JP3036534B1 - Indoor type air purifier for chemical substance removal - Google Patents

Abstract

An air purifier that can be easily used at home for a chemical sensitive patient does not exist. SOLUTION: Inside a main body of an indoor type chemical substance removing air purifier 1 comprising a housing 2, a first space 6, a second space 7, and a third space partitioned by partitions 3a, 3b. 8
Is formed. The first space 6 has an air suction port 9 outside the housing 2 and communicates with the second space 7. The first space 6 is provided with a blower 4 that sends air sucked from the suction port 9 to the second space 7. The third space 8 includes five cylindrical chemical substance removal filters 5a to 5a.
5e is provided so that its internal space communicates with the second space 7. Chemical substance removal filters 5a to 5e are formed of activated carbon impregnated with glass.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an air cleaner for removing chemical substances. More specifically, the present invention relates to a simple chemical substance removing air purifier that can be easily used at home by chemical hypersensitive persons.

[0002]

BACKGROUND OF THE INVENTION Chemical hypersensitivity is a hypersensitivity condition that responds to trace chemicals present in the air, for example, Total Volatile Organic Compounds ("TVOC"), such as formaldehyde. In the United States and Europe, it is said that there is one in ten patients with chemical sensitivity, including potential ones. In addition, in Japan, the number of affected patients has been increasing in recent years, which has become a social problem.

[0003] The treatment of chemical hypersensitivity, of course, requires medical measures including pathological elucidation.
At the same time, engineering measures to remove TVOC, which is an environmental factor, are also important. In particular, it is no exaggeration to say that for patients with chemical sensitivity, a clean living space from which TVOC has been removed is essential not only in treatment but also in daily life.

[0004] By the way, research and treatment on chemical sensitivity are performed by many research institutions and hospitals.
Currently, patients diagnosed with chemical sensitivity are treated at these laboratories and hospitals. These laboratories and hospitals are generally equipped with large-scale and expensive air purifiers for removing chemical substances, and secure clean treatment spaces from which TVOCs have been removed.

[0005] However, once the treatment is completed and the patient returns to the home, they must live in a living space surrounded by many TVOCs. For this reason, the therapeutic effects obtained in research institutions and hospitals are lost early. Therefore,
There is a need for an air purifier for removing chemicals that can be used in ordinary households.

[0006] Until now, many home air purifiers have been commercially available. However, these household air purifiers
In most cases, inorganic suspended particulate contaminants (dust) such as tobacco smoke and dust are mostly removed using a filtering agent. not exist. For this reason, gaseous TVOC having an extremely small particle size cannot be removed as compared with the inorganic suspended particulate contaminants.

[0007] Also, since various plastics, painted or resin-coated metal, and the like are used for components used in commercially available home air purifiers, components from the filter medium to the outlet are used. In addition, the room is contaminated by chemical substances released from the surface of the housing on the indoor side. For this reason, conventional home air purifiers
It is one of the sources of chemical substances. A number of academic societies have reported that air purifiers with so-called deodorizing functions do not have the ability to remove chemicals such as TVOC and formaldehyde. , '98 .8.5-8.7 ', 621-62
See page 4. ).

As described above, the conventional household air purifier cannot efficiently remove chemical substances in ordinary households and improve the living environment of patients with chemical sensitivity.

[0009] Here, an object of the present invention is to provide an air purifier which can be easily used in general households for patients with chemical sensitivity. More specifically, an object of the present invention is to efficiently remove TVOC and formaldehyde in the air in a room in which a chemical hypersensitivity patient lives, supply clean air, and release a chemical substance from the air purifier itself. An object of the present invention is to provide a non-existent air purifier for removing chemical substances, which can improve the living air environment of patients with chemical sensitivity over a long period of time.

[0010]

Means for Solving the Problems There has been no air cleaner for removing chemical substances which can be easily used in ordinary households for patients with chemical hypersensitivity. It is considered that many kinds of chemical substances are emitted from the components used, and a large amount of chemical substances are emitted from the air cleaner itself.

An air purifier for removing chemicals which can be easily used in ordinary households for patients with chemical sensitivity is required to have sufficient ability to remove chemicals. It is also required that the substance removing ability can be maintained for a long period of time, for example, three months or more, and that it has a simple configuration and excellent maintainability.

By the way, the present applicant has previously disclosed in Japanese Patent Laid-Open No. 10-11 / 1998.
No. 4510 discloses that various chemical substances can be relatively easily removed by using, as a filtering agent, activated carbon that has been subjected to a modification treatment for coating the surface of pores with sodium silicate.

The inventors of the present invention have conducted various studies and found that, for example, the activated carbon disclosed in Japanese Patent Application Laid-Open No. 10-114510 was used as a filter agent for an air purifier, and the internal structure and components of the air purifier were used. By devising the surface material of, while having sufficient chemical substance removal ability,
This chemical substance removal ability can be maintained for a long period of time, and furthermore, it has a simple configuration, and is excellent in terms of maintainability, dimensions, and portability. It was found to be suitable. The present inventors have further studied based on such findings and completed the present invention.

According to the first aspect of the present invention, there is provided an indoor-type chemical substance removing air purifier having a main body including a housing, wherein the first space, the second space, and the second space defined by a partition are provided inside the housing.
And a third space are formed in this order, and the first space has a suction port for air from outside the housing and a filter for removing dust particles, and communicates with the second space. The first space is provided with a blower for sending the air sucked from the suction port to the second space, and the third space is provided with a cylindrical chemical substance removing filter for connecting the internal space to the second space. And one or more air outlets for discharging air purified by the chemical substance removal filter into the room, and a surface of the component from the chemical substance removal filter to the air outlet. When,
Provided is an indoor type chemical substance removing air purifier characterized in that at least a surface on the indoor side of the housing is subjected to a chemical substance release suppressing treatment.

According to a second aspect of the present invention, in the indoor type air cleaner for removing a chemical substance according to the first aspect, the surfaces of members constituting the first space, the second space, and the third space, respectively, are provided. Each of them is characterized by being subjected to a chemical substance release suppressing treatment.

According to a third aspect of the present invention, in the indoor type chemical substance removing air purifier according to the first or second aspect, the chemical substance removing filter is detachably provided on the housing. Features.

According to a fourth aspect of the present invention, in the indoor type air cleaner for removing a chemical substance according to any one of the first to third aspects, a caster is provided on a lower surface of the housing. It is characterized by.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of an indoor type air purifier for removing chemical substances according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiment, the first space, the second space, and the third space are formed in this order in the upward direction, and five chemical substance removal filters are used. Take an example.

FIG. 1 is a perspective view showing the indoor type chemical substance removing air purifier 1 of the present embodiment in a partially omitted and partially broken state. FIG. 2 is a sectional view taken along the line AA in FIG. FIG. 3 is a sectional view taken along line BB in FIG.

As shown in FIGS. 1 to 3, an indoor type air purifier 1 for removing a chemical substance according to the present embodiment comprises a housing 2 and a partition wall 3.
, A blower 4 and a chemical substance removing filter 5.
Hereinafter, these components will be sequentially described.

[Case 2, Partition 3, Blower 4] The indoor type chemical substance removing air purifier 1 of this embodiment has a main body composed of a case 2 which is a hollow container having a rectangular parallelepiped outer shape. . In the housing 2, each wall surface is formed of a metal plate such as a stainless steel plate or an aluminum alloy plate. Each of the wall surfaces is degreased after sheet metal processing and joining, so that a chemical substance release suppressing process is performed. Thereby, release of the chemical substance from the housing 2 is suppressed.

Inside the housing 2, two partition walls are provided in a horizontal direction.
3a and 3b are fixed to the three side walls of the housing 2, for example, by welding. In addition, a partition wall 3c
Are fixed to the end faces of the partition walls 3a and 3b and the two side walls of the housing 2 by, for example, welding. All of these partitions 3a to 3c are degreased after sheet metal processing and bonding, similarly to the case 2, so that a chemical substance release suppressing process is performed.
Thereby, release of the chemical substance from the partition walls 3a to 3c is suppressed.

The first space 6, the second space 7, and the third space 8 are formed in the housing 2 in this order by being partitioned by partitions 3a to 3c. Is done.

The first space 6 is formed to be bent in an L-shape with a vertical cross section as shown in FIG.
A suction port 9 for air from outside is provided. In the present embodiment, since the suction port 9 is disposed at the upper side of the housing 2, it is possible to block direct noise of the blower 4 described later, and it is present on the floor of the room where the housing 2 is disposed. It makes it difficult to suck in coarse dust and the like. This allows
The later-described rough filter 10 is prevented from being clogged.

A rough filter is provided on the inner side of the suction port 9.
10 are provided. In the present embodiment, a metal wool filter that does not emit a chemical substance is used as the rough filter 10. By providing the rough filter 10, dust and the like contained in the sucked air are removed, and it is possible to prevent the dust and the like from being clogged in the chemical substance removing filter 5 described later.

At substantially the center of the partition wall 3a, an opening 11 is provided in a rectangular shape. Thereby, the first space 6 communicates with the second space 7 located above the partition 3a.

The blower 4 is installed in the first space 6 at a position directly below the opening 11. In this embodiment,
As the blower 4, a centrifugal blower that sucks air from the rotation axis direction of the rotating blades and blows out air in a direction orthogonal to the rotation axis was used. By operating the blower 4, the air sucked from the suction port 9 flows through the opening 11 into the second space 7.
Is discharged inside.

In the indoor type air purifier 1 for removing a chemical substance according to the present embodiment, since the air noise generated by the blower 4 is absorbed, the bottom and side surfaces of the housing 2 are made of a material which does not easily release a chemical substance. The sound absorber 2a is mounted to reduce the noise of the blower 4.

The air sent to the second space 7 is:
After being slightly pressurized, it is supplied substantially evenly to the inside of the five chemical substance removing filters 5a to 5e disposed inside the third space 8 located above.

In order for the second space 7 to function as an air chamber, the joints between the partition walls 3a to 3c and the three side walls of the housing 2 are all welded all around. Air leakage is completely prevented.

In the third space 8 located above the second space 7, chemical substance removing filters 5a to 5e described later are provided. As shown in FIG. 3, the third space 8 has sufficient space around each of the disposed chemical substance removing filters 5a to 5e in order to easily attach and detach the chemical substance removing filters 5a to 5e from the outside. Secured.

An outlet 12 is provided at the uppermost part of the third space 8 so as to be detachable. In this outlet 12,
A large number of blades 12a are provided, and by changing the direction of these blades 12a, it is possible to adjust the wind direction of the air blown out from the indoor type chemical substance removing air purifier 1.

On the upper surface of the housing 2, an air volume adjustment switch 13 and an integrated operation time meter 14 are provided. By selecting the air volume adjustment switch 13, the rotation speed of the blower 4 is adjusted in two stages of strong wind and weak wind. At the beginning of the operation when the indoor air is dirty, the clean-up time can be shortened by the strong wind operation, and at the time of normal operation or quiet operation, the minimum necessary air volume can be secured by the weak wind operation. On the other hand, the accumulated operation hour meter 14 indicates the replacement time of the chemical substance removal filters 5a to 5e.
The accumulated operation time from the last replacement of 5a to 5e is displayed.

Further, near the four corners of the bottom surface of the housing 2,
Four casters 15 are provided to facilitate movement of the indoor type chemical substance removing air purifier 1 in the room.
Thereby, the portability of the indoor type chemical substance removing air purifier 1 is improved, and the indoor type chemical substance removing air purifier 1 can be easily moved to a desired position in the room.

In the present embodiment, a housing 2 forming a main body of an indoor type chemical substance removing air purifier 1, a partition 3, and a blower 4
Is configured as described above.

[Chemical substance removal filter 5] Third space 8
In the present embodiment, five chemical substance removal filters 5a to
5e is provided.

FIG. 4 is a longitudinal sectional view showing the structure of the chemical substance removing filter 5a. Since the five chemical substance removing filters 5a to 5e have the same configuration, in the following description, the chemical substance removing filter 5a is used as an example.

As shown in the figure, in this embodiment, the chemical substance removing filter 5a has an outer cylinder 16 and an inner cylinder 17 having air permeability, and an activated carbon 18 is filled between them. It is formed. In the present embodiment, as the outer cylinder 16 and the inner cylinder 17, a punched metal in which a perforated plate and a wire mesh are laminated is used.

The activated carbon 18 used in the present embodiment is disclosed in
Activated carbon disclosed by JP-A-114510. That is, the activated carbon is a carbon fiber impregnated with sodium silicate, and is subjected to a modification treatment in which the surface of the pores is coated with sodium silicate, thereby further improving the ability to remove TVOC and formaldehyde.

Specifically, the activated carbon used in the present embodiment was prepared by placing 30 L of an aqueous sodium silicate solution in a stainless steel cylindrical vessel equipped with a stirrer, and adding 15 kg of a commercially available granular molded article (columnar) activated carbon thereto. After the addition, the mixture was stirred at 10 rpm for 1 minute, then the stirrer was removed, a vacuum suction device was attached to the cylindrical container, the pressure in the cylindrical container was reduced to a degree of vacuum of 160 mmHg, and the degree of vacuum was maintained for one hour. Is introduced, and the pressure in the cylindrical container is rapidly increased to the atmospheric pressure. After holding for 1 hour, the activated carbon is taken out and dried by heating at 60 ° C. for 6 hours and at 100 ° C. for 3 hours in an air atmosphere. Manufactured.

The activated carbon 18 to be used preferably has a particle size of 2.36 to 4.75 mm (mesh sieve 2.36 to 4.75, so-called mesh of 8 to 4 mm). If the particle size is larger than 4.75 mm (4 mm), the surface area of the activated carbon 18 filled between the outer cylinder 16 and the inner cylinder 17 is insufficient, and the ability to remove chemical substances is insufficient.
On the other hand, if the particle size is less than 2.36 mm (8 mm), the air resistance of the activated carbon increases, and it becomes impossible to secure the required amount of circulating air.

The filling of the activated carbon 18 between the outer cylinder 16 and the inner cylinder 17 is controlled by controlling the chemical substance and the humidity in order to prevent the activated carbon 18 from being contaminated by the chemical substance existing in the atmosphere. It is desirable to carry out the reaction in a space, for example, a space having a chemical substance of 100 μg / m ³ and a relative humidity of 50% or less. In order to improve the adsorption effect by sufficiently bringing the treated air from the air purifier into contact with the activated carbon 18, mechanical vibration is applied to the filter body while filling the activated carbon 18, and the filling density is reduced to, for example, 0.6 kg / L.
It is desirable to increase the above.

An annular metal end cap 19 for closing the upper opening is welded and joined to the upper part of the chemical substance removing filter 5a. An annular end cap 20 having an opening 20a in the center is provided below the chemical substance removing filter 5a.
Are welded and joined. End caps 19 and 20
All have no air permeability and function as sealing members for preventing air leakage. Therefore, chemical removal filter
The bypass leak of the air from 5a is prevented, and the air sent from the lower part of the chemical substance removal filter 5a to the inside of the chemical substance removal filter 5a, as shown by the white arrow in FIG. And the outer cylinder 16 flows in this order radially into the space outside the chemical substance removing filter 5a, that is, into the third space 8.

The chemical substance removing filter 5a is
After welding and assembling the end caps 19 and 20 to the inner cylinder 17, after degreasing and performing a chemical substance release suppressing process, the space between the outer cylinder 16 and the inner cylinder 17 is filled with activated carbon 18 to produce Is done. Thereby, the release of the chemical substance from the chemical substance removal filter 5a is suppressed.

A mounting plate 22 having a cylindrical projecting portion 22a is fastened to an end cap 19 on the upper surface of the chemical substance removing filter 5a via a cap fastener 21. Projection
Since 22a does not have air permeability, it functions as a sealing member for preventing air from leaking.

If the processing air volume at the top and bottom of the chemical substance removing filter 5a is not uniform, the life of the activated carbon 18 is shortened. To prevent this, the chemical removal filter 5a
Preferably satisfies the following expression.

[0047]

[Number 1] 1.0 ≧ d / (V · S V / N) 1/2 ≧ 0.65 ····· where code d is the minimum required inner tube diameter of a chemical substance removing filter 5a (m), code V is the total activated carbon amount (m ³ ) of the indoor type chemical substance removing air purifier 1, the symbol _SV is the space velocity (1 / sec), and the symbol N is the total number of installed chemical substance removing filters. It is.

FIG. 5 shows the upper part of the chemical substance removing filter 5a,
FIG. 5 (a) is an explanatory diagram showing an example of a blowing wind speed distribution in a middle part and a lower part, and FIG. 5 (a) shows d / ( _VSV / N) ^1/2.
= 0.36, and FIG. 5B shows d / (V · S _V
/ N) ^1/2 = 0.66. FIG. 6 is a graph showing a change in the chemical substance treating ability of the chemical substance removing filter 5a in the cases shown in FIGS. 5 (a) and 5 (b), respectively.

As shown in FIG. 5 (a) and FIG. 6, if the equation is not satisfied, the chemical substance treatment capacity of the chemical substance removing filter 5a starts to decrease after two weeks, and the chemical substance sharply increases after three weeks. Material processing capacity is reduced. On the other hand, as shown in FIGS. 5 (b) and 6, when the formula is satisfied, the chemical substance treating capacity of the chemical substance removing filter 5a hardly decreases even after 5 weeks, and the sufficient chemical substance treating capacity is not obtained. It can be seen that it can be maintained.

As shown in FIGS. 3 and 4, an L-shaped mounting bracket 23 is fixed to the upper portion of the inner surface of the third space 8 of the housing 2. The chemical substance removing filter 5a is fixed by mounting the mounting plate 22 on the mounting brackets 23, 23 which are arranged opposite to each other, and being fastened by the chemical substance removing filter fasteners 24, 24. As a result, the chemical substance removing filter 5a is detachably mounted on the housing 2 from the outside.

On the other hand, an annular packing 25 is mounted on the lower surface of the chemical substance removing filter 5a. In this embodiment,
As the packing 25, a well-known elastic packing having a surface coated with an inert material (for example, PTFE) that does not release a chemical substance is used. As a result, the packing 25
Is resilient and does not release chemicals.

As shown in FIG. 4, the packing 25 comes into contact with the upper surface of the partition wall 3a when the chemical substance removing filter 5a is mounted at a predetermined position inside the third space 8. This prevents air from leaking from the second space 7 to the third space 8, and all the air in the second space 7 is sent to the inner surface of the chemical substance removing filter 5a.

The replacement of the chemical substance removing filter 5a is performed by
The chemical substance removal filter fasteners 24, 24 are removed by removing the blowout port 12 at the upper part of the filter, and the used chemical substance removal filter 5a is pulled up and carried out of the machine. And a replacement chemical removal filter filled with new activated carbon 18
5a, the mounting plate 22 is mounted on the mounting brackets 23, 23, and is disposed in a predetermined position.
It can be done easily by tightening 4 and 24.

In this embodiment, as shown in FIGS. 1 to 3, five chemical substance removing filters 5a to 5e are arranged in a line apart from each other. Thereby, the depth dimension of the indoor type chemical substance removing air purifier 1 of this embodiment, that is, the dimension of the indoor type chemical substance removing air purifier 1 in the vertical direction in FIG. 3 can be reduced.

Further, the volume V ₁ (m ³ ) of the second space 7 and
Processing air volume Q (m ³ / s) of the indoor type chemical substance removal air purifier 1
ec) preferably satisfies the following formulas and formulas.

[0056]

[Formula 2] 0.6 ≧ V ₁ /Q≧0.3 ····· H ≧ (Q / π) ^1/2. Show. V ₁
In the case of /Q=0.4, the air volumes of the five chemical substance removal filters 5a to 5e were measured. The results are summarized in Table 1.

[0057]

[Table 1]

As shown in Table 1, when V ₁ /Q=0.4, the air volumes of the five chemical substance removing filters 5a to 5e are made uniform. As described above, since the housing 2, the partition wall 3, and the chemical substance removal filter 5 of the indoor type chemical substance removing air purifier 1 of the present embodiment are all subjected to the chemical substance release suppression processing, And does not itself become a source of chemicals.

The indoor type chemical substance removing air purifier 1 of the present embodiment is configured as described above. Next, FIGS.
The operation of the indoor chemical substance removing air purifier 1 of the present embodiment will be described with reference to FIG. The white arrows in each figure indicate the flow of air.

1 to 3, the air outside the indoor type chemical substance removing air purifier 1 is sucked into the first space 6 from the suction port 9 by the blower 4. Then, the air is sucked into the blower 4 provided in the first space 6 and discharged upward. As a result, the air flows through the aperture 11 to the second
To the space 7.

The air sent to the second space 7 is not immediately supplied to each of the chemical substance removing filters 5a to 5e.
After staying in the second space 7 for a very short time and the pressure in the second space 7 is substantially uniform and slightly increased, a chemical substance removing filter disposed inside the third space 8 located above. 5a
To 5e. Therefore, the air is sent from the second space 7 to each of the chemical substance removing filters 5a to 5e as a substantially uniform rectification. Therefore, in the indoor type chemical substance removing air purifier 1 of the present embodiment, the life of the activated carbon attached to the specific one of the five chemical substance removing filters is prevented from being extremely reduced. For this reason, the indoor type chemical substance removing air purifier 1 of the present embodiment has a sufficient chemical substance removing ability and can maintain this chemical substance removing ability for a long period of time.

As shown in FIG. 4, a chemical substance removing filter
The air sent to the inside of 5a to 5e passes through the inner cylinder 17, the activated carbon 18 and the outer cylinder 16 in this order, and the chemical substance removal filter.
Radially flows into the space outside 5a to 5e, that is, the third space 8. As the air passes through the activated carbon 18, chemicals such as TVOC and formaldehyde are adsorbed and removed by the activated carbon 18.

Then, the purified air that has flowed into the third space 8 goes further upward and is discharged again into the room from the outlet 12 provided at the top of the housing 2. As described above, the indoor type chemical substance removing air purifier 1 of the present embodiment.
Has a sufficient chemical substance removing effect because it uses, as a filtering agent, activated carbon 18 having a pore surface coated with sodium silicate and modified.

Further, the indoor type chemical substance removing air purifier 1 of the present embodiment does not directly send the air discharged from the blower 4 to the chemical substance removing filter 5 but the second space 7.
From the second space 7 to each of the chemical substance removing filters 5a to 5e as a rectification.
For this reason, the life of the activated carbon attached to the specific chemical substance removing filter among the five is prevented from being extremely shortened, and the chemical substance removing ability can be maintained for a long period of time, for example, three months or more.

The indoor type air purifier 1 for removing a chemical substance according to the present embodiment comprises a mounting plate 22 and a mounting bracket 2.
Since the chemical substance removing filters 5a to 5e are supported by using the components 3 and 23, the chemical substance removing filters 5a to 5e can be easily replaced, and the maintainability is excellent.

In the indoor type chemical substance removing air purifier 1 of this embodiment, the chemical substance removing filters 5a to 5e are arranged in a line, and the first space 6 to the third space 8 are vertically arranged. Because of the arrangement, the depth dimension of the indoor type chemical substance removing air purifier 1 is also reduced.

As described above, according to the indoor type chemical substance removing air purifier 1 of the present embodiment, the chemical substances in the air such as TVOC and formaldehyde are efficiently removed in the living room for patients with chemical sensitivity. , Can supply clean air.

[0068]

EXAMPLE An indoor type air purifier for removing chemical substances according to the present invention will be described more specifically with reference to examples.

The indoor type chemical substance removing air purifier 1 of the embodiment shown in FIGS. 1 to 4 was disposed in a laboratory, and the chemical substances in the indoor air were removed. The outer dimensions of the housing 2 were about 700 mm in height, about 800 mm in width, and about 230 mm in depth.

FIG. 7 shows the total volatile organic compound (TVOC) contained in the air sucked into the indoor type chemical substance removing air purifier 1 while constantly injecting a fixed amount of the volatile organic compound into the laboratory. 4 is a graph showing the results of measuring both the amount of the total volatile organic compound (TVOC) contained in the air blown out from the indoor type chemical substance removing air purifier 1 after the treatment.

From the graph shown in FIG. 7, it is found that the air sucked into the indoor type chemical substance removing air purifier 1 has 1000 μg /
While TVOC concentration of m ³ is contained, TVOC concentrations in the air blown out from the indoor chemical substance removal air purifier 1 is reduced to only 50 [mu] g / m ³ or less and about 1/20 Was. Therefore, the indoor type chemical substance removing air purifier 1 of the present embodiment.
Has sufficient chemical substance removal performance.

Next, the indoor type chemical substance removing air purifier 1
Was installed in a general living room, and the attenuation of TVOC concentration in the indoor air was measured. FIG. 8 is a layout view of the general living room 30. This general living room 30 is a 12-tatami Japanese-style room, 9 years after construction. The indoor type chemical substance removing air purifier 1 was installed near the inner rear wall of the room, and the indoor condition was always in the same state as when it was used. In addition, the code | symbol 31 in FIG.
Reference numeral 32 indicates a table, reference numeral 33 indicates four cushions, reference numeral 34,
Reference numeral 35 denotes a window, and reference numeral 36 denotes a bathroom. Also,
The measurement point of the TVOC concentration in the air was at the position 37 at 1.2m height in the center of the room, and there was no occupant at the time of measurement.

FIG. 9 is a graph showing the decay of the TVOC concentration immediately after the indoor type chemical substance removing air purifier 1 is started. Since the living room 30 of this embodiment is a general living room for experiments, the TVOC concentration in the air is about one third of the concentration in the general room (about 1000 μg / m ³ ).

At the time when 20 minutes have passed since the start of the indoor-type air cleaner 1 for removing chemical substances, the TVOC concentration has already become less than 1/2 of the initial concentration, about 150 μg / m ³ , and the World Health Organization. (WHO) 's recommended standard value of 300 μg / m ³ was significantly lower.

The ability to remove formaldehyde was tested in the same general living room 30. In this experiment, since the initial concentration of formaldehyde in the room was low, five plywood sheets were placed in the room as a formaldehyde generating source, and the formaldehyde concentration in the room air was measured. Table 2 shows the results.

[0076]

[Table 2]

As shown in Table 2, the concentration of formaldehyde when the indoor type chemical substance removing air purifier 1 was stopped was 0.21%.
While it was 1 ppm, it decreased to 0.027 ppm after the operation of the indoor chemical substance removal air purifier 1. This is about one-third of the Ministry of Health and Welfare's indoor standard concentration of 0.080 ppm.

Further, the circulating air volume and the noise during the operation of the indoor type chemical substance removing air purifier 1 were measured. Air volume is a 280m ³ / hr at the time of strong wind operation, at the time of weak wind operation 160m ³ /
hr. Thereby, it turned out that it has sufficient circulation air volume.

The noise was measured at a point 1 m away in the anechoic chamber. The result was 40 dB (A) during strong wind operation and 28 dB (A) during weak wind operation. Thereby, it turned out that it has sufficient quietness.

FIG. 10 shows a continuous operation of the indoor type chemical substance removing air purifier 1 to evaluate the life of the chemical substance removing apparatus. For comparison, the indoor type chemical substance removal air purifier 1 has the same configuration as the indoor type chemical substance removal air purifier 1 except that the second space 7 is not provided. The life of the chemical substance removing device was also evaluated using the air cleaner for comparison as a comparative example. The results are shown graphically in FIG. In the indoor type chemical substance removing air purifier of this comparative example, the air sent from the blower 4 is directly supplied to the chemical substance removing filters 5a to 5e. FIG. 10 shows the results of the present invention example and the conventional example.

According to the example of the present invention, even after the continuous operation for 5 weeks, the initial adsorption capacity is almost maintained. On the other hand, in the comparative example, the adsorption capacity was significantly reduced after the continuous operation for 5 weeks.

Therefore, the chemical substance removal filter 5a of the comparative example
As a result of examining the activated carbon provided in ~ 5e, it was found that the capacity of the activated carbon 18 provided in the chemical substance removing filters 5b, 5c and 5d was significantly reduced. For this reason, it turned out that the 2nd space 7 in this invention has sufficient effect in supplying air uniformly to the chemical substance removal filters 5a-5e.

(Modification) In the description of the embodiment and the example, the case where the first space, the second space, and the third space are formed in this order in the upward direction is taken as an example. However, the present invention is not limited to the arrangement direction of the first space to the third space, and the first space to the third space may be formed side by side in a direction other than upward.

In the description of the embodiments and examples,
As an example, the case where the chemical substance removing filter uses activated carbon impregnated with glassy material of sodium silicate and coated on the surface of pores with sodium silicate is used. However, the present invention is not limited to this activated carbon, and it is also possible to use ceramics, zeolite, and the like. However, from the viewpoint of the effect of removing chemical substances, it is most desirable to use the above-mentioned activated carbon.

In the description of the embodiments and examples,
The case where five chemical substance removal filters are used is taken as an example. However, the present invention is not limited to the number of chemical substance removing filters to be installed, and may be appropriately determined according to the processing capacity of the indoor type chemical substance removing air purifier according to the present invention.

In the description of the embodiments and examples,
The case where the first space is formed to be bent in an L-shape with a vertical cross section is taken as an example. However, the present invention is not limited to the shape of the first space, and the first space may be formed in a rectangular parallelepiped shape having no vertical portion. In this case, the suction port may be provided at the lower part of the housing.

In the description of the embodiments and examples,
Although a centrifugal blower was used as the blower, the present invention is not limited to a specific form of the blower, and any blower that can send air sucked from the suction port to the second space can be used. .

In the description of the embodiments and examples,
Although the case, the partition wall, and the chemical substance removal filter were degreased, the chemical substance release suppression processing was performed, but the present invention is not limited to the specific form of the chemical substance release suppression processing, and the release of the chemical substance is suppressed. Any process that can be used can be used equally.

In the description of the embodiments and examples,
Although a cylindrical chemical substance removing filter was used, the present invention is not limited to the shape of the chemical substance removing filter, and any cylindrical chemical substance removing filter that allows air sucked inside to flow out can be used equally. be able to. Further, in the description of the embodiment and the example, the case where the housing has a rectangular parallelepiped shape is taken as an example, but the present invention is not limited to the outer shape of the housing.

[0090]

As described above, according to the present invention, an air purifier that can be easily used at home for a patient with chemical sensitivity, more specifically, an air purifier for patients with chemical sensitivity. By removing TVOC and formaldehyde from the air in the living room efficiently and supplying clean air, the living air environment of patients with chemical sensitivity can be improved over a long period of time. An air cleaner for removing type chemical substances can be provided. The significance of the present invention having such an effect is extremely remarkable.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an indoor type chemical substance removing air purifier in an embodiment in a partially omitted and broken state.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a longitudinal sectional view illustrating a configuration of a chemical substance removing filter according to the embodiment.

FIG. 5 is an explanatory diagram showing an example of a blowing wind speed distribution in an upper part, a middle part, and a lower part of the chemical substance removing filter;
5 (a) shows the case where _{d / (V · S V /} N) 1/2 = 0.36, FIG. 5 _{(b), d / (V · S V} / N) 1/2 = 0 .
66 is shown.

FIG. 6 is a graph showing a change in the chemical substance treating capacity of the chemical substance removing filter in the cases shown in FIGS. 5 (a) and 5 (b), respectively.

FIG. 7 shows the amount of total volatile organic compounds (TVOC) contained in the air sucked into the indoor type chemical substance removal air purifier and the amount of the indoor chemical substance removal type air purifier after the treatment. 4 is a graph showing the results of measuring both the amount of total volatile organic compounds (TVOC) contained in the blown air.

FIG. 8 is a layout diagram of a general living room used in the embodiment.

FIG. 9 is a graph showing the decay of the TVOC concentration immediately after the indoor type chemical substance removal air purifier is started in the example.

FIG. 10 is a graph showing a result of evaluating the life of the chemical substance removing device in the example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor-type air cleaner for chemical substance removal 2 Housing 3a, 3b Partition wall 4 Blower 5a-5e Chemical substance removal filter 6 First space 7 Second space 8 Third space 9 Suction port

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 46/00 F24F 7/00

Claims (4)

(57) [Claims] 1. An indoor-type chemical substance removing air purifier having a main body including a housing, wherein a first space, a second space, and a third space defined by a partition are provided inside the housing. Are formed in this order, and the first space has a suction port for air from outside the housing and a filter for removing dust particles, and communicates with the second space. The first space is provided with a blower for sending air sucked from the suction port to the second space, and the third space is provided with a cylindrical chemical substance removing filter for passing the inner space through the first space. And one or more air outlets for discharging air purified by the chemical substance removal filter into the room, the air outlet being provided with at least one air pipe connected to the space 2, and the air outlet from the chemical substance removal filter. Components up to And the surface of, said at least an inner side of a surface of the housing, both the indoor chemical substance removal air cleaner characterized by being subjected to chemical release suppression processing. 2. The method according to claim 1, wherein all of the surfaces of the members constituting the first space, the second space, and the third space are subjected to a chemical substance release suppressing process. Indoor type air cleaner for removing chemical substances. 3. The indoor type chemical substance removing air purifier according to claim 1, wherein the chemical substance removing filter is detachably disposed on the housing. 4. The indoor type chemical substance removing air purifier according to claim 1, wherein a caster is provided on a lower surface of the housing.