synthetic resin-based material, and filters air including dust and the like in greetings and smoke. Activated carbon is used in the deodorizing filter 14, and when the air filtered by the pre-filter 3 passes through the deodorizing filter 4, it absorbs the stimulating odor contained in the smoke of cigarettes and deodorizes. Restore to clean air. In addition, one end of the exhaust duct 12 is connected to the deodorizing filter 4 side, and the other end is connected to an inner surface forming a cylindrical hole 28. In addition, other parts shown in the figure are the same as those already described, and the description is omitted. Here, the height of the roof 23 is preferably about 80 to 100 cm from the table or counter top plate 21a.

Next, the operation will be described. On the roof 23, the surrounding air is sucked from the suction port 24 by the circulation fan 5, the harmful substances contained in the smoke of the tobacco are removed by the pre-filter 3 and the deodorizing filter 4, and the irritating odor is deodorized to clean air. Let it be restored. The filtered clean air is led to a table or counter 21 through the exhaust duct 12. The clean air passes through the exhaust dust 12,
It is discharged into a cylindrical hole 28. The cleaning air is a cylindrical hole 2
The swirl flow is formed in the cylindrical hole 28 by being discharged from the exhaust dust 12 along the inner surface forming the nozzle 8, and is blown out as a swirl flow from the circular outlet 22.

Here, the principle of forming a swirling flow in the cylindrical hole 28 will be described with reference to FIG. In FIG. 2, reference numeral 121 denotes a central axis of the exhaust duct, and reference numeral 281 denotes a circular center of the cylindrical hole 28. FIG. 2A shows the exhaust duct 12.
Is vertically introduced into the cylindrical hole 28.
A circular center 281 of a cylindrical hole 28 on the axis of the exhaust duct 12
Is located, the air discharged from the exhaust duct 12 collides with the inner surface of the cylindrical hole 28 and flows in two parts, so that it is difficult to form a swirling flow in the cylindrical hole 28. .

However, as shown in FIGS. 2B and 2C, when the axis 121 of the exhaust duct 12 is shifted with respect to the circular center 281 of the cylindrical hole 28, Can form a swirling flow. The air discharged from the exhaust duct 12 flows along the inner side surface forming the cylindrical hole 28, and a swirling flow is formed.

In particular, as shown in FIG. 2C, when the inner wall of the exhaust duct 12 and the inner surface forming the cylindrical hole 28 are arranged along the circumferential direction, the air discharged from the exhaust duct 12 All of the components flow along the inner surface forming the cylindrical hole 28, so that a swirling flow can be efficiently formed. FIGS. 3 (a) and 3 (b) show FIG.
FIG. 3C is a vertical sectional view taken along line III, and FIG. 3A shows a case where the exhaust duct 12 is a tube having a rectangular cross section, and FIG. 3B shows a case where the exhaust duct 12 is a tube having a circular cross section. In this way, by arranging the inner side wall of the exhaust duct 12 and the inner side surface forming the cylindrical hole 28 in the circumferential direction regardless of the cross-sectional shape of the exhaust duct 12, a swirling flow is efficiently formed. It becomes possible.

The swirling flow continues to swirl even after passing through the circular outlet 22 on the front plate 21a of the table or the counter, and draws in contaminated air containing smoke and smell of the surrounding tobacco while sucking the contaminated air on the lower surface of the roof 23. It flows toward 24.
The cigarette smoke and smell are collected in the inlet 24 before dispersing into the office without opposing the updraft generated by the combustion. The collected contaminated air is cleaned of harmful substances and odors by the filters 3 and 4 included in the roof 23, carried by the exhaust duct 12, forms a swirling flow through the cylindrical hole 28, and blows out from the circular outlet 22. Sometimes it is always purified air. By repeating such an operation, smoke and odor of tobacco are efficiently removed.

Since the swirling flow obtained by this device is formed in the cylindrical hole 28 in the table or counter 21, the swirling flow already exits from the circular outlet 22 on the front plate 21 a of the table or counter. Blow out as Therefore, a stable swirling airflow can be formed without being affected by people or obstacles around the table or the counter, and smoke and smell of smoke leather can be collected.
Further, in the conventional smoke absorption device, it was necessary to adjust the amount and the direction of the air discharged from the plurality of nozzles in order to generate the swirling flow, but in the case of this embodiment,
Since the swirling flow is generated on the inner surface where the cylindrical hole 28 is formed, the swirling flow can be easily generated.

Although FIG. 1 illustrates the case where the shaft 121 of the exhaust duct 12 is connected horizontally to the cylindrical hole 28, the shaft 121 of the exhaust duct 12 is positioned above the horizontal as shown in FIG. It is also possible to connect at an angle. In this case, since the force component in the rising direction increases, the rising component of the swirling airflow also increases.

Embodiment 2 FIG. FIG. 3 is a view showing the structure of the circular outlet 22 according to the second embodiment. In this embodiment, the circular outlet 22 protrudes from the front plate 21a of the table or the counter 21, and the other configuration is the same as that of the first embodiment, and the description is omitted. Round outlet 2
The height of the protrusion 2 may be arbitrarily set, and the higher the height is, the wider the range of sucking the contaminated air including the smoke and odor of the surrounding cigarettes is, but it is desirable to be about 15 to 20 cm because it hinders the view. In this way, the smoke and smell of tobacco diffused to a higher position on the table or counter can be drawn into the swirling airflow and guided to the suction hole 24 of the roof 23.

Embodiment 3 FIG. 4 is a diagram showing the structure of the circular outlet 22 according to the third embodiment. In this embodiment, a plurality of circular outlets 22 are provided on a front plate 21a of a table or counter 21. The circular outlet 22 is projected from the front plate 21a. The other parts are the same as those in the first embodiment, and a description thereof will be omitted.
In this embodiment, it is possible to collect smoke such as tobacco that spreads over a wider area by swirling flows blown out from the plurality of circular outlets 22.

In the above-described embodiment, the cylindrical hole 28
Although the circular outlet 22 is described as having a perfectly circular cross section, it may have another shape such as an ellipse as long as a swirling flow can be formed in the hole and the swirling flow can be blown out.

[0030]

The smoke-absorbing device according to the present invention is provided with a predetermined depth on the top plate, and is opposed to a hole having an outlet at an end thereof with a space therebetween. A suction port, a filter for filtering air sucked from the suction port, and a duct for guiding the air filtered by the filter to the hole, generating a swirl flow in the hole, and blowing the swirl flow Since air is blown out from the outlet, a swirling flow can be formed stably.

Further, since the swirling flow is generated in the hole by discharging the air from the duct along the inner side surface forming the hole, the swirling flow can be easily formed.

The smoke-absorbing device according to the present invention is provided with a predetermined depth on a front plate, a cylindrical hole having an air outlet formed therein, and an air inlet opposed to the air outlet with a space therebetween. And a filter for filtering air sucked from the suction port, a duct for guiding the air filtered by the filter to the hole, and a fan for sending the air sucked from the suction port to the hole. Is connected to the inner surface forming the hole, and the axis of the duct is displaced from the center of the hole, so that a swirling flow can be formed stably.

Further, since the inner wall surface of the duct extends along the circumferential direction of the inner surface, a swirling flow can be efficiently formed.

Further, since the duct is inclined upward from the horizontal direction, an upward airflow can be easily obtained.

Further, since the air outlet is projected from the top plate, it is possible to inhale smoke that diffuses to a high position on the top plate.

Further, since a plurality of the air outlets are provided, it is possible to suck smoke which diffuses more widely.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a smoke absorption device according to a first embodiment.

FIG. 2 is a cross-sectional view of the smoke absorption device according to the first embodiment.

FIG. 3 is a vertical sectional view of the smoke absorption device in the first embodiment.

FIG. 4 is a diagram showing another connection example of the exhaust duct 12 to the cylindrical hole 28.

FIG. 5 is an explanatory diagram illustrating a smoke absorption device according to a second embodiment.

FIG. 6 is an explanatory diagram illustrating a smoke absorption device according to a third embodiment.

FIG. 7 is a view showing a conventional smoke absorption device.

[Explanation of symbols]

1 desk, 1a desk top plate, 2 flue gas treatment chamber, 3 pre-filter, 4 deodorizing filter, 5 circulation fan, 7 air duct, 9 nozzles, 11 exhaust hood, 12 exhaust duct, 21 table or counter, 21a table Board, 22 circular outlet, 23 roof, 2
8 Cylindrical hole, 121 Exhaust duct axis, 281 Center of circle of cylindrical hole 28.

Claims (7)

[Claims] 1. A device having a predetermined depth on a top plate,
A hole having an outlet formed at an end thereof, a suction port opposed to the air outlet with a space therebetween, a filter for filtering air taken in from the suction port, and a hole for filtering air filtered by the filter. A duct that guides the swirling flow in the hole, and blows out the swirling flow from the outlet. 2. The smoke-absorbing device according to claim 1, wherein a swirling flow is generated in the hole by discharging air from the duct along an inner surface forming the hole. 3. It is provided with a predetermined depth on the front plate,
A cylindrical hole in which an air outlet is formed, an air inlet opposed to the air outlet with a space therebetween, a filter for filtering air taken in from the air inlet, and a filter for filtering the air filtered by the filter. And a fan for sending air sucked from the suction port to the hole, connecting one end of the duct to an inner surface forming the hole, and displacing the axis of the duct from the center of the hole. A smoke evacuator characterized in that it is arranged in a position. 4. The smoke-absorbing device according to claim 3, wherein an inner wall surface of the duct extends along a circumferential direction of the inner surface. 5. The smoke-absorbing device according to claim 3, wherein the duct is inclined above the horizontal direction. 6. The smoke-absorbing device according to claim 1, wherein the outlet is projected from the top plate. 7. The smoke-absorbing device according to claim 1, wherein a plurality of the outlets are provided.