JP2023133928A - Air cleaning method and air cleaning device - Google Patents

Abstract

To provide an air cleaning method capable of effectively removing fine articles from an indoor space in which a person or an object may move frequently, and capable of effectively preventing occurrence of mold on a ceiling.SOLUTION: An air cleaning method for cleaning air in a room having a space sandwiched between a floor and a ceiling, comprises: a first step of collecting air from an intermediate layer portion between a quarter height from the floor and a half height from the floor in a space between the floor and the ceiling; a second step of cleaning the collected air; and a third step of discharging the cleaned air to a quarter upper portion on the ceiling side in the space between the floor and the ceiling.SELECTED DRAWING: Figure 2

Description

The present invention relates to an air cleaning method for cleaning the air in a room having a space between a ceiling and a floor, and an air cleaning device used therein.

BACKGROUND ART Conventionally, an air cleaner described in Patent Document 1 has been known. This air purifier is used by being installed on the floor of a room that has a space between the ceiling and the floor. An inlet is formed in the lower part of the main body of this air purifier, and an outlet is formed in the top surface of the main body. A ventilation path is formed in the main body to communicate the inlet and the outlet, and the ventilation path is provided with a filter for purifying the air. Further, the ventilation passage is provided with a fan (blower) that introduces air from an inlet and releases the air from an outlet. A louver is provided near the air outlet for changing the direction of air blowing out from the air outlet.

Such an air purifier can suck in air containing fine particles such as dust, microorganisms, mold spores, etc. floating in a space near the floor of a room through an inlet. The filter removes fine particles from the air that is sucked in through the suction port and passes through the ventilation path. Then, the air that has been purified by removing the fine particles is further blown out from the air outlet through the ventilation passage. According to such an air cleaner, clean air can be provided to a user located at a relatively low level in the room, such as a user lying on a bed in the room.

Japanese Patent Application Publication No. 2016-70511

By the way, in large-scale indoor spaces such as commercial facilities such as large-scale retail stores, objects such as products and people move frequently. In such an environment, conventional air purifiers such as those mentioned above suck in and remove (purify) fine particles such as dust floating in the space near the floor of the room. It is difficult to purify the air by effectively removing fine particles that are scattered or thrown up by their movement.

In addition, in large-scale indoor spaces such as trademarked facilities, there is a large difference in temperature between day and night due to switching on and off of heating and cooling by air conditioners. Therefore, due to the temperature difference, there is a high possibility that dew condensation will occur on the ceiling, which is in contact with warm air that can contain a lot of water vapor. In such an environment, if the mold spores (fine objects) floating in this indoor space are not effectively removed, mold spores will adhere to the nearby ceiling where the air tends to stagnate, and many molds will grow on that ceiling. There is a risk of it getting lost.

The present invention has been developed in view of these circumstances, and is particularly capable of effectively removing fine particles from indoor spaces where people and objects frequently move, and also effectively preventing the growth of mold on ceilings. The present invention provides an air cleaning method and an air cleaning device used in the air cleaning method.

The air cleaning method according to the present invention is an air cleaning method for cleaning the air in a room having a space sandwiched between a floor and a ceiling. a first step of collecting air from an intermediate layer between a quarter height and a half height above the floor; a second step of purifying the collected air; and a third step of discharging the purified air to the upper quarter portion of the ceiling side in the space between the air and the ceiling.

According to such a configuration, many fine particles are suspended due to human activities, and air is collected from the middle layer of the room space where the temperature environment is relatively stable, and the air is purified. The purified air, whose temperature is relatively stable, is then released into the upper part of the room, including near the ceiling, where air tends to stagnate.

Further, the air purification method according to the present invention is an air purification method for purifying the air in a room having a space sandwiched between a floor and a ceiling, and the method comprises: a first step of collecting air from the middle layer part of the roof; a second step of purifying the collected air; and a third step of discharging the purified air to the upper layer portion of the air.

According to such a configuration, many fine objects can be suspended due to human activities, and the room space has a relatively stable temperature environment and is 1 meter or more and up to 2 meters from the floor where the upper body of a person can be located. Air is collected from the middle layer and purified. The purified air is then released into the upper part of the room, including the area near the ceiling where air tends to stagnate.

In the air cleaning method according to the present invention, the third step may be configured to discharge the cleaned air within an upper half range in the height direction of the upper layer portion.

According to such a configuration, purified air whose temperature is relatively stable can be discharged to an area closer to the ceiling where air is relatively likely to stagnate.

In the air cleaning method according to the present invention, the third step may be configured to emit air in a direction parallel to the surface of the ceiling.

According to such a configuration, purified air whose temperature is relatively stable can be delivered to a longer distance.

In the air cleaning method according to the present invention, the third step may be configured to emit air along the surface of the ceiling.

With this configuration, purified air whose temperature is relatively stable can be delivered further away while touching the ceiling where air tends to stagnate in the vicinity.

An air purifying device according to the present invention is an air purifying device used in any of the above-mentioned air cleaning methods, and includes an upper block formed with an air outlet for discharging air forward, and an air purifying device that hangs from the upper block. a middle block provided with a duct extending from an end on the upper block side to the other end; and an air intake port connected to an end of the middle block opposite to the end on the upper block side. a lower block in which a lower block is formed, the upper block is formed with an upper ventilation passage that communicates with the duct of the middle block and continues to the air outlet, and the lower block has a lower block formed with a A lower ventilation passage is formed that communicates with the duct and continues to the intake port, and further introduces air from the intake port, passes the air through the lower ventilation passage, the duct, and the upper ventilation passage, and then exits the air outlet. A blower that emits the air,
and a purifier that purifies the air introduced from the intake port.

An air purifier having such a configuration is installed in a room having a space between the floor and the ceiling, and the air intake port is at a height of one-fourth of the height from the floor in the space between the floor and the ceiling. It is arranged in an intermediate layer part between one-half the height from the floor, and the air outlet is arranged in an upper part of the ceiling-side quarter in the space between the floor and the ceiling. It can be installed in Under these conditions, many fine particles are suspended due to human activities, and the air from the middle layer of the room, where the temperature environment is relatively stable, is introduced from the intake port of the lower block, and the purifier removes it. Air purification takes place. The purified air, whose temperature is relatively stable, passes through the lower ventilation duct of the lower block, the ducts of the middle block, and the upper ventilation duct of the upper block, and exits from the air outlet near the ceiling where air tends to stagnate in the room space. It is blown out to the upper layer including the

According to the air purification method and air purification device of the present invention, the purified air is collected from the middle layer portion of the room space where the temperature environment is relatively stable and is collected near the ceiling where air tends to stagnate in the room space. Since it is released into the upper layer containing the air, it can effectively remove fine particles from indoor spaces where people and objects frequently move, and also prevents air stagnation near the ceiling and prevents condensation on the ceiling. As a result, mold growth on the ceiling can be effectively prevented.

FIG. 1 is a diagram showing an example of the appearance of an air cleaning device used in an air cleaning method according to an embodiment of the present invention. FIG. 2 is a diagram showing the internal structure of the air purifier shown in FIG. 1 and the relationship between the air purifier and the space of the room in which it is installed.

Embodiments of the present invention will be described below with reference to the drawings.

An air cleaning device used in an air cleaning method according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

The air cleaning device 10 has an upper block 11, a middle block 12, and a lower block 13, which are connected in series in the vertical direction. The air purifier 10, which is formed by combining three blocks and has a longitudinally long shape, is fixed to the wall surface of the pillar 120 on the back side, and the upper surface of the upper block 11 is in contact with the ceiling 110, while the lower end of the lower block 13 is in contact with the ceiling 110. It is installed in a room (for example, a commercial facility such as a large-scale retail store) so that a space is formed between it and the floor 100.

The middle block 12 has a box shape with a predetermined thickness (thickness in the direction perpendicular to the wall surface of the column 120), and a duct 12dct extending from the lower end to the upper end is formed inside the middle block 12. The upper block 11 has a structure including a rising part 11a continuing from the middle block 12 and a protruding part 11b continuing from the rising part 11a and projecting forward. On the front surface of the protrusion 11b of the upper block 11, two air outlets 14a and 14b are formed that extend in parallel in the lateral direction. Further, in the upper block 11, an upper ventilation passage 11pth is formed which communicates with the duct 12dct of the middle block 12 and continues to the two air outlets 14a and 14b. A blower 16 is provided in the upper ventilation passage 11pth.

The lower block 13 has a box shape that has the same thickness as the middle block 12 and is shorter than the middle block 12, and has an intake port 15a formed on its lower surface, and intake ports 15b and 15c formed on its two side surfaces. Inside the lower block 13, a lower ventilation passage 13pth is formed which communicates with the duct 12dct of the middle block 12 and continues to the three intake ports 15a, 15b, and 15c. Further, a purifier 17 is provided in the lower ventilation passage 13pth of the lower block 13 to purify the air passing through the lower ventilation passage 13pth. The purifier 17 can be configured with a filter (for example, a HEPA filter), a photocatalyst, an ultraviolet light source (UVLED) for activating the photocatalyst, and the like.

In the air purifying device 10 having the above-described structure, the lower ventilation passage 13pth of the lower block 13, the duct 12dct of the middle block 12, and the upper ventilation passage 11pth of the upper block 11 are connected to two air intakes from the three intake ports 15a, 15b, and 15c. It is formed as one passage leading to the outlets 14a, 14b. When the blower 16 of the upper block 13 operates, the air introduced into the lower ventilation passage 13pth from the three suction ports 15a, 15b, and 15c of the lower block 13 passes through the purifier 17 and is purified. The air is blown out from the lower ventilation passage 13pth through the duct 12dct (middle block 12) and the upper ventilation passage 11pth, and from the two outlets 14a and 14b (upper block 11) (see thick arrows in FIG. 2). .

Furthermore, when the air purifying device 10 having the above-described structure is installed in a room (for example, a commercial facility such as a large-scale retail store), as shown in FIG. , 15b, and 15c are a quarter height (h1) from the floor 100 and a half height (h2) from the floor 100 in the space (height H) between the floor 100 and the ceiling 110. It is located in the intermediate layer portion Em between the two. Further, the two air outlets 14a and 14b of the upper block 11 are connected to the upper part Eu of the quarter (height H) on the side of the ceiling 110 in the space (height H) between the floor 10 and the ceiling 110, especially the upper part Eu. It is located in the upper half range Euu in the height direction.

For example, in a facility space where the height H of the ceiling 110 from the floor 100 is H = 3.85 m, the middle layer portion Em is from the height h1 = 0.963 m from the floor 100 to the height h2 = 1.925 m from the floor 100. Can be set as an area up to a height of . Further, the upper part Eu can be set as an area from the ceiling 110 to 0.9623 m below, and the upper half range Euu can be set as an area from the ceiling 110 to 0.481 m.

By operating the air purifier 10 arranged as described above (operating the blower 16), the air in the space sandwiched between the floor 100 and the ceiling 110 is purified as follows. Air is blown out.

Air in the middle layer Em of the room space is introduced from the three suction ports 15a, 15b, and 15c of the air purifier 10 (step 1), and the air is introduced by the purifier 17 while passing through the lower ventilation passage 13pth of the lower block 13. Cleaned (step 2). Then, the purified air flows from the lower ventilation passage 13pth of the lower block 13 through the duct 12dc of the middle block 12 to the upper ventilation passage 11ph of the upper block 11. The purified air flowing into the upper ventilation passage 11pth flows from the two air outlets 14a and 14b to the upper part Eu, especially on the upper side thereof, parallel to the surface of the ceiling 110 and along the surface of the ceiling 110. It is blown out within half the range Euu (step 3).

By the way, in a room having a space sandwiched between the floor 100 and the ceiling 110 (for example, a commercial facility such as a large-scale retail store), the temperature ranges from near the floor 100, where the temperature is relatively low, to near the ceiling 110, where the temperature is relatively high. There is a temperature gradient that gradually increases until In particular, relatively large temperature gradients can occur in room spaces of commercial facilities such as large-scale retail stores with high ceilings. In an indoor space where such a temperature gradient may occur, the intermediate layer portion Em (see FIG. 2) has a temperature that is moderate in the temperature distribution of the indoor space. In addition, in the indoor space, there is a large temperature difference between day and night due to the turning on and off of heating and cooling by an air conditioner. Therefore, there is a high possibility that dew condensation will occur on the ceiling 110, where warm air that can contain a lot of water vapor tends to gather due to the temperature difference. On the other hand, in the middle class portion Em of the indoor space that is not easily affected by the temperature of the floor 100 and the temperature of the ceiling 110, the temperature difference between day and night is smaller than that near the floor 100 and the ceiling 100. Therefore, the temperature state of the middle layer portion Em, which is far from the floor 100 and the ceiling 110, is relatively stable at a moderate temperature compared to the vicinity of the ceiling portion 110 and the vicinity of the floor 100.

In addition, in indoor spaces such as facilities such as large-scale retail stores where objects and people move frequently, dust, microorganisms, and mold spores that are scattered from the frequently moving people and objects or that are kicked up by the movement of those people and objects. A large amount of fine particles such as .

According to the air purification method using the air purifier 10 as described above in an indoor space in such an environment, while the temperature environment is relatively stable, many microscopic substances such as mold spores may float. The air collected from the middle layer portion Em is purified. Then, the purified air whose temperature is relatively stable is released in parallel along the ceiling 110, where air tends to stagnate nearby. In this way, fine particles such as mold spores are removed and air whose temperature is relatively stable is supplied to the surface of the ceiling 110, so that air can be effectively removed from the indoor space where people and objects frequently move. Fine particles such as mold spores can be removed (purified), and air stagnation near the ceiling 110 can be prevented to prevent dew condensation on the ceiling 110, resulting in mold growth on the ceiling 110. can be effectively prevented.

In the embodiment described above, the middle layer portion Em that collects air has a height h1 of a quarter from the floor 100 and a height h2 of a half from the floor 100 in the space between the floor 100 and the ceiling 110. However, in an indoor space with a relatively high ceiling, the height may be set as a range of 1 meter or more and up to 2 meters from the floor 100.

Further, in the above-described embodiment, the purified air from the air purifier 10 is blown out to the upper half region Euu of the upper layer portion Eu, but the upper layer portion Eu It may be blown out in any range. However, discharging purified air as close to the ceiling 110 as possible in the upper half range Euu of the upper layer portion Euu will continue to efficiently send clean air with a stable temperature state to the surface of the ceiling 110. This is more preferable in that air stagnation near the ceiling 110 can be more effectively prevented.

Further, it is sufficient that air is collected from the intermediate layer portion Em, and in addition to the intermediate layer portion E, air may be collected from a region deviating from the intermediate layer portion E.

The room to which the air cleaning method according to the present invention is applied is not limited to commercial facilities such as large-scale retail stores as described above. However, it is preferable that the room has a relatively high ceiling.

Furthermore, the air cleaning method according to the present invention is not limited to using the air cleaning device 10 having the above-described structure, but can also use air cleaning devices having other structures.

Although the embodiments of the present invention have been described above, the embodiments described above are presented as examples, and are not intended to limit the scope of the invention. These novel embodiments described above can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. The embodiments described above are within the scope and gist of the invention, and are also included in the invention described in the claims.

According to the air purification method and air purification device according to the present invention, it is possible to effectively remove fine particles from indoor spaces where people and objects frequently move, and also to effectively prevent the growth of mold on the ceiling. The present invention is useful as an air cleaning method and an air cleaning device for cleaning the air in a room that has a space between the ceiling and the floor.

10 Air purifier 11 Upper block 11a Rising part 11b Projection part 11pth Upper ventilation passage 12 Intermediate block 12dct Duct 13 Lower block 13pth Lower ventilation passage 14a, 14b Air outlet 15a, 15b, 15c Intake port 16 Blower 17 Purifier 100 Floor 11 0 ceiling 120 pillars

Claims (6)

An air purification method for purifying the air in a room having a space sandwiched between a floor and a ceiling, the method comprising:
a first step of collecting air from an intermediate layer portion between a quarter height from the floor and a half height from the floor in a space between the floor and the ceiling;
a second step of purifying the collected air;
A third step of discharging the purified air to an upper quarter portion of the ceiling side in the space between the floor and the ceiling. An air purification method for purifying the air in a room having a space sandwiched between a floor and a ceiling, the method comprising:
a first step of collecting air from an intermediate layer portion at a height of 1 meter or more and up to 2 meters above the floor;
a second step of purifying the collected air;
A third step of discharging the purified air to the upper quarter portion of the ceiling side in the space between the floor and the ceiling above the middle layer portion. 3. The air cleaning method according to claim 1, wherein the third step discharges the purified air within an upper half of the upper portion in the height direction. 4. The air cleaning method according to claim 3, wherein in the third step, air is discharged in a direction parallel to the surface of the ceiling. 5. The air cleaning method according to claim 4, wherein in the third step, air is discharged along the surface of the ceiling. An air cleaning device used in the air cleaning method according to any one of claims 1 to 5,
An upper block formed with an air outlet that releases air forward;
a middle block that is provided to hang down from the upper block and is formed with a duct that extends from an end on the upper block side to the other end;
a lower block that is connected to an end of the middle block on the side opposite to the upper block and has an intake port formed therein;
The upper block is formed with an upper ventilation passage that communicates with the duct of the middle block and continues to the air outlet,
A lower ventilation passage is formed in the lower block and communicates with the duct of the middle block and continues to the intake port,
Further, a blower that introduces air from the intake port and discharges the air from the outlet through the lower ventilation passage, the duct, and the upper ventilation passage;
An air purifying device comprising: a purifier that purifies air introduced from the intake port.

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