JP3360582B2 - Dust collection element for air purifier - Google Patents

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. In particular, it relates to an electrostatic precipitating type including an ionizing section and a precipitating section.

[0002]

2. Description of the Related Art Conventionally, in an electrostatic precipitating air purifying apparatus, an ionizing section including an ionizing line to which a high voltage for charging dust particles is applied, and a dust collecting section for capturing the charged dust particles. And an electrostatic filter. An air passage through which air flows is formed in the air cleaning device. Each part is arranged so that the flow in the air passage passes from the ionization part to the electrostatic filter.

Incidentally, an electrostatic filter as a dust collecting section and an ionizing section can be maintained. That is, the casing of the ionization section and the casing supporting the electrostatic filter are formed separately from each other, and the ionization section and the electrostatic filter are separately and detachably attached to the apparatus main body.

[0004]

However, if the ionization section and the dust collection section are separately attached to the apparatus main body, it takes time and effort to attach and detach during maintenance, which is troublesome. Further, if the ionization unit and the dust collection unit can be separately mounted on the apparatus main body, the structure becomes complicated and the number of parts increases, so that the parts cost and the assembly cost are increased and the cost is increased. Moreover, the casing of the ionization section and the electrostatic filter is large and expensive.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned technical problems and to provide a dust collecting element for an air purifying apparatus which has an electrostatic filter, is easy to maintain, and is inexpensive.

[0006]

In order to achieve the above object, the dust collecting element of the air purifying apparatus according to the first aspect of the present invention is a dust collecting element detachable from the air purifying apparatus main body, and is provided in the air purifying apparatus. An ionizing section for charging dust and a roll filter as a dust collecting section are provided, and a cassette section for supporting the roll filter is integrally formed in a casing of the ionizing section. The cassette section is an ionizing section in a roll filter in a use area. A support claw which is supported in a state where the surface opposite to the surface facing the surface is exposed and which locks at least four corners of the roll filter in the use area and is integrally formed.
And the support nail includes a piercing nail that penetrates the roll filter in the use area .

According to this configuration, the following operation is achieved.
That is, the ionization unit and the dust collection unit can be conveniently handled as a single dust collection element. For example, it is convenient to remove and attach the ionization unit and the roll filter to and from the air cleaning device body during maintenance. Further, since the roll filter is supported by the casing of the ionization section, a member for supporting the roll filter does not need to be provided separately from the casing. As a result, the number of parts can be reduced and the cost can be reduced. In particular, members for supporting the roll filter are more preferable because they tend to be large and expensive.

[0008] Also, since a high-rigidity casing can support the roll filter, even a roll filter that is flexible and difficult to handle can be handled easily and maintenance is easy. Further, since one surface of the roll filter in the use area is exposed and locked by the support claws, the structure for supporting the roll filter in the use area can be simplified, and the cost can be further reduced. Moreover, since the support claws and the casing are formed integrally, the cost can be further reduced. Further, in order to support the roll filter in the use area, it is sufficient to lock the roll filter with a support claw, so that no maintenance work is required. According to a second aspect of the present invention, there is provided a dust collecting element of the air purifying apparatus according to the first aspect, wherein one surface of the casing of the ionizing section includes a plurality of ionizing wires, A pair of opposing electrode plates disposed opposite to each other with the ionization line interposed therebetween is provided, and a cassette portion for supporting a roll filter in a use area is provided on another surface of the casing.

According to this configuration, the following operation is achieved in addition to the operation of the first aspect of the invention. In other words, the ionization section can be maintained from one side of the casing and the roll filter can be maintained from the other side without interfering with each other, which is more convenient. Use dust collecting element of the air cleaning device of the invention according to claim 3, in the dust collecting element of the air cleaning device according to claim 1 or 2, the piercing claws, unwound from a roll
It is characterized in that it penetrates the tip of the roll filter in the region . According to the present invention, the piercing claw can be locked by penetrating the roll filter in the use area .

[0010]

[0011]

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the accompanying drawings. Hereinafter, an air cleaning device having a function of purifying contaminants by a photocatalyst and a dust removing function by ionization will be described.However, the present invention is applied to an air cleaning device having only a dust removing function by ionization. No problem.

FIG. 1 is an exploded perspective view of an air purifying apparatus according to an embodiment of the present invention. The air cleaning device 1 includes a box-shaped housing 10 that partitions an air passage therein.
The following components are sequentially arranged in the housing 10 from the front along the air passage. That is, the pre-filter 21 for removing relatively large dirt and dust, and the dust particles in the flow (ventilation flow) along the air flow path are ionized by the ionization unit 22.
A dust collecting element 24 which is ionized by and is adsorbed by a roll filter 23 as a dust collecting section, a photocatalyst element 25 for holding a photocatalyst, and a photocatalyst is excited by irradiating the photocatalyst element 25 with ultraviolet rays to remove contaminants. A light source 26 for purifying and a blower fan 27 such as a sirocco fan for generating a ventilation flow in a predetermined direction are provided.

The housing 10 has a front case 11 having a suction port 11a on the front surface and defining an upstream portion of an air passage,
And a rear case 12 provided behind the front case 11. The rear case 12 defines a downstream portion of the air passage. An accommodation recess 12 a is formed on the front surface of the rear case 12. In the accommodation recess 12a, in order from the front,
Dust collection element 24, photocatalytic element 25, light source 26
Is attached detachably, a blower fan 27 is attached to the inner deep portion of the accommodation recess 12a, and an air outlet (not shown) is provided behind the blower fan 27.

The air passage is an air passage that flows from the inlet 11a into the front case 11 and the rear case 12 from the front to the rear, and reaches the outlet. FIG. 2 is a cross-sectional plan view of a schematic configuration of a dust collecting element, a photocatalytic element, and a light source of the air cleaning device of FIG. The dust-collecting element 24 is provided with a plurality of ionization lines 33 as a plurality of discharge lines extending in a direction perpendicular to the airflow direction and parallel to each other constituting the ionization unit 22, and opposed to each other with the ionization lines 33 interposed therebetween. Plate part 32 including each pair of counter electrodes 32a
And a casing 31 for positioning and fixing the opposing electrode plate portion 32 and the ionization wire 33 to each other. The ionization unit 22 charges the dust particles in the ventilation flow by an ion shower generated by corona discharge. Further, the roll filter 23 of the dust collecting element 24 includes an electrostatic filter 23a, and the electrostatic filter 23a can electrically adsorb the dust particles charged by the ionization unit 22. In addition, the opposite electrode plate part 32 is grounded.

The photocatalyst element 25 is provided with a photocatalyst which decomposes odor components and the like when irradiated with ultraviolet rays, and is provided with a plurality of ventilation holes 5.
It is carried on the surface or inside of a photocatalyst carrier 51 composed of a honeycomb structure having 1a. The photocatalyst refers to a substance that absorbs light and gives the energy to a reactant to cause a chemical reaction, and specifically, titanium oxide (TiO ₂ ) and zinc oxide (ZZ) having an anatase crystal structure.
nO) and tungsten oxide (WO ₃ ).

The light source 26 is, for example, a straight tube type cold cathode fluorescent lamp, and a plurality of light sources are provided. This light source 26
Can emit light having a wavelength of 320 to 420 nm,
There is no adverse effect on the human body, and the photocatalyst such as TiO ₂ or ZnO can be activated to efficiently purify pollutants. According to the air purifying device 1, the blowing fan 2
When the air conditioner 7 is operated, air is sucked in from the air inlet 11a, and while flowing through the above-described air passage, relatively large dust is captured by the pre-filter 21 and fine dust is charged by the ionization unit 22 to be electrostatically charged. Contaminants such as odor components are captured by the filter 23 a and purified by the photocatalytic element 25. The air thus purified is blown out from the outlet.

Hereinafter, the dust collecting element 24 will be described in detail. The outer shape of the dust collecting element 24 is as shown in FIG.
It is formed by the casing 31 of the ionization section 22. A casing 31 is detachably mounted in the housing recess 12a of the rear case 12 as the air cleaning device main body. The housing recess 12a has a first portion 12b formed in a semicircular cross section at a lower portion thereof, and a first portion 12b
And a second portion 12c above which is mounted the photocatalytic element 25. The lower part of the dust collecting element 24 is fitted into the first part 12b of the accommodation recess 12a, and the front face of the photocatalyst element 25 attached to the second part 12c and the rear face of the dust collecting element 24 are aligned. It is installed.

FIG. 3 is a perspective view of the dust collecting element of the air purifying apparatus of FIG. 1, as viewed from the rear with the roll filter removed. Please refer to FIG. 3 and FIG. The front part of the dust collecting element 24 has the above-described respective parts constituting the ionizing part 22. Also, the dust collection element 2
4 has a cassette portion 31a, and the roll filter 23 is mounted on the cassette portion 31a. A handle 31b for attachment and detachment is provided on a side surface of the dust collection element 24.

The roll filter 23 includes the above-described electrostatic filter 23a made of a chargeable non-woven fabric and a sheet-like filter 23b carrying a photocatalyst, and is constructed by superposing and joining both filters. As the electrostatic filter 23a, for example, a polyolefin-based chargeable nonwoven fabric having a basis weight of 50 g / m ² can be used. Further, when the roll filter 23 is attached to the cassette section 31a,
The sheet-like material includes a roll 23c, which is a portion wound around a tubular core 23e, and a roll filter portion 23d in a use area unwound from the roll 23c. The roll 23c is accommodated in the roll accommodation portion 31c of the cassette portion 31a, and the roll filter portion 23d in the use area fed from the roll 23c is arranged so as to be orthogonal to the ventilation flow. Further, in the roll filter portion 23d of this use area, the electrostatic filter 23a is arranged so as to face the ionization section 22.

The casing 31 is rectangular in a front view in a state of being housed in the housing recess 12a, and is formed in a substantially box shape having a small thickness in the front-rear direction. The casing 31 includes an upper edge portion 31f, a pair of side edge portions 31g hanging down from both left and right ends of the upper edge portion 31f, a lower plate portion 31h connecting lower portions of both side edge portions 31g, a lower plate portion 31h and an upper portion. Edge 31f
And a plurality of lattice portions 31i having a substantially T-shaped cross-section for connecting the two to each other. These parts are integrally formed of a resin material.

The ionizing wire 33 and the opposing electrode plate 32 are positioned and attached to the front side of the casing 31 to form the ionizing part 22. That is, the opposite electrode plate portion 32 is formed in a substantially corrugated shape having a rectangular wave cross section, a plurality of recesses 32b including the opposite electrode plate 32a erected on the plate surface, and a bottom portion of the recess 32b. (Located on the right side in FIG. 2). The concave stripes 32b are arranged between the adjacent lattice portions 31i. In addition, the ionization wire 33 is extended and extended in the concave streak 32b. The through-hole 32c becomes a part of the above-mentioned air passage, and the ventilation flow can pass around the ionization line 33.

The cassette section 31a includes a use area holding section 31d for supporting the roll filter section 23d in the use area,
A roll accommodating portion 31c for holding the roll 23c. These components are constituted by a casing 31. In the roll storage portion 31c, the lower plate portion 31h of the casing 31 is formed in a semicircular cross section,
Is defined. This recess is open rearward, and the roll 23c can be mounted in the recess from the rear.

The roll accommodating portion 31c has a plurality of guide ribs 31j for guiding a portion of the roll filter 23 near the roll 23c. The roll accommodating portion 31c has a core holding portion 31m that detachably holds the core 23e of the roll 23c. Core holding part 3
1m is a groove 31n formed on both side edges 31g and opened rearward, and a core 2
3e for accommodating 3e.

The entrance of the groove 31n is formed wider than the inside, so that the core 23e can be easily inserted into the inside. The accommodation portion 31p is formed in a size corresponding to the diameter of the core 23e. The connection between the housing 31p and the groove 31n, that is, the entrance of the housing 31p is
e is smaller than the diameter of e by a predetermined amount.
Since the core 23e can be locked, it is possible to prevent the core 23e from being accidentally dropped from the housing portion 31p. Accordingly, it is possible to prevent the roll filter 23 from falling out of the dust collecting element 24 carelessly.
4 is easy to handle. In order to insert the core 23e into the housing portion 31p, the side edge portion 31g is elastically deformed and the housing portion 31p
You can enter while pushing the entrance. Core 23e
Into the groove 31n from the entrance behind the groove 31n,
The groove 31n guides the core 23e, and the core 23e can be arranged and held in the accommodation portion 31p. Further, in a state where the dust collecting element 24 is mounted in the accommodation recess 12a,
Since the entrance of the groove 31n is closed by the first portion 12b of the concave portion 12a, the core 23e in the core holding portion 31m is prevented from coming off to the outside.

The guide rib 31j is formed on the rear surface of the lower plate portion 31h, and when the roll filter 23 is fed out from the roll 23c, the roll filter portion 2 of its use area is used.
The guide can be smoothly guided to the use area holding portion 31d that supports the 3d. The use area holding portion 31d is set at a rear surface portion of the casing 31 and a portion through which a ventilation flow passes.
The use area holding portion 31 d is provided on the upper edge portion 31 of the casing 31.
The front surface of the roll filter portion 23d in the use area can be along the rear surface including the rear surface of the f, the upper end portion of the lower plate portion 31h, the rear surface of the lattice portion 31i, and the rear surface of the counter electrode plate portion 32. A plurality of support claws are provided on the rear surface of the casing 31 to lock the four corners of the roll filter portion 23d in the use area. In this state, the casing 31 supports the roll filter portion 23d in the use area in a state where the surface on the opposite side to the ionization unit 22 is exposed.

The support claws lock the four corners of the roll filter portion 23d in the use area. The supporting claw includes a hook piercing claw 31 s that locks two places above the roll filter portion 23 d in the use area, and the roll filter portion 23 in the use area.
and guide pawls 31t for locking two lower portions of d. Here, the support claws may lock more portions of the roll filter 23, as long as they can lock at least four corners.

The guide claw 31t is located near the core holding portion 31m, and is integrally formed at the rear end of the side edge 31g of the casing 31 with an L-shaped cross section. Guide claw 31t
Has a portion along the edge of the roll filter portion 23d in the use area, and a portion extending inward from the rear end of the portion along the roll filter 23 along the roll filter 23. The guide claws 31t are provided such that a pair thereof opposes each other. The pair of guide claws 31t can hold both sides of the roll filter portion 23d in the use area near the core 23e and guide the roll filter 23 from the roll 23c.

The stab claws 31s are integrally formed on the upper edge 31f of the casing 31 in a pair of hooks bent upward. The pair of stab claws 31s is formed by the roll filter 2
3 can be locked. This air purifier 1
Then, the dust collecting element 24 can be maintained as follows. That is, as shown in FIG.
When the front case 11 is removed, the housing recess 12a is opened forward. In this state, the dust collecting element 24 can be removed by pulling the casing 31 upward and forward. Also, it can be mounted by the reverse operation. As described above, the ionization unit 22 and the roll filter 23 can be integrally handled as the dust collection element 24, and can be attached and detached at the same time.

In the removed dust collecting element 24, the ionizing section 22 can be cleaned from the front side.
Further, the roll filter 23 can be cleaned from the rear side of the dust collecting element 24. As for the care of the roll filter 23, for example, the roll filter portion 23 d in the used area that has become dirty and used is removed from the casing 31 and cut off. Next, roll 23c
Unused roll filter 23 is fed out of the casing 3 as a roll filter portion 23d in the use area, and the four corners thereof are engaged with the stab claws 31s and the guide claws 31t.
1 (see FIG. 3). Thus, the roll filter 23 can reduce the frequency of replacement.

When the roll filter 23 is used up, the roll filter 23 is replaced. That is, the used core 23e is taken out from the core holding portion 31m, the unused core 23e of the roll filter 23 is inserted into the groove 31n, and held in the accommodating portion 31p.
3c is mounted on the roll storage portion 31c. Then, as described above, the roll filter portion 23d in the use area may be mounted.

As described above, when the roll filter 23 is cared for, each part of the ionization unit 22 does not have to be removed, and the maintenance of the ionization unit 22 and the roll filter 23 can be performed without interfering with each other. . As described above, according to the present embodiment, the following effects can be obtained. That is, the ionization unit 22 and the roll filter 23
Can be integrally treated as the dust collecting element 24, so that there is no trouble in attaching and detaching during maintenance.

Further, since the roll filter 23 can be normally supported by the high-rigidity casing 31, it is easy to handle.
Easy maintenance. In addition, since the roll filter 23 can be supported by being locked by the support claws, no labor is required. In particular, locking by the stab claws 31s and the guide claws 31t can be easily performed.

The ionization section 22 is formed on the front surface of the casing 31 and the cassette section 31a for supporting the roll filter 23 is provided on the rear surface of the casing 31.
Can be maintained without disturbing each other,
It is even more convenient. In this case, the dust collecting element 24
Is not limited to the above-described one, and the point is that a plurality of ionization lines 33 and a pair of opposing electrode plates 32 a disposed opposite to each other with the ionization lines 33 interposed therebetween on one surface of the casing 31. It is sufficient that the cassette portion 31a that is disposed and that supports the roll filter portion 23d in the use area is provided on the other surface of the casing 31.

The roll filter 23 is connected to the ionizing section 2.
Since it is supported by the second casing 31, a member for supporting the roll filter 23 does not need to be provided separately from the casing 31, so that the number of parts can be reduced and the cost can be reduced. In particular, a member for supporting the roll filter 23 is more preferable because it tends to be large and expensive.

Further, since the cassette portion 31a exposes the rear surface of the roll filter 23 and is locked by the support claws, the structure for supporting the roll filter 23 can be simplified and the cost can be further reduced. Moreover, since the support claws and the casing 31 are formed integrally, the cost can be further reduced. Further, since both the ionization unit 22 and the roll filter 23 are integrated, the two can be brought close to each other, and the electrostatic filter 23a of the roll filter portion 23d in the use area and the counter electrode plate unit 32
As a result, the electrostatic filter 23a can be reliably grounded via the opposing electrode plate portion 32. Therefore, the dust collection efficiency of the electrostatic filter 23a can be kept high. If the electrostatic filter cannot be reliably grounded, charges may accumulate in the electrostatic filter and the dust collection efficiency may be reduced.

In particular, the roll filter portion 23 in the use area
By placing d along the casing 31 or the like, the d can be easily mounted at a predetermined position on the casing 31 without slack, so that the electrostatic filter 23a can be grounded more reliably. Further, since the roll filter portion 23d in the use area can be arranged along the counter electrode plate portion 32 to be grounded, the electrostatic filter 23a can be grounded more reliably. In addition, as shown in FIG. 2, the electrostatic filter 23a can be grounded more reliably by the front end portion 52a of the member 52 that comes into contact with a part of the roll filter portion 23d in the use area from behind.

The configuration of the cassette section 31a is not limited to the above-described one. In short, it is only necessary to support the roll filter portion 23d in the use area . Further, in the above-described embodiment, the air cleaning apparatus having the function of purifying the contaminant by the photocatalyst and the function of removing dust by ionization has been described. In this case, the light source 26, the photocatalytic element 25, the sheet-like filter 23b of the roll filter 23, and the like can be omitted.

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

[0040]

According to the first aspect of the present invention, the following effects can be obtained. That is, since the ionization unit and the dust collection unit can be integrally treated as a dust collection element, there is no trouble in attaching / detaching to / from the air cleaning device main body, which is convenient for maintenance. In addition, since the casing of the ionization section supports the roll filter, it is not necessary to provide a large and expensive member for supporting the roll filter separately from the casing, so that the number of parts of the dust collection element can be reduced,
It can be cheap. Further, since the roll filter can be usually supported by a high-rigidity casing, it is easy to handle and easy to maintain. Further, the cassette section can support the four corners of the roll filter in the use area where one surface is exposed, and lock it with support claws, thereby simplifying the structure for supporting the roll filter in the use area and making it even more inexpensive. . Moreover, since the support claws and the casing are formed integrally, the cost can be further reduced. Further, if the roll filter in the use area is locked by the support claws, the roll filter can be supported, so that no labor is required.

According to the second aspect of the invention, in addition to the effects of the first aspect, the ionization portion is provided on one surface of the casing and the cassette portion is provided on the other surface. The ionization unit and the roll filter can be maintained without interfering with each other, which is more convenient. According to the third aspect of the present invention, using the stabbing claw
It can be locked through the roll filter in the application area .

[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 sectional plan view of a schematic configuration of a dust collecting element, a photocatalytic element, and a light source of the air cleaning device of FIG.

FIG. 3 is a perspective view of a dust collecting element of the air cleaning device of FIG. 1, as viewed from the rear with a roll filter removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier 12 Rear case (air purifier main body) 22 Ionization part 23 Roll filter 23d Roll filter part of use area 24 Dust collection element 31 Casing 31a Cassette part 31d Use area holding part 31s Pricking nail (supporting nail) 31t Guide nail (Supporting claw) 32a Opposing electrode plate 33 Ionization wire

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-70746 (JP, U) West German Patent Application Publication No. 2310901 (DE, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B03C 3/00-3/88

Claims (3)

(57) [Claims] 1. A dust collecting element (24) detachable from an air purifying apparatus main body (12), comprising: an ionization section (22) for charging dust in the air; and a roll filter (23) serving as a dust collection section. And a roll filter (23) on the casing (31) of the ionization section (22).
The cassette section (31a) for supporting the roll filter (2a) is integrally formed with the cassette section (31a).
3d) is supported in a state where the surface opposite to the surface facing the ionization part (22) is exposed, and at least four corners of the roll filter (23d) in the use area are locked and integrally formed.
The supporting claws (31s, 31t) are provided, and the supporting claws (31s, 31t)
A piercing nail (31 ) penetrating the roll filter (23d) in the above-mentioned use area
s). A dust collecting element for an air purifier, characterized by comprising: 2. A dust collecting element (24) for an air purifying apparatus according to claim 1, wherein one surface of a casing (31) of said ionizing section (22) has a plurality of ionizing wires (33). And a pair of opposing electrode plates (32a) arranged opposite to each other with the ionization line (33) interposed therebetween, and the other surface of the casing (31) supports the roll filter (23d) in the use area. A dust collecting element for an air purifying device, comprising a cassette portion (31d). 3. The dust collecting element of the air cleaning device according to claim 1 or 2 (24), the piercing claws (31s) is used which is fed from a roll (23c)
A dust collecting element for an air purifier, characterized in that it penetrates a tip of a roll filter (23d) in a use area .