JP2000317231A - Air purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep pressure drop in low and to prevent the increase of the pressure drop while keeping the air purifying capacity of an air purifier. SOLUTION: A filter of the air purifier has a constitution provided with an adhesive soln. holding filer 1 having many through-holes, flat planes 2 and 3 having many through-holes arranged opposite to the upstream side and the downstream side of the adhesive soln. holding filer 1 so that the through-holes do not pilled with a position of the through-hole of the adhesive soln. holding filter 1, a soln. reservoir 7 storing the adhesive soln. and provided so that the adhesive soln. holding filter is brought into contact with the adhesive soln. and the adhesive soln. is allowed to move to the adhesive soln. holding filter and moveable scrapers 31 and 32 arranged at the opposite position facing each other with interposing the adhesive soln. holding filter. The increase of the pressure drop is prevented over a long period of time with low pressure drop, the adherence of the filter is always maintained and the dust is continuously captured by sticking the dust on the adhesive soln. holding filter 1, forming a new adhesive surface by penetrating the adhesive soln. to the dust and letting the dust selectively heap at a specified place.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air purifier. More specifically, for example, an air purifier is installed in an office or home to remove dust contained in room air, an air purifier attached to an air conditioner, and an air inlet of a polymer electrolyte fuel cell for an electric vehicle. The present invention relates to an air purifier and the like to be used.

[0002]

2. Description of the Related Art In a conventional air purifier, a method of forcibly passing air through a porous filter made of paper using a fan and trapping dust with the filter is generally used. FIG. 8 is a schematic side view of a general air purifier, in which 22 is a paper filter, 23 is a pre-filter, 24 is a front panel, 25 is a back panel, 26 is a fan, and 27 is a protective plate. . The pre-filter 23 is a coarse filter made of plastic and can be removed and cleaned with a vacuum cleaner or the like. The paper filter 22 is a fine-grained filter that is disposable. In some cases, when the pressure loss increases, a sensor is activated to notify the time of replacement.
The front panel 24 and the back panel 25 protect the filters, and the protection plate 27 prevents the fingers from being pinched by the fan 26 and prevents the fan 26 from being mechanically damaged.

In such a conventional air purifier, dust passes through the filter unless the size of the filter is smaller than that of the dust to be removed. Therefore, the size of the filter is fine so as not to allow the dust to pass. Conventional air purifiers that use fine filters can remove even small dust, but when the dust is clogged and the pressure loss increases, the amount of air passing gradually decreases when the fan capacity is low. As a result, there is a problem that the amount of clean air is reduced.

The above conventional filter is not initially clogged with dust, but when used, the dust is clogged and the clogging becomes finer, so that the dust removing effect is enhanced, and the air purifying effect is improved over time. However, there was a problem that the value greatly changed. In particular, when the above-described conventional air purifier is used as an air purifier installed in front of an air compressor of a polymer electrolyte fuel cell used as a power source of an electric vehicle, a change in pressure loss causes an increase in air intake. There is a problem that the control is complicated due to the change. Further, if the pressure loss increases due to clogging of the filter, there is another problem that it is impossible to take in the amount of air required for consumption by the fuel cell stack.

Japanese Patent Application Laid-Open No. 56-37019 discloses a filter unit capable of realizing an air purifier that has a small change in pressure loss even during long-term use and does not cause a decrease in air intake due to the increase in pressure loss. ing.
The filter unit described in this publication is configured such that a plurality of filter elements having a large number of holes are formed in a space of several mm to several tens cm by making the positions of the holes of the adjacent filter elements coincide with each other so that no through holes are formed. It is a filter unit that is arranged through the filter unit, and the size of the hole is gradually reduced from the suction side to the discharge side, so that pressure loss does not increase even when used for a long time. Dust can be collected efficiently by coating.

However, in this filter unit, when the dust layer trapped in the filter element becomes thicker due to long-term use, the dust trapped by the air flowing between the filter elements is separated and flows to the discharge side.
The air purifier using this filter has a problem that the air cleaning effect is reduced. Applying an adhesive or adsorbent to the surface of the filter element improves the dust-trapping performance, but the adhesion of the dust immediately loses the adhesiveness of the surface, which also reduces the air cleaning effect. there were.

[0007] Japanese Patent Laid-Open No. Hei 7-1995 discloses a filter capable of realizing an air purifier that has a small change in pressure loss even when used for a long period of time, does not cause a decrease in the amount of air taken in due to an increase in pressure loss, and at the same time maintains dust capturing performance. No. 332180. The filter described in this publication,
A gas filter that does not increase the passage resistance of the gas flow that collides the gas flow with the sticky component by refracting or swirling the gas flow and has no increase in the passage resistance of the gas flow. Improves performance. However, this filter can no longer collect dust if the tackiness of the sticky parts is lost.Therefore, air purifiers using this filter have to replace filters that have lost stickiness in order. there were.

[0008]

The above-mentioned conventional air purifier maintains the dust collecting ability even when used for a long period of time, but has a drawback that the pressure loss increases due to clogging of the filter. An air purifier that has no pressure loss even during long-term use has the drawback that the dust-collecting capacity is reduced due to the loss of the stickiness of the filter element.To maintain the dust-collecting capacity, the filter must be replaced. There was a disadvantage that it did not.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems.
Further, the present invention provides an air purifier that does not increase the pressure loss due to clogging of the filter even during long-term use, and does not reduce the dust collecting ability due to loss of the stickiness of the filter.

[0010]

According to a first aspect of the present invention, there is provided an air purifier having an adhesive liquid holding filter having a large number of through holes, and having a large number of through holes. The adhesive liquid holding filter is stored so as not to overlap with the position of the through-hole of the filter, and a flat plate and an adhesive liquid arranged opposite to the upstream side of the adhesive liquid holding filter are contacted with the adhesive liquid. It is provided with a liquid reservoir installed so that the adhesive liquid is moved to the adhesive liquid holding filter.

The air purifier of the second configuration according to the present invention is the air purifier of the first configuration, wherein the air purifier has a large number of through-holes, and the through-holes correspond to the positions of the through-holes of the adhesive liquid holding filter. A flat plate is provided so as not to be overlapped and arranged on the downstream side of the adhesive liquid holding filter.

An air purifier having a third configuration according to the present invention is the air purifier having the first and second configurations described above.
Two or more adhesive liquid holding filters are arranged with a space in such a manner that the through holes of the opposing adhesive liquid holding filters do not overlap.

According to a fourth aspect of the present invention, there is provided an air purifier having the above-described first to third configurations.
The upstream flat plate is composed of an adhesive liquid holding filter.

According to a fifth aspect of the present invention, there is provided an air purifier having the above-described first to fourth configurations.
The adhesive liquid holding filter is provided with a wick.

According to a sixth aspect of the present invention, there is provided an air purifier having the above-described first to fifth aspects.
The distance between the opposing flat plate and the adhesive liquid holding filter or the distance between the opposing adhesive liquid holding filters is 2 mm or more and 1
0 mm or less, and the aperture ratio of the flat plate and the adhesive liquid holding filter is configured to be 10% or more and 50% or less.

An air purifier having a seventh configuration according to the present invention is the air purifier having the first to sixth configurations described above.
The diameter of the through hole of the flat plate is twice or more the distance between the flat plate and the opposing adhesive liquid holding filter, and the diameter of the through hole of the adhesive liquid holding filter is the distance between the opposing adhesive liquid holding filters or the above. The distance between the adhesive liquid holding filter and the opposing flat plate is twice or more the narrower distance.

According to an eighth aspect of the present invention, there is provided an air purifier having the above-mentioned first to seventh configurations.
It is provided with a movable scraper for scraping dust adhered to the surface of the adhesive liquid holding filter.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention and its operation will be described below with reference to the embodiments shown in FIGS. The same or corresponding parts as those of the conventional device are denoted by the same reference numerals.

Embodiment 1 FIG. 1 is a schematic side view showing a configuration of a filter in an air purifier according to Embodiment 1 of the present invention, and FIG. 2 is a schematic front view. In the drawing, 1 is an adhesive liquid holding filter having a large number of through holes (hereinafter referred to as an adhesive liquid holding filter), and 2 is a flat plate having a large number of through holes upstream of the adhesive liquid holding filter (hereinafter referred to as an upstream flat plate). Reference numeral 3 denotes a flat plate having a number of through holes downstream of the adhesive liquid holding filter (hereinafter referred to as a downstream flat plate), 4 denotes a filter through hole, 5 denotes an upstream flat plate through hole, and 6 denotes a downstream flat plate through hole. , 7 is a liquid reservoir, 8 is a wick, 31 is a filter surface scraper, 32 is a filter backside scraper, 33 is a scraper guide, 34 is a downside surface scraper, and 35 is a downside backside scraper. FIG. 1 shows a state where the scraper is on the upper side, and FIG. 2 shows a state where the scraper is lowered on the lower side. In FIG. 2, the illustration of the scraper guide is omitted for simplicity.

The upstream flat plate 2 and the downstream flat plate 3 made of metal have holes at the same position. When only these two plates are overlapped, the holes penetrate. The shape of these plates is similar to punched metal, but the diameter of the holes is 10 mm
And the distance between the edge of the hole and the edge of the hole is 1 cm apart. Therefore, the aperture ratio of each flat plate is about 20%. In the first embodiment, metal is used for the upstream flat plate 2 and the downstream flat plate 3.
P, ceramic and the like can also be used, and the material is not limited at all. In the first embodiment, there is a hole at the same position on the upstream flat plate 2 and the downstream flat plate 3. However, if the hole does not overlap with the filter through hole 4, the positions of the holes on the upstream flat plate 2 and the downstream flat plate 3 are different. Is also good.

The adhesive liquid holding filter 1 has a structure in which three strong papers are laminated, and the central paper has an average pore diameter of 10%.
0 μm, and the two papers on the surface have an average pore diameter of 50 μm.
m. The paper having an average pore diameter of 100 μm at the center is immersed in the adhesive liquid stored in the liquid reservoir 7 as a wick 8 to form a liquid path for freely moving the adhesive liquid to the adhesive liquid holding filter 1. It has the function of quickly moving the adhesive liquid to the surface to which dust has adhered and making the surface to which dust has adhered a new adhesive surface. In the pressure-sensitive adhesive liquid holding filter 1, a large number of holes having a diameter of 10 mm are formed at an interval of 1 cm between the edges of the holes. The space between the upstream flat plate 2 and the adhesive liquid holding filter 1 and the space between the adhesive liquid holding filter 1 and the downstream flat plate 3 are 3 mm.

In the first embodiment, paper is used for the adhesive liquid holding filter 1. Normally, paper is made of fiber and therefore has air permeability, but since it is impregnated with an adhesive liquid, the adhesive liquid holding filter 1 in this embodiment has almost no air permeability other than through holes. However, the pressure-sensitive adhesive liquid holding filter 1 of the present invention does not particularly require air permeability other than the through-hole, and is required to have excellent pressure-sensitive adhesive liquid holding ability having a dust capturing action.

As the adhesive liquid holding filter 1, one other than paper can be used. When a filter made of foamed plastic, such as that used in commercial air conditioners, is used, air permeability is maintained, but the retention of adhesive liquid is reduced. It is desirable to use one having good properties. Also, aluminum foam metal, carbon cloth, and various synthetic papers can be used, but those having excellent wettability to an adhesive liquid are also preferable.

The scraper is made of plastic. In FIG. 1, the adhesive liquid holding filter 1 is disposed facing the front and back of the adhesive liquid holding filter 1 from the top to the bottom, that is, the filter surface scraper 31 reaches the position 34, the filter back surface scraper 32 reaches the position 35, and the adhesive liquid holding filter 1 And rub it across. At that time, the adhesive liquid holding filter 1 is wrung and the attached dust is scraped off.

The scraper guide 33 is a guide for removing dust rubbed from the front and back of the adhesive liquid holding filter 1, and is made of the same plastic as the scraper. Although not shown, the surface of the scraper guide 33 has a saw-toothed shape parallel to the blade of the scraper. . The scraper guide 33 also functions to separate the liquid reservoir 7 from the scraper and prevent the adhesive liquid in the liquid reservoir from being contaminated by dust rubbed off.

The scraper moves so as to sandwich the front and back of the adhesive liquid holding filter 1, but after descending, spreads slightly left and right on the scraper guide 33. At that time,
Dust rubbed off from the filter by the saw teeth machined on the scraper guide surface is scraped off. The scraper may be moved manually during periodic inspections, etc.
It may be performed automatically on a regular basis.

In the first embodiment, a commercially available synthetic glue is used as the adhesive liquid. Synthetic glue is obtained by adding a preservative to an aqueous solution of polyvinyl alcohol. In addition, as the adhesive liquid, carboxymethylcellulose sodium salt, polyethylene oxide, and the like, which are often used as a thickener, can be used. Further, silicone, glycerin, various fats and oils, and solvents having a high boiling point can also be used. Further, as the adhesive liquid, polyvinyl acetate and its copolymer, polychloroprene, nitrile rubber, styrene / butadiene, polyurethane, polyamide, polyester and the like can be used.

In the first embodiment, water is supplied to the liquid reservoir 7 at regular intervals. When an aqueous adhesive solution is used,
A function as a humidifier can also be added. When humidification is not required or when it is difficult to supply water, an oil-based adhesive liquid or a high-boiling organic solvent may be used. further,
If necessary, the aqueous solution-based adhesive liquid holding filter and the organic solvent-based adhesive liquid holding filter can be exchanged for use. In the case of an air purifier used to supply air to a polymer electrolyte fuel cell for an electric vehicle, the air treatment amount is large and there are many large dust particles such as sand, so it is resistant to drying.
Oil-based adhesive liquids such as silicone with strong adhesiveness are suitable.

FIG. 3 is a schematic side view showing the air flow on the upstream side of the adhesive liquid holding filter in the air purifier of the first embodiment, and FIG. 4 is a schematic side view showing the air flow on the downstream side. FIG. 9 is the flow of air passing through the upstream flat plate, 10 is the flow of air in the gap between the upstream flat plate and the adhesive liquid holding filter, 11 is the air flow of the filter through hole, and 12 is the surface of the adhesive liquid holding filter. Dust,
13 is an air flow in the gap between the downstream flat plate and the adhesive liquid holding filter, 14 is an air flow toward the through hole of the downstream flat plate, and 15 is dust adhering to the back surface of the adhesive liquid holding filter.

In order for the air from the through-hole 5 of the upstream flat plate to go to the through-hole 4 of the filter, it must bend at a right angle. Contact Therefore, large dust is trapped by the adhesive filter when the air passes through the upstream flat plate 2 and collides with the filter.
The adhesive liquid holding filter 1 of the air purifier of the present invention has a liquid reservoir 7.
And the dust trapped in the sticky liquid holding filter 1 is impregnated with the sticky liquid to form a new sticky surface, so that the dust capturing ability is not reduced and the dust is gradually deposited. In addition, after the air collides with the front of the adhesive liquid holding filter 1, the small dust contacts the adhesive liquid holding filter 1 while flowing in the lateral direction and is trapped, and further, while the air passes through the filter hole and flows on the side surface. But I'm trapped.

When an electric vehicle is traveling on a road,
Dust mixed into the air supplied to the polymer electrolyte fuel cell used in the electric vehicle is often sandy, and if supplied to the fuel cell as it is, it becomes a narrow air flow path and breaks down. However, the filter in the air purifier according to the first embodiment can trap sand contained in the air by colliding with the adhesive liquid holding filter 1 when the air flow bends at right angles many times. In addition, since dust and sand have the ability to strongly retain the adhesive liquid between the particles, the adhesive liquid quickly penetrates, a new adhesive surface is formed, and the filter retains the dust collection ability for a long time. Becomes

FIG. 5 shows the change over time in the pressure loss and the amount of dust attached between the air purifier of the first embodiment and the conventional air purifier. Reference numeral 16 denotes the pressure loss of the air purifier of the first embodiment. , 17 is a time-dependent curve of pressure loss in the conventional air purifier, 18 is a time-dependent curve of the amount of dust adhering to the filter in the air purifier of Embodiment 1, and 19 is a curve of the conventional air purifier. It is a time-dependent change curve of the amount of dust adhering to a filter.

In the conventional air purifier, the pressure loss gradually increases, and if the output of the fan is constant, the air throughput decreases over time. When a large amount of air needs to be secured, such an air purifier is extremely disadvantageous. Also,
With conventional air purifiers, much dust passes through the filter eyes at the beginning, but at the end it becomes trapped by the clogged filter, which is much finer than originally expected. In addition, the dust removal characteristics change.

On the other hand, in the air purifier of the first embodiment, although the opening ratio of the filter is 20%, which is smaller than that of a normal air filter, the initial pressure loss is large, but the value is constant. Does not increase. This is because the through hole through which the air passes is large, so that it is not blocked by dust, and even if the dust adheres to the adhesive liquid holding filter 1 in a large amount, the flow path of the air is sufficiently secured. , To prevent clogging. The adhesion of the dust reduces the adhesiveness of the filter body, but the porous part of the dust is replenished with the adhesive liquid that is sucked up from the liquid reservoir by the pore suction force. Exhibits the function as a retention filter. Therefore, even if dust accumulates on the filter, the ability of capturing the dust does not deteriorate at all. In addition, the place where dust accumulates is a place where air is dispersed in all directions, does not hinder the flow of air current, and the pressure loss hardly increases even if the space is somewhat narrowed.

Further, if the dust adhering and accumulating on a specific place is periodically removed by the scraper, the scraper can be used for several years. In the case of a normal filter, dust is uniformly deposited, and it is difficult to efficiently remove the dust using a scraper. However, in the filter of the air purifier of the present invention, the dust accumulation is hemispherical at a specific location, so that the dust can be easily scraped off.

In the first embodiment, the distance between the upstream flat plate 2 and the adhesive liquid holding filter 1 and the distance between the adhesive liquid holding filter 1 and the downstream flat plate 3 are 3 mm. However, the present invention is not limited to this. Is preferably 2 mm or more and 10 mm or less. If the distance is less than 2 mm, the pressure loss when dust accumulates increases, and if it exceeds 10 mm, the positions on which the dust accumulates are dispersed and cannot accumulate at specific locations.

In the first embodiment, the upstream flat plate 2,
The opening ratio of the adhesive liquid holding filter 1 and the downstream flat plate 3 was set to 20%, respectively, but is not limited to this, and the opening ratio is preferably 10% or more and 50% or less. If the opening ratio is less than 10%, the pressure loss becomes too large. When the opening ratio exceeds 50%, the flow path of the air that has passed through the through-hole 5 of the upstream flat plate to the through-hole 4 of the adhesive holding filter and the downstream flat plate of the air that has passed through the through-hole 4 of the adhesive holding filter. The flow path to the through hole 6 is shortened, and dust is less likely to be trapped in the adhesive liquid holding filter 1.

In the first embodiment, the upstream flat plate 2,
Although the diameter of the through-hole of the adhesive liquid holding filter 1 and the downstream flat plate 3 was set to 10 mm, the diameter of the through-hole 5 of the upstream flat plate was not limited to 10 mm. The diameter of the through-hole 4 of the adhesive liquid holding filter is more than twice the distance between the upstream flat plate 2 and the adhesive liquid holding filter 1 or the distance between the adhesive liquid holding filter 1 and the downstream flat plate 3. Closely spaced 2
It is preferable that the diameter of the through-hole 6 of the downstream flat plate is twice or more the distance between the adhesive liquid holding filter 1 and the downstream flat plate 3. If the diameter of each through hole is less than twice the distance, the pressure loss due to accumulation of dust increases.

Further, in the first embodiment, the central part of a three-ply paper filter is extended as a liquid path or a wick that comes into contact with the adhesive liquid stored in the liquid reservoir 7 and moves the adhesive liquid freely. However, the present invention is not limited to this, and may be, for example, a surface portion of a three-ply paper filter. Further, the liquid path or the wick may be directly connected to a specific place where dust is accumulated in a branch shape. Such a liquid path or wick is easily formed by applying a porous body such as carbon fiber or alumina using a known printing technique. In addition, it is formed on the center portion and the surface of the filter by using a watermarking technique of sandwiching a slit-processed paper.

Embodiment 2 FIG. 6 is a schematic side view showing a configuration of a filter in an air purifier according to Embodiment 2, in which 20 is a second adhesive liquid holding filter, 21 is a through-hole of the second adhesive liquid holding filter, and 36 is It is a double-sided scraper. In the second embodiment, the distance between the first adhesive liquid holding filter 1 and the second adhesive liquid holding filter 20 is 3 mm,
1 was 10 mm in diameter. Also, the upstream flat plate 2 and the first
The through-hole of the adhesive liquid holding filter 1, the through-hole of the first adhesive liquid holding filter 1 and the second adhesive liquid holding filter 20, and the through-hole of the second adhesive liquid holding filter 20 and the downstream flat plate 3 were configured not to overlap. . A double-sided scraper 36 was disposed in contact with the back surface of the first adhesive liquid holding filter 1 and the surface of the second adhesive liquid holding filter 20. Others are the same as the first embodiment.

The presence of the second adhesive liquid holding filter 20 increases the number of times the air flow is folded at a right angle.
That fine dust is also trapped. A place where air purification was performed on the side of a road using the air purifier of the second embodiment,
With a small pressure difference, almost all of the dust, sand and hydrocarbons were trapped. In particular, the small dust and hydrocarbons adhered to the second adhesive liquid holding filter 20 in a large amount.

The number of the adhesive liquid holding filters was further increased to three,
The more four, the more complete cleaning is possible,
In the case of purifying air in a room or a factory, the same air circulates, so that it is not always necessary to purify all at once, and even a single adhesive liquid holding filter functions sufficiently. Further, by removing the dust accumulated by the scraper, the air flow path is widened, so that it can be operated for a long time without increasing the pressure loss. Even if the number of adhesive liquid holding filters increases, if the double-sided scraper 36 and the front and back scrapers are simultaneously moved, all the adhesive liquid holding filters can be simultaneously squeezed to remove dust.

In the second embodiment, the distance between the first adhesive liquid holding filter 1 and the second adhesive liquid holding filter 20 is 3 mm.
However, the present invention is not limited to this, and the interval is preferably 2 mm or more and 10 mm or less. The above interval is 2m
If it is less than m, the pressure loss when dust accumulates will increase, and if it exceeds 10 mm, the dust accumulation positions will be dispersed and will not accumulate at specific locations. Further, in the second embodiment, the aperture ratio of the second adhesive liquid holding filter 20 is set to 20%, but is not limited to this, and the aperture ratio is preferably 10% or more and 50% or less. If the opening ratio is less than 10%, the pressure loss becomes too large. If the opening ratio exceeds 50%, dust is less likely to be trapped in the second adhesive liquid holding filter 20. Also,
In the second embodiment, the diameter of the through-hole 21 of the second adhesive liquid holding filter is set to 10 mm. However, the present invention is not limited to this, and the first adhesive liquid holding filter 1 and the second adhesive liquid holding filter 20 It is preferable that the distance is at least twice as narrow as the distance between the second adhesive liquid holding filter 20 and the downstream flat plate 3. If the diameter is less than twice the distance, the pressure loss when dust accumulates increases.

Embodiment 3 FIG. FIG. 7 is a schematic side view illustrating a configuration of a filter in an air purifier according to the third embodiment. In the third embodiment, the distance between the upstream flat plate 2 and the adhesive liquid holding filter 1 is 3 mm, the diameter of the through hole between the upstream flat plate 2 and the adhesive liquid holding filter 1 is 10 mm, and the upstream flat plate 2 and the adhesive liquid holding filter 1 The aperture ratio of the filter 1 was set to 15%. A surface scraper 31 was disposed on the upstream surface of the adhesive liquid holding filter 1. Others are the same as the first embodiment.

In the third embodiment, the number of components on the air flow path is reduced and the number of times the air flow is folded at a right angle is reduced by forming the upstream flat plate 2 and the adhesive liquid holding filter 1. The pressure loss in the initial stage is small, and the value of the pressure loss remains small and does not increase even during long-term use. In the third embodiment, since the number of parts constituting the filter is small and the pressure loss is small, it is possible to realize an air purifier which is small and can purify a large amount of air.

In the third embodiment, the distance between the upstream flat plate 2 and the adhesive liquid holding filter 1 is set to 3 mm. However, the present invention is not limited to this.
m or less is preferable. If the distance is less than 2 mm, the pressure loss when dust accumulates increases, and 10 m
When the distance exceeds m, the dust accumulation positions are dispersed and cannot be accumulated at a specific location. In the third embodiment, the opening ratio of the upstream flat plate 2 and the adhesive liquid holding filter 1 is set to 15%. However, the present invention is not limited to this.
0% or more and 50% or less are preferable. The aperture ratio is 10%
If it is less than 1, the pressure loss becomes large, and the above-mentioned opening ratio becomes 5
If it exceeds 0%, it becomes difficult for dust to be trapped by the adhesive liquid holding filter. In the third embodiment, the diameter of the through-hole of the upstream flat plate 2 and the adhesive liquid holding filter 1 is set to 10 m.
m, but is not limited thereto, and is preferably at least twice the distance between the upstream flat plate 2 and the adhesive liquid holding filter 1. If the diameter is less than twice the interval, the pressure loss due to accumulation of dust increases.

In the first to third embodiments, the case where circular through holes are provided in the upstream flat plate, the downstream flat plate and the adhesive liquid holding filter has been described. However, the through holes may be elliptical, triangular or square. In that case, the diameter may be read as a diagonal line or the maximum length.

[0048]

According to the first aspect of the present invention, there is provided an air purifier having an adhesive liquid holding filter having a large number of through holes, and having a large number of through holes. The flat plate and the pressure-sensitive adhesive liquid which are disposed so as not to overlap with the position of the pressure-sensitive adhesive liquid holding filter are stored and the pressure-sensitive adhesive liquid holding filter is brought into contact with the pressure-sensitive adhesive liquid. It is equipped with a liquid reservoir installed so that the adhesive liquid can be moved to a low pressure loss, preventing the pressure loss from increasing over a long period of time and constantly maintaining the adhesiveness of the filter, and continuously Dust can be captured.

The air purifier of the second configuration according to the present invention is the air purifier of the first configuration, wherein the air purifier has a large number of through-holes, and the through-holes correspond to the positions of the through-holes of the adhesive liquid holding filter. It is provided with a flat plate which is disposed so as not to overlap and is opposed to the downstream side of the pressure-sensitive adhesive liquid holding filter. Can be constantly maintained and dust can be continuously captured.

The air purifier of the third configuration according to the present invention is the air purifier of the first and second configurations,
Two or more adhesive liquid holding filters are spaced apart so that the through-holes of the opposing adhesive liquid holding filters do not overlap each other. Prevention and always maintain the adhesiveness of the filter, and can continuously capture dust.

The air purifier of the fourth configuration according to the present invention is the air purifier of the first to third configurations,
The upstream flat plate is composed of an adhesive liquid holding filter, with a low pressure loss, preventing the pressure loss from increasing for a long time and always maintaining the filter's adhesiveness,
Dust can be continuously captured.

The air purifier of the fifth configuration according to the present invention is the air purifier of the first to fourth configurations,
The adhesive liquid holding filter has a wick,
With a low pressure loss, it is possible to prevent an increase in the pressure loss over a long period of time, maintain the adhesiveness of the filter at all times, and continuously capture dust.

According to a sixth aspect of the present invention, there is provided an air purifier having the above-mentioned first to fifth aspects.
The distance between the opposing flat plate and the adhesive liquid holding filter or the distance between the opposing adhesive liquid holding filters is 2 mm or more and 1
0 mm or less, and the opening ratio of the flat plate and the opening ratio of the pressure-sensitive adhesive liquid holding filter are configured to be 10% or more and 50% or less. Prevention and always maintain the adhesiveness of the filter, and can continuously capture dust.

The air purifier of the seventh configuration according to the present invention is the air purifier of the first to sixth configurations,
The diameter of the through hole of the flat plate is twice or more the distance between the flat plate and the opposing adhesive liquid holding filter, and the diameter of the through hole of the adhesive liquid holding filter is the distance between the opposing adhesive liquid holding filters or the above. It is configured to be at least twice the narrower interval among the intervals between the adhesive liquid holding filter and the opposing flat plate, with a low pressure loss, preventing the pressure loss from increasing over a long period of time, and Adhesiveness is always maintained and dust can be continuously captured.

An air purifier of an eighth configuration according to the present invention is the air purifier of the first to seventh configurations,
It is equipped with a movable scraper that scrapes dust adhered to the surface of the adhesive liquid holding filter, with a low pressure loss, preventing an increase in pressure loss over a long period of time and constantly maintaining the filter's adhesiveness, Dust can be continuously captured.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a configuration of a filter in an air purifier according to Embodiment 1 of the present invention.

FIG. 2 is a schematic front view showing a configuration of a filter in the air purifier according to Embodiment 1 of the present invention.

FIG. 3 is a schematic side view showing the flow of air on the upstream side of the adhesive liquid holding filter in the air purifier according to Embodiment 1 of the present invention.

FIG. 4 is a schematic side view showing the flow of air downstream of the adhesive liquid holding filter in the air purifier according to Embodiment 1 of the present invention.

FIG. 5 is a diagram showing changes over time in pressure loss and the amount of dust attached between the air purifier according to Embodiment 1 of the present invention and a conventional air purifier.

FIG. 6 is a schematic side view showing a configuration of a filter in an air purifier according to Embodiment 2 of the present invention.

FIG. 7 is a schematic side view showing a configuration of a filter in an air purifier according to Embodiment 3 of the present invention.

FIG. 8 is a schematic side view showing the configuration of a conventional air purifier.

[Explanation of symbols]

1 adhesive liquid holding filter, 2 upstream flat plate, 3 downstream flat plate, 4 filter through hole, 5 upstream flat plate through hole, 6 downstream flat plate through hole, 7 liquid reservoir, 8 wick,
9 air flow through the upstream plate through-hole; 10 air flow in the gap between the upstream plate and the adhesive liquid holding filter; 11 air flow in the filter hole; 12 dust adhering to the surface of the adhesive liquid holding filter; 13 air flow in the gap between the downstream flat plate and the adhesive liquid holding filter, 14 air flow toward the downstream flat plate through-hole, 15 dust attached to the back surface of the adhesive liquid holding filter, 16 air cleaner according to the first embodiment Time change curve of pressure loss at 17; time change curve of pressure loss at conventional air purifier; 18
Curve with time of the amount of dust attached to the filter in the air purifier of Embodiment 1, 19 Curve with time of the amount of dust attached to the filter in the conventional air cleaner, 2
0 second adhesive liquid holding filter, 21 through-hole of second adhesive liquid holding filter, 22 paper filter, 23 prefilter, 24 front panel, 25 back panel, 26 fan, 27 protection plate, 31 filter surface scraper, 32 filter back surface Scraper, 33
Scraper guide, 34, surface scraper descending down,
35 Backside scraper descended, 36 Double-sided scraper

Claims (8)

[Claims] 1. An adhesive liquid holding filter having a large number of through-holes, a pressure-sensitive adhesive liquid holding filter having a large number of through-holes, wherein the through-holes do not overlap positions of the through-holes of the adhesive liquid holding filter. A flat plate and an adhesive liquid disposed opposite to each other on the upstream side are stored, and the adhesive liquid holding filter is brought into contact with the adhesive liquid, and a liquid reservoir is installed to move the adhesive liquid to the adhesive liquid holding filter. An air purifier comprising: 2. A flat plate which has a large number of through-holes and which is disposed so as not to overlap with the position of the through-hole of the adhesive liquid holding filter, and is disposed so as to face the downstream side of the adhesive liquid holding filter. The air purifier according to claim 1, further comprising: 3. The pressure-sensitive adhesive liquid holding filter according to claim 1, wherein the two or more pressure-sensitive adhesive liquid holding filters are spaced apart such that the through holes of the opposing adhesive liquid holding filters do not overlap with each other. Air purifier. 4. The air purifier according to claim 1, wherein the upstream flat plate is formed of an adhesive liquid holding filter. 5. The air purifier according to claim 1, wherein a wick is provided on the adhesive liquid holding filter. 6. An interval between an opposing flat plate and an adhesive liquid holding filter or an interval between opposing adhesive liquid holding filters is 2 mm or more and 10 mm or less, and an opening ratio of the flat plate and an opening ratio of the adhesive liquid holding filter are 10 mm or less. 50% or more
The air purifier according to any one of claims 1 to 5, wherein the air purifier is configured to be equal to or less than 10%. 7. The diameter of the through hole of the flat plate is at least twice the distance between the flat plate and the opposing adhesive liquid holding filter, and the diameter of the through hole of the adhesive liquid holding filter is equal to the distance between the opposing adhesive liquid holding filters. 7. The air purifier according to claim 1, wherein the gap is at least twice as narrow as the gap between the filter and the flat plate facing the pressure-sensitive adhesive liquid holding filter. 8. The air purifier according to claim 1, further comprising a movable scraper for scraping dust adhered to the surface of the adhesive liquid holding filter.