JP2000042326A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the falling of dust around a cleaner when maintained and to shorten the working time around the cleaner. SOLUTION: In the air cleaner, a prefilter 21 and a dust collection unit 22 are held on the rear of a grille casing 11 forming a suction grille 11a to constitute a grille unit 3. The grill unit 3 and the main body 2 of the air cleaner are rotatably and detachably connected through a connecting mechanism 4. The whole grille unit 3 is attached and detached, the prefiler 21 is detached away from the main body 2, and the falling of dust around the main body 2 is prevented. The section of the prefilter 21 is corrugated. The period of time until the maintenance is needed is equalized with that for an electrostatic filter 26 to decrease the frequency of attaching and detaching the grill unit 3. Consequently, the working time around the air cleaner main body is shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning device for removing dust in the air.

[0002]

2. Description of the Related Art An air cleaning apparatus has, for example, a prefilter and a dust collecting unit along the flow of air. The pre-filter captures relatively large dust in the air. In the dust collection unit, the dust in the air is ionized by the ionization unit, and the ionized dust is electrically captured by an electrostatic filter. Electrostatic filters and pre-filters are usually maintained on a regular basis. The maintenance period is 2 to 2 for the pre-filter.
Four weeks and six to eight months for the dust collection units, each differing. For this reason, the pre-filter and the dust collection unit can be separately attached to and detached from the casing of the air cleaning device.

[0003] A suction grill is provided in a casing of the air purifying device, and a pre-filter is disposed in the interior of the grill. Further, a dust collection unit is further provided in the back. To remove the pre-filter, open the suction grill, open the interior of the air purifier, and remove the pre-filter contained inside from the casing. Further, in order to remove the dust collection unit, after removing the pre-filter, the dust collection unit is detached from the casing separately from the pre-filter.

[0004]

However, in order to detach and attach both the dust collecting unit and the pre-filter separately,
It takes time and effort. Further, when removing the pre-filter, dust may fall around the air cleaning device. In particular, it is not preferable for an air purifier installed in a clean place such as a food factory.

[0005] For this reason, the user may feel uncomfortable during the maintenance, and there is also a demand for reducing the frequency of maintenance as an air purifying device.
Therefore, a first object of the present invention is to solve the above-mentioned technical problems, and to provide an air purifying apparatus capable of preventing dust from dropping around the apparatus during maintenance and shortening the working time around the apparatus. It is to be. A second object of the present invention is to provide an air purifying device that can reduce the frequency of maintenance.

[0006]

In order to achieve this object, an air purifying apparatus according to the first aspect of the present invention is an air purifying apparatus for trapping dust in an air flow flowing from a suction grill by a pre-filter and dust collecting means. In the cleaning device, a grill casing that forms the suction grille and detachably holds the pre-filter and the dust collecting unit, a grill unit including the pre-filter and the dust collecting unit, and the grill unit includes an air cleaning unit. It is characterized by being detachable from the apparatus body.

According to this configuration, after the grill unit is detached from the apparatus main body, it may be carried away from the apparatus main body, the pre-filter and the dust collecting means may be removed from the grill unit, and cleaning and replacement may be performed. in this way,
Since it can be handled as a grill unit, it does not take much time to attach and detach, and the work time required around the apparatus main body can be shortened.

[0008] Since the pre-filter can be removed away from the apparatus main body, it is possible to prevent dust from falling from the pre-filter around the apparatus main body. Here, the grill casing may directly hold the pre-filter or the dust collecting means, or may hold it through a separate member. Further, as the dust collecting means, a filter for filtering and physically capturing dust in the air stream, an electrostatic filter for electrostatically adsorbing the dust in the ionized air stream, and a filter for collecting the ionized dust extremely. An example of the electric precipitator that urges one of the plates by the electric field between the plates and electrically captures the plate is exemplified.

According to a second aspect of the present invention, in the air purifying apparatus according to the first aspect, a period in which maintenance is required for the pre-filter and the dust collecting means is equal to each other. According to this configuration, in addition to the operation of the invention described in claim 1, the grill unit only needs to be attached and detached once for maintenance of both the pre-filter and the dust collecting means every period described above. Frequency can be reduced.

According to a third aspect of the present invention, in the air purifying apparatus according to the first or second aspect, the prefilter is formed in a sheet shape having a corrugated cross section. According to this configuration, claim 1 or claim 2
In addition to the effects of the invention described in (1), the sheet-shaped pre-filter having a corrugated cross section can have a larger surface area than a flat pre-filter, so that the period until maintenance is required can be lengthened.

According to a fourth aspect of the present invention, there is provided the air purifying apparatus according to any one of the first to third aspects,
The grill casing further includes a connection mechanism for rotatably connecting one end edge of the grill casing to the air cleaning device main body, and the connection mechanism is provided on one of the grill casing and the air cleaning device main body and on the other. And a shaft fitted to the cylinder so as to be relatively rotatable, wherein the shaft and the cylinder are detachable from each other by being relatively displaced in the axial direction.

According to this configuration, in addition to the function of the invention according to any one of claims 1 to 3, the following function is provided.
That is, the grill unit can be detached by rotating the grill unit with respect to the apparatus main body or displacing the grill unit relatively in the axial direction while guiding the shaft and the cylinder to each other. As described above, by inserting and removing the shaft and the cylinder that support the rotation of the grill unit, the attachment and detachment of the grill unit can be guided, so that the grill unit can be easily attached and detached.

According to a fifth aspect of the present invention, there is provided an air purifying apparatus according to the fourth aspect, wherein the shaft extends vertically. According to this configuration, in addition to the effect of the invention described in claim 4, the grill unit can be displaced in the up-down direction and attached to the air cleaning device main body. At this time, since the own weight of the grill unit can be used, the mounting can be reliably positioned.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air purifying apparatus according to one embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of an air cleaning device according to an embodiment of the present invention. FIG.
FIG. 2 is a side sectional view of a schematic configuration of the air cleaning device of FIG. 1. As shown in FIG. 1, the air cleaning device 1 has a rectangular parallelepiped shape that is long in the vertical direction and thin in the depth direction. Most of the outer shape is defined by the main casing 10, and a lower portion on the front surface of the outer shape is defined by the grill casing 11. The air purifying device 1 has an air purifying device main body 2 including a main body casing 10 and a grill unit 3 provided on a front surface of the air purifying device main body 2 and including a grill casing 11.

The grill unit 3 includes a grill casing 11 described above, a pre-filter 21 for removing relatively large dirt and dust, and dust particles in a flow (ventilation flow) along an air flow path. Dust collection unit 22 which is ionized and electrostatically attracted by an electrostatic filter 26 as a dust collection means
And The grill casing 11 is formed with a suction grill 11a. A pre-filter 21 is held along the back surface 11b of the grill casing 11, and a dust collection unit 22 is separately and detachably held behind the pre-filter 21. One end 11c on the left side of the grill casing 11 is detachably and rotatably connected to the one end 10c on the left side of the air cleaning device main body 2 via a connection mechanism 4.

A concave portion 10a is formed on the front surface of the main body 2 of the air cleaning device. Grill unit 3 has recess 10
Also functions as a door that opens and closes a. When the grill unit 3 is rotated and opened with respect to the air cleaning device main body 2, the recess 10
a is opened and functions as a maintenance opening as described later. When the grill unit 3 is mounted at a predetermined mounting position, the pre-filter 21 and the dust collection unit 22 are housed in the recess 10a, and the front surface of the grill casing 11 and the front surface of the main casing 10 are substantially flush. , And an air passage is formed inside the air cleaning device 1. The air passage extends from an inlet 16 in the grill casing 11 to an outlet 17 formed on the upper surface of the main casing 10.

As shown in FIG. 2, the above-mentioned pre-filter 21, the above-mentioned dust collection unit 22, and the irradiation of light containing ultraviolet rays are applied to the inside of the air purifier from the upstream side along the air flow path. A photocatalyst carrier 27 carrying a photocatalyst for purifying pollutants in the air flowing through the air passage receiving the light, a light source 28 for irradiating the photocatalyst carrier 27 with light, a sirocco fan for generating a ventilation flow in a predetermined direction, etc. Fan 31 is provided. The blower fan 31, the light source 28, and the photocatalyst carrier 27 are attached to the air cleaning device main body 2.

When the blower fan 31 is driven to rotate by the fan motor 32, the air flows through the above-described air passage. That is, the dust flows in backward from the suction grill 11a, and relatively large dust is captured by the pre-filter 21, fine dust is charged by the ionization unit 23 and captured by the electrostatic filter 26, and contaminants such as odor components are contained. Is purified by the photocatalyst carrier 27. Thereafter, the air flows upward, is sucked into the blower fan 31, and is blown out from the outlet 17 (FIG. 2).
Arrow F).

In the present invention, as described above, the grill unit 3 including the pre-filter 21 and the dust collection unit 22 is provided detachably with respect to the main body 2 of the air cleaning device. Thereby, at the time of maintenance of the pre-filter 21 and the dust collection unit 22, the work around the air cleaning device 1 can be completed in a short time. The details will be described below. As shown in FIG. 1, the grill unit 3 and the air purifier main body 2 are connected at their left edges 10c, 11c by the above-mentioned connecting mechanism 4, and are connected at their right edges 10d, 11d to a male screw 51 and a female screw. 52.
The coupling mechanism 4 and the fastening mechanism are provided at two places vertically.

The coupling mechanism 4 includes a cylinder 41 and a shaft 42 which is fitted to the cylinder 41 so as to be relatively rotatable. Shaft 42
Is fixed to the air purification device main body 2 and extends in the up-down direction, and the cylinder 41 is fixed to the grill casing 11.
The coupling mechanism 4 forms a hinge with the cylinder 41 and the shaft 42,
One end 11c of the grill casing 11 is rotatably connected to one end 10c of the air cleaning device main body 2. Also,
The upper end of the shaft 42 is opened, and the shaft 42 and the cylinder 41 can be detached from each other by being relatively displaced in the axial direction. In addition, a step having a larger diameter than the shaft 42 is provided at the lower end of the shaft 42.

By using the connecting mechanism 4, the grill unit 3 can be rotated with respect to the apparatus main body 2 or relatively displaced in the axial direction while the shaft 42 and the cylinder 41 are guided to each other, and can be detached. . That is, by rotating the grill casing 11 about the shaft 42 with respect to the air cleaning device main body 2 and then moving the grill casing 11 upward, the grill unit 3
Can be removed from the air purifying apparatus main body 2.
Also, at the time of mounting, the cylinder 41 is fitted from the upper end of the shaft 42, and the lower end surface of the cylinder 41 is brought into contact with the step, thereby forming
2 and the cylinder 41 can be positioned horizontally and vertically. By rotating the grill unit 3 in a state where the shaft 42 and the cylinder 41 are positioned as described above, it is possible to easily and smoothly guide the air purifying apparatus main body 2 to a predetermined mounting position.

The connecting mechanism 4 is not limited to the above-described structure. For example, the cylinder 41 is fixed to the air cleaning device,
2 may be fixed to the grill casing 11. FIG.
Is a cross-sectional plan view of the grill unit 3, showing the left half. The grill casing 11 is formed in a rectangular plate shape, and a lattice-shaped suction grill 11a is formed in the center thereof. In the suction grill 11a, the gap between the lattices becomes the suction port 16. The grill casing 11 has a substantially left-right contrast.

On the back surface 11b of the grill casing 11,
As shown in FIGS. 1 and 3, a pair of first holding members 12 are provided.
, A pair of second holding members 13, and a first support member 14
And the second support member 15 are provided so as to surround the suction grill 11a.
1 and the dust collection unit 22 are held directly behind the suction grill 11a.

The first holding member 12 and the second holding member 13 are vertically extending channel members, and are provided on the left and right sides of the suction grill 11a. Between the first holding member 12 and the back surface 11b of the grill casing 11,
A first groove is defined, and the first grooves face each other, and engaging tongue pieces 21a on the left and right sides of the pre-filter 21 are fitted into the first grooves. Also, the first holding member 1
2 and a front surface of the second holding member 13, a second groove is defined, and the second grooves face each other,
Engagement projections 20a provided on the left and right of the dust collection unit 22 are fitted in the second grooves. In addition, the first support member 14 and the second support member 15 are arranged below the suction grill 11a. The first support member 14 supports the lower end of the frame of the pre-filter 21, and the second support member 1
5 supports the lower end of the dust collection unit 22.

The pre-filter 21 is provided for the grill casing 1
1, it is arranged between the dust collection unit 22 and the grill casing 11. Prefilter 2
Reference numeral 1 denotes a structure in which a fibrous member formed in a sheet shape having a corrugated cross section is held in a frame. The above-mentioned engaging tongue pieces 21a are formed on the left and right side surfaces of this frame. As described above, since the pre-filter 21 is formed in a cross-sectional waveform, the period during which maintenance is required can be extended.

The dust collection unit 22 is provided with the above-described ionization unit 2.
3 and an electrostatic filter 26. The electrostatic filter 26 is formed in a sheet shape, and is attached along the rear surface of the casing 20 of the ionization unit 23. The ionization unit 23 includes a plurality of ionization lines 24 extending in a direction perpendicular to the direction of the air flow and being parallel to each other, and a pair of opposed electrode plates 25 disposed to face each other with the ionization lines 24 interposed therebetween. And a frame 20 for positioning and fixing the opposing electrode plate 25 and the ionization wire 24 to each other. The ionization unit 23 charges the dust particles in the ventilation flow by an ion shower generated by corona discharge. The opposite electrode plate 25 is grounded.

The frame body 20 is formed in a frame shape. Frame 2
The ionization line 24 and the opposing electrode plate 25 are positioned and attached to the front side of the zero, thereby forming an ionization part 23. In addition, the above-described engaging projections 20 a are formed on the left and right side surfaces of the frame 20. Two hook-like stabs 20b are provided on the upper part of the rear surface of the frame body 20, and lock the two upper ends of the electrostatic filter 26. Also,
A holding member 20 c is provided at a lower end of the rear surface of the frame 20, and a lower end of the electrostatic filter 26 is held between the holding member 20 c and the rear surface of the frame 20.

The electrostatic filter 26 has a basis weight of 50 g, for example.
/ M ² of a polyolefin-based chargeable nonwoven fabric. The electrostatic filter 26 electrostatically attracts the dust particles charged by the ionization unit 23. Next, maintenance of the air cleaning device 1 will be described. First, the grill unit 3
Is removed from the air purifier main body 2. That is, as shown in FIG. 1, the male screw 51 is removed from the female screw 52, the grill unit 3 is rotated by the connecting mechanism 4, and the dust collection unit 22 and the like are pulled out from the concave portion 10a. When the grill unit 3 is moved upward in this state, the shaft 4
The fitting between the cylinder 2 and the cylinder 41 is released, and the grill unit 3 is separated from the air purifier main body 2.

After the grill unit 3 is detached from the apparatus main body 2, it is carried as it is away from the apparatus main body 2. Then, the pre-filter 21 and the electrostatic filter 26 are removed from the grill unit 3, and maintenance such as cleaning and replacement is performed. For example, the dust collection unit 22 is slid and removed from the grill casing 11, and the pre-filter 21 is similarly removed. The pre-filter 21 is cleaned of dust adhering thereto or washed with water. The electrostatic filter 26 is replaced with a new one. Suction grill 11a
Wipe and clean. After such maintenance, the pre-filter 21 and the dust collection unit 22 are attached to the grill casing 11, and the grill unit 3 is attached to the air cleaning device main body 2.

The mounting of the grill unit 3 is performed as follows. That is, with the grill casing 11 being substantially perpendicular to the front surface of the air cleaning device main body 2, the connecting mechanism 4
The tube 41 is fitted into the shaft 42 from above. Next, the grill unit 3 is rotated to close the concave portion 10a, and the male screw 51 is screwed into the female screw 52 to be fixed. At this time, the connecting mechanism 4
Can guide the grill unit 3 to the apparatus main body 2, so that the grill unit 3 can be smoothly and promptly mounted at an appropriate position without the grill unit 3 colliding with the apparatus main body 2. Also, since the shaft 42 and the cylinder 41 need only be fitted at one end 11c of the grill casing 11, they can be easily attached and detached without prying.

In the present invention, in particular, the periods until maintenance of the pre-filter 21 and the electrostatic filter 26 are required are made equal to each other. That is, the period T1 for the pre-filter 21 is increased in the present embodiment from the one having a relatively short life in the related art, and is equal to the period T2 for the electrostatic filter 26 having a relatively long life in the related art. Therefore, in the case of the present embodiment where T1 = T2 shown in FIG. 4A, the period T2 with respect to the electrostatic filter 26 is required to perform maintenance (denoted by M in FIG. 4).
In each case, it is only necessary to remove the grill unit 3, whereas in the case of the comparative example of T1 <T2 shown in FIG.
The grill unit 3 will be attached and detached each time maintenance is performed.
Can be reduced in frequency. The grill unit 3 includes a pre-filter 21 and an electrostatic filter 26.
Since both are included, it is convenient to maintain both.

The photocatalyst carrier 27 and the light source 28 are usually maintained for a period longer than the period for the electrostatic filter 26 described above. At the time of maintenance, the grill unit 3 is rotated to open the concave portion 10a, the photocatalyst carrier 27 is removed, and the light source 28 can be maintained in this state. As described above, according to the present embodiment, grill unit 3 including pre-filter 21 and dust collection unit 22 is detachable from air cleaning device main body 2. As a result, the grill unit 3 can be handled as a single unit, so that it is not necessary to attach and detach the grill unit 3 and the device body 2
The work time required around the area can be shortened. Further, since the pre-filter 21 and the dust collection unit 22 can be detached from the grill unit 3 at a position away from the apparatus main body 2, dust can be prevented from dropping from the pre-filter 21 around the apparatus main body 2. This is because dust falls when the pre-filter 21 is removed from the member that directly holds the pre-filter 21.

Further, the period during which maintenance is required for the pre-filter 21 and the dust collection unit 22 is made equal to each other.
Since it is only necessary to attach and detach the grill unit 3 once to maintain both the dust collection unit 1 and the dust collection unit 22, the frequency of attaching and detaching the grill unit 3 can be reduced. Further, since the pre-filter 21 is formed in a sheet shape having a corrugated cross section, the surface area can be increased as compared with a flat conventional pre-filter, so that a period until maintenance is required can be made longer than usual. Therefore, the pre-filter 21
Can be made equal to the period until maintenance is required for the electrostatic filter 26 of the electrostatic adsorption type, which usually has a long life.

Further, since the attachment and detachment of the grill unit 3 can be guided by inserting and removing the shaft 42 and the cylinder 41 that support the rotation of the grill unit 3, the grill unit 3 can be easily attached and detached. Moreover, the shaft 42 and the cylinder 41 have a simple structure. In particular, since the shaft 42 of the connecting mechanism 4 extends in the vertical direction, the grill unit 3 is connected to the air purifying device main body 2.
Since the weight of the grill unit 3 can be used when mounting the device, the mounting position can be reliably determined.

In the grill unit 3, the pre-filter 21 is located between the grill casing 11 and the dust collecting unit 22 and is protected, so that it is possible to prevent the worker from touching the pre-filter 21 and to remove dust from the pre-filter 21. Falling can be prevented more reliably. In particular, relatively large dust adheres to the pre-filter 21,
It is preferable because dust easily falls when touched.

The grill casing 11 also serves as an opening / closing door for a maintenance opening of the air purifying device main body 2, so that the structure can be simplified. In the above-described embodiment, the grill casing 11 directly holds the pre-filter 21 and connects the electrostatic filter 26 to the frame 2 of the ionization unit 23.
Holding through 0. As described above, the grill casing 11 may directly hold the pre-filter 21 and the electrostatic filter 26, or may hold the pre-filter 21 and the electrostatic filter 26 indirectly via another member.

In addition, instead of the electrostatic filter 26, the dust collecting unit 22 uses an electric dust collecting unit for urging the ionized dust to one of the plates by an electric field between the plates to electrically capture the dust. Alternatively, a filtration type filter that captures dust in the airflow by a filtering action may be used, and any dust collection unit that captures dust may be used. Further, as a configuration of the air cleaning device 1, for example, a configuration in which the photocatalyst carrier 27 and the light source 28 are omitted can be considered. Further, the air conditioner may be incorporated in an air conditioner such as an air conditioner. As an air purifier,
Any device may be used as long as dust in the air flow flowing from the suction grill 11a is captured by the pre-filter 21 and the dust collecting means.

In addition, various design changes can be made without changing the gist of the present invention.

[0039]

According to the first aspect of the present invention, since the grill unit can be handled collectively, it can be attached and detached in a short time without labor. In addition, since the pre-filter and the dust collecting means can be detached from the apparatus main body, dust does not fall around the apparatus main body. According to the invention of claim 2, in addition to the effect of the invention of claim 1, the period until maintenance of the pre-filter and the dust collecting means is equal to each other, so that the frequency of attachment and detachment of the grill unit is reduced. it can.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, in addition to the effects of the pre-filter,
The period until maintenance is required can be made longer than usual, and can be equal to the period until maintenance on the dust collecting means is required. According to the fourth aspect of the present invention, in addition to the effects of the first aspect of the present invention, the shaft supporting the rotation of the grill unit and the cylinder are inserted into and removed from each other, so that the grill unit is provided. Can be guided, so that the grill unit can be easily attached and detached.

According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, the shaft of the connecting mechanism extends in the up-down direction. Positioning can be ensured.

[Brief description of the drawings]

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

FIG. 2 is a side sectional view of a schematic configuration of the air cleaning device of FIG.

FIG. 3 is a sectional plan view of a grill unit of the air cleaning device of FIG. 1;

4A and 4B are explanatory diagrams of a period during which maintenance of the grill unit of FIG. 1 is required, and FIG.
Shows a comparative example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier 2 Air purifier main body 3 Grill unit 4 Connecting mechanism 10 Main body casing 10c One end edge 11 Grill casing 11a Suction grill 11c One end edge 21 Pre-filter 26 Electrostatic filter (dust collection means) 41 Tube 42 Shaft T1 For pre-filter Period required maintenance T2 Period required maintenance for electrostatic filter

Claims (5)

[Claims] An air purifier (1) for capturing dust in an air flow flowing from a suction grill (11a) by a pre-filter (21) and dust collecting means (26). Forming and pre-filter (21)
A grill casing (11) for detachably holding the dust collecting means (26), the pre-filter (21), and a dust collecting means (2
An air purifying apparatus, comprising: a grill unit (3) including a grill unit (6), wherein the grill unit (3) is detachably attached to the air purifying apparatus main body (2). 2. The air purifying apparatus (1) according to claim 1, wherein the periods (T1, T2) during which maintenance is required for the pre-filter (21) and the dust collecting means (26) are equal to each other. And air purifier. 3. An air purifying apparatus according to claim 1, wherein
In (1), the prefilter (21) is formed in a sheet shape with a corrugated cross section. 4. An air purifying apparatus (1) according to claim 1, wherein one end (11c) of said grill casing (11) is rotatably connected to an air purifying apparatus main body (2). The coupling mechanism (4) further includes a cylinder (41) provided on one of the grill casing (11) and the air cleaning device body (2) (11).
And a shaft (42) provided on the other (2) and relatively rotatably fitted to the tube (41), and the shaft (42) and the tube (41) are
An air purifier characterized by being detachable from each other by relative displacement in the axial direction. 5. The air purifying apparatus according to claim 4, wherein said shaft extends in a vertical direction.