JP2002143626A - Floor-installing air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor-installing air filter which is compact, capable of simply performing the increase and decrease control of a filtering area and also in which the contamination of the filter is inconspicuous from the outside. SOLUTION: The cleaner is provided with a fan case 4 incorporating an axial fan 16 and also forming a suction port 11 on the back surface and an exhaust port 13 on the upper surface at a fixed height from an installation surface. One or more cylindrical filter structures 5 whose walls are formed by a filter material 23 are connected in a laminated shape on the upper surface of the fan case 4, and also the upper surface of the uppermost end filter structure 5 is closed by a cap 6. The air sucked from the back surface suction port 11 is discharged to the outside from the inside of each filter structure 5. The filter structure 5 is formed cylindrically, for example.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an installation type air cleaner which is used by being installed on a floor or the like.

[0002]

2. Description of the Related Art As an installation type air purifier, FIG.
The thin box type as shown in FIG.
1, a discharge port 103 is formed on the upper surface, and a centrifugal fan 107 such as a sirocco fan and a motor 105 are arranged inside a main body fan case 104.
01, a flat sheet-shaped filter 106 is arranged. By operating the fan 107, external air is sucked in from the inlet 101 on the front side through the filter 106, and purified air is discharged from the outlet 103 on the upper side.

[0003] In such a thin-box installation type air cleaner, since the filter 106 in the form of a flat sheet is arranged, in order to obtain a predetermined filtration area, the size of the filter 106 is increased to increase the filter area. Therefore, there is a problem that the main body fan case 104 becomes large.

On the other hand, Japanese Patent Application Laid-Open No. Hei 9 (1999) discloses a stationary air purifier that is small but can secure a large filtration area.
As described in US Pat. No. -848, a tubular-installed air cleaner using a cylindrical filter with a corrugated cross section has been developed.

[0005] The configuration will be briefly described with reference to FIG.
A two-stage cylindrical main body case 110 is provided, and a cylindrical filter 111 made of a filter material having a corrugated cross section is housed in a lower filter housing case portion 112. .
A fan 115 and a motor 116 are arranged in the upper fan case portion 113, and a discharge port 117 made of a louver is provided on the upper wall of the fan case portion 113. The sound absorbing material 120 is arranged all around the inner peripheral surface of the fan case portion 113, and an electrical case 122 is provided below the filter storage case portion 112. As a result, the filtration area of the filter is large despite its small size, and
We offer a low-noise air purifier.

[0006] The air sucked from the suction port 114 of the peripheral wall enters the filter housing 112 through the cylindrical filter 111 having a corrugated cross section, and is sent into the upper fan case 113 by the axial fan 115. It is discharged from the outlet 117 on the upper wall.

[0007]

The above-mentioned cylindrical installation type air cleaner also has the following problems.

(1) Since one cylindrical filter 111 is arranged in the filter housing case 112 having a fixed volume, it is difficult to increase or decrease the filtration area.

(2) In addition to the fan 115, the motor 116 and the fan case 113, the filter housing case 11
2. Since the electrical case 122 and the louvers on the upper wall are required, the number of parts increases, and a large amount of money and days are required for manufacturing a mold for molding them, resulting in an increase in manufacturing cost.

(3) Since the filter housing case section 112 and the electrical case 122 are provided, a correspondingly large installation space is required.

(4) Since only a single filter 111 can be disposed in the filter housing 112, even if the filter 111 is partially contaminated, the entire large filter must be replaced at the time of replacement, which is uneconomical. It is.

(5) Since the structure is such that outside contaminated air is passed from the outer peripheral side to the inner peripheral side of the cylindrical filter 111, dirt in the air is removed from the outer peripheral surface of the cylindrical filter 111 and the filter storage case 112. It adheres to the peripheral wall, and dirt is conspicuous from the outside, making it unsightly and troublesome to clean.

[0013]

According to the first aspect of the present invention, a fan case having a built-in axial fan, a suction port on a lower surface, and a case outlet on an upper surface is provided at a predetermined height from an installation surface. On the upper surface of the fan case, a cylindrical filter structure having a peripheral wall formed of a filter material
One or two or more layers are connected in a stacked manner, and the upper surface of the uppermost filter structure is closed with a lid so that air sucked from the lower surface suction port of the fan case is discharged from the inside of each filter structure to the outside. A cylindrical air purifier characterized in that:

According to a second aspect of the present invention, in the stationary air purifier of the first aspect, the filter structure is cylindrical.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view of an installation type air purifier to which the present invention is applied.
A disk-shaped installation base 2 and a cylindrical fan case 4 supported above the base 2 via a plurality of support legs 3
And a plurality of cylindrical filter components 5 arranged in a stack on the upper surface of the fan case 4, a disc-shaped lid 6 for closing the upper surface of the uppermost cylindrical filter component 5, and the like. I have.

A conical guide 10 is formed on the base 2 to guide air from the surroundings toward the lower surface suction port 11 of the fan case 4.

The lower surface of the fan case 4 is opened as the suction port 11 as described above, and the upper surface is opened as the case outlet 13 as shown in FIG. 4, and inside the fan case 4 via a spider-shaped support rod 14. A motor 15 is supported, and an axial fan 16 is fixed to an output shaft projecting downward from the motor 15. On the upper surface of the fan case 4,
Four filter support rods 20 are erected at equal intervals in the circumferential direction so as to protrude upward, and each of the support rods 20 is arranged so as to be in contact with the inner peripheral surface of the filter structure 5. 5 is performed in the horizontal direction.

In FIG. 3, each of the filter components 5 is formed independently, and upper and lower annular metal plates 24 and 25 are provided on both upper and lower surfaces of a cylindrical filter material 23.
Is fixed. The filter material 23 is formed of paper or a nonwoven fabric, and has a corrugated cross section having folds all around, thereby securing a large filtration area. A plurality of metal reinforcing members 27 are provided between the upper and lower plates 24 and 25 at intervals in the circumferential direction to reinforce the connection between the two plates 24 and 25.

FIG. 5 is an exploded front view showing the support rod 20.
Is detachably screwed to a male screw 30 fixed upwardly on the upper surface of the fan case 4, and a female screw hole 31 for fixing the lid is formed at the upper end. The support bar 2 is provided on the lid 6.
A screw insertion hole 33 is formed at a position corresponding to 0,
Insert the tightening screws 35 into the insertion holes 33 of the lid 6 respectively,
By screwing on the upper end female thread portion 31 of the support rod 20,
The filter assembly 5 and the lid 6 are placed on the fan case 4 from above.
To be fixed.

A scaly protection cover 19 is attached to the lower surface suction port 11 of the fan case 4.

[0021]

[Assembly and Disassembly] In FIG. 5, the lower ends of the support rods 20 are screwed to the male screws 30 of the fan case 4 so that the four support rods 20 stand upright. The cylindrical filter components 5 are sequentially fitted on the outer side of, and are stacked in a stacked manner.

The lid 6 is placed on the upper surface of the filter structure 5 at the upper end, and four fastening screws 35 are attached to the support rod 20 as shown in FIG.
By screwing onto the upper end of the filter case, the respective filter components 5 and the lid 6 are integrally fixed to the fan case 4 as shown in FIG.

When the filter is disassembled for replacement or cleaning, the fastening screw 35 at the upper end is removed, and the lid 6 and each filter assembly 5 are sequentially removed from the upper side.

At the time of replacement, it is not necessary to always replace the entire filter assembly 5, but only the filter whose dirt is close to the limit can be replaced, and the filter with less dirt can be used again.

The upper, middle and lower filter components 5
By replacing the position of each filter constituent 5
It is also possible to make the dirt uniform and adjust the replacement time to be substantially the same.

[0026]

When the axial fan 16 is operated by the motor 15, the outside dirty air is sucked into the suction port 11 on the lower surface of the fan case.
Is sucked into the fan case 4 and sent to the inside of the filter assembly 5 above by the fan 16. After passing through the surrounding filter material 23 from the inside to the outside and being purified, it is discharged in all directions.

Since the filter assembly 5 is configured to pass dirty air from the inside to the outside, the stain of the air adheres to the inner peripheral surface of the filter material 5 and cannot be seen from the outside.

When changing the filtration area, the support rod 20
Is removed from the external thread 30 of the fan case 4 and replaced with a support rod having a different length, or an extension support rod 40 as shown by an imaginary line in FIG. The length of the extension support rod 40 is set to a dimension that is an integral multiple of the height of the filter assembly 5, and the number of filter assemblies 5 to be mounted can be increased. FIG.
Then, the length of the extension support rod 40 is the same as the height of the filter assembly 5, and a total of four filter assemblies 5 are provided.
Can be attached.

[0029]

[Other Embodiments of the Invention] (1) A structure in which the filter members 5 are sequentially connected to each other without providing the support rod 20 as shown in FIG. For example, as shown in FIG. 6, a downward flange 25 a is formed on the lower plate 25 of the filter assembly 5, the flange 25 a is fitted to the outer peripheral end of the upper plate 24 of the lower filter assembly 5, and a clip 45 is externally provided. Fix with etc. Lowermost filter structure 5
The lower plate 25 is fitted into the upper end flange 4 a of the fan case 4 and fixed with the clip 45. As described above, in the configuration in which the filter components 5 are sequentially connected to each other, it is not necessary to change or add the support rods 20 as shown in FIG. 5, and it is easy to increase or decrease the filter components 5.

(2) In the illustrated embodiment, the filter structure 5 is formed in a cylindrical shape, but may be formed in various polygonal cylindrical shapes such as a square tube type, a pentagonal tube type, and a hexagonal tube type. It is possible.

[0031]

As described above, according to the present invention, (1) a filter structure using a filter material directly as an outer peripheral wall is stacked on a fan case containing a fan and a motor. The filter storage case surrounding the outer periphery of the filter becomes unnecessary,
By making the filter structure cylindrical, the entire purifier can be made compact while increasing the filtration area.

(2) Since the cylindrical filter components are directly stacked on the fan case without using the filter case or the like, the number of filter components to be mounted can be easily increased or decreased. A large filtration area as required can be easily secured. Moreover, since the filters are stacked upward, even if the number of filter components is increased, the horizontal space does not change and the installation space does not increase.

(3) Since a filter housing case, an electrical case, a louver, and the like are not required, the number of parts can be reduced, and a die for molding them is not required, thereby reducing the manufacturing cost.

(4) The filter area can be increased or reduced by increasing or decreasing the number of filter components. Therefore, when replacing the filter, it is sufficient to replace only the filter component with heavy contamination with a new one. It is economical because it can be efficiently used for the life of each filter component individually.

(5) Since air is passed from the inner circumference to the outer circumference of the cylindrical filter material and clean air is discharged in all directions, air stains are deposited on the inner peripheral surface of the cylindrical filter material. Adhered, dirt from the outside is not noticeable,
Moreover, clean air can be supplied in all directions.

[Brief description of the drawings]

FIG. 1 is a front view of a stationary air purifier to which the present invention is applied.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view of a single cylindrical filter structure.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is an exploded front view of the stationary air cleaner of FIG. 1;

FIG. 6 is a partial longitudinal sectional view showing a modified example of the coupling structure of the filter structure.

FIG. 7 is a longitudinal sectional view of a conventional thin-box installation type air cleaner.

FIG. 8 is a longitudinal sectional view of a conventional cylindrical installation type air cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Purifier main body 2 Base 4 Fan case 5 Filter structure 6 Lid 11 Suction port 13 Case outlet 15 Motor 16 Axial fan 20 Support rod 23 Filter material 24 Upper plate 25 Lower plate

Claims (2)

[Claims] 1. A fan case having a built-in axial flow fan, a suction port on a lower surface, and a case outlet on an upper surface is provided at a fixed height from an installation surface, and a peripheral wall is formed of a filter material on an upper surface of the fan case. One or two or more of the formed cylindrical filter components are connected in a stack, and the upper surface of the uppermost filter component is closed by a lid, and the air sucked from the lower suction port of the fan case is removed from each filter. An installation type air purifier characterized by discharging from the inside of a structure to the outside. 2. The installation type air purifier according to claim 1, wherein the filter structure is cylindrical.