Air Purifier

Abstract

To efficiently reduce undesired substance floating inside a room.SOLUTION: An air purifier 1 for reducing undesired substance floating inside a room includes a fan 2 that circulates indoor air, an exhaust channel 3 that allows the air discharged from the outlet of the fan 2 to circulate therethrough; and an adsorbent 5 that removes undesired substance derived from building materials. The exhaust channel 3 is covered with a cover 4 having a ventilation material in at least part of it. The adsorbent 5 is disposed inside the cover 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air purification device. [Background technology]

[0002] For example, facilities that store and exhibit cultural assets, such as art galleries and museums, may take measures to prevent unwanted substances (such as ammonia and formaldehyde) emitted from concrete structures and interior materials from affecting the cultural assets. As a countermeasure against this, a method has been used in which the air inside the display case is sucked in by a vacuum and passed through a filter to remove unwanted substances contained in the air (for example, Reference 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-075239 A Summary of the Invention [Problem to be solved by the invention]

[0004] In order to reduce the concentration of unwanted substances in a room after it is put into service, it is preferable to remove and reduce the unwanted substances emitted from building materials (such as concrete frameworks and interior materials) from the construction stage. However, the air purifier in Cited Document 1 is designed to be installed in a small, enclosed space such as an art exhibition case, and there is a risk that it may not be able to efficiently remove unwanted substances in a large space (open space) with few partitions, such as a room under construction. In addition, introducing outside air into the room increases the humidity inside the room, and there is a risk of condensation occurring. From this perspective, an object of the present invention is to efficiently reduce unnecessary substances floating in a room. [Means for solving the problem]

[0005] The air purifying device of the present invention, which solves the above problems, includes a blower that circulates indoor air, an exhaust flow path through which the air discharged from the outlet of the blower flows, and an adsorbent that removes unnecessary substances generated from building materials, the exhaust flow path being at least partially covered with a cover having a breathable material, and the adsorbent is disposed inside the cover. A base having a plurality of shelves on which the adsorbent is placed is disposed inside the cover. It is characterized by the fact that According to this air purifier, the air discharged from the blower is supplied to the exhaust passage covered with a cover, so the contact efficiency between the adsorbent and the unwanted substances contained in the air is increased compared to the case where the adsorbent is simply placed in the room. Also, because the blower is used to circulate the air in the room, air can be efficiently supplied to the exhaust passage even in a large space with few partitions, such as a room under construction. In addition, if the cover is made of a material (non-woven fabric or mesh material) that is less likely to become clogged with dust generated during construction work, purification operation can be performed without reducing the purification capacity (amount of air circulation). Therefore, it is possible to efficiently reduce unnecessary substances generated during the construction stage. In addition, the contact surface between the adsorbent and the air can be expanded three-dimensionally, so that unnecessary substances can be reduced more efficiently. Effect of the Invention

[0007] According to the air purifying device of the present invention, it is possible to efficiently reduce unnecessary substances floating in the room. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an air purification device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing a base used in the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings. The present invention is not limited to the following embodiments. (Air Purifier) The air purifying device 1 is a device for reducing unwanted substances in a room, for example, in an art gallery or museum. The unwanted substances are, for example, ammonia, formaldehyde, etc. The air purifying device 1 includes a blower 2, an exhaust flow path 3, a cover 4 that covers the exhaust flow path 3, and an adsorbent 5, as shown in FIG. The blower 2 is a device that generates an air flow. The blower 2 takes in indoor air from the suction port 2b into the cylindrical body 2a and expels it from the exhaust port 2c. Here, a blower that combines a motor and an impeller (not shown) is used, but the present invention is not limited to this. The exhaust flow path 3 is a flow path through which air discharged from the blower 2 flows. The exhaust flow path 3 is covered by a cover 4. The cover 4 is attached to the exhaust port 2c of the blower 2. The cover 4 has a cylindrical shape with a bottom. The air blown out from the blower 2 passes through the exhaust flow path 3 covered by the cover 4 and is discharged to the outside. The cover 4 is made of a material (nonwoven fabric or mesh material) that is unlikely to become clogged with dust generated by construction work, for example. In this embodiment, the cover 4 is attached to the exhaust port 2c side, but it may be attached to the suction port 2b side. For example, zeolite, activated carbon, deodorant, etc. are used as the adsorbent 5. It is preferable to appropriately change the adsorbent 5 according to the properties of the unnecessary substances. As shown in Fig. 2, it is preferable to place a pedestal 6 in the exhaust flow path 3. The pedestal 6 in this embodiment has multiple shelves arranged vertically at intervals, and the adsorbent 5 is placed on each shelf. The multiple shelves are supported by multiple supports. The shelves may be flat or made of a mesh material. The pedestal 6 may be omitted.

[0010] (Evaluation test) A test was conducted to evaluate the effect of reducing indoor ammonia concentration. The test was conducted under conditions of temperature of 20-22°C and humidity of 40-55%. The adsorbent 5 used was a material (Fresh Pearl manufactured by Nippon Paper Paripier Co., Ltd.) that combines granular pulp with ferric sulfate to adsorb and decompose gas. The measurement results are shown in Table 1. The examples in the table are the results of evaluation tests of the air purifier 1. The ammonia concentration in the room was 30 ppm before using the air purifier 1. After one hour, the ammonia concentration in the room decreased to 25 ppm, and two hours after the measurement, it decreased to 20 ppm.

[0011] [Table 1]

[0012] Comparative Example 1 Next, a description will be given of Comparative Example 1. Comparative Example 1 is an evaluation result when no adsorbent was installed in the room and only the blower 2 was operated. The initial concentration of ammonia was 45 ppm, but the other conditions were the same as those in the evaluation test.

[0013] As shown in Table 1, the indoor ammonia concentration remained at 45 ppm from the start of measurements and did not decrease.

[0014] Comparative Example 2 Next, Comparative Example 2 will be described. In Comparative Example 2, the blower 2 was not used, and only the adsorbent 5 was installed indoors. In other words, it was confirmed whether the ammonia concentration would decrease without circulating air. The other conditions were the same as those in the evaluation test.

[0015] As shown in Table 1, the ammonia concentration in the room was maintained at 30 ppm from the start of the measurement and did not decrease. In other words, when only the adsorbent 5 was installed without circulating the air, the ammonia concentration in the room could not be decreased.

[0016] (Action and effect) According to the air purifying device 1 of this embodiment described above, the air containing unnecessary substances discharged from the blower 2 is supplied to the exhaust flow path 3 covered by the cover 4, so the contact efficiency between the unnecessary substances contained in the air and the adsorbent 5 is increased compared to the case where the adsorbent 5 is simply placed in the room. Furthermore, because the blower 2 is used to circulate the air in the room, air can be efficiently supplied to the exhaust flow path 3 even in a large space with few partitions, such as a room under construction. Therefore, the unnecessary substances floating in the room can be efficiently reduced.

[0017] Furthermore, if the cover 4 is made of a material (non-woven fabric or mesh material) that is not easily clogged by dust generated during construction work, purification operation can be performed without reducing the purification capacity (amount of air circulation). Therefore, unnecessary substances generated during the construction stage can be efficiently reduced.

[0018] Furthermore, a base 6 on which the adsorbent 5 is placed is disposed inside the cover 4, so that the contact surface between the unwanted substances contained in the air and the adsorbent 5 can be expanded three-dimensionally, thereby enabling the unwanted substances to be reduced more efficiently.

[0019] The embodiment of the present invention has been described above. However, the present invention is not limited to the above embodiment, and each component can be modified as appropriate without departing from the spirit of the present invention. For example, although the shelf boards of the base 6 are configured with three levels, they may be configured with more than three levels. [Explanation of symbols]

[0020] 1. Air Purifier 2. Blower 3 Exhaust flow path 4 Cover 5. Adsorbents 6 Pedestal

Claims

[Claim 1] A fan to circulate air in the room, an exhaust flow path through which air discharged from an outlet of the blower flows; and an adsorbent for removing unnecessary substances generated from the building materials; The exhaust flow path is at least partially covered with a cover having a breathable material, The adsorbent is disposed inside the cover, The air purifying device is characterized in that a base having a plurality of shelves on which the adsorbent is placed is disposed inside the cover.

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