WO2021040130A1 - Air density control system equipped with air conditioner mounted on rooftop - Google Patents

Abstract

Disclosed is an air density control system equipped with an air conditioner mounted on a rooftop. The air density control system of the present invention can generate an air zone filled with clean air in the surrounding space by means of discharging clean air from which fine dust has been removed using moss. The air density control system can be implemented in the form of a so-called "pergola." The air conditioner is used to generate a cooled high pressure air and the air conditioner is placed at the top of a pillar-shaped body.

Description

Air density control system with air conditioner mounted on rooftop

The present invention relates to an air density control system that is installed outdoors and controls the air density of a surrounding space to form an air shield surrounding a certain surrounding space, and fill and maintain the space with clean air.

Fine dust is a fine dust with a particle diameter of 10 μm or less, and is also called PM10. If the particle is less than 2.5μm, it is written as PM 2.5 and is also called'ultra-fine dust' or'extra-fine dust'. It is also called'ultra-fine dust' or'extra-fine dust'. In academic terms, it is called aerosol.

Fine dust is a major air pollutant because it contains sulfurous acid gas, nitrogen oxides, lead, ozone, and carbon monoxide, and it is small in mass and floats in the atmosphere for a long period of time and flows into the human respiratory system. Fine dust or ultra-fine dust introduced into the respiratory tract is known to be very harmful because it is not easily discharged, and it is the cause of extremely limiting the radius of action of people.

Fine dust is also caused by natural causes such as dust from sand breeze, volcanic ash, and forest fires, but also occurs in thermal power plants, exhaust gases from automobiles or factories, and heating appliances or gas appliances used in homes. Therefore, the concentration of fine dust in the atmosphere can be determined depending on what sources and how much are the sources of fine dust in our area. However, the cause of the increase in the concentration of fine dust in a specific area can be determined by more complex factors. On the other hand, vehicles running in urban areas are one of the major causes of air pollution because they emit nitrogen compounds in addition to tire dust and fine dust caused by road crushing.

So far, the solution to the problem of fine dust has been suggested to reduce the generation of fine dust, such as limiting the operation of a power plant or limiting vehicle operation, and wearing a mask or operating an air purifier inside the building. There is an expert opinion that 70% of fine dust that affects Korea comes from China. It is that fine dust introduced from the upper atmosphere has a significant effect.

As a device that purifies the outdoor air, there is a so-called Smog Free Tower equipped with a dust-collecting filter, but the effect is insignificant due to the mixture of the purified air and the collected fine dust because of the fine dust that collects as much as it is purified. , It is not effective enough to feel it.

Meanwhile, a so-called Pagora is a facility that is installed outdoors and provides a space for users to sit and relax. Usually, a plurality of pillars are installed on the ground and a ceiling is mounted on the ground. Sun protection is the primary function of most Pagora. Various technologies can be applied to the Pagora, such as energy-related technology using solar light, temperature control technology, and networking technology to which IT technology is applied.

An object of the present invention is to provide an air density control system that is installed outdoors and controls the air density of a surrounding space to form an air shied surrounding a certain surrounding space.

Another object of the present invention is to provide an air density control system including an air conditioner mounted on a rooftop to generate cooled high pressure air for forming an air film.

In order to achieve the above object, the present invention provides an air density control system installed outdoors and filled with high density air. The present invention takes advantage of the fact that when the cooled air is continuously supplied to the outdoor space, a cold air mass having a higher density than the surrounding air is formed.

The cold air mass provided by the air density control system of the present invention is filled with high-density cold air at the same time while simultaneously receiving a horizontal force toward a relatively low density surrounding hot air and a vertical force due to gravity. A certain space (air zone) is formed.

The air density control system of the present invention makes the space around the body including the body, the ceiling part cooling part, and the heater part into an air zone filled with cooled high-pressure air and prevents upper air from flowing into the air zone.

In the columnar body, at least one external device through which air from the surrounding space is introduced is provided on the outer surface, and a first circulation port through which the introduced air is discharged is provided on the upper surface. The ceiling part covers the surrounding space and blocks upper air from flowing into the surrounding space. A cooling part is provided between the main body and the ceiling part to cool the air discharged from the first circulation port to discharge cold air to the side along the lower surface of the ceiling part. A heater unit is provided on the ceiling unit and heats the air above the ceiling unit to discharge the air heated laterally along the upper surface of the ceiling unit. Accordingly, the air from the space around the main body flows into the main body and then cools down to fill the surrounding space again. The cold air forms a downward airflow to make the space around the main body a high-density air zone, and the heated air forms an upward airflow to block the upper air from flowing into the air zone along the downward airflow.

On the other hand, it is preferable that the cooling unit and the heater unit discharge the cold air and the heated air at a wind speed sufficient to proceed side by side to the outer room of the ceiling, so that a temperature reversal layer is created in the outer room of the ceiling.

According to an embodiment, an air density control system is provided at a front end of the cooling unit to guide the cold air to the side, but a cooling unit guide provided at a size smaller than the ceiling unit, and a cooling unit guide provided at the front end of the heater unit to guide the heated air to the side It may further include a heater guide provided in a size smaller than the ceiling portion.

According to another embodiment, the air density control system further includes another cooling unit guide provided between the cooling unit guide and the ceiling unit to guide cold air discharged from the cooling unit farther than the cooling unit guide. Cold, high-density air can be supplied directly.

According to an embodiment, the cooling unit and the heater unit are implemented as an air conditioning system including an evaporator, a compressor, a condenser, and an expansion valve to circulate the refrigerant and perform a phase change, and the cooling unit And an exhaust fan that blows to the side, and the heater unit includes the condenser and a condenser fan for blowing air heated in the condenser to the side.

According to another embodiment, the exhaust fan is implemented as a centrifugal fan that discharges air introduced through an inlet facing the first circulation port along the entire outer circumference of the circular rotating vehicle, and the evaporator is a donut surrounding the exhaust fan. It can be provided in a shape.

Likewise, the condenser fan may be implemented as a centrifugal fan that discharges the upper air flowing through the inlet along the entire outer circumference of the circular rotating vehicle, and the condenser may be provided in a donut shape surrounding the condenser fan.

According to another embodiment, the air conditioner of the present invention further includes an auxiliary evaporator disposed between the evaporator and the compressor to facilitate circulation of the refrigerant by evaporating the refrigerant remaining in a liquid state without evaporating in the evaporator in a low-temperature environment. I can.

The air density control system of the present invention can generate an air zone filled with clean air by discharging air from which fine dust or the like has been removed to the surrounding space.

Ambient air (especially air containing fine dust on the upper side) can be introduced along the downdraft formed by the air discharged from the cooling unit.The air density control system heats the air above the ceiling to a high temperature and discharges it to the side. , It is possible not only to block the inflow of the upper air into the downdraft, but also to prevent fine dust from the upper side of the ceiling from descending into the surrounding space (air zone).

If the air density control system is installed at the edge of the pedestrian path in contact with the driveway, it is possible to block the introduction of fine dust or nitrogen compounds generated from the driveway into the surrounding space (air zone) of the air density control system. Roadways in the middle of the day, where solar radiation occurs in urban areas, are relatively hotter and have low air density compared to pedestrian paths. Therefore, in the middle of the day, there is an air current from the pedestrian path to the driveway. Since the exhaust air discharged from the air density control system of the present invention has a relatively high density, the air zone is further strengthened while enhancing the airflow in the direction of the roadway.

The air density control system of the present invention is implemented in the form of a so-called'PAgora', so that a user can take a break in the air zone.

On the other hand, the air conditioner applied to the present invention is provided in the form of being mounted on the upper part of the main body, so that the components of the air conditioner may not interfere with the progress of pedestrians when installed outdoors, especially in urban areas.

1 is a block diagram of an air density control system of the present invention,

2 is a configuration diagram of an air conditioner applied to the present invention,

3 is a block diagram of an air density control system to which the air conditioner of FIG. 2 is applied according to an embodiment of the present invention;

4 is a conceptual diagram of the air density control system of FIG. 3;

5 and 6 are configuration diagrams of an air conditioner according to another embodiment of the present invention, and

7 is a view for explaining the air flow around the air density control system installed on the pedestrian path in contact with the driveway, and

8 is a block diagram of an air density control system according to another embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Referring to FIG. 1, the air density control system 100 of the present invention is a structure installed outdoors, particularly in a square or pedestrian path accessible to people, and is clean and dense to remove dust after inhaling external air. By venting the air around, it is possible to create an air zone (x) filled with clean air in a certain range of surrounding spaces.

Here, the air zone x is for expressing an ambient space mainly filled with air that has been purified and cooled by the air density control system 100 and may not be physically classified. Depending on the embodiment, the air zone x may be specified by being separated from the outer space by a curtain, glass, or other structure.

Referring to FIG. 1, the air density control system 100 includes a body 110, an air purification filter unit 130, a ceiling unit 150, a cooling unit 171, and a heater unit 173. The air density control system 100 of the present invention has a columnar body 110, and an air zone x is formed around the body 110. The ceiling portion 150 is disposed on the main body 110 to cover the upper portion of the air zone x. The cooling unit 171 is also mounted on the main body 110, and the cooling unit 171 is provided between the main body 110 and the ceiling unit 150, and the heater unit 173 is mounted on the ceiling unit 150.

The main body 110 may be any type as long as it can form the inner space portion 110a. In the example of FIG. 4, the main body 110 is shown in a substantially cylindrical shape, but does not necessarily have to be cylindrical. However, in consideration of the fact that the air density control system 100 is installed on a pedestrian path or the like, a cylindrical shape that does not occupy much of the ground is good.

The outer surface of the pillar of the main body 110 is provided with an external device 111 for inhaling external air and a first circulation port 113 for discharging the air from the internal space 110a to the cooling unit 171. The external device 111 is mainly provided on the outer surface of the main body 110 in the shape of a column, and the first circulation port 113 is mainly connected to the cooling unit 171 mounted on the upper side of the main body 110. 110) is provided on the upper surface (or the upper part of the outer surface). In the present invention, it is described that the cooling unit 171 and the heater unit 173 are functionally provided on the upper portion of the main body 110, but in the actual implementation process, the cooling unit 171 is provided in the inner space unit 110a of the main body 110. ) And the heater unit 173 may be mounted.

The air purification filter unit 130 is provided in the inner space portion 110a of the main body 110, and is disposed to completely block the path of air between the outer device 111 and the first circulation port 113. The air introduced through 111 and transferred to the first circulation port 113 is purified. The air purification filter unit 130 may include a pre-filter and a HEPA filter for removing dust and the like, and various filters may be applied according to foreign substances to be filtered. However, the air purification filter unit 130 does not necessarily need to be provided inside the main body 110, and may be provided between the main body 110 and the cooling unit 171, or may be provided inside the cooling unit 171. .

The ceiling part 150 is provided in a shape such as a roof or a parasol covering the upper part of the air zone x on the upper part of the main body 110 to block the air above the air zone x from directly entering the air zone x. .

The ceiling part 150 may be implemented with a transparent material to allow sunlight to enter the air zone x, or may cover the sunlight with an opaque material. Although it is good that the ceiling part 150 has a flat disk shape, it is not limited thereto. The edge end of the ceiling part 150 is preferably inclined downward or bent vertically as if surrounding the air zone x to induce high-pressure cooling air discharged from the cooling part 171 into the air zone x.

The cooling unit 171 and the heater unit 173 are provided on the central axis of the main body 110. The cooling part 171 is provided between the main body 110 and the ceiling part 150, and the heater part 173 is provided on the ceiling part 150. The cooling unit 171 faces the first circulation port 113 on the lower surface, and an intake port through which air is introduced is provided, and the upper surface is sealed by the ceiling unit 150, and air is discharged to the side through the entire side 360°. The heater unit 173 has a lower surface sealed by the ceiling unit 150, and an upper surface intake port 173b through which upper air is introduced is provided on the upper surface, and air is discharged laterally through the entire side 360°. A cooling unit guide 171a for guiding discharged air is provided at a front end of the cooling unit 171, and a heater unit guide 173a for guiding discharged air is provided at a front end of the heater unit 173. The cooling unit guide 171a and the heater unit guide 173a have a disk shape corresponding to the ceiling unit 150. In the example of FIGS. 3 and 4, the cooling unit guide 171a is implemented to operate as a case supporting the cooling unit 171, and the heater unit guide 173a is in the form of an upper cover covering the heater unit 173. Was implemented.

In response to the ceiling portion 150 having a flat disk shape, the cooling portion 171 and the heater portion 173 also preferably have a flat disk shape as shown in FIG. 3, and the side of the disk is not a type that discharges air in a specific direction, but 360° It is good to exhaust air through the whole. Accordingly, the direction in which air is discharged from the cooling unit 171 and the heater unit 173 is a direction perpendicular to the vertical central axis of the main body 110. The cooling unit 171 discharges the cooled air toward the upper side of the air zone x in a horizontal direction on the ground, and the heater unit 173 also discharges the heated air to the side along the upper surface of the ceiling unit 150 do.

The cooling unit guide 171a is disposed in parallel with the ceiling unit 150 along the lower surface of the ceiling unit 150 to guide cold air discharged from the cooling unit 171 to the side, and the heater unit guide 173a is the ceiling unit 150 ) Is arranged in parallel with the ceiling part 150 along the upper surface of the) to guide the heated air discharged from the heater part 173 to the side. The cooling unit guide 171a and the heater unit guide 173a discharge air of different temperatures from above and below the ceiling unit 150 to the side, thereby forming a temperature reversal layer in the outer room of the ceiling unit 150. The temperature reversal layer serves to block the inflow of the upper air into the air zone (x) together with the ceiling part 150, and the outside air flows into the air zone (x) along the downward airflow of the cold air discharged from the cooling part 171. Block the inflow. Since the cooling unit guide 171a is smaller than the ceiling unit 150, the cold air discharged from the cooling unit 171 starts to fall downward before leaving the ceiling unit 150, and some of them go down beyond the ceiling unit 150. The heater part guide 173a is also smaller than the ceiling part 150, but is disposed above the ceiling part 150, so the heated air discharged from the heater part 173 rises out of the ceiling part 150, but some of it escapes the ceiling part 150. You can ascend upwards before. However, the heated air discharged from the heater unit 173 does not fall downward until it leaves the ceiling unit 150 at least. Therefore, the cold air discharged from the cooling unit 171 flows into the air zone, and the heated air discharged from the heater unit 173 protects the air zone together with the ceiling unit 150. Preferably, the cooling unit 171 and the heater unit 173 discharge air at a sufficient wind speed to form a temperature reversal layer in the outer room of the ceiling unit 150 and to push the air existing in the outer room of the ceiling unit 150 good.

The cooling unit 171 is preferably made to sufficiently increase the wind speed of the discharged air so that the cold air can proceed to the outside of the ceiling unit 150. It is good to increase the wind speed of the discharged air sufficiently so that the heated air can proceed to the outside of the ceiling part 150 as well as the heater part 173.

The purified and cold air discharged from the cooling unit 171 is supplied to the vicinity of the main body 110 to form an air zone x filled with high-pressure cold and clean air around the main unit 110. In the air zone (x) area, high-density clean air discharged from the cooling unit 171 is filled and then flows back into the air density control system 100 through the external device 111. External air may naturally be introduced into the air zone (x), but external contaminated air is introduced into the air density control system 100 through the external device 111 and is purified.

On the other hand, when a downward airflow is generated by the air discharged from the cooling unit 171, air or fine dust outside the air zone (x) may flow into the air zone (x) along the downward airflow. Exhaust air blocks this inflow above the downdraft. The heater part 173 forms a hot air blocking film on the upper side of the air zone x and creates an upward airflow of hot air, thereby forming airflows in opposite directions on the upper side of the air zone x. Blocks air (especially upper air) or fine dust from outside the zone (x) from flowing into the air zone (x) along the downdraft. This characteristic is that even if the ceiling part 150 is not large enough, the temperature reversal layer formed by air of different temperatures discharged from the cooling part 171 and the heater part 173 serves to block the inflow of air from the upper part. In other words, even when the ceiling part 150 cannot be sufficiently large structurally, the cooling part 171 and the heater part 173 can create an air zone larger than the ceiling part 150.

The cooling unit 171 is provided with a means for cooling air and a means for blowing the cooled air to the side, and the heater unit 173 is provided with a means for heating the air and a means for blowing the heated air to the side. And, you can use any device known in the art. For example, the cooling unit 171 and the heater unit 173 may be implemented in the form of a single air conditioner that cools and heats the surrounding air through a phase change while circulating a refrigerant. It is shown in Figure 2. Accordingly, the air density control system 100 of the present invention may include an air conditioner 200 in place of the cooling unit 171 and the heater unit 173. The air density control system 300 of FIGS. 3 and 4 is the same system as the air density control system 100 of FIG. 1, and the cooling unit 171 and the heater unit 173 are combined with the air conditioner 200 of FIG. 2. This is an example implementation. In the following, the same configuration is indicated and described with the same identification number.

Referring to FIG. 2, the air conditioner 200 of the present invention includes a receiver drier 201, an expansion valve 203, an evaporator 205, a compressor 207, a condenser 209, and an exhaust fan. 211) and a condenser fan 213 are provided to cool and warm the surrounding air by circulating the refrigerant while converting the phase. The air conditioner 200 includes a control unit 230 that controls the overall operation of the air conditioner 200. The controller 230 may control the overall operation of the air density control system 300 together with the operation control of the air conditioner 200.

In terms of the cooling method, the air conditioner 200 is the same as the cooling method of a general air conditioner widely used in the related art. The refrigerant compressed in the compressor 207 passes through the condenser 209 and is condensed into a high-temperature and high-pressure liquid phase, and the condensed refrigerant passes through the expansion valve 203 and the evaporator 205 and vaporizes to change into a low-temperature and low-pressure gas. It flows back into the compressor 207. The receiver dryer 201 stores an appropriate amount of refrigerant to respond to changes in the refrigerant circulation amount in response to changes in the load of the refrigeration cycle, and absorbs and removes moisture in the refrigerant. Therefore, detailed individual operations of the receiver dryer 201, the expansion valve 203, the evaporator 205, the compressor 207, and the condenser 209 are not separately described.

Air introduced into the inner space portion 110a of the main body 110 through the external port 111 is cooled and exhausted while flowing into the evaporator 205 through the air purification filter unit 130 and the first circulation port 113 It is blown to the side by the fan 211, and the air above the ceiling part 150 is heated by the condenser 209 and blown to the side by the condenser fan 213. Accordingly, the evaporator 205 and the exhaust fan 211 correspond to the cooling unit 171 and are provided below the ceiling unit 150, and the condenser 209 and the condenser fan 213 correspond to the heater unit 173. Thus, it is provided above the ceiling part 150.

Since the air zone (x) is formed in the entire direction surrounding the body 110 by 360°, the cooling unit 171 must discharge the cooled air in the entire direction of the side 360° to create a descending airflow, and the heater unit 173 ), the heated air must be discharged in a full 360° lateral direction to create an updraft corresponding to the downdraft. Referring to FIG. 3, the cooled air and the heated air are discharged side by side, and then the cooled air forms a downward airflow, and the heated air forms an upward airflow. In conclusion, the heater unit 173 and the cooling unit 171 must be capable of discharging air in the lateral direction, but discharging in the entire direction of the side 360°.

If the cooling unit guide 171a and the heater unit guide 173a support and cover the cooling unit 171 and the heater unit 173 together, the air discharged from the evaporator 205 and the condenser 209 is In order to guide it to the side, it is preferable that the cooling unit guide 171a and the heater unit guide 173a have a larger disk shape than the evaporator 205 and the condenser 209.

Structure of evaporator, exhaust fan, condenser and fan for condenser

In the examples of FIGS. 3 and 4, the exhaust fan 211 is implemented as a centrifugal fan that discharges air introduced through an inlet facing the first circulation port 113 along the entire outer circumference of the circular rotating vehicle. The evaporator 205 is provided in a donut shape surrounding the exhaust fan 211. The air that has passed through the air purification filter unit 130 is blown toward the evaporator 205 by the exhaust fan 211. The evaporator 205 cools the air blown by the exhaust fan 211 and discharges it to the outside. Likewise, the condenser fan 213 is implemented as a centrifugal fan that discharges upper air introduced through the upper intake port 173b along the entire outer circumference of the circular rotating vehicle. The condenser 209 is provided in a donut shape surrounding the condenser fan 213. When the condenser fan 213 operates and blows the upper air toward the condenser 209, the condenser 209 heats the upper air blown by the condenser fan 213 and discharges it to the outside.

The difference in rotation used for the exhaust fan 211 and the condenser fan 213 can take various forms. A backward fan inclined in the direction opposite to the rotation direction or a forward fan inclined in the rotation direction can be used. However, compared to a forward fan in which air is discharged in a direction normal to the rotation of the rotating vehicle, a backward fan in which air is discharged in a direction perpendicular to the rotation axis is preferable. In addition, a radial fan in which the blades of the rotating vehicle are perpendicular to the rotating axis can be used.

When the air conditioner 200 is operated by the control unit 230, the air density control system 100 of the present invention also performs a circulation operation.

Example of an air conditioner (auxiliary evaporator)

Meanwhile, since the air density control system 300 of the present invention is installed outdoors, it can operate in the evening or early morning when the temperature of the outside air decreases, and can operate in a low temperature environment in winter. At this time, the refrigerant is not completely evaporated in the evaporator 205 and may be sucked into the compressor 207 in a liquid state. The problem is that the compressor 207 may burn out in the process of compressing the liquid refrigerant. In order to prevent this problem, the air conditioner 200 of the present invention may further include a'secondary evaporator' between the evaporator 205 and the compressor 207. The auxiliary evaporator is a separate evaporator, but by creating a constant temperature condition outside, the evaporator 205 does not evaporate in a low-temperature environment and completely evaporates the refrigerant remaining in the liquid phase.

5, the auxiliary evaporator 510 is mounted on the pipe 511 between the evaporator 205 and the compressor 207 to heat the pipes 511 and 514, and heaters 512 and 515 to protect them. Insulation materials 513 and 516 may be included.

Alternatively, referring to FIG. 6, the auxiliary evaporator device 610 includes auxiliary evaporators 611 and 614 for vaporizing the remaining liquid phase vaporized in the evaporator 205 into a low-pressure gas, and the auxiliary evaporators 611 and 614. ) And a cooling water chamber (612, 615) to support the vaporization operation. The insides of the cooling water chambers 612 and 615 are filled with cooling water, and the cooling water is maintained at a constant temperature by heaters 613 and 616. 6A is an example in which the auxiliary evaporator 611 is provided outside the cooling water chamber 612, and FIG. 6B is an example in which the auxiliary evaporator 614 is provided inside the cooling water chamber 615.

Operation of the air density control system of the present invention (Fig. 7)

As described above, when the control unit 230 operates the air conditioner 200, the air density control systems 100 and 300 of the present invention operate. First, when the exhaust fan 211 is operated, the external air is transferred to the inside of the main body 110 through the external device 111 by the negative pressure that the exhaust fan 211 forms in the inner space portion 110a of the main body 110. It flows into the space part 110a. The introduced air is purified by passing through the air purification filter unit 130 and then introduced into the exhaust fan 211 through the first circulation port 113. The exhaust fan 211 blows the purified air into the evaporator 205 disposed along the outer circumference, and the purified air passes through the evaporator 205 and is cooled by heat exchange, and then the lower surface of the ceiling 150 and the cooling unit It is discharged to the outside while moving to the side along the guide (171a).

In order to keep the air density of the air zone (x) uniform, the evaporator 205 is preferably installed to discharge air in all directions by 360°. The external device 111 is not necessarily so, but, like the cooling unit 171, it is good to suck in external air from the entire direction surrounding the main body 110.

Since the air cooled while passing through the evaporator 205 is compressed to a considerable level, the air discharged from the evaporator 205 (hereinafter, referred to as “exhaust air”) becomes high-density cold air. According to Charles' law, the density of air changes according to the temperature of the air, and can be expressed by Equation 1 below.

Here, t is the temperature of the gas, Vo is the volume of the gas at 0 degrees, and Vt is the volume of the gas at the temperature t. With a constant number of gas molecules, the density decreases as the air temperature increases and the volume increases. At the same pressure, when the air temperature rises by 5 degrees, the air density decreases by about 2%, and when the temperature decreases by 5 degrees, the air density increases by 2%.

As the high-density cold exhaust air is discharged through the evaporator 205, it forms a downward airflow by gravity, and at the same time, a horizontal force toward the surrounding hot air with relatively low density acts to push out the hot air. An air zone (x) filled with high-density cold air is formed. An air film is formed on the surface where the high-density cold air and the surrounding hot air meet to create an air zone (x). Since the inside of the air zone x is denser than the outside, there is an outflow of air to the outside, but there is an effect of blocking air inflow from the outside into the air zone x, that is, the air membrane.

As shown in FIG. 7, when the air density control system 300 is installed on the edge of the walkway 30 in contact with the driveway 20, a more powerful air zone x is created, and fine dust or nitrogen compounds generated in the driveway 20 It can be blocked from entering the zone (x). Vehicles running in urban areas are one of the major causes of air pollution because they emit nitrogen compounds, in addition to exhaust gases, tire dust, and fine dust from road crushing. The roadway 20 in the middle of the day in which solar radiation is generated in the city has a relatively high temperature and low air density compared to the pedestrian path 30. Therefore, in the city center at midday, there is an airflow from the pedestrian path 30 to the driveway 20. Since the exhaust air discharged from the air density control system 300 of the present invention has a relatively high density, the air zone x is further strengthened while enhancing the airflow in the direction of the roadway. Accordingly, the air density control system 300 of the present invention can create an air zone x filled with clean air in the pedestrian path 30 in contact with the roadway 20 in the city.

During this process, the condenser fan 213 sucks in the upper air and blows it toward the condenser 209. The condenser 209 heats the air blown by the condenser fan 213 to a high temperature. The air heated in the condenser 209 is guided along the upper surface of the heater guide 173a and the ceiling 150 and discharged to the side. The air above the ceiling part is discharged to the side and then forms an ascending airflow, thereby preventing the air above the ceiling 150 or the air from the side from flowing into the air zone (x) along the descending airflow by the cooling part 171 do. In addition, since the air discharged from the condenser 209 is in a warmed state, it is discharged to the side and then diffuses, resulting in a lower density. Accordingly, due to the difference in air density between the air zone x and the upper atmosphere, circulation between the air zone x and the upper atmosphere of the ceiling 150 does not occur.

Another embodiment (Fig. 8)

In the above example, the cold air discharged from the cooling unit 171 forms a downward airflow forming the edge of the air zone by the cooling unit guide 171a and fills the inside of the air zone (x). In addition, cold air may be supplied directly into the air zone x.

Referring to FIG. 8, an air density control system 800 according to another embodiment of the present invention has the same configuration as the air density control system 300 of FIG. 3, but The cooling unit guide 171a serving as a guide is doubled as the first cooling unit guide 801 and the second cooling unit guide 803 to separately supply cold air into the air zone x.

The first cooling unit guide 801 and the second cooling unit guide 803 guide air discharged from the cooling unit 171 to the side, and are basically described in the same manner as the cooling unit guide 171a. However, based on the vertical center line of the main body 110, the first cooling unit guide 801 guides the cold air farther than the second cooling unit guide 803, thereby reducing the point at which the cold air descends. 2 It is farther from the main body 110 than the cooling part guide 803. Therefore, the first cooling unit guide 801 is disposed on the second cooling unit guide 803 in a larger size. In the example of FIG. 8, the cold air discharged by the evaporator 205 in the entire 360° direction is discharged in multiple stages by the first cooling unit guide 801 and the second cooling unit guide 803 arranged in two stages.

The first cooling unit guide 801 guides cold air discharged from the cooling unit 171 to form an outer periphery of the air zone x like the cooling unit guide 171a of FIG. 1. The cold air guided and discharged by the first cooling unit guide 801 forms a descending airflow af1 forming an edge of the air zone x while descending. Instead, the second cooling unit guide 803 supplies cold air into the air zone x so that the inside of the air zone x is cooled more quickly. The cold air that is guided and discharged by the second cooling unit guide 803 descends and forms a descending airflow af2 flowing into the air zone x. The air density control device 800 of FIG. 8 can efficiently maintain a cold, high-density space inside the air zone (x).

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and is generally used in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications may be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

Claims (12)

1. As an outdoor air density control system,

   At least one external device through which air from the surrounding space is introduced is provided on an outer surface, and a first circulation port through which the introduced air is discharged is provided on an upper surface. ;

   A ceiling part covering the surrounding space to block upper air from flowing into the surrounding space;

   It is provided between the main body and the ceiling part and cools the air discharged from the first circulation port to discharge cool air to the side along the lower surface of the ceiling part, thereby forming a downward airflow of the cool air, thereby creating a high-density air zone around the main body. A cooling unit to make it; And

   The heated air is provided on the ceiling and includes a heater to heat the air above the ceiling to discharge the air heated laterally along the upper surface of the ceiling, so that the heated air forms an upward airflow so that the upper air flows into the air zone along the downward airflow. Air density control system, characterized in that blocking the inflow.
2. The method of claim 1,

   A cooling unit guide provided at a front end of the cooling unit to guide the cold air to the side and having a size smaller than that of the ceiling unit; And

   An air density control system, further comprising a heater guide provided at a front end of the heater to guide the heated air to the side, but having a size smaller than that of the ceiling.
3. The method of claim 2,

   And another cooling unit guide provided between the cooling unit guide and the ceiling unit to guide cold air discharged from the cooling unit farther than the cooling unit guide.
4. The method of claim 2,

   The cooling unit and the heater unit are implemented as an air conditioning system that circulates a refrigerant including an evaporator, a compressor, a condenser, and an expansion valve and performs a phase change,

   The cooling unit includes an exhaust fan that blows the evaporator and air to the side,

   And a fan for a condenser that blows the air heated by the condenser and the air heated in the condenser to the side.
5. The method of claim 4,

   The exhaust fan is implemented as a centrifugal fan that discharges air introduced through an inlet facing the first circulation port along the entire outer circumference of the circular rotating vehicle,

   The evaporator is an air density control system, characterized in that provided in a donut shape surrounding the exhaust fan.
6. The method of claim 4,

   The condenser fan is implemented as a centrifugal fan that discharges the upper air flowing through the inlet along the entire outer circumference of the circular rotating vehicle, and the condenser is provided in a donut shape surrounding the condenser fan. Density control system.
7. The method of claim 1,

   The cooling unit and the heater unit are implemented as an air conditioning system that circulates a refrigerant including an evaporator, a compressor, a condenser, and an expansion valve and performs a phase change,

   The cooling unit includes an exhaust fan that blows the evaporator and air to the side,

   And a fan for a condenser that blows the air heated by the condenser and the air heated in the condenser to the side.
8. The method of claim 7,

   The exhaust fan is implemented as a centrifugal fan that discharges air introduced through an inlet facing the first circulation port along the entire outer circumference of the circular rotating vehicle,

   The evaporator is an air density control system, characterized in that provided in a donut shape surrounding the exhaust fan.
9. The method of claim 7,

   The condenser fan is implemented as a centrifugal fan that discharges the upper air flowing through the inlet along the entire outer circumference of the circular rotating vehicle, and the condenser is provided in a donut shape surrounding the condenser fan. Density control system.
10. The method of claim 7,

    An air density control system, further comprising an auxiliary evaporator disposed between the evaporator and the compressor, and evaporating the refrigerant remaining in a liquid state without being evaporated in the evaporator in a low temperature environment.
11. The method of claim 1,

    The cooling unit and the heater unit, by discharging the cold air and the heated air at a wind speed sufficient to proceed side by side to the outer room of the ceiling unit to generate a temperature reversal layer in the outer room of the ceiling.
12. The method of claim 1,

    An air density control system comprising: an air purification filter unit provided in the inner space of the main body or the cooling unit, or provided between the main body and the cooling unit to purify external air introduced through the external port.

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