Outdoor air cleaning system

Abstract

An outdoor air purification system includes: a partition surrounding a purification space to isolate the purification space from an external space and having at least one opening connecting the purification space to the external space; an air purification device configured to supply purified air to the purification space; and a controller configured to control the air purification device. The degree of openness is defined as the ratio of the opening's area to the surface area of ​​the partition to about 10% or more and about 50% or less.

Description

TECHNICAL FIELD

[0001] The disclosure relates to an air cleaning system installed outdoors. BACKGROUND

[0002] As air pollution caused by particulate matter (PM), harmful gases, etc. becomes more serious, attempts are being made to purify air in a specific outdoor area for safe outdoor activities. Such attempts to purify outdoor air include a method of manufacturing an existing indoor air purification device in a large size and installing it outdoors, a method of washing away pollutants by artificial rain, an airflow method based on breaking atmospheric inversion layers, etc. However, in the above-described methods, since air flow occurs in an open outdoor space or the like, a large air purification facility is required to secure a large purification area, and it is also not easy to efficiently remove pollutants such as particulate matter. SUMMARY

[0003] Provided is an air cleaning system capable of efficiently forming a purification area in an outdoor space.

[0004] Additional aspects will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and / or can be learned by practice of example implementations of the disclosure.

[0005] According to an aspect of some example implementations, an outdoor air cleaning system includes a partition surrounding a purification space to isolate the purification space from an external space and having at least one opening connecting the purification space to the external space, an air purification device configured to supply purified air to the purification space, and a controller configured to control the air purification device, wherein the degree of openness is about 10% or more and about 50% or less.

[0006] The degree of openness can be about 20% or more.

[0007] The volume of the purification space can be about 100,000 cubic meters or less.

[0008] At least a portion of the partition can be transparent.

[0009] The outdoor air cleaning system can further include a movable wall arranged to open and close at least a portion of the opening.

[0010] The partition can include a side wall forming a horizontal boundary between the purification space and the external space, and an upper wall forming a vertical boundary between the purification space and the external space, and the opening can be in at least one of the side wall and the upper wall.

[0011] The outdoor air cleaning system can further include a temperature adjustment device configured to form a temperature gradient between the purification space and the external space.

[0012] The outdoor air cleaning system can further include a blocking device configured to block the unclean air from flowing into the purification space from the outside space through the opening.

[0013] The outdoor air cleaning system can further include a vertical flow device configured to receive the cleaned air from the air purification device and form a downward air flow from an upper portion of the purification space, wherein the blocking device can include a horizontal flow device configured to receive the cleaned air from the air purification device and form a horizontal air flow along the side wall within the purification space.

[0014] The opening can include a first opening in the side wall, and the blocking device can include a vertical blocking device at a vertical edge of the first opening configured to eject the cleaned air supplied from the air purification device vertically over the first opening.

[0015] The vertical blocking device can eject the cleaned air toward the purification space at an angle with respect to a vertical direction.

[0016] The vertical blocking device can include a downward blocking device at an upper edge of the first opening configured to eject the cleaned air downward.

[0017] The vertical blocking device can include an upward blocking device at a lower edge of the first opening configured to eject the cleaned air upward.

[0018] The blocking device can include a horizontal blocking device at a horizontal edge of the first opening configured to eject the cleaned air horizontally over the first opening.

[0019] The horizontal blocking device can eject the cleaned air toward the purification space at an angle with respect to a horizontal direction.

[0020] The opening can include a second opening in the upper wall, and the blocking device can include a streamlined dome structure surrounding the second opening.

[0021] According to an aspect of some example embodiments, an outdoor air cleaning system includes a partition surrounding a purification space to isolate the purification space from an outside space and having at least one opening connecting the purification space to the outside space, and an air purification device configured to supply cleaned air to the purification space, wherein an openness degree is about 20% or more.

[0022] At least a portion of the partition can be transparent.

[0023] The outdoor air cleaning system can further include a movable wall arranged to open and close at least a portion of the opening.

[0024] The openness, defined as the ratio of the area of the opening to the surface area of the partition, can be about 50% or less. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other aspects, features, and advantages of some example embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 is a configuration diagram of an air cleaning system according to some example embodiments;

[0027] Figure 2 shows a partition according to some example embodiments;

[0028] Figure 3 is a diagram showing a blocking device according to some example embodiments;

[0029] Figure 4 is a diagram showing a blocking device according to some example embodiments;

[0030] Figure 5 is a configuration diagram of an air cleaning system according to some example embodiments; Figure 4 is a sectional view of the blocking device shown;

[0031] Figure 6 is a diagram showing a blocking device according to some example embodiments;

[0032] Figure 7 is a configuration diagram of an air cleaning system according to some example embodiments; Figure 6 is a sectional view of the blocking device shown;

[0033] Figure 8 is a diagram showing a blocking device according to some example embodiments;

[0034] Figure 9 is a perspective view showing an example of an air cleaning system installed at a bus stop according to some example embodiments;

[0035] Figure 10 is a perspective view showing an example of an air cleaning system installed at a bus terminal according to some example embodiments;

[0036] Figure 11 is a perspective view showing an example of an air cleaning system installed at a playground according to some example embodiments; and

[0037] Figure 12 is a perspective view showing an example of an air cleaning system installed in a courtyard of a building according to some example embodiments. DETAILED DESCRIPTION

[0038] Reference will now be made in detail to the example embodiments, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. In this regard, the presented example embodiments can be variously embodied and should not be construed or interpreted as being limited to the description set forth herein. Thus, the following detailed description is not intended to limit the scope of the present disclosure, but is merely intended to describe some example embodiments thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Expressions such as "at least one of," when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.

[0039] Hereinafter, some example embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals can denote the same elements, and the size of each element can be exaggerated for clarity and ease of description.

[0040] When the term "about" is used in this specification in connection with a numerical value, it means that the relevant numerical value includes a tolerance of ±10% around the numerical value. When a range is specified, the range includes all values therebetween, such as in increments of 0.1%.

[0041] Figure 1 is a configuration diagram of an air cleaning system according to some example embodiments. Referring to Figure 1 According to some example embodiments, the air cleaning system can include a partition 3 defining a purification space 2, an air purification device 4 supplying purified air to the purification space 2. The partition 3 can surround the purification space 2 to isolate the purification space 2 from the outside space 1. The partition 3 can partially isolate the purification space 2 from the outside space 1. The partition 3 can have one or more openings 31 connecting the purification space 2 to the outside space 1. The purification space 2 can be, for example, a bus stop, a playground, a rest space in a park, a bus terminal, a school playground, an outdoor stadium, a courtyard of a building, etc.

[0042] The partition 3 can be a man-made structure for isolating the purification space 2 from the outside space 1. For example, the partition 3 can surround a bus stop, a playground, a rest space in a park, or a bus terminal to partially isolate the bus stop, the playground, the rest space in the park, or the bus terminal from the outside space 1. In addition, the partition 3 can be implemented by a structure itself requiring the purification space 2. For example, in the case of a stadium, the partition 3 can be implemented by a structure including stands and walls surrounding a central playing field. In the case of a courtyard of a building, the partition 3 can be implemented by a building structure surrounding the courtyard.

[0043] The purification space 2 can be connected to the outside space 1 through the opening 31. That is, the openness of the purification space 2 can be maintained by the opening 31. The opening 31 can have a size capable of securing the self-purpose of the purification space 2. For example, in the case of a bus stop, the opening 31 can have a position, shape, and size for functioning as a passage for passengers waiting for a bus to move from the outside space 1 to the purification space 2 and vice versa. In the case of a playground, a rest space in a park, an outdoor stadium, etc., the opening 31 can have a position, shape, and size for functioning as an entrance passage for users, and an additional opening 31 can be formed in the partition 3 so that the playground, the rest space in the park, the outdoor stadium, etc. can be open to the sky. In the case of a courtyard of a building, the opening 31 can be formed in the partition 3 so that the courtyard can be open to the sky (upward). One or more openings 31 can be formed in the partition 3 to maintain the functionality and openness suitable for the purpose of use of a facility in which the air cleaning system is applied.

[0044] The air purification device 4 can be a filter device, an electrostatic device, a plasma device, a catalyst device, and / or an adsorption device, and can purify air by various purification methods such as a filter method, an electrostatic method, a plasma method, a catalyst method, and / or an adsorption method. The purified air can be supplied to the purification space 2. The air purification device 4 can be installed outside the partition 3 to purify air of the outside space 1 and supply the purified air to the purification space 2. The air purification device 4 can be installed in the purification space 2 to purify air within the purification space 2. The air purification device 4 can be installed in each of the outside space 1 and the purification space 2. The air purification device 4 can be manufactured to supply purified air having, for example, a particulate matter concentration reduced by about 50% or more compared to outside air based on PM2.5.

[0045] The air cleaning system can include an air sensor 5 for measuring air quality. The air sensor 5 can be installed in the outside space 1 or the purification space 2 or both. The air sensor 5 can measure air quality within the purification space 2. The air sensor 5 can measure air quality of the outside space 1 around the purification space 2.

[0046] The air sensor 5 can include a particulate matter sensor 53 for measuring a particulate matter concentration in air. The air sensor 5 can further include a temperature sensor 51 and a humidity sensor 52 for measuring a temperature and a humidity of air. Although not shown in the drawings, the air sensor 5 can further include a wind speed sensor for measuring an air flow rate in the outside space 1, a gas detection sensor for detecting a gas component in air of the purification space 2, etc.

[0047] Various types of known sensors can be used as the particulate matter sensor 53. For example, the particulate matter sensor 53 can include a flow meter unit for causing an air flow and measuring a flow rate, and a sensing unit for detecting particulate matter in the air. The sensing unit can be a light scattering device, a weight device, and / or an inertial mass device, and can measure the amount of particulate matter in the air through various detection methods, such as a light scattering type, a weight type, and / or an inertial mass type. The light scattering type detection method can irradiate light to a measurement region through which the air passes and receive light scattered by the particulate matter to measure the amount of particulate matter. The weight type detection method can pass the air through a filter in the sensor, collect the particulate matter, and measure the amount of the collected particulate matter. The inertial mass type detection method can set the particulate matter to settle at a specific location and then indirectly measure the weight thereof.

[0048] The controller 9 can control the air purification device 4 based on the detection value of the air sensor 5. The controller 9 can turn on / off the air purification device 4 or control the operation speed of the air purification device 4 based on the detection value of the air sensor 5.

[0049] According to the related art outdoor air cleaning system, the air purification device 4 is installed in the outside space 1. Purified air is supplied around the air purification device 4. Since the purification space 2 to which the purified air is supplied is not isolated from the outside space 1, the air flow generated in the outside space 1 passes through the purification space 2 as it is. Thus, even when the purified air is supplied to the purification space 2, it is difficult to maintain the purified air in the purification space 2, and since its air is mixed with the un-purified air introduced from the outside space 1, it is difficult to maintain the degree of air cleaning of the purification space 2. In addition, since the capacity of the air purification device 4 required per unit volume of the purification space 2 that can be secured is so large, it is difficult to secure economic efficiency and utility.

[0050] According to some example embodiments, the purification space 2 can be partially isolated from the outside space 1 by the partition 3. The air within the purification space 2 and the air in the outside space 1 can be partially isolated from each other by the partition 3. The influence of the air flow of the outside space 1 on the purification space 2 can be reduced, and thus the mixing of the purified air supplied to the purification space 2 and the un-purified air of the outside space 1 can be reduced. In addition, the purification space 2 can be partitioned by the partition 3 into a space in which the purified air can stay and circulate. Since the purification space 2 can be partially isolated from the outside space 1, the degree of air cleaning of the purification space 2 can be maintained at a suitable level by using the air purification device 4 having a smaller purification capacity than the related art outdoor air cleaning system. This can mean an improvement in air purification efficiency relative to the cost of the air cleaning system, and the feasibility of the outdoor air cleaning system can be secured.

[0051] The size and / or number of the openings 31 can be determined in consideration of openness of the purification space 2 and functionality of the openings 31. The size of the openings 31 can be defined by an openness degree, which is defined as an area ratio of the openings 31 with respect to a surface area of the partition 3, as shown in the following equation.

[0052] Openness degree = {(Area of openings) / (Surface area of partition)} x 100 (%)

[0053] As a minimum condition for securing openness of the purification space 2 and functionality of the openings 31, the openness degree can be about 10% or more. When the openness degree is less than about 10%, the purification space 2 can not be distinguished from an interior space of a building, and it can be difficult to be regarded as an outdoor air cleaning system.

[0054] The openness degree of the partition 3 can be about 20% or more in order to define a realistic purification space 2 that is capable of securing openness and functionality and is installed in an outdoor space such as a rest space in a bus stop, a playground, a bus terminal, or a park.

[0055] An excessively high openness degree can be disadvantageous for maintaining the degree of air cleaning of the purification space 2. An upper limit of the openness degree can be determined in consideration of efficiency of the air cleaning device 4 and economic efficiency of installation cost of the air cleaning device 4, which is capable of maintaining the degree of air cleaning of the purification space 2 at a desired degree while securing openness of the purification space 2 and functionality of the openings 31. In consideration of this, the openness degree can be about 50% or less, and thus a particulate matter reduction efficiency of about 50% or more of the purification space 2 can be achieved. In addition, a clean air maintenance efficiency of the purification space 2 can be maintained at about 50% or more.

[0056] The partition 3 can include a side wall 32 forming a horizontal boundary of the purification space 2 and an upper wall 33 forming a vertical boundary of the purification space 2. One or more openings 31 can be provided in at least one of the side wall 32 and the upper wall 33. In Figure 1 In some example embodiments shown, one opening 31 can be provided in the side wall 32. The area of the opening 31 can be about 10% or more of a surface area of the side wall 32 and the upper wall 33 including the opening 31. In consideration of openness and functionality, the area of the opening 31 can be about 20% or more of the surface area of the side wall 32 and the upper wall 33 including the opening 31. In consideration of efficiency and economic efficiency of the air cleaning system, the area of the opening 31 can be about 50% or less of the surface area of the side wall 32 and the upper wall 33 including the opening 31.

[0057] To achieve a high degree of openness even at a low degree of openness, at least a portion of the partition 3 can be transparent. For example, at least a portion of the side wall 32 can be transparent, and the upper wall 33 can also be partially or completely transparent. Although not shown in the drawings, solar cells for solar power generation can be installed on the upper wall 33. For example, the air cleaning system can include an energy storage system (ESS) for storing electricity generated by the solar cells. Electricity stored in the energy storage system can be used as energy for driving the air purification device 4, the air sensor 5, the temperature adjustment device 6, the controller 9, etc. Thus, an eco-friendly air cleaning system can be implemented.

[0058] When the volume of the purification space 2 is excessively large, the installation cost of the air purification device 4 for maintaining the degree of air cleaning of the purification space 2 can be excessively increased, and thus the efficiency and economic efficiency thereof can be reduced. In consideration of this, the volume of the purification space 2 can be about 100,000 cubic meters or less.

[0059] When the degree of air cleaning within the purification space 2 is very low, it can be necessary to rapidly increase the degree of air cleaning of the purification space 2. For example, in the case of a bus stop, a playground, a rest space in a park, a school playground, a bus terminal, a courtyard of a building, etc., since there are no users at midnight, the controller 9 can not operate the air purification device 4 at midnight. In the case of a stadium, the controller 9 can not operate the air purification device 4 when the stadium is not used. For example, the degree of air cleaning of the purification space 2 can decrease. When the bus stop, the playground, the rest space in the park, the school playground, the bus terminal, the courtyard of the building, etc. are to be reused during the day, or when the stadium is to be used, it can be necessary to rapidly increase the degree of air cleaning of the purification space 2.

[0060] To this end, the air cleaning system can include a movable barrier or a movable wall 34 for opening and closing at least a portion of the opening 31. When it is necessary to rapidly increase the degree of air cleaning of the purification space 2, the controller 9 can drive the movable wall 34 to completely or partially block the opening 31 to isolate the purification space 2 from the outside space 1, and can drive the air purification device 4 to supply purified air to the purification space 2. Thus, the degree of air cleaning of the purification space 2 can be rapidly increased. When the degree of air cleaning of the purification space 2 reaches a target degree of cleaning, the controller 9 can drive the movable wall 34 to open the opening 31.

[0061] The movable wall 34 of some example embodiments can be rotatably installed at the side wall 32 to move to a position for opening the opening 31 and a position for closing the opening 31. The shape of the movable wall 34 can vary according to various example embodiments. For example, the movable wall 34 can be implemented in a bellows (or an accordion) shape that can be installed at the side wall 32 or the upper wall 33 to be reduced / enlarged in a vertical direction or a horizontal direction. Although not shown in the drawings, when the opening 31 is provided in the upper wall 33, the movable wall 34 can be installed at the upper wall 33.

[0062] The movable wall 34 can be used to open and close the opening 31 in response to external weather changes to protect the purification space 2.

[0063] Figure 2 Some example embodiments of the partition 3 are shown. Referring to Figure 2 , the partition 3 can be generally cylindrical and can isolate the purification space 2 from the external space 1. A plurality of first openings 31-1 can be provided in the side wall 32 that forms a horizontal boundary of the purification space 2. The plurality of first openings 31-1 can serve as an entrance to the purification space 2. The upper wall 33 that forms a vertical boundary of the purification space 2 can serve as a top. Second openings 31-2 and 31-3 can be provided in the upper wall 33. Movable walls 34-1 and 34-2 can be provided to open and close the second openings 31-2 and 31-3, respectively. Although not shown in the drawings, movable walls for opening and closing the first openings 31-1 can be provided. At least a portion of the side wall 32 can be transparent. At least a portion of the upper wall 33 can be transparent. For example, the movable walls 34-1 and 34-2 can be transparent.

[0064] The sum of the areas of the first openings 31-1 and the second openings 31-2 and 31-3 can be about 10% or more of the surface area of the side wall 32 and the upper wall 33. In consideration of openness and functionality, the sum of the areas of the first openings 31-1 and the second openings 31-2 and 31-3 can be about 20% or more of the surface area of the side wall 32 and the upper wall 33. In consideration of the efficiency and economic efficiency of the air cleaning system, the sum of the areas of the first openings 31-1 and the second openings 31-2 and 31-3 can be about 50% or less of the surface area of the side wall 32 and the upper wall 33. The purification space 2 can be, for example, a playground, a school playground, a rest space in a park, etc.

[0065] The partition 3 is not limited to Figure 1 and Figure 2 the examples shown and can be implemented in various shapes including functional structures and aesthetic structures.

[0066] Referring back to Figure 1The air cleaning system can further comprise a temperature regulating device 6. The temperature regulating device 6 can regulate the internal temperature of the purification space 2. The temperature regulating device 6 can comprise, for example, an air conditioner (cooler) and / or a heater. The temperature regulating device 6 can receive the purified air from the air purification device 4, cool or heat the purified air to a desired temperature, and supply the resulting air to the purification space 2. The temperature regulating device 6 can be installed within the purification space 2 to cool or heat the purified air to the desired temperature.

[0067] By the purified air supplied from the air purification device 4, the degree of air cleaning within the purification space 2 can be maintained at a suitable degree. The air cleaning system according to some example embodiments, the purification space 2 can be connected to the outside space 1 through the opening 31. Thus, the outside unpurified air can flow into the purification space 2 through the opening 31. Therefore, a blocking device can be required to block the outside unpurified air from flowing into the purification space 2 through the opening 31.

[0068] As an example, the temperature regulating device 6 can form a temperature gradient between the purification space 2 and the outside space 1, such that air can not flow into the purification space 2 from the outside space 1 through the opening 31. That is, the temperature regulating device 6 can form a temperature gradient between the purified air in the purification space 2 and the outside air in the outside space 1. The purified air and the outside air meet each other at the opening 31. Due to the temperature difference between the purified air and the outside air, the outside air can be partially blocked from flowing into the purification space 2 through the opening 31. Thus, the temperature regulating device 6 can function as a blocking device.

[0069] As an example, the air flow within the purification space 2 can be used to reduce or prevent the unpurified air from flowing into the purification space 2 or to allow only a small amount of unpurified air to flow therein. Figure 3 is a diagram illustrating a blocking device according to some example embodiments. In some example embodiments, the air supply structure for supplying air to the purification space 2 can itself also function as a blocking device. Referring to Figure 3 The air cleaning system can comprise a vertical flow device 110 that can receive the purified air from the air purification device 4 and form a downward air flow 113 from an upper portion of the purification space 2. The blocking device can comprise a horizontal flow device 120 that can receive the purified air from the air purification device 4 and form a horizontal air flow 123 within the purification space 2 along the side wall 32.

[0070] The vertical flow device 110 can be connected to the air purification device 4 and can be installed at the upper wall 33. The vertical flow device 110 can include an air discharge port 112 that is open downward. The air discharge port 112 can have a shape extending in the horizontal direction. Although not shown in the drawings, the air discharge port 112 can be implemented by a plurality of air discharge ports arranged in the horizontal direction. Although not shown in the drawings, the vertical flow device 110 can include a blower for discharging the purified air received from the air purification device 4 through the air discharge port 112. The blower can be controlled by the controller 9.

[0071] The horizontal flow device 120 can be connected to the air purification device 4 and can be installed at the side wall 32. The horizontal flow device 120 can include an air discharge port 122 that is open in the horizontal direction. The air discharge port 122 can have a shape extending in the vertical direction. Although not shown in the drawings, the air discharge port 122 can be implemented by a plurality of air discharge ports arranged in the vertical direction. Although not shown in the drawings, the horizontal flow device 120 can include a blower for discharging the purified air received from the air purification device 4 through the air discharge port 122. The blower can be controlled by the controller 9.

[0072] According to this configuration, the downward air flow 113 and the horizontal air flow 123 can be merged with each other to integrally form an air flow circulating in the horizontal direction along the side wall 32 within the purification space 2. The air flow circulating in the horizontal direction can form a barrier wall for blocking the un-purified external air introduced through the opening 31. Accordingly, the external air flowing into the purification space 2 through the opening 31 provided in the side wall 32 or the openings 31-1, 31-2, and 31-3 provided in the side wall 32 and the upper wall 33 as shown can be blocked, or the amount of the external air flowing thereinto can be reduced. Figure 2

[0073] The horizontal flow device 120 can eject the purified air toward the purification space 2 at an angle with respect to the horizontal direction. For example, the air discharge port 122 can be formed to be inclined toward the purification space 2 with respect to the horizontal direction. According to this configuration, since the purified air ejected through the air discharge port 122 can be directed toward the purification space 2, the amount of the purified air leaking to the external space 1 can be reduced.

[0074] Figure 4 FIG. 1 is a view showing an air purification system according to some example embodiments. In FIG. 1, an air purification system 1 is installed in a room 10. The air purification system 1 includes a purification space 2, an air purification device 4, and a controller 9. Figure 4 In FIG. 1, an air supply structure for supplying the purified air from the air purification device 4 to the purification space 2 is omitted, and only a structure of a blocking device is shown. For the air supply structure, refer to FIG. 2. Figure 4 ​The first opening 31a can be provided in the side wall 32. The blocking device can include a vertical blocking device installed at a vertical edge of the first opening 31a to inject the purified air vertically over the first opening 31a. The vertical blocking device can be connected to the air purification device 4 to inject the purified air supplied from the air purification device 4. The vertical blocking device can suck and inject the air within the purification space 2.

[0075] The vertical edge of the first opening 31a can include an upper edge 31a-1. The vertical blocking device can include a downward blocking device 130 installed at the upper edge 31a-1 of the first opening 31 to inject the purified air downward. The downward blocking device 130 can include an air discharge port 131 that is open downward. The air discharge port 131 can have a shape extending in a horizontal direction along the upper edge 31a-1. Although not shown in the drawings, the air discharge port 131 can be implemented by a plurality of air discharge ports arranged in a horizontal direction. Although not shown in the drawings, the downward blocking device 130 can include a blower for discharging the purified air received from the air purification device 4 or the air within the purification space 2 through the air discharge port 131. By the downward blocking device 130, a downward air current 135 can be formed vertically over the first opening 31a. The downward air current 135 can serve as an air curtain that crosses the first opening 31a in a vertical direction. Accordingly, since the un-purified air can be blocked by the downward air current 135, the un-purified air can not flow into the purification space 2 through the first opening 31a, or the inflow of the un-purified air can be reduced.

[0076] The vertical edge of the first opening 31a may include a lower edge 31a-2. A vertical blocking device may include an upward blocking device 140 mounted at the lower edge 31a-2 of the first opening 31 to eject purified air upwards. The lower edge 31a-2 of the first opening 31 may be essentially the ground on which the partition 3 is mounted. The upward blocking device 140 may be connected to the air purification device 4 and may include an upwardly opening air outlet 141. The air outlet 141 may have a shape extending horizontally along the lower edge 31a-2. Although not shown in the figures, the air outlet 141 may be implemented by a plurality of air outlets arranged horizontally. Although not shown in the figures, the upward blocking device 140 may include a blower for discharging purified air received from the air purification device 4 or air within the purified space 2 through the air outlet 141. An upward airflow 145 may be formed vertically across the first opening 31a by the upward blocking device 140. The upward airflow 145 can be used as an air curtain that passes vertically through the first opening 31a. Therefore, since unpurified air can be blocked by the upward airflow 145, unpurified air will not flow into the purification space 2 through the first opening 31a, or the inflow of unpurified air can be reduced. In addition, since the upward blocking device 140 can block the outside air flowing near the ground, the upward blocking device 140 can effectively prevent dust on the ground from flowing into the purification space 2.

[0077] Figure 5 yes Figure 4 A cross-sectional view of the blocking device shown. (Refer to...) Figure 5 The vertical blocking device can spray purified air towards the purification space 2 at an angle relative to the vertical direction. For example, the downward air outlet 131 and the upward air outlet 141 can be formed to be inclined relative to the vertical direction towards the purification space 2. With this configuration, since the purified air sprayed through the downward air outlet 131 and the upward air outlet 141 can be directed towards the purification space 2, the leakage of purified air to the external space 1 can be reduced.

[0078] Figure 6 This is a diagram illustrating a blocking device according to some example embodiments. Figure 6 The air supply structure for supplying purified air from the air purification device 4 to the purification space 2 is omitted, and only the structure of the barrier device is shown. (Refer to...) Figure 6The first opening 31a can be provided in the side wall 32. The blocking device can include a horizontal blocking device 150 installed at one or more of horizontal edges 31a-3 and 31a-4 of the first opening 31a to inject the purified air horizontally across the first opening 31a. The horizontal blocking device 150 can be connected to the air purifying device 4 to inject the purified air supplied from the air purifying device 4. The horizontal blocking device 150 can suck and inject the air within the purification space 2.

[0079] In some example embodiments, the horizontal blocking device 150 can be installed at each of the horizontal edges 31a-3 and 31a-4 of the first opening 31a to inject the air in opposite directions in the horizontal direction. The horizontal blocking device 150 can be connected to the air purifying device 4 and can include an air discharge port 151 that is open in the horizontal direction. The air discharge port 151 can have a shape extending in the vertical direction along the horizontal edges 31a-3 and 31a-4. Although not shown in the drawings, the air discharge port 151 can be implemented by a plurality of air discharge ports arranged in the vertical direction. Although not shown in the drawings, the horizontal blocking device 150 can include a blower for discharging the purified air received from the air purifying device 4 or the air of the purification space 2 through the air discharge port 151. By the horizontal blocking device 150, an air flow 155 can be formed horizontally across the first opening 31a. The air flow 155 can serve as an air curtain that crosses the first opening 31a in the horizontal direction. Accordingly, since the un-purified air can be blocked by the air flow 155, the un-purified air can not flow into the purification space 2 through the first opening 31a, or the inflow of the un-purified air can be reduced. Figure 4 The blocking device shown can be applied in combination with Figure 6 the blocking device shown.

[0080] Figure 7 is Figure 6 is a sectional view of the blocking device shown. Referring to Figure 7 , the horizontal blocking device 150 can inject the purified air toward the purification space 2 at an angle with respect to the horizontal direction. For example, the air discharge port 151 can be formed to be inclined toward the purification space 2 with respect to the horizontal direction. According to this configuration, since the purified air injected through the air discharge port 151 can be directed toward the purification space 2, the amount of leakage of the purified air to the outside space 1 can be reduced.

[0081] Figure 8 is a view showing a blocking device according to some example embodiments. In Figure 8 , the main supply structure for supplying the purified air from the air purifying device 4 to the purification space 2 is omitted, and only the structure of the blocking device is shown. Referring to Figure 8The partition 3 can include a side wall 32 forming a horizontal boundary of the purification space 2 and an upper wall 33 forming a vertical boundary of the purification space 2. A plurality of first openings 31-1 can be provided in the side wall 32. A second opening 31-2 can be provided in the upper wall 33. The blocking device of some example embodiments can reduce or prevent the inflow of outside air into the purification space 2 through the second opening 31-2 by utilizing the air flow flowing along the upper wall 33 in the outside space 1. For example, referring to Figure 8 The blocking device can be implemented by a streamlined dome structure 160 provided around the second opening 31-2. The streamlined dome structure 160 can have a shape for guiding the outside air flowing along its outer surface to flow outside over the second opening 31-2. By this configuration, the inflow of outside air into the purification space 2 through the second opening 31-2 can be reduced or prevented, or the inflow of outside air can be reduced. In addition, when the outside air flows along the streamlined dome structure 160 over the second opening 31-2, a negative pressure can be generated around the second opening 31-2. Thus, since the air flow from the purification space 2 to the outside space 1 can be formed around the second opening 31-2, it can be difficult for the outside air to pass through the second opening 31-2 and then flow into the purification space 2.

[0082] The example embodiments of the air cleaning system described above can be applied in various ways.

[0083] Figure 9 is a perspective view illustrating an example of an air cleaning system installed at a bus stop. Referring to Figure 9 The purification space 2 can be defined by a partition 3. The purification space 2 can be a waiting space for passengers to wait for a bus. The opening 31 can serve as an entrance for the passengers. An air purification device 4 can be installed outside the side wall 32. The air purification device 4 can supply purified air to the purification space 2. A temperature adjustment device 6 can adjust the internal temperature of the purification space 2. At least a portion of the side wall 32 and the upper wall 33 can be transparent. A solar cell can be installed on the upper wall 33. Figures 3 to 7 The blocking device illustrated can be applied to Figure 9 the air cleaning system of the bus stop illustrated.

[0084] Figure 10 is a perspective view illustrating an example of an air cleaning system installed at a bus terminal. Referring to Figure 10The purification space 2 can be defined by a partition 3. The partition 3 can be implemented by a side wall 32 of the bus terminal, an upper wall 33, and one side wall 8 of the main building. The purification space 2 can be a bus boarding space. An opening 31 provided in the side wall 32 can be used as an entrance of the bus. Passengers can enter and exit the purification space 2 through the opening 31. In addition, although not shown in the drawings, passengers can enter and exit the purification space 2 through an entrance provided at one side wall 8 of the main building of the bus terminal. At least a portion of the side wall 32 and the upper wall 33 can be transparent. Solar cells can be installed on the upper wall 33. The air purification device 4 can be installed outside the purification space 2, and can supply purified air to the purification space 2 through a duct (not shown). The temperature adjustment device 6 can adjust the internal temperature of the purification space 2. Figures 3 to 7 The blocking device shown can be applied to Figure 10 The air cleaning system of the bus terminal shown.

[0085] Figure 11 is a perspective view showing an example of an air cleaning system installed in a game field. Refer to Figure 11 , Figure 2 The structure of the partition 3 shown can be used to define the purification space 2 by surrounding a game field in which a plurality of game devices are installed. The partition 3 of some example embodiments can include a substantially cylindrical side wall 32 and an upper wall 33 forming a top. A plurality of first openings 31-1 can be provided in the side wall 32. The plurality of first openings 31-1 can be used as an entrance of the purification space 2. At least a portion of the side wall 32 and the upper wall 33 can be transparent. Second openings 31-2 and 31-3 can be provided in the upper wall 33 to improve the openness of the game field. The second openings 31-2 and 31-3 can be opened and closed by movable walls 34-1 and 34-2. If necessary, the controller 9 can drive the movable walls 34-1 and 34-2 to close the second openings 31-2 and 31-3, or to partially or completely open the second openings 31-2 and 31-3. The movable walls 34-1 and 34-2 can be transparent. Although not shown in the drawings, a movable wall for opening and closing the first openings 31-1 can be provided. The air purification device 4 can supply purified air to the purification space 2. The temperature adjustment device 6 can adjust the internal temperature of the purification space 2. Figures 3 to 7 The blocking device shown can be applied to Figure 11 The air cleaning system of the game field shown.

[0086] Figure 12 is a perspective view showing an example of an air cleaning system installed in a courtyard of a building. Refer to Figure 12 ​​​​In some example embodiments, the courtyard can be the purification space 2. The partition 3 can be implemented by a building horizontally surrounding the courtyard. The upper portion of the courtyard can be open through the second opening 31-2. The air purification device 4 can supply the purified air to the purification space 2. The temperature adjustment device 6 can adjust the internal temperature of the purification space 2. Figure 8 The illustrated blocking device can be applied to block the inflow of the external air into the purification space 2 through the second opening 31-2. The blocking device can be implemented by a streamlined dome structure 160 provided around the second opening 31-2.

[0087] Any element disclosed above can include or be implemented as: processing circuitry, such as hardware including logic circuitry; a hardware / software combination, such as a processor running software; or a combination thereof. For example, the processing circuitry can more specifically include, but is not limited to, a central processing unit (CPU), an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a system on chip (SoC), a programmable logic unit, a microprocessor, an application specific integrated circuit (ASIC), etc.

[0088] According to some example embodiments of the air cleaning system, outdoor air can be more efficiently cleaned by forming a purification space that is somewhat isolated from the outside space while maintaining a sense of openness.

[0089] It should be understood that the example embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each example embodiment should typically be considered as being applicable in a similar manner to other similar features or aspects in other example embodiments. While one or more example embodiments have been described with reference to the attached drawings, the skilled artisan will appreciate that various changes can be made in form and detail, without departing from the spirit and scope of what is defined by the appended claims.

[0090] This application claims the benefit of Korean Patent Application No. 10-2019-0160001, filed December 4, 2019, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.

Claims

1. An outdoor air cleaning system, comprising: A partition surrounding a purification space to isolate the purification space from an external space, and having at least one opening connecting the purification space to the external space; An air purification device configured to supply purified air to the purified space; A blocking device, configured to block unpurified air from flowing into the purified space from the external space through the opening, is disposed at opposite edges of the opening and sprays the purified air toward each other; as well as The controller is configured to control the air purification device. The openness level is 10% or higher and 50% or lower. The degree of openness is the ratio of the area of ​​the at least one opening to the total surface area of ​​the partition surrounding the clean space.

2. The outdoor air cleaning system according to claim 1, wherein the openness is 20% or higher.

3. The outdoor air cleaning system according to claim 1, wherein the volume of the purified space is 100,000 cubic meters or less.

4. The outdoor air cleaning system of claim 1, wherein at least a portion of the separator is transparent.

5. The outdoor air cleaning system of claim 1 further includes a movable wall arranged to open and close at least a portion of the opening.

6. The outdoor air cleaning system according to claim 1 further includes a temperature regulating device configured to form a temperature gradient between the cleaned space and the external space.

7. The outdoor air cleaning system according to claim 1, wherein... The partition includes a sidewall and a top wall, the sidewall forming a horizontal boundary between the purified space and the external space, and the top wall forming a vertical boundary between the purified space and the external space; and The opening is in at least one of the side wall and the top wall.

8. The outdoor air cleaning system according to claim 7, wherein... The opening includes a first opening in the sidewall, and The blocking device includes vertical blocking devices at opposite vertical edges of the first opening, the vertical blocking devices being configured to eject purified air supplied from the air purification device vertically across the first opening.

9. The outdoor air cleaning system of claim 8, wherein the vertical blocking device is configured to spray purified air toward the purification space at an angle relative to the vertical direction.

10. The outdoor air cleaning system of claim 8, wherein the vertical blocking device includes a downward blocking device at the upper edge of the first opening and an upward blocking device at the lower edge of the first opening, the downward blocking device being configured to spray purified air downward and the upward blocking device being configured to spray purified air upward.

11. The outdoor air cleaning system according to claim 7, wherein The opening includes a first opening in the sidewall, and The blocking device includes horizontal blocking devices at opposite horizontal edges of the first opening, the horizontal blocking devices being configured to spray purified air supplied from the air purification device horizontally across the first opening.

12. The outdoor air cleaning system of claim 11, wherein the horizontal blocking device is configured to spray purified air toward the purification space at an angle relative to the horizontal direction.

13. The outdoor air cleaning system according to claim 7, wherein... The opening includes a second opening in the upper wall, and The blocking device includes a streamlined dome structure surrounding the second opening.

14. An outdoor air cleaning system, comprising: A partition surrounding a purification space to isolate the purification space from an external space, and having at least one opening connecting the purification space to the external space; An air purification device configured to supply purified air to the purified space; as well as A blocking device, configured to prevent unpurified air from flowing into the purified space from the external space through the opening, is positioned at opposite edges of the opening and sprays purified air toward each other. Among them, the openness level is 20% or higher, and The degree of openness is the ratio of the area of ​​the at least one opening to the total surface area of ​​the partition surrounding the cleanroom.

15. The outdoor air cleaning system of claim 14, wherein at least a portion of the separator is transparent.

16. The outdoor air cleaning system of claim 14, further comprising a movable wall arranged to open and close at least a portion of the opening.

17. The outdoor air cleaning system of claim 14, wherein the degree of openness, defined as the ratio of the area of ​​the opening to the surface area of ​​the partition, is 50% or less.

18. An outdoor air cleaning system, comprising: A partition surrounding a purification space to isolate the purification space from an external space, and having at least one opening connecting the purification space to the external space; An air purification device configured to supply purified air to the purified space; A blocking device configured to prevent unpurified air from flowing into the purified space from the external space through the opening; A vertical DC device is configured to receive purified air from the air purification device and to form a downward airflow from the upper part of the purification space; as well as The controller is configured to control the air purification device. Among them, the openness level is 10% or higher and 50% or lower. The degree of openness is defined as the ratio of the area of ​​the at least one opening to the total surface area of ​​the partition surrounding the cleanroom. The partition includes a side wall and a top wall. The side wall forms a horizontal boundary between the cleanroom and the external space, and the top wall forms a vertical boundary between the cleanroom and the external space. The opening is located in at least one of the side wall and the top wall. The blocking device includes a horizontal flow device configured to receive purified air from the air purification device and to form a horizontal airflow along the sidewall within the purification space. The downward airflow and the horizontal airflow merge with each other.

19. An outdoor air cleaning system, comprising: A partition surrounding a purification space to isolate the purification space from an external space, and having at least one opening connecting the purification space to the external space; An air purification device configured to supply purified air to the purified space; A blocking device configured to prevent unpurified air from flowing into the purified space from the external space through the opening; as well as A vertical DC device is configured to receive purified air from the air purification device and to form a downward airflow from the upper part of the purification space. Of these, those with an openness level of 20% or higher, The degree of openness is defined as the ratio of the area of ​​the at least one opening to the total surface area of ​​the partition surrounding the cleanroom. The partition includes a side wall and a top wall. The side wall forms a horizontal boundary between the cleanroom and the external space, and the top wall forms a vertical boundary between the cleanroom and the external space. The opening is located in at least one of the side wall and the top wall. The blocking device includes a horizontal flow device configured to receive purified air from the air purification device and to form a horizontal airflow along the sidewall within the purification space. The downward airflow and the horizontal airflow merge with each other.

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