CN109477652B - Air cleaning device and dust collecting filter - Google Patents
Air cleaning device and dust collecting filter Download PDFInfo
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- CN109477652B CN109477652B CN201780036373.6A CN201780036373A CN109477652B CN 109477652 B CN109477652 B CN 109477652B CN 201780036373 A CN201780036373 A CN 201780036373A CN 109477652 B CN109477652 B CN 109477652B
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- ultraviolet light
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- air filter
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- 239000000428 dust Substances 0.000 title claims abstract description 60
- 238000004140 cleaning Methods 0.000 title claims abstract description 14
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- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 239000002781 deodorant agent Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004887 air purification Methods 0.000 claims 9
- 230000037303 wrinkles Effects 0.000 claims 2
- 239000010410 layer Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
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- 230000001678 irradiating effect Effects 0.000 description 3
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 1
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Provided are an air cleaning device and a dust collection filter, which can make ultraviolet light reach a wide range of the surface of an air filter medium with a fold shape by a simple structure. The air cleaning device is provided with a dust collection filter (3) and an ultraviolet light source (5). The dust collection filter (3) is provided with an air filter medium (6) having a pleated shape and a holding member (7) for holding the shape of the air filter medium (6). The holding member (7) is provided with a base (7a) extending in a direction intersecting the longitudinal direction of the fold in the corrugated shape, and a projection (7b) projecting from the base (7a) toward the trough of the corrugated shape, wherein the ultraviolet light source (5) irradiates the holding member (7) with ultraviolet light, and at least a part of the holding member (7) diffuses and transmits the ultraviolet light.
Description
Technical Field
The present invention relates to an air cleaning device and a dust collecting filter.
Background
Dirt such as dust adhering to the air filter may contain microorganisms such as viruses, bacteria, and fungi, or organic substances such as pollen and odor components. A technique of inactivating such microorganisms or organic substances by irradiating an air filter with ultraviolet rays is known.
The air conditioner disclosed in patent document 1 has the following configuration. Has the function of sterilizing or degerming the surface of an air filter arranged in an indoor unit by using ultraviolet rays. The light guide plate is provided along the surface of the air filter, guides ultraviolet rays generated from the light source to a region facing the surface of the air filter, and irradiates the ultraviolet rays toward the surface of the air filter. A second light guide plate for diffusing the ultraviolet light irradiated from the light guide plate in the surface direction of the air filter is provided between the light guide plate and the air filter. The air filter includes a frame as a frame portion and a net portion held by the frame portion. The air filter is provided with a moving device for moving the light source and the light guide plate relative to the air filter.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 5651794
Disclosure of Invention
Problems to be solved by the invention
In order to apply the technique of patent document 1, a dedicated light guide plate, a moving device for moving the light guide plate, and the like are required, and therefore the number of components increases, and the cost increases.
The air filter provided in the air conditioner of patent document 1 has a planar mesh portion as a filter medium. In the air filter medium having such a planar shape, it is relatively easy to irradiate the surface with ultraviolet rays over a wide range. On the other hand, in a dust collecting filter such as an air cleaner, for example, an air filter medium folded in a corrugated shape is used in order to increase the surface area of the filter medium. When the air filter medium folded into a pleated shape is irradiated with ultraviolet light, there is a problem that the ultraviolet light hardly reaches the deep part of the valley part of the pleat.
The present invention has been made to solve the above-described problems, and an object thereof is to provide an air cleaning device and a dust collection filter that can reach ultraviolet rays over a wide range of the surface of an air filter medium having a pleated shape with a simple configuration.
Means for solving the problems
The air cleaning device of the present invention includes a dust collection filter and an ultraviolet light source, the dust collection filter includes an air filter medium having a pleated shape and a holding member holding the air filter medium in the shape, the holding member includes a base portion extending in a direction intersecting a longitudinal direction of folds of the pleated shape, and a protruding portion protruding from the base portion toward a valley portion of the pleated shape, the ultraviolet light source irradiates ultraviolet light to the holding member, and at least a part of the holding member diffuses and transmits the ultraviolet light.
The dust collecting filter of the present invention includes an air filter medium having a pleated shape and a holding member for holding the air filter medium, wherein the holding member includes a base portion extending in a direction intersecting a longitudinal direction of folds of the pleated shape and a protruding portion protruding from the base portion toward a valley portion of the pleated shape, and at least a part of the holding member diffuses and transmits ultraviolet rays.
Effects of the invention
According to the present invention, at least a part of the holding member that holds the shape of the air filter medium diffuses and transmits ultraviolet rays, and thereby ultraviolet rays can reach a wide range of the surface of the air filter medium having a corrugated shape with a simple configuration.
Drawings
Fig. 1 is a schematic sectional side view of an air cleaner of embodiment 1.
Fig. 2 is a schematic perspective view of the dust collection filter and the ultraviolet light source provided in the air cleaner of embodiment 1.
Fig. 3 is a schematic view of a dust collection filter and an ultraviolet light source provided in the air cleaner of embodiment 1.
Fig. 4 is a schematic cross-sectional view showing the internal structure of the material constituting the holding member in embodiment 1.
Fig. 5 is a schematic cross-sectional view of a part of an air filter medium according to embodiment 1.
Fig. 6 is a schematic front view of the air purifier of embodiment 2.
Fig. 7 is a schematic view of the dust collecting filter and the ultraviolet light source in embodiment 3.
Fig. 8 is a schematic view of the dust collecting filter and the ultraviolet light source in embodiment 4.
Detailed Description
Hereinafter, embodiments will be described with reference to the drawings. In the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is simplified or omitted. The present disclosure may include all combinations of combinable structures among the structures described in the embodiments below.
Embodiment mode 1
Fig. 1 is a schematic sectional side view of an air cleaner 1 of embodiment 1. The air cleaner 1 of embodiment 1 purifies air in a room. The air cleaner 1 is used, for example, placed on a floor in a room. The air cleaner 1 is an example of an air cleaning device. For easy understanding, as shown in fig. 1, an X axis, a Y axis, and a Z axis are set. The X, Y and Z axes are mutually orthogonal. The X-axis and Y-axis extend horizontally. The Z axis extends vertically. In fig. 1, the left side is the front of the air cleaner 1, and the right side is the rear of the air cleaner 1.
As shown in fig. 1, the air cleaner 1 includes a housing 2, a dust collection filter 3, an air blowing device 4, and an ultraviolet light source 5. A dust collection filter 3, an air blowing device 4, and an ultraviolet light source 5 are housed inside the housing 2. An air inlet 2a is provided in the front surface of the housing 2. An air outlet 2b is provided in an upper surface portion of the housing 2. The blower 4 may be a sirocco fan, for example. A suction port 2c of the blower 4 is formed inside the housing 2. When the air blowing device 4 is operated, it is as follows. The air in the room is sucked into the housing 2 through the suction port 2 a. The air flows in the Y-axis direction and passes through the dust collection filter 3. The air purified by the dust collection filter 3 flows in the Y-axis direction and flows into the blower 4 through the suction port 2 c. The purified air is blown out of the housing 2 from the air blowing device 4 through the air outlet 2 b. The dust collecting filter 3 may be a HEPA filter, for example. The air cleaner 1 may further include other devices (not shown), such as a pre-filter and a deodorizing filter.
The dust collection filter 3 includes an air filter medium 6 and a holding member 7. The air filter medium 6 is formed by bending a sheet-like medium into a pleated shape. The air filter medium 6 may have a laminated structure. At least a part of the air filter medium 6 is composed of an air-permeable fiber layer. The air-permeable fibrous layer may be formed of at least one of felt, nonwoven fabric, woven fabric, and mesh, for example. The material constituting the air-permeable fiber layer may be composed of at least one of polyolefin such as polyethylene or polypropylene, polyamide, rayon, and polyester such as polyethylene terephthalate (for example, PET). The thickness of the air filter medium 6 is not particularly limited, and may be, for example, about 0.05mm to 1 mm.
In the present embodiment, the dust collection filter 3 is disposed so that a plurality of elongated folded portions forming a corrugated shape of the air filter medium 6 are arranged in parallel in the vertical direction, which is the Z-axis direction. In other words, the dust collection filter 3 is disposed vertically with respect to the horizontal plane. The position in which the dust collection filter 3 is disposed is not limited to this. For example, the dust collection filter 3 may be disposed so that a plurality of elongated folded portions of the air filter medium 6, each of which has a pleated shape, are arranged in parallel in the horizontal direction. In other words, the dust collecting filter 3 may be disposed horizontally.
In the present embodiment, the dust collection filter 3 is disposed so that the longitudinal direction of the fold lines in the corrugated shape of the air filter medium 6 is the X-axis direction, i.e., the horizontal direction. Not limited to such a configuration, for example, the dust collection filter 3 may be disposed such that the longitudinal direction of the fold lines in the corrugated shape of the air filter medium 6 is the Z-axis direction, i.e., the vertical direction.
The holding member 7 is a member for holding the shape of the air filter medium 6. The holding member 7 is in contact with the surface of the air filter medium 6 to hold the shape of the air filter medium 6. In fig. 1, for the sake of easy observation, the surface of the air filter medium 6 and the holding member 7 are drawn so as to have a gap therebetween, but the holding member 7 actually comes into contact with the surface of the air filter medium 6. The same applies to other figures.
The holding member 7 includes a base portion 7a and a protruding portion 7 b. The base portion 7a is an elongated portion extending in a direction intersecting the longitudinal direction of the fold of the pleated shape of the air filter medium 6. In the present embodiment, the base portion 7a extends in the Z-axis direction, i.e., the vertical direction. The projecting portions 7b are portions projecting from the base portions 7a toward the trough portions of the pleated shape of the air filter medium 6. The plurality of projections 7b project from the base 7a in a comb-tooth shape. The protrusions 7b are inserted into each of the plurality of trough portions of the pleated shape of the air filter medium 6. The protrusions 7b contact the surface of the air filter medium 6, thereby maintaining the pleat spacing. In the illustrated structure, the shape of the protruding portion 7b is triangular. The shape of the projection 7b is not limited to this, and may be, for example, a trapezoid. The overall shape of the holding member 7 is a shape whose longitudinal direction is the vertical direction which is the Z-axis direction.
The dust collection filter 3 may further include an annular frame member (not shown) that holds the outer peripheral portion of the air filter medium 6. The holding member 7 may have both ends in the longitudinal direction supported on the inner peripheral portion of the frame member.
The ultraviolet light source 5 is disposed at a position where ultraviolet light is irradiated to at least the holding member 7 of the dust collection filter 3 when lit. In the present embodiment, an ultraviolet light source 5 is attached to the inner wall of the front surface of the housing 2.
The ultraviolet light source 5 may be a light source using a light emitting diode, that is, may be an ultraviolet LED. The wavelength of the ultraviolet light emitted from the ultraviolet light source 5 may include a wavelength in the range of 200nm to 300nm, for example. The ultraviolet light source 5 may be a light source other than an ultraviolet LED. For example, the ultraviolet light source 5 may be a mercury lamp.
Fig. 2 is a schematic perspective view of the dust collection filter 3 and the ultraviolet light source 5 included in the air cleaner 1 according to embodiment 1. Fig. 2 shows a part of the dust collecting filter 3. As shown in fig. 2, the holding member 7 is a plate-shaped member having a thickness direction in the X-axis direction. The holding member 7 is a plate-like member having a plane perpendicular to the X axis as a plane direction. The base portion 7a of the holding member 7 has a first surface 7c as a surface on the opposite side of the protruding portion 7 b. The ultraviolet light source 5 irradiates ultraviolet light to the first surface 7 c. The first surface 7c extends in the Z-axis direction. The first surface 7c is a plane perpendicular to the Y axis.
The width (length L1 in fig. 2) of the plurality of elongated folded portions of the air filter medium 6 formed into a pleated shape in the direction perpendicular to the longitudinal direction is not particularly limited, and may be, for example, 20mm to 50 mm. The interval between the pleats of the air filter medium 6 (length L2 in fig. 2) is not particularly limited, and may be, for example, 2mm to 5 mm.
The dust collection filter 3 includes a plurality of holding members 7. The plurality of holding members 7 are arranged at intervals in the X-axis direction, which is the longitudinal direction of the fold of the pleated shape of the air filter medium 6. In fig. 2, only one of the holding members 7 is shown.
Fig. 3 is a schematic diagram of the dust collection filter 3 and the ultraviolet light source 5 included in the air cleaner 1 according to embodiment 1. Fig. 3 shows a part of the dust collecting filter 3. Fig. 3 is a view seen from the X-axis direction. As shown in fig. 3, the ultraviolet rays emitted from the ultraviolet light source 5 enter the holding member 7 from the first surface 7 c. At least a part of the holding member 7 diffuses and transmits ultraviolet rays. The entire holding member 7 may be made to diffuse and transmit ultraviolet rays.
The holding member 7 has an opposing surface 7d opposing the surface of the air filter medium 6. The opposing surface 7d is a part of the surface of the protruding portion 7 b. The ultraviolet rays incident into the holding member 7 are diffused inside the holding member 7 and spread over the entire holding member 7. The ultraviolet rays diffused inside the holding member 7 are emitted from the surface of the holding member 7 to the outside and are irradiated to the surface of the air filter medium 6. For example, the ultraviolet rays emitted from the opposing surface 7d of the holding member 7 are irradiated to the surface of the air filter medium 6. Ultraviolet rays are also emitted from the surface of the holding member 7 perpendicular to the X axis, and these ultraviolet rays are irradiated to the surface of the air filter medium 6.
The broken line in fig. 3 shows an example of the range in which the ultraviolet light reaches the surface of the air filter medium 6. The ultraviolet light does not reach only the region of the surface of the air filter medium 6 that faces the facing surface 7d of the holding member 7. By emitting ultraviolet rays from the surface of the holding member 7 perpendicular to the X axis as well, the ultraviolet rays reach the surface of the air filter medium 6 at a position away from the holding member 7.
Some of the ultraviolet light emitted from the ultraviolet light source 5 may be directly applied to the surface of the air filter medium 6 without being incident on the holding member 7. All of the ultraviolet light emitted from the ultraviolet light source 5 may be incident on the holding member 7. At least a part of the ultraviolet light emitted from the ultraviolet light source 5 may be incident on the holding member 7.
Dirt such as dust collected by the air filter medium 6 may contain microorganisms such as viruses, bacteria, and fungi, or organic substances such as pollen and odor components. According to the present embodiment, such microorganisms or organic substances can be inactivated by allowing the ultraviolet light emitted from the ultraviolet light source 5 to reach the surface of the air filter medium 6 via the holding member 7. In the following description, the case where microorganisms or organic substances are inactivated by ultraviolet rays is referred to as "sterilization".
According to the present embodiment, the following effects can be obtained. By irradiating the surface of the air filter medium 6 with ultraviolet light through the holding member 7 that diffuses and transmits ultraviolet light, the ultraviolet light can reach a wide range of the surface of the air filter medium 6. In particular, by emitting ultraviolet light from the protrusions 7b located in the trough portions of the pleats of the air filter medium 6, the ultraviolet light can also reach deep between the trough portions of the pleats. The above-described effects can be obtained by the holding member 7 for holding the shape of the air filter medium 6, and an additional dedicated member for guiding ultraviolet rays is not required, so that an increase in cost can be suppressed. The ultraviolet light can reach a wide range of the surface of the air filter medium 6 without increasing the number of the ultraviolet light sources 5 or providing a moving device for moving the ultraviolet light sources 5. This makes it possible to sterilize a wide range of the surface of the air filter medium 6 with a simple configuration.
Fig. 4 is a schematic cross-sectional view showing the internal structure of the material constituting the holding member 7 in embodiment 1. As shown in fig. 4, at least a part of the holding member 7 is made of a resin material 7f in which particles 7e serving as a light diffusing agent are dispersed. The particles 7e and the resin material 7f have ultraviolet transparency that allows at least a part of the wavelength of the ultraviolet light emitted from the ultraviolet light source 5 to pass therethrough. The refractive indices of the particles 7e and the resin material 7f are different. The ultraviolet rays are reflected or refracted at the interface between the particles 7e and the resin material 7f, thereby diffusing the ultraviolet rays.
The resin material 7f may be, for example, an acrylic resin, a styrene resin, or the like. The material of the particles 7e may be, for example, an acrylic resin, a styrene resin, or the like. For example, a trade name "TechPolymer" available from hydration products, Inc. may be used as the particles 7 e. The particles 7e are not limited to being made of resin, and may be made of glass. The shape of the particles 7e is not limited to the spherical shape as shown in the figure, and may be a shape other than the spherical shape. The average particle diameter of the particles 7e may be, for example, in the range of 1 μm to 200. mu.m.
According to the present embodiment, the ultraviolet light source 5 irradiates the first surface 7c of the holding member 7 with ultraviolet light, whereby the ultraviolet light incident from the first surface 7c into the holding member 7 can be distributed uniformly close to the plurality of protrusions 7 b. The entire holding member 7 may diffuse and transmit the ultraviolet rays, but a part of the holding member 7 may have a portion through which the ultraviolet rays are transmitted. For example, the base portion 7a of the holding member 7 may transmit ultraviolet rays. When the base portion 7a allows ultraviolet rays to pass through, ultraviolet rays incident from the first surface 7c into the holding member 7 can be efficiently guided to the protruding portion 7 b. By diffusing the ultraviolet rays through the protrusions 7b, the ultraviolet rays can reach a wide range of the surface of the air filter medium 6. When the base portion 7a of the holding member 7 diffuses and transmits the ultraviolet rays, the ultraviolet rays incident into the holding member 7 from the first surface 7c can be distributed more evenly to the plurality of protruding portions 7 b. As described above, the structure in which the light from the ultraviolet light source 5 is easily diffused is particularly effective in the case of using an ultraviolet LED which emits light at a point and has a narrow irradiation range.
The ultraviolet light source 5 and the holding member 7 are preferably disposed on the upstream side with respect to the flow of air in the air cleaner 1. Dirt such as dust collected by the air filter medium 6 tends to accumulate on the upstream side surface of the air filter medium 6. By irradiating the air filter medium 6 with ultraviolet light from the upstream side of the air flow, the air filter medium 6 can be sterilized more efficiently.
The air filter medium 6 may include a plurality of layers. Fig. 5 is a schematic cross-sectional view of a part of an air filter medium 6 in embodiment 1. The air filter medium 6 shown in fig. 5 has a structure in which the first layer 6a and the second layer 6b are bonded to each other. The first layer 6a and the second layer 6b may be formed of fibers having different materials and/or different outer diameters. The first layer 6a may be a small mesh sheet for trapping dust. The strength of the small mesh sheet for trapping dust is low. The second layer 6b may be a large-mesh sheet for reinforcing the first layer 6 a. The dust collecting filter 3 may be disposed so that the second layer 6b having a large mesh size is on the upstream side and the first layer 6a having a small mesh size is on the downstream side with respect to the flow of air in the air cleaner 1. The air filter medium 6 is not limited to the illustrated configuration, and may include a plurality of layers of three or more layers.
The air filter medium 6 may be provided with a deodorant. The deodorant may be, for example, an activated carbon gum that adsorbs malodorous components. The deodorant may be, for example, a photocatalyst that decomposes an odor component. The photocatalyst may be, for example, titanium oxide. The deodorant may be carried on the surface of the fibers of the air filter medium 6. The deodorant may be mixed into the fibers of the air filter medium 6. When the air filter medium 6 includes a plurality of layers, at least one of the layers may include a deodorant.
Embodiment mode 2
Next, although embodiment 2 will be described with reference to fig. 6, differences from embodiment 1 will be mainly described, and the description of the same or corresponding portions will be simplified or omitted. Fig. 6 is a schematic front view of the air cleaner 1 of embodiment 2. Fig. 6 corresponds to a perspective view of a wall on the front surface of the housing 2 of the air cleaner 1. The air cleaner 1 of embodiment 2 is the same as the air cleaner 1 of embodiment 1 except for the following matters.
The air cleaner 1 of embodiment 2 includes a plurality of ultraviolet light sources 5. The dust collecting filter 3 can be considered to be divided into a first area 3a and a second area 3 b. The first region 3a is a region surrounded by a circle of a broken line in fig. 6. The second region 3b is a region outside the circle of the first region 3 a. The flow rate of air passing through the second region 3b is lower than the flow rate of air passing through the first region 3 a. The first region 3a is located opposite to the suction port 2c of the blower 4. Therefore, the flow rate of air passing through the first region 3a is higher than the flow rate of air passing through the second region 3 b. The higher the flow velocity of the air passing through the area, the larger the amount of dirt per unit area accumulated in the dust collection filter 3. Therefore, the amount of dirt per unit area accumulated in the first region 3a is larger than the amount of dirt per unit area accumulated in the second region 3 b.
In the example shown in fig. 6, 5 ultraviolet light sources 5 are arranged in the first zone 3a, and 4 ultraviolet light sources 5 are arranged in the second zone 3 b. The area of the first region 3a is smaller than the area of the second region 3 b. The area of the first region 3a is the area of the dashed circle in fig. 6. The area of the second region 3b is obtained by subtracting the area of the first region 3a from the projected area of the dust collection filter 3 on the plane perpendicular to the Y-axis.
A first arrangement density obtained by dividing the number of ultraviolet light sources 5 arranged in the first region 3a by the area of the first region 3a is higher than a second arrangement density obtained by dividing the number of ultraviolet light sources 5 arranged in the second region 3b by the area of the second region 3 b. In this way, the following effects can be obtained. The first region 3a having a large amount of dirt per unit area can be intensively irradiated with ultraviolet rays. Therefore, the dust collecting filter 3 can be sterilized more reliably.
Next, although embodiment 3 will be described with reference to fig. 7, differences from the above-described embodiments will be mainly described, and the description of the same or corresponding portions will be simplified or omitted. Fig. 7 is a schematic view of the dust collection filter 3 and the ultraviolet light source 5 in embodiment 3. Fig. 7 shows a part of the dust collecting filter 3. Fig. 7 is a view seen from the X-axis direction.
As shown in fig. 7, the holding member 7 provided in the dust collection filter 3 of the present embodiment has an incident surface 7g formed at an end of the base 7a in the longitudinal direction. The ultraviolet light source 5 is disposed so as to irradiate the incident surface 7g of the holding member 7 with ultraviolet light. The ultraviolet light incident into the holding member 7 from the incident surface 7g is diffused in the holding member 7 and spreads over the entire holding member 7. The ultraviolet rays diffused inside the holding member 7 are emitted from the surface of the holding member 7 to the outside and are irradiated to the surface of the air filter medium 6. The broken line in fig. 7 shows an example of the range in which the ultraviolet light reaches the surface of the air filter medium 6.
A part of the ultraviolet light incident into the holding member 7 from the incident surface 7g is guided in the longitudinal direction of the base portion 7a, and thereby reaches the protruding portion 7b located at a position distant from the incident surface 7 g. At least a part of the base portion 7a may transmit ultraviolet rays. By allowing at least a part of the base portion 7a to transmit ultraviolet rays, the ultraviolet rays can be efficiently made to reach the protruding portion 7b located at a position away from the incident surface 7 g.
The dust collection filter 3 of the present embodiment includes an ultraviolet reflection layer 8 provided on a part of the surface of the holding member 7. The ultraviolet reflection layer 8 is provided on the first surface 7c which is the surface opposite to the protruding portion 7 b. The ultraviolet reflecting layer 8 may be a metal film such as aluminum, for example. The metal film may be formed by vapor deposition, for example. A protective layer (not shown) covering the surface of the ultraviolet reflecting layer 8 may be further provided. According to the present embodiment, the following effects can be obtained by providing the ultraviolet reflecting layer 8. The ultraviolet rays can be prevented from being emitted from the first surface 7c of the holding member 7. If it is assumed that ultraviolet rays are emitted from the first surface 7c, the ultraviolet rays do not irradiate the air filter medium 6. In contrast, the ultraviolet reflecting layer 8 reflects the ultraviolet rays reaching the first surface 7c, thereby increasing the amount of ultraviolet rays emitted from the surface other than the first surface 7c of the holding member 7. Therefore, the amount of ultraviolet light irradiated to the air filter medium 6 can be increased.
According to the present embodiment, the ultraviolet light source 5 irradiates the incident surface 7g located at the end in the longitudinal direction of the base portion 7a of the holding member 7 with ultraviolet light, and the following effects can be obtained. The ultraviolet light source 5 can be disposed at a position not interfering with the flow of air passing through the dust collection filter 3. That is, the pressure loss in the air passage can be reduced.
Embodiment 4
Next, although embodiment 4 will be described with reference to fig. 8, differences from the above-described embodiments will be mainly described, and the description of the same or corresponding portions will be simplified or omitted. Fig. 8 is a schematic view of the dust collection filter 3 and the ultraviolet light source 5 in embodiment 4. Fig. 8 shows a part of the dust collecting filter 3. Fig. 8 is a view seen from the X-axis direction.
As shown in fig. 8, the holding member 7 of the dust collecting filter 3 according to embodiment 4 has a facing surface 7h instead of the facing surface 7d in embodiment 1. The opposing surface 7h opposes the surface of the air filter medium 6. The opposing face 7h is a part of the surface of the protruding portion 7 b. The opposing surface 7h is formed with a plurality of minute irregularities for diffusing ultraviolet rays. The irregularities of the opposing surface 7h may be formed by, for example, corrugation processing or shot peening.
The ultraviolet light emitted from the ultraviolet light source 5 enters the holding member 7 from the first surface 7 c. When the ultraviolet rays are emitted from the opposing surface 7h through the holding member 7, the ultraviolet rays are diffused by the irregularities of the opposing surface 7 h. In addition, the ultraviolet rays that have reached the opposing surface 7h in the holding member 7 are diffusely reflected by the irregularities of the opposing surface 7h, and the ultraviolet rays are diffused into the inside of the holding member 7. In this way, the ultraviolet rays incident into the holding member 7 spread over the entire holding member 7. The ultraviolet rays that have spread inside the holding member 7 are emitted from the surface of the holding member 7 to the outside and are irradiated onto the surface of the air filter medium 6. For example, the ultraviolet rays emitted from the opposing surface 7d of the holding member 7 are irradiated to the surface of the air filter medium 6. Ultraviolet rays are also emitted from the surface of the holding member 7 perpendicular to the X axis, and these ultraviolet rays are irradiated to the surface of the air filter medium 6. The holding member 7 may have a surface perpendicular to the X axis formed with the same irregularities as the opposing surface 7 h.
The broken line in fig. 8 shows an example of the range in which the ultraviolet light reaches the surface of the air filter medium 6. The ultraviolet rays reach only the region of the surface of the air filter medium 6 that faces the facing surface 7d of the holding member 7. By emitting ultraviolet rays from the surface of the holding member 7 perpendicular to the X axis as well, the ultraviolet rays reach the surface of the air filter medium 6 at a position away from the holding member 7. As described above, according to the present embodiment, effects similar to those of embodiment 1 can be obtained.
The material forming the holding member 7 in embodiment 4 has ultraviolet light transmittance for transmitting at least a part of the wavelength of the ultraviolet light emitted from the ultraviolet light source 5. The material forming the holding member 7 may be, for example, an acrylic resin, a styrene resin, or the like. The holding member 7 in embodiment 4 may not be made of the material containing the light diffusing agent as in embodiment 1. In embodiment 4, the ultraviolet rays may not be diffused inside the holding member 7 as long as the ultraviolet rays are diffused on the surface of the holding member 7.
As described above, the embodiments of the present invention have been described, and the air cleaning device and the dust collecting filter of the present invention can be applied not only to the air cleaning device such as the air cleaner 1 described in the embodiments 1 and 2, but also to an air cleaning device integrally incorporated in an air conditioner, an air cleaning device for cleaning exhaust gas of an electric vacuum cleaner, and the like.
Description of the reference numerals
1 air cleaner, 2 frame, 2a suction inlet, 2b blow-out outlet, 2c suction inlet, 3 dust collecting filter, 3a first area, 3b second area, 4 blower, 5 ultraviolet light source, 6 air filter filtering material, 6a first layer, 6b second layer, 7 holding member, 7a base, 7b projecting part, 7c first surface, 7d opposite surface, 7e particle, 7f resin material, 7g incidence surface, 7h opposite surface, 8 ultraviolet reflecting layer
Claims (11)
1. An air purification device is provided with:
a dust collecting filter; and
a source of ultraviolet light,
the dust collection filter is provided with: an air filter medium having a pleated shape; and a holding member that holds the shape of the air filter medium,
the holding member includes: a base portion extending in a direction intersecting a longitudinal direction of the wrinkle-shaped fold; and a protruding portion protruding from the base portion toward a valley portion of the wrinkle shape,
the ultraviolet light source irradiates ultraviolet light to the holding member,
at least a part of the holding member diffuses and transmits ultraviolet rays.
2. The air purification apparatus according to claim 1, wherein the protruding portion of the holding member diffuses and transmits ultraviolet rays.
3. The air purification apparatus according to claim 1 or 2, wherein the base portion of the holding member diffuses and transmits ultraviolet rays.
4. The air purification apparatus according to claim 1 or 2, wherein at least a part of the holding member is made of a resin material in which particles serving as a light diffusing agent are dispersed.
5. The air purification apparatus according to claim 1 or 2, wherein an unevenness for diffusing ultraviolet rays is formed on at least a part of a surface of the holding member.
6. The air purification apparatus according to claim 1 or 2,
a plurality of the ultraviolet light sources are provided,
when the dust collecting filter is divided into a first region and a second region in which the flow rate of air passing through the dust collecting filter is lower than that of the first region, a first arrangement density obtained by dividing the number of the ultraviolet light sources arranged in the first region by the area of the first region is higher than a second arrangement density obtained by dividing the number of the ultraviolet light sources arranged in the second region by the area of the second region.
7. The air purification apparatus according to claim 1 or 2,
the base portion of the holding member has a first surface as a surface on the opposite side of the protruding portion,
the ultraviolet light source irradiates ultraviolet rays to the first surface.
8. The air purification apparatus according to claim 1 or 2, wherein the ultraviolet light source irradiates an end portion in a longitudinal direction of the base portion of the holding member with ultraviolet light.
9. The air cleaning device according to claim 1 or 2, wherein the air filter medium is provided with a deodorant.
10. The air purification device according to claim 1 or 2, wherein an ultraviolet reflecting layer provided on a part of a surface of the holding member is provided.
11. A dust collecting filter is provided with:
an air filter media having a pleated shape; and
a holding member for holding the shape of the air filter medium,
the holding member includes: a base portion extending in a direction intersecting a longitudinal direction of the wrinkle-shaped fold; and a protruding portion protruding from the base portion toward a valley portion of the wrinkle shape,
at least a part of the holding member diffuses and transmits ultraviolet rays.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016144418 | 2016-07-22 | ||
| JP2016-144418 | 2016-07-22 | ||
| PCT/JP2017/008549 WO2018016116A1 (en) | 2016-07-22 | 2017-03-03 | Air cleaning device and dust collecting filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109477652A CN109477652A (en) | 2019-03-15 |
| CN109477652B true CN109477652B (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780036373.6A Active CN109477652B (en) | 2016-07-22 | 2017-03-03 | Air cleaning device and dust collecting filter |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6569813B2 (en) |
| CN (1) | CN109477652B (en) |
| WO (1) | WO2018016116A1 (en) |
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| CN108452363A (en) * | 2018-06-27 | 2018-08-28 | 深圳市雷凌广通技术研发有限公司 | A kind of efficient ultraviolet air sterilization chlorination equipment |
| JP2020043920A (en) * | 2018-09-14 | 2020-03-26 | 日本無機株式会社 | Air cleaner and air cleaning method |
| KR102556384B1 (en) * | 2018-12-20 | 2023-07-14 | 주식회사 엘지화학 | Light guide plate having air permability and air purifying filter including the same |
| JP7176948B2 (en) * | 2018-12-28 | 2022-11-22 | サンスター技研株式会社 | air purifier |
| JP7312019B2 (en) * | 2019-05-27 | 2023-07-20 | 日機装株式会社 | Fluid treatment equipment |
| KR102266699B1 (en) * | 2020-12-28 | 2021-06-18 | 방승섭 | Photocatalytic sterilizatio module |
| JP7168880B2 (en) * | 2021-02-18 | 2022-11-10 | ダイキン工業株式会社 | air conditioner |
| JP7382665B1 (en) | 2022-05-17 | 2023-11-17 | 株式会社 リブレックス | air purifying filter |
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| JPH0618018U (en) * | 1992-08-11 | 1994-03-08 | 株式会社カンセイ | Air purifier filter structure |
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| JP2003070885A (en) * | 2001-08-31 | 2003-03-11 | Zexel Valeo Climate Control Corp | Photocatalytic deodorizer |
| JP2003190269A (en) * | 2001-12-25 | 2003-07-08 | Toyota Auto Body Co Ltd | Air cleaner |
| AU2003234825A1 (en) * | 2002-05-20 | 2003-12-02 | Toyo Boseki Kabushiki Kaisha | Wrought fiber sheet and filter unit |
| JP4257613B2 (en) * | 2002-05-20 | 2009-04-22 | 東洋紡績株式会社 | Molded fibrous sheet and filter unit |
| FR2868019A1 (en) * | 2004-03-29 | 2005-09-30 | Valeo Climatisation Sa | Photocatalytic air purifier for motor vehicle heating/ventilation or air conditioning system has irradiating light source associated with generator and photophore |
| JP2007284012A (en) * | 2006-04-20 | 2007-11-01 | Sanden Corp | Filter |
| JP4699340B2 (en) * | 2006-11-16 | 2011-06-08 | 日東電工株式会社 | Filter unit |
| US8409336B2 (en) * | 2009-09-01 | 2013-04-02 | Hunter Fan Company | Air filter system |
| FR2962348B1 (en) * | 2010-07-12 | 2012-09-07 | Ind Du Ponant L | MICROBICIDAL FILTER AND FILTER CARTRIDGE INCORPORATING SUCH A FILTER |
| JP5889136B2 (en) * | 2012-07-13 | 2016-03-22 | 荏原実業株式会社 | Air purifier with filter sterilization function |
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- 2017-03-03 CN CN201780036373.6A patent/CN109477652B/en active Active
- 2017-03-03 JP JP2018528396A patent/JP6569813B2/en active Active
- 2017-03-03 WO PCT/JP2017/008549 patent/WO2018016116A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN109477652A (en) | 2019-03-15 |
| JPWO2018016116A1 (en) | 2018-11-29 |
| JP6569813B2 (en) | 2019-09-04 |
| WO2018016116A1 (en) | 2018-01-25 |
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