JP3789779B2 - Air purification device with top plate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a furniture-type air purification apparatus having a top plate, such as a table-type air purification apparatus, a counter-type air purification apparatus, or a stand-type air purification apparatus.
[0002]
[Prior art]
This type of air purification device with a top plate generally incorporates a purification mechanism such as a filter or a fan in a cylindrical or box-type body attached to the lower surface of the top plate.
[0003]
The purified air is blown out directly from the lower surface of the body to the floor (see, for example, Japanese Patent Application Laid-Open No. 9-155231), or is discharged outward from a blowing port formed on the side surface of the body.
[0004]
In addition, in Design Registration No. 1052403, while air outlets with upward openings are provided on the left and right sides of the body, a suction duct having a reverse L-shape and a height of human height is attached to one side of the top plate. An air purification device is disclosed in which cigarette smoke is pushed to a suction port at an upper portion of a suction duct by an air flow caused by ejection of purified air.
[0005]
Japanese Patent Application Laid-Open No. 8-82430 discloses that four pipes are provided by erecting four pipes at the peripheral edge of the top plate and ejecting purified air from the upper ends of these pipes in a substantially horizontal direction. It is described that a swirling flow is formed in a space surrounded by.
[0006]
Further, in Japanese Patent Laid-Open No. 10-281509, purified air is guided above the top plate by an inverted L-shaped duct standing on the rear of the top plate, and the purified air is ejected downward from the end of the duct. Is disclosed.
[0007]
[Problems to be solved by the invention]
The Design Registration No. 1052403, Japanese Patent Application Laid-Open No. 8-82430, and Japanese Patent Application Laid-Open No. 10-281509 are designed to improve the suction efficiency of dirty air by using the air flow of purified air.
[0008]
However, in these configurations, the ducts and pipes stand up from the periphery and rear of the top plate, so there is a problem that the appearance and the ducts and pipes get in the way. The place was hard to use.
[0009]
On the other hand, what blows out purified air at the lower part of the main body as in JP-A-9-155231 has the advantage of a clean design, but it can be used in cold regions ( or rooms with low room temperature) When a woman who wears the garment uses it, there is a problem that cold purified air hits a user's foot (shin) and feels cold or uncomfortable.
[0010]
The present invention aims to improve such a current situation.
[0011]
[Means for Solving the Problems]
Air in the invention of claim 1, the air purification device includes a top plate capable of enclosing a person around, and a main body portion disposed below the top plate, the top plate is dirty The suction port is open.
[0012]
On the other hand, wherein the body portion, and a cleaning mechanism having a filter and a fan for purifying contaminated air, is discharged from the purifying mechanism is provided with a outlet for releasing the air to the outside, the filter Is disposed below the suction port, and the fan is disposed below the filter. For this reason, air flows downward in the purification mechanism. Then, in the main body portion, the lower surface of the top plate after the recirculated air flows upward through a recirculation passage for recirculating part of the air discharged from the purifying mechanism portion to a portion outside the purifying mechanism portion in plan view. In addition, a circulation air blowing port is provided in the vicinity of the top plate or in the top plate itself for returning the air returned to the return passage to the vicinity of the suction port.
[0013]
According to a second aspect of the present invention, in the first aspect, an air collecting head having a rectangular shape in a plan view capable of sucking dirty air at a position higher than the top plate is disposed above the suction port, and the air collecting The circulation port is arranged at each corner portion of the head .
[0014]
[Operation and effect of the invention]
In the present invention, a part of the purified air is released in the vicinity of the top plate through the reflux passage, so that the amount of the purified air released from the outlet to the outside of the main body is reduced. Accordingly, it is possible to prevent or reduce the user from being adversely affected by the purified air by suppressing the purified air from hitting the user's foot.
[0015]
According to the second aspect of the present invention, dirty air on the top plate can be pushed to the air collecting head by the purified air that has been refluxed, so that the suction efficiency of dirty air (cigarette smoke) can be improved. In this case, there is no need to erect ducts or pipes around or outside the top board, so the appearance does not deteriorate or disturb people.
[0016]
Also, once it clarified because through again filter part of the air, i.e., a part of air circulating through the filter can also improve the deodorization function.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0018]
(1). First embodiment (FIGS. 1 to 5)
1 to 5 show the first embodiment. 1 is an overall perspective view, FIG. 2 is a front view, FIG. 3 is a sectional view taken along line III-III in FIG. 1, FIG. 4 is a sectional view taken along line IV-IV in FIG. It is.
[0019]
This embodiment is applied to a table-type air purification device that can be used by a person sitting on a chair. The air purification device includes a top plate 1 that is substantially rectangular in plan view, and a main body 2 that is disposed below the top plate 1. I have.
[0020]
A suction port 3 is open at the center of the top plate 1, and a suction head 4 made of a perforated plate is detachably attached to the suction port 3. The lower part of the outer peripheral surface of the air collecting head 4 is a truncated cone part 4a, and the upper part is a hang part 4b inclined to the inverted truncated cone part.
[0021]
The main body 2 includes a body 5 having a substantially square shape (box shape) in plan view with a corner portion chamfered, and legs 6 extending radially from the lower end of the corner portion of the body 5. A maintenance door 7 is provided on one surface of the body 5.
[0022]
As shown in FIG. 2, the body 5 includes a filter unit 8 and a suction fan (sirocco fan) 10 driven by a motor 9 as a purification mechanism . The lower end of the body 5 is closed by the bottom plate 11, and the motor 9 and the fan 10 are fixed to the bottom plate 11.
[0023]
The bottom plate 11 is located slightly above the lower surface of the body 5, and the left and right sides thereof are stepped down in front view. At the corner portion and the left and right side surfaces of the body 5, there are vacant outlets 12 made up of a number of long hole groups. The outlet 12 may be provided only on the side surface of the body 4 or only on the corner.
[0024]
It should be noted that a dust removal net, a photocatalytic unit or an activated carbon unit for enhancing the sterilizing / deodorizing function, and the like may be provided in the body 5 in parallel.
[0025]
As shown in FIGS. 2 and 3, a partition wall 13 is disposed inside the left and right side plates of the body 5, and a horizontal duct is formed above the body 5 so that a gap is formed between the top plate 1 and the body 5. 14, thereby forming a reflux passage 15 extending toward the left and right sides of the outlet 4.
[0026]
Furthermore, I urchin shown in FIGS. 4 and 5, around the outlet 3, an annular circulation jet ports 16 in communication with the recirculation passage 15 is open upward. The circulation port 16 is located below the trapezoidal portion 4 a in the air collecting head 4.
[0027]
When the air purification device is operated , the air on the top plate is sucked by the fan 8 and flows downward from the suction port 3. A part of the clean spent air is ejected from the circulating gas nozzle 16 flows upwardly recirculation passage 15 as indicated by the dotted arrow b in FIG. 2, it is sucked again from gas collector head 4 inside the body 3 . That is, a part of the purified air is circulated and further purified.
[0028]
Then, when the purified air is ejected from the circulation jet port 16 and sucked from the hang portion 4b of the gas collection head 4, the purified air becomes an upward pressure wind, and therefore air collected around the gas collection head ( Cigarette smoke) is pushed by the air collecting head 4 to efficiently suck dirty air.
[0029]
Further, as indicated by an arrow A in FIG. 5, the air near the top surface of the top plate 1 is blown around the air collecting head 4 due to the negative pressure effect caused by the upward emission of the purified air. As a result, an air flow that attracts the air is generated, so that dirty air drifting near the top surface of the top plate 1 can be effectively sucked.
[0030]
Further, since the amount of purified air blown out from the outlet 12 of the body 5 is reduced, it is possible to prevent or suppress the purified air blown from the lower part of the body 5 from strongly hitting a person's foot (shin). The adverse effects of can be improved. In the case of this embodiment, the amount of purified air returned to the reflux passage 15 may be 10 to 20%, for example.
[0031]
In the present embodiment, the purified air passes through the trapezoidal portion 4a of the air collecting head 4 and then enters the hang portion 4b. However, the air collecting head 4 is placed on the upper end of the straight cylindrical portion. May be formed in the shape of a mushroom that is spread, and a circulation port may be opened below the hung portion.
[0032]
In addition, when the outer peripheral surface of the air collecting head 4 is straight, the circulation jet port 16 may be provided so as to surround the air collecting head 4. Further, the circulation port 16 does not need to be opened over the entire circumference, and may be opened in a state of jumping around the air collecting head 4.
[0033]
(2). The second embodiment (FIGS. 6 to 8)
6 to 8 show a second embodiment. 6 is an overall perspective view, FIG. 7 is a plan view of the air collection head, FIG. 8A is a cross-sectional view taken along line AA in FIG. 7, and FIG. is there.
[0034]
In this embodiment, the air outlet 12 is provided at the corner portion of the body 5, while the air collecting head 4 is formed in a straight shape with its substantially lower half portion and a trapezoidal upper half portion. The substantially lower half is protected by a perforated plate (or fence) 4d, and the upper half of the trapezoidal shape is entirely open except for the corner 4c.
[0035]
A reflux passage 15 extends on both the left and right sides of the air collecting head 4 below the top plate 1. The purified air that has flowed back to the reflux passage 15 is supplied to the top plate 1 at each corner portion 4 c of the air collecting head 4. , A circulation air outlet 16 for returning to the suction port 3 is vacant. A ventilation plate 4e is disposed inside each corner portion 15.
[0036]
In this embodiment, a portion of the clean spent air passing through the filter unit 8 (e.g., 10-20%) is returned to the mouth 3 narrowing have intake through the recirculation passage 15, passes through the filter unit 8 again.
[0037]
For this reason, it is possible to reduce or reduce the amount of air ejected from the outlet 12 and to prevent or suppress adverse effects on people due to cold air. Further, even if the filter unit 8 is clogged and the odor remains slightly in the air that has passed through the filter, the purification performance can be maintained.
[0038]
The outlet 12 may be provided on the side surface of the body 5. Moreover, you may provide the wind direction guide means to guide so that the purified air which blown off from the body 5 flows in the periphery periphery direction of the body 5. Further, a resistor such as a baffle plate for reducing the outward ejection speed of the purified air may be provided in the body 5 near the outlet 12.
[0039]
(2). Third embodiment (FIG. 9)
In the third embodiment shown in FIG. 9, the air collecting head 4 is formed in an umbrella shape with a suction pipe 4 c extending high and a large area intake portion 4 d provided at the upper end thereof. And the circulation jet port 16 which ejects the recirculated purified air toward the intake portion 4d is provided around the intake pipe 4c in the suction port of the top plate 1.
[0040]
In this example, the suction efficiency of dirty air can be further improved due to the fact that the intake port portion 4c is at a high part and that a strong airflow can be formed by the purified air.
[0041]
(3). Fourth to seventh embodiments (FIGS. 10 to 13)
10 to 13 show an embodiment in which the circulation fumarole 17 of the embodiment is provided at the edge of the top plate 1.
[0042]
Among these, in the fourth embodiment shown in FIG. 10, a duct-like air blowing member 17 is disposed on the outer peripheral edge of the top plate 1. circulating gas nozzle 16 for ejecting is formed. A duct 18 communicating with the flow-through passage is connected to the squirting member 17.
[0043]
Inside the squirting member 17, a guide blade 19 that guides the air direction is provided so that the purified air follows the upper surface of the top plate 1 as much as possible. Providing the circulation jet port 16 at the edge of the top plate 1 in this way has an advantage that it is possible to efficiently suck in smoke that has accumulated near the top surface of the top plate 1.
[0044]
In the fifth embodiment shown in FIG. 11, an inclined surface 1 a that is gently inclined is formed at the edge of the top plate 1, while the fusible member 17 is formed so as to surround the inclined surface. In this example, since the inclined surface 1a of the top plate 1 fulfills a guide function for guiding the air direction of the purified air, the structure can be simplified.
[0045]
When the fusible member 17 is provided at the edge of the top plate 1, it may be arranged on the straight portion of the top plate 1 as shown in FIG. 12 as the sixth embodiment, or as shown in the seventh embodiment in FIG. Alternatively, it may be arranged at the corner of the top plate 1. It is also possible to arrange so as to surround the entire circumference of the top plate 1.
[0046]
The length of the fusible member 17 (the length in the horizontal direction) may be set in consideration of various circumstances such as the required suction ability and design. When the top plate 1 is circular or elliptical, it may be formed in an arc shape in plan view corresponding to the planar shape of the outer surface of the top plate.
[0047]
When the purified air is ejected from the edge of the top plate 1, if a large amount of air is required, the entire amount or most of the purified air can be used.
[Brief description of the drawings]
FIG. 1 is a perspective view of an air purification device according to a first embodiment.
2 is a cross-sectional view taken along the line II-II of FIG.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is a perspective view of a main part.
FIG. 5A is a front view of a main part viewed from the diagonal direction of the top board, and FIG. 5B is a view taken along line BB of FIG.
FIG. 6 is a perspective view showing a second embodiment.
FIG. 7 is a plan view of the air collecting head.
8A is a cross-sectional view taken along line AA in FIG. 7, and FIG. 8B is a cross-sectional view taken along line BB in FIG.
FIG. 9 is a plan sectional view showing a third embodiment.
FIG. 10 is a plan sectional view showing a fourth embodiment.
FIG. 11 is a plan sectional view showing a fifth embodiment.
FIG. 12 is a plan sectional view showing a sixth embodiment.
FIG. 13 is a plan sectional view showing a seventh embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Top plate 2 Main-body part 3 Suction port 5 Body 8 Filter unit 10 Fan 12 Outlet 13 Vertical partition 14 Horizontal duct 15 Reflux passage 16 Circulation fumarole

Claims (2)

A top plate that can surround a person, comprises a main body portion disposed below the top plate,
While the top plate has a dirty air inlet opening,
Wherein the main body portion, and a cleaning mechanism having a filter and a fan for purifying contaminated air, is discharged from the purifying mechanism is provided with a outlet for releasing the air to the outside, the filter the The fan is arranged below the suction port and the fan is arranged below the filter.For this reason, the air purification device with a top plate is configured such that air flows downward in the purification mechanism,
A recirculation passage that recirculates a part of the air discharged from the purifying mechanism portion to a portion outside the purifying mechanism portion in a plan view of the main body portion, along the lower surface of the top plate after the recirculating air flows upward In addition, a circulation air blowing port is provided in the vicinity of the top plate or in the top plate itself to return the air returned to the return passage to the vicinity of the suction port.
Air purifier with a top plate. Above the suction port, a quadrilateral air collecting head capable of sucking dirty air at a position higher than the top plate is disposed, and the circulation air blowing port is provided at each corner portion of the air collecting head. Have arranged ,
The air purifier with a top plate according to claim 1.

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