JP2000325446A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the deodorization efficiency of a photocatalyst while making the product more compact in size. SOLUTION: In an air cleaner provided with a photocatalyst filter 4 and a lamp 5 that radiates near ultraviolet radiation to activate the photocatalyst filter 4, by providing a prescribed space between a main filter 3 and a diaphragm 15 partitioning the suction side of a blower 2, attaching the photocatalyst filter 4 to the brim of the inlet 16 of the blower 2 formed in the diaphragm 15 and arranging a lamp 5 in a position nearer the blower 2 than the brim of the inlet 16 so that it may have a prescribed space B with the photocatalyst filter 4, a space where a draft having passed through the main filter 3 flows through (namely, a clearance A)can be obtained, and a light irradiation space can be secured between the photocatalyst filter 4 and the lamp 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier used for deodorizing and purifying indoor air.

[0002]

2. Description of the Related Art In recent years, air purifiers have been developed and used to purify indoor air by deodorizing and removing off-odor substances and the like contained in indoor air.

[0003] The air purifier has a built-in air blower and a main filter in a casing. The room air sucked through an air inlet is deodorized by passing through a main filter, and then blown into the room from an air outlet. Although the structure is well known in the past, in order to further improve the deodorizing function, a near-ultraviolet ray for activating the photocatalyst filter formed by applying a photocatalyst on the downstream side of the main filter and the photocatalyst is applied. Arrangements with radiating lamps have been developed.

[0004]

As for the positional relationship between the photocatalyst filter and the lamp, it is desirable that near-ultraviolet rays emitted from the lamp be applied to the entire surface of the photocatalyst filter. In the meantime, since it is necessary to secure a predetermined space to facilitate the flow of the airflow that has passed through the entire surface of the main filter, the depth of the product increases depending on the mounting position of the lamp. Occurs.

[0005] The present invention has been made in view of the above points, and an object of the present invention is to improve the deodorizing efficiency by using a photocatalytic filter while reducing the size of a product.

[0006]

According to the first aspect of the present invention, as a means for solving the above-mentioned problems, a blower incorporated in a casing, a main filter provided on a suction side of the blower, An air purifier including a photocatalyst filter disposed between a main filter and a suction side of the blower, and a lamp that emits near-ultraviolet light for activating the photocatalyst filter, wherein the suction of the main filter and the blower is performed. A predetermined space is provided between the partition and a side partition, and the photocatalyst filter is attached to an edge of a suction port of the blower formed in the partition, and the lamp is provided between the partition and the photocatalyst filter. The suction port is disposed at a position closer to the blower than the edge of the suction port so as to have a predetermined interval.

[0007] With the above configuration, it is possible to secure a sufficient flow space for the airflow passing through the main filter and to secure a light irradiation space between the photocatalyst filter and the lamp. . Therefore,
The activation efficiency of the photocatalytic filter by the lamp can be improved while reducing the depth dimension of the product.

[0008] As in the invention of claim 2, claim 1
In the air purifier described above, when the photocatalyst filter is formed in a rectangular shape and the lamp is disposed corresponding to a diagonal line of the photocatalyst filter, the irradiation efficiency of near-ultraviolet rays emitted from the lamp to the photocatalyst filter is improved. It will be.

As in the invention of claim 3, claim 1
In the air purifier according to any one of (1) and (2), when a recessed portion into which the lamp is removably inserted is formed at an edge of the suction port, the lamp can be positioned with a simple structure.

[0010] As in the invention of claim 4, in the air purifier according to any one of claims 1, 2 and 3, the fitting surface between the main filter and a filter frame to which the main filter is attached, In the case of a tapered shape in which the opening area decreases in the suction direction, the sliding surface of the main filter comes into pressure contact with the filter frame by suction air pressure, and air leakage between the main filter and the filter frame occurs. Can be prevented. Therefore, the whole amount of the suction air flow passes through the main filter, and the air cleaning performance can be improved.

As in the invention of claim 5, in the air purifier according to any one of claims 1, 2, 3 and 4, when a photocatalyst is applied to a surface of the impeller of the blower, Dirt attached to the impeller can be decomposed. Therefore, even in the case of continuous use, the surface of the impeller is hardly stained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, this air purifier is provided with a blower 2 and a dust, an odorous substance and the like in the air located on a suction side of the blower 2 in a casing 1 having a substantially rectangular box shape. A main filter 3 for adsorption and collection, a photocatalyst filter 4 disposed between the main filter 3 and the suction side of the blower 2, and a lamp 5 for emitting near-ultraviolet light for activating the photocatalyst filter 4. It is arranged and configured.

The casing 1 is provided with a front frame 6 made of synthetic resin and having an open back side located on the suction side of the blower 2.
And a rear frame 7 made of synthetic resin and having an open front side facing the front frame 6. The rear frame 7 and the front frame 6 are coupled via screws 8.

A rectangular air inlet 9 is formed in the casing front frame 6 (see FIG. 2), and a suction grill 10 is detachably disposed in the air inlet 9.

On the other hand, an air outlet 11 for blowing clean air Wf is formed on one side of the upper surface of the casing back frame 7 (the left portion in FIG. 3).

The blower 2 has a fan motor 12 as a driving source, a multi-blade impeller 13 rotationally driven by the fan motor 12, and a scroll-type fan housing 14 that covers the multi-blade impeller 13. 3), and the fan housing 1
4 is a partition plate 15 for partitioning the suction side of the blower 2 and a part of the rear frame 7 (for example, a rear portion 7a and the rear portion 7).
a) and a rib 7b) integrally protruding forward from a. The partition plate 15 has an inlet 1 for the blower 2.
6 are formed. In addition, the fan housing 14
A discharge port 17 is formed at a position corresponding to the air outlet 11 at the upper part of the nozzle.

A motor support member 18 for supporting the fan motor 12 is formed integrally with an edge of the suction port 16 in the partition plate 15. The motor support member 18 is provided with three support arms 18a extending in a curved manner toward the rear side of the casing 1 from the position at equal intervals in the circumferential direction at the edge of the suction port 16 and extending toward the center.
18a, 18a and the support arms 18a, 18a, 18a
And a disk-shaped motor die portion 18b for supporting the fan motor 12. And
The fan motor 12 has a motor die portion 18b of the motor support member 18 and a screw 19 attached to each of the support arms 18a.
, And is supported in a state of being sandwiched between fixing members 20 having a substantially L-shaped cross section.

The main filter 3 is provided with a suction air Wr
Filter 21 for removing dust and the like contained in
And an activated carbon filter 22 provided integrally on the downstream side of the pre-filter 21 to adsorb and remove odor components and the like contained in the suction air Wr. The pre-filter 21 and the activated carbon filter 22 are The outer periphery is integrated by fixing it with a tape 23 (FIG. 4).
And FIG. 5).

The main filter 3 is removably fitted and supported on a filter support frame 24 integrally formed on the front frame 6 so as to be located on the suction side of the blower 2 and to be continuous with the air suction port 9. However, in the present embodiment, the fitting surface between the main filter 3 and the filter frame 24 is tapered so that the opening area decreases in the suction direction. That is, the outer peripheral surface of the main filter 3 and the inner peripheral surface of the filter frame 24 have an inclination angle θ that decreases in the suction direction. In this way, the main filter 3
Of the filter frame 24 by suction air pressure
Are pressed against each other in a state of surface contact, so that air leakage between the main filter 3 and the filter frame 24 can be prevented. Accordingly, the entire amount of the suction air flow passes through the main filter 3, and the air cleaning performance can be improved.

As shown in FIG. 6, the photocatalyst filter 4 has a photocatalyst M (for example, titanium oxide) in a rectangular filter body 4a formed by alternately joining flat paper and corrugated paper. The partition plate 15 is formed by coating.
Are removably positioned and fixed to four positioning portions 25, 25,... Formed on the front surface of the edge of the suction port 16 in FIG. Reference numeral 26 denotes a rib formed between the positioning portions 25, 25,.
Due to the presence of 6, 26,..., The photocatalyst filter 4 is attached while being slightly lifted from the edge of the suction port 16.

Further, on the front surface of the partition plate 15, outside the positioning portions 25, 25,..., A gap A between the main filter 3 and the photocatalyst filter 4 is secured so that the air passing through the main filter 3 is secured. Suction port 1
The filter supporting ribs 27, 27,... In this way, the main filter 3
And a sufficient gap A between the photocatalyst filter 4 and the photocatalyst filter 4 to facilitate the flow of air,
The amount of air passing through the main filter 3 can be increased. Therefore, the air cleaning performance is improved.

The lamp 5 is a rod-shaped near-ultraviolet lamp. As shown in FIG. 7, the lamp 5 is formed at a position corresponding to a diagonal line of the photocatalytic filter 3 at an edge of the suction port 16 in the partition plate 15. A pair of recesses 28, 2
8 is attached detachably by inserting both ends. In this way, a predetermined interval B (in other words, a light irradiation space) can be secured between the photocatalytic filter 4 and the lamp 5, and near-ultraviolet light emitted from the lamp 5 is transmitted to the photocatalytic filter 4. Irradiation efficiency can be improved. Therefore, the activation efficiency of the photocatalytic filter 3 can be improved while reducing the depth dimension of the product. In order to prevent bending of the intermediate portion of the lamp 5, several pairs of ribs 29, 29 for supporting the intermediate portion of the lamp 5, are integrally formed on the front surface of the motor die portion 18b of the motor support member 18 (see FIG. FIG.
reference).

With the arrangement of the lamp 5 as described above, near-ultraviolet rays from the lamp 5 will also irradiate the impeller 13 in the blower 2. The photocatalyst M is also applied (see FIG. 1). Dirt attached to the impeller 13 of the blower 2 can be decomposed, so that the surface of the impeller 13 is hardly stained even in the case of continuous use.

By the way, an attempt has been made to impart aroma to the clean air Wf purified by the air purifier to make the indoor environment comfortable, but in the conventional method, the air blown out from the blower 2 is used. In the main stream of the flow Wf (that is, the air flow path from the discharge port 17 of the blower 2 to the air outlet 11)
A deodorant fragrance was arranged in the garment. However,
This increases the amount of air contact with the deodorant fragrance, which not only causes a pressure loss, but also increases the consumption per hour of the deodorant fragrance, thereby shortening the life of the deodorant fragrance. There was a problem that would be.

Therefore, in the present embodiment, the main flow of the airflow Wf blown from the blower 2 (ie, the blower 2
The deodorizing fragrance F is arranged at a position distant from an air flow path from the discharge port 17 to the air outlet 11 (see FIG. 3). Reference numeral 11a denotes an air outlet from which the air flow W 'that has passed through the deodorizing fragrance F flows out. In this way, the deodorizing fragrance F comes into contact with the low-speed airflow W ′ induced by the airflow Wf blown from the blower 2, and a pressure loss occurs in the airflow Wf from the blower 2. In addition, the life of the deodorant fragrance F can be prolonged, and the fragrance imparted to the clean air Wf becomes subtle.

In the case of the air purifier having the above configuration, the diameter of the multi-blade impeller 13 in the blower 2 is increased so that a large air volume can be obtained. Then, the vibration of the fan motor 12 is transmitted to the multi-blade impeller 13, and a vibration sound may be generated. Therefore, the coupling structure between the rotating shaft 12 a of the fan motor 12 and the multi-blade impeller 13 is devised. There is a need.

Therefore, in this embodiment, as shown in FIGS. 8 and 9, a bearing boss 30 formed by externally press-fitting a cylindrical anti-vibration rubber 31 at the tip of the fan motor rotating shaft 12a. The multi-blade impeller 13 is fixed and fixed to the multi-blade impeller 13 via a mounting bracket 32 embedded in the outer peripheral portion of the vibration-proof rubber 31. The bearing boss 30 and the vibration isolating rubber 31
Are axially fixed at both ends between a bearing bracket 33 fixed to the fan motor rotating shaft 12a and a shaft holding bracket 34 tightened by a nut 35 screwed to a tip of the fan motor rotating shaft 12a. ing. Further, an annular portion 36a and a plurality (for example, six) of radial ribs at equal intervals in the circumferential direction extending from the annular rib 36a toward the center portion are provided on the pressure contact surface of the vibration-proof rubber 31 with the shaft holding member 34. A rib 36 composed of 36b, 36b,. By doing so, the fan motor 1
2 is interrupted by the anti-vibration rubber 31, and the elastic deformation of the ribs 36 enhances the support rigidity of the anti-vibration rubber 31, thereby preventing rotation of the multi-blade impeller 13. . The shape of the rib 36 is not limited to the shape in the present embodiment, and may be any shape as long as a uniform amount of elastic deformation can be obtained in the circumferential direction.

In the air purifier configured as described above, the indoor air Wr sucked from the air inlet 9 by driving the blower 2 removes dust and the like by the main filter 3 and adsorbs and collects odorous substances and the like. Then, the odor component and the like are decomposed and removed by the photocatalyst filter 4 to become clean air Wf, which is blown out from the air outlet 11 into the room.

[0030]

According to the first aspect of the present invention, a blower incorporated in a casing, a main filter disposed on a suction side of the blower, and a main filter disposed between the main filter and the suction side of the blower. In an air purifier provided with a photocatalyst filter disposed therein and a lamp that emits near-ultraviolet light for activating the photocatalyst filter, a predetermined space is provided between the main filter and a partition plate that partitions a suction side of the blower. And the photocatalyst filter is attached to the rim of the suction port of the blower formed on the partition plate, and the lamp is connected to the port of the suction port so as to have a predetermined space between the lamp and the photocatalyst filter. It is arranged at a position on the side of the blower from the edge, so that a sufficient space for the airflow passing through the main filter can be secured, and the photocatalyst filter can be provided. Since to be able to secure the irradiation space of light between the coater and the lamp, there is an effect that it is possible to improve the activation efficiency of the photocatalyst filter while compacting depth of product.

As in the invention of claim 2, claim 1
In the air purifier described above, when the photocatalyst filter is formed in a rectangular shape and the lamp is disposed corresponding to a diagonal line of the photocatalyst filter, the irradiation efficiency of near-ultraviolet rays emitted from the lamp to the photocatalyst filter is improved. It will be.

As in the invention of claim 3, claim 1
In the air purifier according to any one of (1) and (2), when a recessed portion into which the lamp is removably inserted is formed at an edge of the suction port, the lamp can be positioned with a simple structure.

[0033] As in the invention of claim 4, in the air purifier according to any one of claims 1, 2 and 3, the fitting surface between the main filter and a filter frame to which the main filter is attached, In the case of a tapered shape in which the opening area decreases in the suction direction, the sliding surface of the main filter comes into pressure contact with the filter frame by suction air pressure, and air leakage between the main filter and the filter frame occurs. Can be prevented. Therefore, the whole amount of the suction air flow passes through the main filter, and the air cleaning performance can be improved.

As in the invention of claim 5, in the air purifier according to any one of claims 1, 2, 3, and 4, when a photocatalyst is applied to the surface of the impeller of the blower, Dirt attached to the impeller can be decomposed. Therefore, even in the case of continuous use, the surface of the impeller is hardly stained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view (that is, a II sectional view of FIG. 2) of an air purifier according to an embodiment of the present invention.

FIG. 2 is a front view of the air purifier according to the embodiment of the present invention, with a suction grille, a main filter, and a photocatalytic filter removed.

FIG. 3 is a vertical sectional front view of the air purifier according to the embodiment of the present invention.

FIG. 4 is a front view of a main filter in the air purifier according to the embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a mounting structure of a main filter in the air purifier according to the embodiment of the present invention.

FIG. 6 is a partially enlarged cross-sectional view of a photocatalyst filter in the air purifier according to the embodiment of the present invention.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 2;

FIG. 8 is an enlarged cross-sectional view showing a shaft support structure of the multi-blade impeller in the air purifier according to the embodiment of the present invention.

FIG. 9 is an enlarged front view of an anti-vibration rubber constituting a shaft support structure of the multi-blade impeller in the air purifier according to the embodiment of the present invention.

[Explanation of symbols]

1 is a casing, 2 is a blower, 3 is a main filter,
4 is a photocatalytic filter, 5 is a lamp, 9 is an air inlet,
11 is an air outlet, 15 is a partition plate, 16 is a suction port, 18
Is a motor support member, 21 is a pre-filter, 22 is an activated carbon filter, 23 is a tape, 24 is a filter frame,
6 is a rib, 28 is a recess, A and B are gaps, M is a photocatalyst, θ
Is the tilt angle.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B01D 53/36 J F term (Reference) 4C080 AA07 AA10 BB02 CC12 HH05 JJ03 KK08 MM02 QQ11 QQ17 QQ20 4D048 AA22 AB01 AB03 BA07X BA41X BB08 CA06 CC32 CC40 CC41 CD05 EA01 4D058 JA12 JB13 JB26 KA01 KB12 QA03 QA11 TA03 TA06 TA07 TA11 4G069 AA02 AA03 BA04B BA48A CA01 CA07 CA10 CA17 DA06 EA09 EA10 FA08

Claims (5)

[Claims] A blower incorporated in a casing; a main filter disposed on a suction side of the blower; a photocatalyst filter disposed between the main filter and a suction side of the blower; An air purifier comprising a lamp that emits near-ultraviolet light for activating a photocatalytic filter, wherein a predetermined space is provided between the main filter and a partition plate that partitions a suction side of the blower, and the partition plate is provided. The photocatalyst filter is attached to the rim of the suction port of the blower formed in the lamp, and the lamp is placed closer to the blower side than the rim of the suction port so as to have a predetermined space between the photocatalyst filter and the lamp. An air purifier characterized by being disposed at a position where the air purifier is located. 2. The air purifier according to claim 1, wherein the photocatalyst filter has a rectangular shape, and the lamp is disposed corresponding to a diagonal line of the photocatalyst filter. 3. The air purifier according to claim 1, wherein a concave portion for detachably inserting the lamp is formed at an edge of the suction port. 4. A fitting surface between the main filter and a filter frame to which the main filter is attached is tapered so that an opening area decreases in a suction direction. 4. The air purifier according to claim 3. 5. The air purifier according to claim 1, wherein a photocatalyst is applied to a surface of the impeller of the blower.