JP2017161167A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress heat outflow from an object space at least part of which is opened, to the outside.SOLUTION: An air conditioning system 20 is provided with a first airflow generation device 21 and a second airflow generation device 22. An object space St has a top covered surface, and includes wall members 131, 132, 133 and an inlet/outlet 14 on the side surfaces. The first airflow generation device 21 forms a first airflow AF1 in a direction along the open surface. A second airflow generation device 22 is disposed on a downstream side of the first airflow AF1 in the peripheral part of the object space St so as to form the second airflow AF2 in a direction facing a closed surface. Further, the second airflow generation device 22 is disposed so that the second airflow AF 2 formed by the second airflow generation device 22 involves the first airflow AF1 on the downstream side of the first airflow AF 1 formed by the first airflow generation device 21. As a result, the second airflow generation device 22 is disposed so that the first airflow AF 2 is changed to face the direction of the second airflow AF1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an air conditioning system that forms an airflow in a target space.

  Conventionally, it has been proposed that a plurality of indoor units installed in an air-conditioning target space form an overall air flow in the air-conditioning target space by associating a blown air flow from one indoor unit with a blown air flow of another indoor unit. (For example, refer to Patent Document 1). Japanese Patent Application Laid-Open No. H10-228561 describes that a whole air current such as a swirling air current is formed in the entire air-conditioning target space, and that uncomfortable feeling due to a monotonous air current or temperature unevenness is eliminated, thereby realizing comfortable air conditioning. Further, in Patent Document 1, since a feeling of airflow can be given to the entire air-conditioned space, the user can feel cool even if the set temperature is increased or the operation of some indoor units is stopped. There is also a statement that the energy-saving effect is improved.

JP 2008-16064 A

  The configuration described in Patent Document 1 solves the problem of performing air conditioning in a relatively wide space such as a store, a restaurant, or an office, but the air-conditioning target space is generally a closed space, and at least one The target space where the part is opened is not considered.

  An object of this invention is to provide the air-conditioning system which suppresses the outflow of the heat | fever from the object space in which at least one part is open | released outside.

  An air conditioning system according to the present invention includes a first airflow generation device and a second airflow generation device. The first airflow generation device forms a first airflow that passes through the target space. The second airflow generation device forms a second airflow that passes through the target space. The target space is covered with an upper surface and includes a closed surface and an open surface on a side surface. The first airflow generation device and the second airflow generation device are arranged at different portions in a peripheral portion of the target space in a plan view of the target space. The first airflow generation device forms the first airflow in a direction along the open surface. The second airflow generation device is arranged to form the second airflow in the direction toward the closed surface, downstream of the first airflow in the peripheral portion of the target space. Further, the second airflow generation device is configured such that the second airflow formed by the second airflow generation device is the first airflow downstream of the first airflow formed by the first airflow generation device. It is arranged to involve the airflow. As a result, the second airflow generation device is arranged so that the first airflow is changed to the direction of the second airflow.

  Another air conditioning system according to the present invention includes three or more airflow generation devices that form an airflow passing through a target space. The target space is covered with an upper surface and has an open surface on at least a part of a side surface. The plurality of airflow generation devices are arranged at different portions in the periphery of the target space in plan view of the target space. Of the plurality of airflow generation devices, two airflow generation devices adjacent to each other in the peripheral portion of the target space satisfy the following conditions for the first airflow generation device and the second airflow generation device: Are arranged as follows. The first airflow generation device is one of the two airflow generation devices, and the second airflow generation device is the other of the two airflow generation devices. That is, it is a condition that the second air stream formed by the second air stream generator entrains the first air stream downstream of the first air stream formed by the first air stream generator. The first airflow generation device and the second airflow generation device are arranged such that the first airflow is changed to the direction of the second airflow. Moreover, the plurality of airflows formed by the plurality of airflow generation devices are arranged so as to circulate in the target space.

  According to the structure of this invention, it has the advantage that the outflow of the heat | fever to the exterior from the object space where at least one part is open | released is suppressed.

FIG. 1 is a perspective view showing one configuration example of a building. FIG. 2 is a diagram for explaining the operation of the configuration example shown in FIG. FIG. 3 is a perspective view showing another configuration example of the building. FIG. 4 is an operation explanatory diagram of the configuration example shown in FIG.

  The buildings described below are in principle non-residential, but do not preclude adoption of the techniques described below in residential buildings. Non-residential buildings are assumed to be installed in places where people come and go, such as roads, stations, parks, and plazas. This type of building is used in, for example, rest areas, waiting rooms, eastern stores, stops, and railway stations. Also, this type of building has a roof and the walls are at least partially open.

  There are no particular restrictions on the shape of the building, and various shapes such as a quadrangular shape, a circular shape, or a polygonal shape other than the quadrangular shape can be adopted as the outer peripheral shape of the roof. The roof member constituting the roof is supported by a support material that stands on the installation surface of the place where the building is installed. The support material is selected from a column supporting the periphery of the roof member, a column supporting the center of the roof member, a support wall supporting the periphery of the roof member, or a load bearing wall. The installation surface is selected from the ground surface, road surface, building floor surface, and the like. In the case of a building, the floor surface of the building corresponds to the floor surface of the roof. The floor of a building may be formed by a floor member separately from the installation surface when the installation surface is used as the floor surface.

(Configuration example 1)
Hereinafter, as illustrated in FIG. 1, a configuration example in which a building 10 </ b> A includes a roof member 11 whose outer peripheral shape is a quadrangular shape and four support columns 12 that support four corners of the roof member 11 will be described. The support column 12 is erected on the installation surface immediately below the four corners of the roof member 11, and the upper end portion of the support column 12 is coupled to the roof member 11. Further, the roof member 11 has a light shielding property or a heat shielding property. The roof member 11 is selected from a synthetic resin plate, a synthetic resin sheet, a metal plate, a cement plate, and the like. The roof member 11 may have a configuration in which a plurality of roof materials are arranged on a roof base. In addition, in order to secure at least a part of the electric power supplied to the equipment used in the building 10 </ b> A, when the solar cell panel is mounted on the roof, the solar cell panel can also be used as the roof member 11.

  In the building 10A shown in FIG. 1, wall members 131, 132, and 133 are arranged on three surfaces of four surfaces excluding the surface covered with the roof member 11 and the installation surface, and the remaining one surface Is open. That is, the building 10A formed in a rectangular parallelepiped shape has a shape in which one surface is an open surface, and the user of the building 10A uses the open surface for the entrance / exit 14. Further, the remaining three surfaces of the target space St become closed surfaces by the wall members 131, 132, and 133.

  In this configuration example, the space area directly below the roof member 11 is the target space St where a person stays. Therefore, it is required to improve the comfort of the person staying in this space area. In this configuration example, the air-conditioning system 20 includes two airflow generation devices 21 and 22 that generate an airflow that passes through the target space St. By forming an airflow in the target space St, a person staying in the target space St Improve comfort. In addition, a cooling device that cools the target space St is disposed in the building 10A. The cooling device may have either a configuration shared with a plurality of airflow generation devices 21 and 22 or a configuration different from the plurality of airflow generation devices 21 and 22. Here, an example is shown in which the airflow generation devices 21 and 22 are also used as a cooling device.

  Hereinafter, one of the two airflow generation devices 21 and 22 illustrated in FIG. 1 is referred to as a first airflow generation device 21, and the other is referred to as a second airflow generation device 22. In the configuration example shown in FIG. 1, the first airflow generation device 21 and the second airflow generation device 22 also serve as a cooling device. The airflow that the first airflow generation device 21 forms in the target space St is called a first airflow AF1, and the airflow that the second airflow generation device 22 forms in the target space St is called a second airflow AF2 (FIG. 2). reference).

  The first airflow generation device 21 and the second airflow generation device 22 are respectively arranged at different parts of the peripheral portion of the target space St in plan view of the target space St. Specifically, as shown in FIG. 2, the first airflow generation device 21 is disposed adjacent to one wall member 131 of the two wall members 131, 132 sandwiching the entrance / exit 14, and the other wall A first air flow AF1 toward the member 132 is formed. The second airflow generation device 22 is disposed adjacent to the wall member 132, and forms a second airflow AF <b> 2 that goes toward the wall member 133 along the wall member 132.

  The first airflow generation device 21 and the second airflow generation device 22 are the second airflow generation device 22 formed downstream of the first airflow AF1 formed by the first airflow generation device 21. The arrangement and the direction of the airflow are determined such that the airflow AF2 of the second air entrains the first airflow AF1. That is, the relationship between the first airflow AF1 and the second airflow AF2 is determined so that the first airflow AF1 is drawn by the negative pressure generated by the second airflow AF2. Therefore, when the flow velocity of the first airflow AF1 is reduced, the first airflow AF1 is drawn into the second airflow AF2, and the direction of the first airflow AF1 is changed to the direction of the second airflow AF2.

  If the second airflow generation device 22 is not arranged, the first airflow AF1 diffuses due to a decrease in the flow velocity of the first airflow AF1, and a part of the first airflow AF1 is transferred from the entrance 14 to the building 10A. Flowing outside. Since the first airflow generation device 21 also serves as a cooling device, when part of the first airflow AF1 flows from the entrance 14 to the outside of the building 10A, the cold heat contained in the first airflow AF1 is generated in the target space St. It is wasted without being used.

  On the other hand, in the configuration example shown in FIG. 2, the first airflow AF1 is caught in the second airflow AF2 by arranging the second airflow generation device 22. That is, on the downstream side of the first airflow AF1, the amount of air that diffuses outside the building 10A is reduced, and the cold heat that leaks outside the building 10A is suppressed. In this way, the cold heat from the first airflow generation device 21 also used as the cooling device is drawn back to the target space St inside the building 10A by the second airflow AF2. Therefore, the cooling heat generated by the first airflow generation device 21 is efficiently used in the target space St, the target space St can be quickly cooled, and the amount of energy required for cooling the target space St is reduced. Is done.

  In the above configuration example, the example in which the first airflow generation device 21 and the second airflow generation device 22 are also used as a cooling device is shown. However, the first airflow generation device 21 and the second airflow generation device 22 are used. May also be used as a heating device. Further, only the first airflow generation device 21 may be configured to generate cold or warm heat, and the second airflow generation device 22 may be configured to perform only blowing.

  Furthermore, although the cooling device is assumed to be a heat pump type configuration, a configuration may be employed in which the mist is generated by atomizing water with a nozzle or the like, and the temperature is lowered by taking the heat of vaporization. When the mist is generated, the mist is carried by the first airflow AF1, but it is easier to decelerate than the air, so it is difficult to carry it far by the first airflow AF1 alone. In the configuration described above, since the second airflow AF2 is formed on the downstream side of the first airflow AF1, mist is drawn into the second airflow AF2. As a result, the amount of mist that leaks from the target space St to the outside is reduced, and the proportion of mist that contributes to lowering the temperature of the target space St is increased.

  The two airflow generation devices 21 and 22 are disposed at the same height (desirably the same height) in the target space St. Since the two airflow generation devices 21 and 22 are arranged at the same height, the air downstream of the first airflow AF1 is easily guided to the second airflow AF2.

  As is apparent from the above-described operation, the second airflow AF2 is desirably formed so that the first airflow AF1 is decelerated on the downstream side and air does not diffuse outside the target space St through the entrance / exit 14. That is, it is desirable that the specification of the first airflow generation device 21 is determined so that the first airflow maintains a flow velocity equal to or higher than a predetermined reference value until the first airflow AF1 is caught in the second airflow AF2. .

  In addition, when the first airflow generation device 21 is used alone, it is desirable to determine the position of the second airflow generation device 22 at a position where the flow velocity of the first airflow AF1 decreases to a predetermined reference value. For example, the reference value of the flow velocity is 0.5 [m / s]. In this case, when there is no second airflow generation device 22 and only the first airflow generation device 21 exists in the target space St, the flow velocity of the first airflow AF1 reaching the wall member 132 is 0.5 [m. / S], the first airflow generation device 21 is designed. That is, the initial speed of the first airflow AF1 is determined. Further, the flow velocity and direction of the second airflow AF2 are determined so that the second airflow AF2 changes the direction by involving the first airflow AF1.

  Further, the first air flow AF1 is entangled in the second air flow AF2 downstream and the outflow amount to the outside of the target space St is reduced (ideally, not to flow out). The relationship between the initial speed of AF1 and the initial speed of the second airflow AF2 is determined. This relationship is determined by various factors such as the specifications of the first airflow generator 21, the specifications of the second airflow generator 22, and the size of the building 10A.

  Here, conditions relating to the flow velocity of the first air flow AF1 and the flow velocity of the second air flow AF2 are determined. However, when the first air flow generation device 21 sprays mist, the first air flow AF1 is mist. The conditions are determined by replacing with That is, the initial velocity of the first airflow AF1 is determined so that the flow velocity when the mist reaches the wall member 132 becomes a reference value (for example, 0.5 [m / s]).

  In the configuration example described above, since the second airflow generator 22 forms the second airflow AF2 in the direction toward the wall member 133, when the second airflow AF2 reaches the wall member 133, the wall member 133 The direction of the airflow is changed to follow. Although depending on the initial velocity of the second airflow AF2, the size of the target space St, etc., the second airflow AF2 flows along the wall member 133 after colliding with the wall member 133, and further reaches the wall member 131. Then, it flows along the wall member 131 by being influenced by the first airflow AF1 formed by the first airflow generation device 21. That is, by using the first airflow generation device 21 and the second airflow generation device 22, an airflow that circulates in a horizontal plane is formed in the inner space of the target space St. Note that the initial velocity of the first airflow AF1 and the initial velocity of the second airflow AF2 may be the same, but are desirably different.

  With the above-described configuration, the first airflow AF1 functions like an air curtain with respect to the target space St, and suppresses outflow of cold or warm heat from the target space St to the outside. Further, in the target space St, the first air flow AF1 and the second air flow AF2 are agitated, and cold or warm heat is distributed to the target space St, thereby suppressing temperature deviation.

(Configuration example 2)
In the configuration example described above, the wall members 131, 132, and 133 are arranged on three surfaces of the four surfaces excluding the surface covered with the roof member 11 and the installation surface in the rectangular parallelepiped building 10A. On the other hand, as shown in FIG. 3, when the wall member 133 is provided only on one of the four surfaces of the rectangular parallelepiped building 10B, the following configuration is employed. The wall member 133 forms a closed surface of the target space St. The remaining three surfaces are open surfaces and function as the entrance / exit 14.

  In this building 10B, four airflow generators 21, 22, 23, and 24 are arranged. That is, the air conditioning system 20 includes four airflow generation devices 21, 22, 23, and 24. The four airflow generation devices 21, 22, 23, and 24 may be used also as a cooling device or a heating device. In the example illustrated in FIG. 3, a configuration is assumed in which the four airflow generation devices 21, 22, 23, and 24 are also used as a cooling device. In the following, when the four airflow generation devices 21, 22, 23, and 24 are distinguished, the first airflow generation device 21, the second airflow generation device 22, the third airflow generation device 23, and the fourth airflow generation Called device 24.

  In the configuration example shown in FIG. 3, as shown in FIG. 4, the first airflow generation device 21 forms the first airflow AF1, the second airflow generation device 22 forms the second airflow AF2, The third air flow generation device 23 forms a third air flow, and the fourth air flow generation device 24 forms a fourth air flow AF4. Each of the four airflow generation devices 21 is arranged near the four corners of the quadrangular roof member 11 so as to correspond one-to-one. In addition, each of the four airflow generation devices 21 has a first airflow AF1, a second airflow AF2, a third airflow AF3, a fourth airflow so as to be along each side of the target space St that is rectangular in plan view. The air flow AF4 is formed.

  In the following, in order to distinguish the four corners in the rectangular target space St, one corner that is not in contact with the wall member 133 is defined as the first corner, and the first corner is viewed from the top of the target space St. The corner on the left of the part is called the second corner. The remaining corners are called the third corner and the fourth corner clockwise (clockwise). Furthermore, the side connecting the first corner and the second corner is the first side, the side connecting the second corner and the third corner is the second side, and the third corner and the fourth corner are connected. The side is called the third side, and the side connecting the fourth corner and the first corner is called the fourth side. That is, the side extending in the direction along the wall member 133 with respect to the first corner is referred to as a first side, and the side extending in the direction toward the wall member 133 with respect to the first corner is referred to as a fourth side.

  The first airflow generation device 21 is disposed near the first corner and forms the first airflow AF1 in a direction along the first side. The second air flow generation device 22 is disposed near the second corner, and forms the second air flow AF2 in a direction along the second side. Similarly, the third airflow generation device 23 is disposed near the third corner, forms the third airflow AF3 in a direction along the third side, and the fourth airflow generation device 24 includes the fourth corner. It is arrange | positioned in the vicinity and forms 4th airflow AF4 in the direction in alignment with a 4th edge | side. Therefore, the second air flow AF2 is formed downstream of the first air flow AF1, the third air flow AF3 is formed downstream of the second air flow AF2, and the fourth air flow AF4 is formed downstream of the third air flow AF3. The first air flow AF1 is formed downstream of the fourth air flow AF4.

  With the configuration described above, the first airflow AF1 is engulfed in the second airflow AF2 downstream, and the second airflow AF2 is engulfed in the third airflow AF3 downstream. Similarly, the third airflow AF3 is engulfed in the fourth airflow AF4 downstream, and the fourth airflow AF4 is engulfed in the first airflow AF1 downstream. Accordingly, the first air flow AF1, the second air flow AF2, the third air flow AF3, and the fourth air flow AF4 are respectively involved in the air flow having a high flow velocity so as to remain inside the target space St when the flow velocity is decreased. . As a result, the four airflow generation devices 21, 22, 23, and 24 form an airflow that circulates inside the target space St, so that cold air or warm air tends to stay in the target space St.

  In the configuration example shown in FIGS. 3 and 4, the three surfaces of the building 10 </ b> B are open, but compared to the case where the airflow generation devices 21, 22, 23, and 24 are not used, the outside of the building 10 </ b> B from the target space St. The amount of air outflow to the water is reduced. In addition, since an airflow that circulates in the target space St is formed, it is easy to distribute cold air or warm air to the entire target space St, and the target space St is cooled or heated quickly.

  All of the four airflow generation devices 21, 22, 23, and 24 may be used as a cooling device or a heating device, but a part may be used as a cooling device or a heating device. When two of the four airflow generation devices 21, 22, 23, and 24 are also used as a cooling device, for example, the first airflow generation device 21 and the third airflow generation device 23 are also used as a cooling device. The Of course, the second airflow generation device 22 and the fourth airflow generation device 24 may also be used as a cooling device. The conditions regarding the flow velocity of the first air flow AF1, the flow velocity of the second air flow AF2, the flow velocity of the third air flow AF3, and the flow velocity of the fourth air flow are the same as those in the configuration example shown in FIGS. .

  Further, similarly to the configuration example 1, it is desirable that the four airflow generation devices 21, 22, 23, and 24 are arranged at the same height (desirably the same height) in the target space St. If the four airflow generation devices 21, 22, 23, and 24 are arranged at the same height, the air downstream of one airflow is easily guided to another airflow.

  In the configuration example shown in FIGS. 3 and 4, the first airflow AF1, the second airflow AF2, and the fourth airflow AF4 function like an air curtain with respect to the entrance / exit 14 that is an open surface, and the target space St Controls the outflow of cold or warm heat from the outside. In addition, since the first air flow AF1, the second air flow AF2, the third air flow AF3, and the fourth air flow AF4 form an air flow that circulates in the target space St, temperature deviation in the target space St is suppressed. Is done.

  In the configuration example shown in FIGS. 3 and 4, the wall member 133 is provided on one surface of the building 10 </ b> B, but even when four surfaces except the surface covered with the roof member 11 and the installation surface are open. It is possible to form an airflow circulating in the target space St. That is, if the four airflow generation devices 21, 22, 23, and 24 are provided, it is possible to form an airflow that circulates in the target space St even when the wall member 133 is not present. Therefore, even if the upper surface of the target space St is not rectangular but circular, octagonal, hexagonal, pentagonal, triangular, etc., it is possible to form an airflow circulating in the target space St.

  Note that, when the upper surface of the target space St is circular, the airflow is formed along a circular string. Further, when the upper surface of the target space St is a polygon having five or more corners, the airflow does not necessarily have to be formed in a direction along the side. That is, any one of the plurality of airflows may be formed in a direction intersecting the side. However, the airflow is formed such that the center line of the streamlines passes through the target space St.

  In the configuration example shown in FIGS. 3 and 4, the arrangement of the four airflow generation devices 21, 22, 23, and 24 makes it difficult for cold air or warm air to flow out of the building 10 </ b> B from the target space St. In addition, an air flow circulating in the target space St is formed. With respect to this configuration, for example, three airflow generation devices may be arranged near the position that becomes the apex of the triangle. In this configuration, the range in which the airflow circulates is slightly narrower than in the case where the four airflow generators 21, 22, 23, and 24 are used, but it is possible to reduce the amount of cool air or warm air flowing out from the target space St. It is. In this way, the number of airflow generation devices is not particularly limited, and it is possible to form an airflow that circulates in the target space St by arranging five or more airflow generation devices.

  A simulation was performed in the case where the target space St includes four airflow generation devices 21, 22, 23, and 24. In the simulation, when four airflow generation devices 21, 22, 23, and 24 are arranged facing each other, and when arranged to form an airflow circulating in the target space St as in the configuration example 2, A comparison was made. The simulation was performed under the condition that the outside air temperature was 37 [° C.] and mist was sprayed. In addition, the result of the simulation is to obtain a temperature distribution of the temperature of the target space St in a stable state in which the temperature variation of the target space St is equal to or less than a predetermined value, and to further represent a representative value of the temperature of a region where a person stays in the target space St It was evaluated by.

  The representative value of the temperature was 30.6 ° C. when two units were placed facing each other, and 29.0 ° C. when Configuration Example 2 was adopted. That is, when the airflow generators 21, 22, 23, and 24 have the same cold energy input into the target space St, the airflow generators 21, 22, 23, and 24 are arranged so that a circulating airflow is formed, compared to the case where two units are arranged facing each other. As a result, energy utilization efficiency was higher. In addition, it was obtained that the time until the temperature of the target space St is stabilized is shorter when the airflow is circulated than when the two units face each other. Further, with respect to the temperature distribution of the target space St, the result that the temperature deviation (dispersion) is smaller when the circulating airflow is formed.

  The air conditioning system 20 of the configuration example described above includes a first airflow generation device 21 and a second airflow generation device 22. The first airflow generation device 21 forms a first airflow AF1 that passes through the target space St. The second airflow generation device 22 forms a second airflow AF2 that passes through the target space St. The target space St is covered with an upper surface, and includes a closed surface (wall members 131, 132, 133) and an open surface (entrance / exit 14) on the side surface. The first airflow generation device 21 and the second airflow generation device 22 are arranged in different parts of the periphery of the target space St in plan view of the target space St. The first airflow generation device 21 forms the first airflow AF1 in a direction along the open surface. The second airflow generation device 22 is arranged so as to form the second airflow AF2 in the direction toward the closed surface on the downstream side of the first airflow AF1 in the peripheral portion of the target space St. Further, the second airflow generator 22 is configured such that the second airflow AF2 formed by the second airflow generator 22 is the first downstream of the first airflow AF1 formed by the first airflow generator 21. It arrange | positions so that airflow AF1 may be caught. As a result, the second airflow generation device 22 is arranged so that the first airflow AF2 is changed to the direction of the second airflow AF1.

  According to this configuration, the first air flow AF1 is the second air flow so that the cool air or the warm air remains in the target space St even though the open surface is formed in the target space St that is the target of cooling or heating. Controlled by AF2. That is, the amount of cool air or warm air flowing out from the target space St is suppressed. Therefore, the efficiency of cooling or heating the target space St is increased.

  The target space St is desirably formed in the building 10A (or 10B). The building 10A (or 10B) includes a roof member 11 that covers the upper surface of the space to be recorded St, and wall members 131, 132, and 133 (or 133) that form a closed surface.

  According to this configuration, the second airflow AF2 is prevented from flowing out of the target space St by the wall member 133.

  The target space St may have a rectangular parallelepiped shape. In this case, the closed surface is three of the four surfaces adjacent to the upper surface of the target space St in the target space St, and the second airflow generation device 22 is disposed downstream of the first airflow AF1. The second airflow AF2 is formed in a direction toward the wall member 133 facing the open surface.

  In this configuration, the first airflow AF1 is formed along the open surface, but the first airflow AF1 remains in the target space St by being caught in the second airflow AF2. Further, the second airflow AF2 is guided in one direction in the target space St by the closed surface, and therefore does not flow out of the target space St. Therefore, the first airflow AF1 and the second airflow AF2 form an airflow that circulates in the target space St, and the amount of cool air or warm air flowing out from the target space St is suppressed, and the target space St Inside, cold air or warm air diffuses quickly. That is, the cooling efficiency or the heating efficiency is high, and the time from the start of the cooling or heating of the target space St until the target space St reaches the desired temperature is shortened.

  The second airflow generation device 22 is desirably disposed at a position where the flow velocity of the first airflow AF1 formed by the first airflow generation device 21 is reduced to a predetermined reference value.

  Based on this reference, the specifications and arrangement of the first airflow generation device 21 and the second airflow generation device 22 can be determined.

  In addition, the air conditioning system 20 may include three or more airflow generation devices 21, 22, 23, and 24 that form an airflow that passes through the target space St. The target space St is covered with an upper surface and has an open surface on at least a part of the side surface. The plurality of airflow generation devices 21, 22, 23, and 24 are arranged at different portions in the peripheral portion of the target space St in plan view of the target space St. Further, among the plurality of airflow generation devices 21, 22, 23, 24, two airflow generation devices (21, 22) adjacent to each other in the periphery of the target space St are the first airflow generation device (21). The second airflow generator (22) is arranged so as to satisfy the following conditions. The first airflow generation device (21) is one of the two airflow generation devices (21, 22), and the second airflow generation device (22) is the one of the two airflow generation devices (21, 22). The other of them. That is, on the downstream side of the first air flow (AF1) formed by the first air flow generation device (21), the second air flow (AF2) formed by the second air flow generation device (22) is the first air flow. The condition is to include (AF1). The first airflow generation device (21) and the second airflow generation device (22) are arranged so that the first airflow (AF1) is changed to the direction of the second airflow (AF2). The In addition, the plurality of airflow generation devices 21, 22, 23, and 24 circulate in the target space St through the plurality of airflows AF1, AF2, AF3, and AF4 formed by the plurality of airflow generation devices 21, 22, 23, and 24. Are arranged as follows.

  According to this configuration, the first air flow (AF1) is the second air flow so that the cool air or the warm air remains in the target space St even though the open surface is formed in the target space St to be cooled or heated. The airflow (AF2) is controlled. That is, the amount of cool air or warm air flowing out from the target space St is suppressed. As a result, the efficiency of cooling or heating the target space St increases.

  The target space St is formed in the building 10B, and the building 10B preferably includes the roof member 11 that covers the upper surface of the target space St.

  According to this configuration, the roof member 11 suppresses the outflow of cool air or warm air above the target space St.

  The second airflow generation device (22) is preferably disposed at a position where the flow velocity of the first airflow AF1 formed by the first airflow generation device (21) is decelerated to a predetermined reference value.

  Based on this criterion, the specifications and arrangement of the first airflow generation device (21) and the second airflow generation device (22) can be determined. In addition, the code | symbol with a parenthesis is a code | symbol for illustration. For example, (21, 22) can be read as (22, 23), (23, 24), or (24, 21).

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course, it can be changed.

10A building 10B building 11 roof member 14 doorway (open surface)
DESCRIPTION OF SYMBOLS 20 Air conditioning system 21 1st airflow generator 22 2nd airflow generator 23 3rd airflow generator 24 4th airflow generator 131 Wall member (blocking surface)
132 Wall member (blocking surface)
133 Wall member (blocking surface)
AF1 First airflow AF2 Second airflow AF3 Third airflow AF4 Fourth airflow St Object space

Claims (7)

A first airflow generator for forming a first airflow passing through the target space;
A second airflow generation device that forms a second airflow passing through the target space,
The target space is covered with an upper surface, and includes a closed surface and an open surface on a side surface,
The first airflow generation device and the second airflow generation device are arranged in different portions in a peripheral portion of the target space in a plan view of the target space,
The first airflow generation device forms the first airflow in a direction along the open surface,
The second airflow generator is
It is arranged to form the second airflow in the direction toward the closed surface on the downstream side of the first airflow in the periphery of the target space,
In addition, on the downstream side of the first airflow formed by the first airflow generation device, the second airflow formed by the second airflow generation device entrains the first airflow, whereby the first airflow is generated. The air conditioning system is arranged such that the airflow is changed to the direction of the second airflow. The target space is formed in a building,
The building is
A roof member covering the upper surface of the target space;
The air conditioning system according to claim 1, further comprising: a wall member that forms the closed surface. The target space has a rectangular parallelepiped shape,
The closed surface is three of the four surfaces adjacent to the upper surface of the target space in the target space,
The second air flow generation device is arranged on the downstream side of the first air flow, and forms the second air flow in a direction toward a wall member facing the open surface. 2. The air conditioning system according to 2. The second airflow generation device is disposed at a position where the flow velocity of the first airflow formed by the first airflow generation device is decelerated to a predetermined reference value. The air conditioning system according to any one of the above. Comprising three or more airflow generating devices that form an airflow passing through the target space;
The target space has an upper surface covered and an open surface on at least a part of the side surface,
The plurality of airflow generation devices are arranged at different sites in a peripheral portion of the target space in plan view of the target space,
Among the plurality of airflow generation devices, two airflow generation devices adjacent in the periphery of the target space are a first airflow formed by the first airflow generation device of the two airflow generation devices. Of the two air flow generation devices, the second air flow formed by the second air flow generation device entrains the first air flow, so that the first air flow becomes the second air flow. The air conditioning system is arranged such that a plurality of airflows formed by the plurality of airflow generation devices are circulated in the target space. The target space is formed in a building,
The air conditioning system according to claim 5, wherein the building includes a roof member that covers an upper surface of the target space. The second airflow generation device is arranged at a position where the flow velocity of the first airflow formed by the first airflow generation device is decelerated to a predetermined reference value. The air conditioning system described.

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