JP2001286712A - Air cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaning device enabling a seated person to stretch out his legs, capable of reducing the air flow feeling to one's feet and the circumference and capable of expanding not only a suction range above a suction port but also a suction range in a horizontal direction. SOLUTION: A top plate and a dust collection unit are supported by a plurality of the support legs arranged to the end parts of the top plate and an open space is ensured under the top plate 2. The support legs are made hollow and exhaust ports are formed on the side surfaces of the support legs so as to be radially directed from the center of the top plate in a plan view to be kept away from the feets of a seated person. A plurality of wind diffusion means are provided to the exhaust port of each hollow support leg to diffuse air blown off from the exhaust port after the removal of dust. A suction port having a plurality of openings crossing the normal line of a recessed curved surface at right angles is formed to the top plate to increase the wind velocity in the vertical direction of sucked air streams. A plurality of exhaust ports discharging air after the removal of dust in an obliquely upward direction are arranged to the outer edge part of the suction port and air after the removal of dust is partially blown off while revolved around the suction port to form induction air streams.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier provided with a top plate, such as an air purifier installed in a conference room or a smoking room.

[0002]

2. Description of the Related Art Conventionally, this type of air purifying apparatus has a rectangular dust collector in which a suction port is provided at a central portion of a top plate, and a dust collecting portion and a blower are accommodated in a lower surface of the top plate while also supporting the top plate. The unit is installed, smoke from the surrounding tobacco is sucked in from the inlet, dust is removed in the dust collecting section, and then exhausted in four directions from the floor or the side of the dust collecting unit. Such a top plate is disclosed in Japanese Patent Publication No. 7-67412 and Japanese Patent Laid-Open No. 9-1219.
No. 7, JP-A-9-322829 and the like.

[0003]

In such a conventional air purifying apparatus, a rectangular dust collecting unit having a dust collecting portion and a blower housed in the center of the lower surface of the top plate for supporting the top plate is installed. Therefore, there is a problem that the seated person feels cramped without stretching his legs, and it is required to secure an open space between the floor surface and the lower surface of the top plate and the dust collection unit to reduce the cramped feeling. I have.

[0004] Further, since the exhaust port for blowing out the air after dust removal is located on the lower surface of the dust collection unit serving also as a support for the top plate or on the lower side surface of the dust collection unit, there is a problem that the treated air directly hits the feet. There is a demand that the air after the treatment is not exhausted to the feet.

[0005] Further, since the air after dust removal is blown straight to the four sides of the dust collection unit, there is a problem that a person in the vicinity feels a sense of airflow, so that the exhaust direction is widened and the reach of the air after dust removal is reduced. Is required.

In addition, since the wind speed distribution of the suction air flow is distributed in a hemispherical shape from the center of the suction port, there is a problem that it is difficult for smoke of cigarettes to be sucked in the upright position. Has been requested.

[0007] Further, there is a problem in that smoke generated from the tobacco held by a seated smoker is difficult to be sucked, and it is required to expand the horizontal suction range.

The present invention has been made to solve the above-mentioned conventional problems, and enables a seated person to extend his / her legs, reduce the feeling of airflow to the feet, and reduce the exhaust wind speed of air after dust removal. It is an object of the present invention to provide an air purifying apparatus capable of reducing the pressure, increasing the suction range above the suction port, and expanding the horizontal suction range.

[0009]

In order to achieve the above-mentioned object, the air purifying apparatus of the present invention has a suction port provided on a top plate, and a dust collection section, a blower, and an exhaust port provided below the suction port. An air purifying device comprising a unit, wherein the blower is operated to suck in contaminated air at the suction port and exhaust air removed at the dust collecting section from the exhaust port, supported on a lower surface of an end of the top plate. A space is provided between the floor and the like and the top plate and the dust collecting unit so that a leg of a person can enter between the floor and the like and the floor and the like.

According to the present invention, there is provided an air purifying apparatus which secures an open space from the floor surface to the lower surface of the top plate and the dust collecting unit so that a seated person can extend his / her feet.

Further, another means is provided with a plurality of ventilation passages which connect the dust collecting unit to a hollow support leg having an exhaust port opened radially from the center of the top plate in a plan view and through which dust-removed air passes. The exhaust vent is kept away from the seated person's feet.

According to the present invention, there is provided an air purifying apparatus capable of reducing the feeling of airflow without exhausting the processed air to the feet of a seated person.

Another means is that a plurality of wind direction diffusing means are provided at the exhaust ports provided on the hollow support legs.

According to the present invention, it is possible to obtain an air purifying apparatus capable of diffusing air after dust removal blown out from an exhaust port and reducing a reaching distance.

Further, another means is provided with a suction port having a plurality of openings substantially perpendicular to the normal line of the concave curved surface.

According to the present invention, since the vertical wind speed of the suction airflow increases, an air purifying apparatus capable of expanding the suction range above the suction port can be obtained.

Another means is that a plurality of exhaust ports for exhausting the air after dust removal obliquely upward are arranged at the outer edge of the suction port.

According to the present invention, it is possible to obtain an air purifier capable of generating an induced airflow by blowing a part of the air after dust removal while swirling around the suction port, thereby extending a horizontal suction distance.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a top plate with a suction port,
A dust collecting unit having a dust collecting unit, a blower, and an exhaust port is provided below the suction port, and by operating the blower, contaminated air is sucked in at the suction port, and air removed at the dust collecting unit is discharged to the exhaust port. An air purifying device that exhausts air from the top plate, by providing support legs on the lower surface of the end of the top plate so that when installed on a floor surface or the like, a person between the floor surface and the top plate and the dust collection unit This has the effect of ensuring a space for the legs to enter.

Further, a hollow support leg having an exhaust port opened radially from the center of the top plate in plan view is connected to a dust collecting unit, and a plurality of air passages through which air after dust removal passes are provided. Yes, the air after dust removal is passed from the blower through the ventilation path to the hollow support legs, and then the exhaust ports provided on the hollow support legs are radially directed from the center of the top plate in plan view. Therefore, the air after dust removal is not exhausted to the feet of a seated person.

Further, a plurality of wind direction diffusing means are provided at an exhaust port provided on the hollow support leg, and the air is diffused and exhausted from the exhaust port of the support leg to reduce the reach of air after dust removal. It has the effect of causing

Also, there is a suction port having a plurality of openings substantially orthogonal to the normal of the concave curved surface. Since the surrounding air enters toward each of the openings, vector synthesis of the suction airflow is performed. Has the effect of increasing the wind speed component flowing from the vertical direction toward the suction port.

Further, a plurality of exhaust ports for exhausting part of the air after dust removal obliquely upward are arranged at the outer edge of the suction port, and are formed by a swirling airflow blown obliquely upward and formed. This has the effect of generating an induced airflow that entrains the surrounding air.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0025]

(Embodiment 1) As shown in FIGS. 1 and 2,
A rectangular top plate 2 having a rectangular suction port 1 at the center, a thin turbo fan as a blower 3 and a thin HEPA filter as a dust collecting section 4 are housed in a lower portion of the suction port 1, and exhaust is provided on all sides. Arranging a rectangular dust collection unit 6 having a mouth 5, and separating the top plate 2 and supporting legs 7 supporting the dust collection unit 6 from the dust collection unit 6 and arranging one at each of the four corners of the top plate 2. It consists of.

In the above configuration, the turbo fan and the HEP
The A filter is housed inside, and the top plate 2 and the support function of the dust collection unit 6 are separated from the dust collection unit 6 having the exhaust ports 5 on all sides, and are disposed as support legs 7 at the four corners of the top plate 2. As a result, the dust collection unit 6 has only the functions of sucking, removing dust, and exhausting the smoke of cigarettes, can be made thinner, does not need to support the top plate 2, and reduces the space below the top plate occupied by the dust collection unit 6. it can.

Since the support legs for supporting the top plate and the dust collection unit are separated from the dust collection unit and arranged at the four corners of the top plate, the dust collection unit does not need to support the top plate and can be made thin. Thus, it is possible to secure a height at which a person seated between the floor surface and the lower surface of the top board can extend his or her feet.

In the embodiment, the shape of the suction port is rectangular, but other shapes may be used, and there is no difference in the effects. In addition, although the shape of the top plate is rectangular, other shapes may be used, and there is no difference in the effects. Although a thin turbo fan is used as the blower, another fan may be used as long as the thickness of the blower is small, and there is no difference in the operational effects. Further, although a thin HEPA filter is used as the dust collecting portion, another dust collecting device may be used as long as the thickness is small and the dust removing ability is not reduced, and the operation effect is not different. Further, although the shape of the dust collection unit is rectangular, other shapes may be used, and there is no difference in operation and effect. Also,
Although the support legs are arranged one by one at the four corners of the top plate, one support leg may be arranged at the center of the top plate, and there is no difference in the operation and effect.

(Embodiment 2) The same parts as those in Embodiment 1 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIGS. 3 and 4, a rectangular top plate 2 having a rectangular suction port 1 at the center, and a thin turbofan as a blower 4 and a dust collecting section 5 below the suction port 1 as a blower 4. A rectangular dust collecting unit 8 containing a thin HEPA filter is arranged, and an exhaust port 10 radially outwardly directed from the center 9 of the top plate, and hollow support legs for supporting the top plate 2 and the dust collecting unit 8 are provided. 11 is separated from the dust collection unit 8 and the top plate 2 is separated.
Are disposed one at a time in each of the four corners, and are constituted by ventilation passages 12 connecting the rectangular dust collection unit 8 and the hollow support legs 11 arranged in the four corners of the top plate 2.

In the above configuration, the smoke of tobacco generated in the space above the top surface of the top plate is removed by the thin turbo fan.
After being sucked from the rectangular suction port 1 provided at the center of the rectangular top plate 2 and being dust-removed by the thin HEPA filter, it passes through the ventilation passage 12 connecting the rectangular dust collection unit 8 and the hollow support legs 11. Then, it is led to the hollow support leg 11,
Since the air is exhausted from the exhaust port 10 radially outwardly directed from the center 9 of the top plate to the hollow support leg 11, air after dust removal is not exhausted to the feet of the seated person.

As described above, by disposing the hollow support legs having the exhaust ports radially outward from the center of the top plate at the four corners of the top plate, the exhaust ports can be kept away from the feet of the seated person, and Since the air after dust removal is exhausted to the outside of the top plate, the feeling of airflow at the feet of the occupant can be reduced.

In the embodiment, the shape of the suction port is rectangular, but other shapes may be used, and there is no difference in the effect. In addition, although the shape of the top plate is rectangular, other shapes may be used, and there is no difference in the effects. Although a thin turbo fan is used as the blower, another fan may be used as long as the thickness of the blower is small, and there is no difference in the operational effects. Further, although a thin HEPA filter is used as the dust collecting unit, another dust collecting device may be used as long as the thickness is small and the dust removing ability is not reduced, and there is no difference in the operation effect. Further, although the shape of the dust collection unit is rectangular, other shapes may be used, and there is no difference in operation and effect.

(Embodiment 3) The same parts as those in Embodiments 1 and 2 are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIGS. 5 and 6, the top plate 2 and the dust collection unit 8 are supported, and the top plate is provided in hollow support legs 11 arranged one at each of the four corners of the top plate. A hollow support leg 11 is provided at an exhaust port 10 which is directed radially outward from the center.
And a plate-like wind direction diffusion plate 13 radially arranged so that the diffusion angle is within 90 degrees in the horizontal direction with respect to the center.

In the above configuration, the air after dust removal guided to the hollow support legs 11 is supplied to the hollow support legs 11 by the top plate center 9.
The plate-shaped wind direction diffusion plate 13 radially arranged so that the diffusion angle is within 90 degrees horizontally with respect to the center of the hollow support leg 11 to the exhaust port 10 directed radially outward from
Since the air is diffused and exhausted within 90 degrees in a horizontal cross section from the exhaust port 10, the residual wind speed of the air after dust removal decreases, and the reaching distance decreases.

As described above, by providing the wind direction diffusion plate for diffusing the exhaust direction of the air after dust removal at the exhaust port, the residual wind speed of the air after dust removal decreases, and the reaching distance decreases, so that the persons in the vicinity are removed. The feeling of airflow to the air can be reduced.

Although the wind direction diffusing plate is plate-shaped in the embodiment, it may be curved, and there is no difference in the operation and effect.

(Embodiment 4) It should be noted that Embodiment 1, Embodiment 2,
The same parts as those in the third embodiment are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIGS. 7 and 8, one opening 15a is arranged at the center of the concave curved surface 14, and the total opening area around the opening 15a is 60% of the surface area of the concave curved surface 14. A plurality of openings 15 are arranged so as to face each other, and are constituted by suction openings 16 which are circular in plan view.

In the above configuration, the suction airflow 17 is substantially perpendicular to the normal 18 of the concave curved surface 14 and faces the opening 15
Vectors 19b and 19c sucked into b and 15c
, The vector is vertically synthesized.
0 is generated. This vertical downward vector 20 is further combined with the vector 19a sucked into the central opening 15a of the concave curved surface 14, and the vertical wind speed increases, so that the suction range above the suction port 17 is expanded.

As described above, the openings that are substantially perpendicular to the normal line of the concave curved surface generate the vector composition of the suction airflow and increase the vertical wind speed, so that the suction range above the suction port is expanded. it can.

Although the ratio of the total opening area of the openings to the surface area of the concave curved surface was set to 60%, the ratio was 40% to 60%.
%, Other ratios may be used, and there is no difference in the effect and effect. Also, although the suction port is circular in plan view,
Other shapes may be used as long as a concave curved surface can be formed, and there is no difference in the effects.

(Embodiment 5) It should be noted that Embodiment 1, Embodiment 2,
The same parts as those in the third and fourth embodiments are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 9, a part of the air after dust removal is tangential to the circular suction port 16 in plan view and
An upper exhaust port 21 having an opening set to exhaust obliquely upward at an angle of 60 degrees upward from the upper surface of the rectangular top plate 2 is provided at an outer edge portion 22 of a suction port 16 provided at the center of the upper surface of the rectangular top plate 2.
Are arranged by four.

In the above configuration, a part of the air after dust removal is supplied from the four upper exhaust ports 21 arranged on the outer edge 22 of the circular suction port 16 in the tangential direction of the circular suction port 16 and in the ceiling direction. Since the air is exhausted obliquely upward at an angle of 60 degrees upward from the upper surface of the plate, a swirling airflow 23 is formed around the circular suction port 16. The swirling airflow 23 generates an induced airflow 24 from the horizontal direction, and the surrounding air is entrained, the wind speed component in the horizontal direction increases, and the suction range in the horizontal direction expands.

As described above, a part of the air after dust removal from the upper exhaust port is partly tangential to the circular suction port and is directed upward.
By blowing diagonally upward at an angle of degree, a swirling airflow is formed, which generates an induced airflow that entrains the surrounding air, increasing the horizontal wind speed and expanding the suction range, and from the smoker's mouth of the seated smoker The generated smoke can be sucked in without being diffused to the surroundings.

Although the number of upper exhaust ports forming the swirling airflow is four, any other number may be used as long as the swirling airflow can be formed, and there is no difference in the operation and effect.

[0049]

As is clear from the above embodiments, according to the present invention, an air purifying apparatus can be provided which has the effect of extending the foot of a seated person.

Further, it is possible to provide an air purifying device which has an effect of reducing a feeling of airflow at the feet of a seated person.

Further, it is possible to provide an air purifying device having an effect of reducing a feeling of airflow to surrounding people.

Further, it is possible to provide an air purifying apparatus which has an effect of inhaling mainstream smoke and sidestream smoke of a standing smoker without diffusing them.

Further, it is possible to provide an air purifying apparatus which has an effect of sucking the sidestream smoke emitted from the smoker's mouth tobacco without diffusing.

[Brief description of the drawings]

FIG. 1 is a perspective view of an air cleaning device according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the same.

FIG. 3 is a perspective view of an air cleaning device according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of the same.

FIG. 5 is a perspective plan view of an air purifying apparatus according to a third embodiment of the present invention.

FIG. 6 is a horizontal sectional view of the support leg.

FIG. 7 is a perspective view of an air cleaning device according to a fourth embodiment of the present invention.

FIG. 8 is a vertical sectional view of the suction port.

FIG. 9 is a perspective view of an air cleaning device according to a fifth embodiment of the present invention.

[Description of Signs] 1 Suction port 2 Top plate 3 Blower 4 Dust collecting unit 5 Exhaust port 6 Dust collecting unit 7 Support leg 9 Center of top plate 10 Exhaust port 11 Hollow support leg 12 Ventilation path 13 Wind diffusion plate 14 Concave curved surface 15 Opening 16 Suction port 18 Normal line 21 Upper exhaust port 22 Outer edge of suction port

Claims (5)

[Claims] 1. A suction port is provided on a top plate, and a dust collection unit having a dust collection unit, a blower, and an exhaust port is provided below the suction port, and by operating the blower, contaminated air is discharged from the suction port. An air purifying device that sucks and exhausts air removed by a dust collecting unit from the exhaust port, wherein a support leg is provided on an end lower surface of the top plate, and the floor is installed on a floor or the like. An air purifying device, wherein a space is provided between a top plate and the dust collecting unit so that a leg of a person can enter. 2. A plurality of ventilation paths for connecting a dust collecting unit to a hollow supporting leg having an exhaust port opened radially from a center of a top plate in a plan view and through which dust-removed air passes.
2. The air purifying apparatus according to claim 1, wherein the exhaust port is kept away from a foot of a seated person. 3. The air purifying apparatus according to claim 1, wherein a plurality of wind direction diffusing means are provided at exhaust ports provided on the hollow support legs. 4. The air purifying apparatus according to claim 1, further comprising a suction port having a plurality of openings substantially orthogonal to a normal line of the concave curved surface. 5. The air purifying apparatus according to claim 4, wherein a plurality of upper exhaust ports for partially exhausting the air after dust removal obliquely upward are arranged at an outer edge of the suction port.