Air blowing system

Abstract

To provide an air blowing system capable of generating an air-conditioned area (space) in a part of a whole room and also improving energy saving properties.SOLUTION: A first wind direction changing louver 20a includes: a first inside louver 22a; a first outside louver 24a separated apart from a blower further than the first inside louver 22a and disposed in line with the first inside louver 22a; and a first fan box 26a disposed between the first inside louver 22a and the first outside louver 24a. The first fan box 26a includes a suction port 40 facing the side of a ceiling surface 2. The first inside louver 22a includes a first inside outlet 46a facing the side of a floor surface. The first outside louver 24a includes a first outside outlet 48a facing the side of the floor surface. The first fan box 26a blows out air suctioned through the suction port 40 from the first inside outlet 46a and the first outside outlet 48a.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a ventilation system. [Background technology]

[0002] Patent Document 1 discloses a ceiling-embedded air conditioner that delivers cool or warm air to every corner of a room and eliminates uneven temperature distribution within the room. This ceiling-embedded air conditioner has multiple air outlets from which cool or warm air is blown out. The ceiling-embedded air conditioner also has vanes for directing the air blown out from the air outlets in a specified direction relative to the air outlets, and flaps attached to the vanes for controlling the air in the axial direction of the vanes. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-280684 A Summary of the Invention [Problem to be solved by the invention]

[0004] The ceiling-embedded air conditioner disclosed in Patent Document 1 can adjust the entire room to a uniform air-conditioned environment by suppressing uneven temperature distribution throughout the room. However, it has the problem that the heat load is large and the energy saving efficiency is low because air conditioning is performed even in the space where no one is present.

[0005] The present disclosure has been made in consideration of these circumstances, and has an object to provide an air-blowing system that can generate an air-conditioned area (space) in a part of the entire room and improve energy conservation. [Means for solving the problem]

[0006] In order to solve the above problems, an air blowing system according to an embodiment of the present disclosure includes a blower that is provided on a ceiling surface and blows air along the ceiling surface, and air direction changing louvers that are provided at a predetermined distance from the blower and blow the air blown by the blower toward a floor surface. The air direction changing louvers include inner louvers, outer louvers that are further away from the blower than the inner louvers and are aligned with the inner louvers, and a fan box that is disposed between the inner louvers and the outer louvers. The fan box has an intake port facing the ceiling surface. The inner louvers have an inner outlet facing the floor surface. The outer louvers have an outer outlet facing the floor surface. The fan box blows out the air sucked in from the intake port from the inner outlet and the outer outlet.

[0007] Another aspect of the present disclosure is also an air blowing system. This air blowing system includes a blower that is provided on a ceiling surface and blows air along the ceiling surface, and an airflow direction changing louver that is provided at a predetermined distance from the blower and blows the air blown from the blower toward a floor surface. The airflow direction changing louvers include an inner louver, an outer louver that is further away from the blower than the inner louver and is aligned with the inner louver, and a fan box that is arranged between the inner louver and the outer louver. The fan box has an intake port facing the ceiling surface. The inner louver has an inner outlet facing the floor surface. The fan box blows out the air sucked in from the intake port from the inner outlet.

[0008] Any combination of the above components, and conversion of the present disclosure into a method, device, system, recording medium, computer program, etc. are also valid aspects of the present disclosure. Effect of the Invention

[0009] According to the present disclosure, it is possible to generate an air-conditioned area (space) in a portion of the entire room, while improving energy conservation. [Brief description of the drawings]

[0010] [Figure 1]1(a)-(d) are diagrams showing the configuration of a ventilation system according to this embodiment. [Diagram 2] 2(a)-(b) are diagrams showing the configuration of the air conditioning system of FIGS. 1(a)-(d). [Diagram 3] 3(a) to 3(c) are diagrams showing the configuration of a ventilation system according to the first modification. [Figure 4] 4(a)-(b) are diagrams showing the configuration of the air conditioning system of FIGS. 3(a)-(c). [Diagram 5] FIG. 5 is a diagram showing a configuration of a ventilation system according to the second modification. [Figure 6] 6(a) to (c) are diagrams showing the configuration of a ventilation system according to the third modification. [Figure 7] FIG. 7 is a diagram showing a configuration of a ventilation system according to the fourth modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially the same configuration may be omitted. This is to avoid the following explanation becoming more redundant than necessary and to facilitate understanding by those skilled in the art. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0012] 1(a)-(d) show the configuration of the air blowing system 100. FIG. 1(a) is a perspective view showing the configuration of the air blowing system 100, FIG. 1(b) is a cross-sectional view taken along line A-A' in FIG. 1(a), FIG. 1(c) is a cross-sectional view taken along line B-B' in FIG. 1(a), and FIG. 1(d) is an enlarged cross-sectional view of a portion of FIG. 1(c). The air blowing system 100 includes an air conditioner 10 and a first air direction changing louver 20a, a second air direction changing louver 20b, a third air direction changing louver 20c, and a fourth air direction changing louver 20d, which are collectively referred to as air direction changing louvers 20. The first air direction changing louver 20a to the fourth air direction changing louver 20d are collectively referred to as air direction changing louvers 20. The air blowing system 100 is provided on a ceiling surface 2 arranged vertically above in an indoor space such as an office, and generates an air-conditioned area (space) in the space below the air blowing system 100 (hereinafter referred to as the "inner space 70").

[0013] The air conditioner 10 is installed on a ceiling surface 2, draws in air located in an inner space 70 vertically below, and blows the air along the ceiling surface 2 toward the outer periphery of the air conditioner 10. The air conditioner 10 is not particularly limited as long as it has an air conditioning function, but one example is a ceiling cassette type four-way air conditioner. The air conditioner 10 is also called a blower. The decorative panel 11 of the air conditioner 10 is one of the parts that are exposed to the indoor space among the parts that make up the air conditioner 10, and is formed in a rectangular column shape in a plan view.

[0014] The decorative panel 11 is surrounded by a first outer edge portion 12a, a second outer edge portion 12b, a third outer edge portion 12c, and a fourth outer edge portion 12d, which are in different directions on the ceiling surface 2. The decorative panel 11 has an intake port 14 provided on the bottom surface, and a first air outlet 16a, a second air outlet 16b, a third air outlet 16c, and a fourth air outlet 16d provided on the side surface. The first outer edge portion 12a to the fourth outer edge portion 12d are collectively referred to as the outer edge portion 12, and the first air outlet 16a to the fourth air outlet 16d are collectively referred to as the air outlet 16.

[0015] Air inlet 14 is a rectangular opening that draws air in. Air inlet 14 is provided at the center of first air outlet 16a to fourth air outlet 16d in a plan view, and is provided facing a floor surface (not shown) that is arranged vertically below in the indoor space.

[0016] Each of the first air outlet 16a to the fourth air outlet 16d is a rectangular opening that blows out the conditioned air in the air conditioner 10. The first air outlet 16a is disposed on the first outer edge portion 12a side, the second air outlet 16b is disposed on the second outer edge portion 12b side, the third air outlet 16c is disposed on the third outer edge portion 12c side, and the fourth air outlet 16d is disposed on the fourth outer edge portion 12d side. The first air outlet 16a is provided with a first wind direction plate 18a. The angle of the air blown out from the first air outlet 16a is adjusted by adjusting the angle of the first wind direction plate 18a. The second air outlet 16b is provided with a second wind direction plate 18b, the third air outlet 16c is provided with a third wind direction plate 18c, and the fourth air outlet 16d is provided with a fourth wind direction plate 18d. Each of the second wind direction vane 18b to the fourth wind direction vane 18d is similar to the first wind direction vane 18a. The first wind direction vane 18a, the second wind direction vane 18b, the third wind direction vane 18c, and the fourth wind direction vane 18d are collectively referred to as wind direction vanes 18.

[0017] The air direction changing louvers 20 are members independent of the air conditioner 10, and are provided on the ceiling surface 2 at a predetermined distance from the air conditioner 10. The air direction changing louvers 20 blow out the air sent from the air conditioner 10 toward the floor surface. Here, the first air direction changing louvers 20a are provided on the first outer edge 12a side, the second air direction changing louvers 20b are provided on the second outer edge 12b side, the third air direction changing louvers 20c are provided on the third outer edge 12c side, and the fourth air direction changing louvers 20d are provided on the fourth outer edge 12d side. The space surrounded by the first air direction changing louvers 20a to the fourth air direction changing louvers 20d and vertically below the ceiling surface 2 corresponds to the inner space 70 described above, and the space outside the inner space 70 is the outer space 72.

[0018] The first air direction changing louver 20a includes a first inner louver 22a, a first outer louver 24a, two first fan boxes 26a, a plurality of first support columns 28a, and a first through space 30a. The first inner louver 22a extends along the first outer edge portion 12a. The first outer louver 24a is separated from the air conditioner 10 by the first inner louver 22a and is arranged next to the first inner louver 22a. Two first fan boxes 26a are arranged between the first inner louver 22a and the first outer louver 24a. In particular, the first fan boxes 26a are arranged at both ends of the first inner louver 22a and the first outer louver 24a. In addition, a first through space 30a that penetrates in the vertical direction is arranged in the space surrounded by the first inner louver 22a, the first outer louver 24a, and the two first fan boxes 26a.

[0019] Each first fan box 26a has a hollow box shape, and a through hole facing the ceiling surface 2 is provided as an inlet 40 on its surface on the ceiling surface 2 side (hereinafter referred to as the "top surface"). The first inner louver 22a has a first inner air outlet 46a facing the floor surface side, and the first outer louver 24a has a first outer air outlet 48a facing the floor surface side. The first inner air outlet 46a and the first outer air outlet 48a are connected to the hollow space of each first fan box 26a. The width of the first inner air outlet 46a is matched to the width of the first outer air outlet 48a.

[0020] A motor 42 and an impeller 44 are disposed in the hollow space of each first fan box 26a, and operation of the motor 42 rotates the impeller 44. As the impeller 44 rotates, each first fan box 26a blows air drawn in from the suction port 40 out from a first inner outlet 46a and a first outer outlet 48a. A plurality of, for example, four, first support pillars 28a are provided on the top surface of each first fan box 26a, connecting the top surface to the ceiling surface 2. The first air direction changing louvers 20a are suspended from the ceiling surface 2 by the plurality of first support pillars 28a.

[0021] The second air direction changing louvers 20b include a second inner louver 22b, a second outer louver 24b, two second fan boxes 26b, a plurality of second support columns 28b, and a second through space 30b. The third air direction changing louvers 20c include a third inner louver 22c, a third outer louver 24c, two third fan boxes 26c, a plurality of third support columns 28c, and a third through space 30c. The fourth air direction changing louvers 20d include a fourth inner louver 22d, a fourth outer louver 24d, two fourth fan boxes 26d, a plurality of fourth support columns 28d, and a fourth through space 30d. The second air direction changing louvers 20b, the third air direction changing louvers 20c, and the fourth air direction changing louvers 20d also have the same configuration as the first air direction changing louvers 20a.

[0022] 2(a)-(b) show the configuration of the air blowing system 100. FIG. 2(a) is a cross-sectional perspective view of the first airflow direction changing louver 20a taken along line B-B' in FIG. 1(a). When the impeller 44 rotates due to the operation of the motor 42, air from the inner space 70 side is sucked in through the suction port 40 as the first inlet airflow 80a. The air from the inner space 70 side corresponds to the air blown out from the air conditioner 10. When the impeller 44 rotates, air from the outer space 72 side is sucked in through the suction port 40 as the second inlet airflow 80b. The first inlet airflow 80a and the second inlet airflow 80b sucked in through the suction port 40 are mixed in the hollow space of the first fan box 26a, and the mixed air is blown out through the first inner outlet 46a and the first outer outlet 48a as the downdraft 82. For example, the amount of air flow of the downward air current 82 blown out from the first inner air outlet 46a is set to be equal to the amount of air flow of the downward air current 82 blown out from the first outer air outlet 48a.

[0023] Air from the inner space 70 side is drawn into the first through space 30a as a first induced airflow 84a by the first inlet airflow 80a. Air from the outer space 72 side is drawn into the first through space 30a as a second induced airflow 84b by the second inlet airflow 80b. The first induced airflow 84a and the second induced airflow 84b are mixed in the first through space 30a, and the mixed air is blown out from the first inlet airflow 80a as a downward airflow 86. It can also be said that the downward airflow 86 is drawn by the downward airflow 82.

[0024] FIG. 2(b) shows an outline of the airflow formed by the airflow system 100. FIG. 2(b) is a cross-sectional view of the airflow system 100 seen from the same direction as the cross-sectional view taken along line A-A' in FIG. 1(b) and the cross-sectional view taken along line B-B' in FIG. 1(c), but shows the air conditioner 10, the first fan box 26a, and the third fan box 26c side by side. The air conditioner 10 is disposed in the center of the inner space 70. A first inlet airflow 80a and a first induced airflow 84a move along the ceiling surface 2 from the center of the inner space 70 toward the first airflow direction changing louver 20a and the third airflow direction changing louver 20c, respectively. In the outer space 72, a second inlet airflow 80b and a second induced airflow 84b move along the ceiling surface 2 toward the first airflow direction changing louver 20a and the third airflow direction changing louver 20c, respectively.

[0025] The first air direction changing louvers 20a and the third air direction changing louvers 20c each blow out a downward air current 82 and a downward air current 86 vertically downward. The downward air currents 82 and 86 move from the ceiling surface 2 toward the floor surface. After descending, the downward air currents 82 and 86 are sucked into the air conditioner 10. Similar air currents are also formed by the second air direction changing louvers 20b and the fourth air direction changing louvers 20d. As a result, an air curtain is formed by the downward air currents 82 and 86 from each air direction changing louver 20, and the inner space 70 and the outer space 72 are partitioned.

[0026] (Variation 1) Next, Modification 1 will be described. In the air blowing system 100 according to Modification 1, the shape of the outer louvers 24 is different from that of the embodiment. The following mainly describes the differences from the embodiment. Figures 3(a)-(c) show the configuration of the air blowing system 100. Figure 3(a) is a perspective view showing the configuration of the air blowing system 100, Figure 3(b) is a cross-sectional view taken along line C-C' in Figure 3(a), and Figure 3(c) is a cross-sectional view taken along line D-D' in Figure 3(a). Figures 3(a)-(c) correspond to Figures 1(a)-(c), respectively. The air blowing system 100 includes an air conditioner 10 and a first air direction changing louver 20a, a second air direction changing louver 20b, a third air direction changing louver 20c, and a fourth air direction changing louver 20d, which are collectively referred to as air direction changing louvers 20. The shape of the first outer louver 24a in the first air direction changing louver 20a is different from that of the past. An upper end of the first outer louver 24a is connected to the ceiling surface 2. The second outer louver 24b, the third outer louver 24c, and the fourth outer louver 24d also have the same shape as the first outer louver 24a.

[0027] 4(a)-(b) show the configuration of the air blowing system 100. FIG. 4(a) is a cross-sectional perspective view of the first airflow direction changing louver 20a taken along line D-D' in FIG. 3(a). When the impeller 44 rotates due to the operation of the motor 42, air from the inner space 70 side is sucked in through the suction port 40 as the first intake airflow 80a. The air from the inner space 70 side corresponds to the air blown out from the air conditioner 10. On the other hand, since the first outer louver 24a is in contact with the ceiling surface 2, air from the outer space 72 side is not sucked into the suction port 40 even when the impeller 44 rotates. The first intake airflow 80a sucked in through the suction port 40 is blown out through the first inner outlet 46a and the second inner outlet 46b as a downward airflow 82.

[0028] The air from the inner space 70 side is drawn into the first through-space 30a as the first induced airflow 84a, attracted by the first introduction airflow 80a. On the other hand, since the first outer louvers 24a are in contact with the ceiling surface 2, the air from the outer space 72 side is not drawn into the first through-space 30a. The drawn-in first induced airflow 84a is blown out of the first through-space 30a as a descending airflow 86. It can also be said that the descending airflow 86 is attracted by the descending airflow 82.

[0029] FIG. 4(b) shows an overview of the airflow formed by the air blowing system 100. FIG. 4(b) is shown similarly to FIG. 2(b). The air conditioner 10 is disposed in the central portion of the inner space 70. A first inlet airflow 80a and a first induced airflow 84a move along the ceiling surface 2 from the central portion of the inner space 70 toward the first airflow direction changing louver 20a and the third airflow direction changing louver 20c, respectively. The first airflow direction changing louver 20a and the third airflow direction changing louver 20c blow out a downward airflow 82 and a downward airflow 86 vertically downward, respectively. The downward airflow 82 and the downward airflow 86 move from the ceiling surface 2 toward the floor surface. The downward airflow 82 and the downward airflow 86 are sucked into the air conditioner 10 after descending. Similar airflows are also formed by the second airflow direction changing louver 20b and the fourth airflow direction changing louver 20d. As a result, an air curtain is formed by the downward air currents 82 and 86 from each air direction changing louver 20, and the inner space 70 and the outer space 72 are separated.

[0030] (Variation 2) Next, a second modification will be described. In the air blowing system 100 according to the second modification, the outer louvers 24 are not provided with an outer air outlet 48, as compared to the embodiment. The following mainly describes the differences from the embodiment. FIG. 5 shows the configuration of the air blowing system 100. FIG. 5 corresponds to an enlarged view of a part of FIG. 2(b). The air conditioner 10 includes the air conditioner 10 and the first air direction changing louvers 20a, the second air direction changing louvers 20b (not shown), the third air direction changing louvers 20c (not shown), and the fourth air direction changing louvers 20d (not shown), which are collectively referred to as air direction changing louvers 20, as in the past. The first inner louvers 22a in the first air direction changing louvers 20a have the first inner air outlet 46a facing the floor surface side, as in the past. On the other hand, the first outer louvers 24a do not have the first outer air outlet 48a, unlike the past. The second airflow direction changing louvers 20b to the fourth airflow direction changing louvers 20d have the same configuration as the first airflow direction changing louver 20a.

[0031] The air conditioner 10 is disposed in the center of the inner space 70. A first introduction airflow 80a and a first induced airflow 84a move along the ceiling surface 2 from the center of the inner space 70 toward the first air direction changing louver 20a. In addition, in the outer space 72, a second introduction airflow 80b and a second induced airflow 84b move along the ceiling surface 2 toward the first air direction changing louver 20a.

[0032] The first introduction airflow 80a and the second introduction airflow 80b are sucked into the intake port 40 of the first fan box 26a. The first inner air outlet 46a in the first inner louver 22a of the first airflow direction changing louver 20a blows out the mixed air of the first introduction airflow 80a and the second introduction airflow 80b vertically downward as a downdraft airflow 82. On the other hand, since the first outer louver 24a does not have the first outer air outlet 48a, the first outer louver 24a does not blow out the downdraft airflow 82 vertically downward. In addition, the first induced airflow 84a and the second induced airflow 84b are sucked into the first through space 30a (not shown). The mixed air of the first induced airflow 84a and the second induced airflow 84b is blown out vertically downward from the first through space 30a as a downdraft airflow 86.

[0033] The air in the inner space 70 and the air in the outer space 72 are attracted by the downward air currents 82 and 86. The downward air currents 82 and 86 move from the ceiling surface 2 toward the floor surface. After descending, the downward air currents 82 and 86 are sucked into the air conditioner 10. Similar air currents are also formed by each of the second air direction changing louvers 20b to the fourth air direction changing louvers 20d. As a result, an air curtain is formed by the downward air currents 82 and 86 from each air direction changing louver 20, and the inner space 70 and the outer space 72 are partitioned.

[0034] (Variation 3) Next, modified example 3 will be described. In the air blowing system 100 according to the embodiment, the air volume of the downward air current 82 from the inner air outlet 46 and the air volume of the downward air current 82 from the outer air outlet 48 are set to be equal. In the air blowing system 100 according to modified example 3, these air volumes are different. The following description will focus on the differences from the embodiment.

[0035] Figures 6(a)-(c) show the configuration of the air blowing system 100. Figure 6(a) corresponds to an enlarged view of a portion of Figure 2(b). As in the past, the air conditioner 10 comprises the air conditioner 10 and a first air direction changing louver 20a, a second air direction changing louver 20b (not shown), a third air direction changing louver 20c (not shown), and a fourth air direction changing louver 20d (not shown), which are collectively referred to as air direction changing louvers 20. Each air direction changing louver 20 has the same configuration.

[0036] The air conditioner 10 is disposed in the center of the inner space 70. A first introduction airflow 80a and a first induced airflow 84a move along the ceiling surface 2 from the center of the inner space 70 toward the first air direction changing louver 20a. In addition, in the outer space 72, a second introduction airflow 80b and a second induced airflow 84b move along the ceiling surface 2 toward the first air direction changing louver 20a.

[0037] The first introduction airflow 80a and the second introduction airflow 80b are sucked into the air inlet 40 of the first fan box 26a. The first inner air outlet 46a in the first inner louver 22a of the first air direction changing louver 20a blows out the mixed air of the first introduction airflow 80a and the second introduction airflow 80b vertically downward as the first downdraft airflow 82a. The first outer air outlet 48a in the first outer louver 24a blows out the mixed air of the first introduction airflow 80a and the second introduction airflow 80b vertically downward as the second downdraft airflow 82b. The first downdraft airflow 82a and the second downdraft airflow 82b are collectively referred to as the downdraft airflow 82.

[0038] Here, the air volume of the first downward air current 82a is set to be greater than the air volume of the second downward air current 82b. As a result, the blowing speed of the second downward air current 82b becomes slower than the blowing speed of the first downward air current 82a, and the first downward air current 82a attracts the second downward air current 82b. As a result, the direction of the second downward air current 82b is directed toward the first downward air current 82a.

[0039] The first induced airflow 84a and the second induced airflow 84b are sucked into the first through-space 30a (not shown). The air obtained by mixing the first induced airflow 84a and the second induced airflow 84b is blown out vertically downward from the first through-space 30a as a downdraft 86. The downdraft 86 is also attracted by the first downdraft 82a, so the direction of the downdraft 86 faces the first downdraft 82a. The first downdraft 82a, the second downdraft 82b, and the downdraft 86 move from the ceiling surface 2 toward the floor surface. The first downdraft 82a, the second downdraft 82b, and the downdraft 86 are sucked into the air conditioner 10 after descending. Similar airflows are also formed by the second airflow direction changing louvers 20b to the fourth airflow direction changing louvers 20d. As a result, an air curtain is formed by the first downward air current 82a, the second downward air current 82b and the downward air current 86 from each air direction changing louver 20, and the inner space 70 and the outer space 72 are separated.

[0040] Figures 6(b)-(c) are enlarged cross-sectional views of the first fan box 26a in Figure 6(a). Figures 6(b)-(c) are shown similarly to Figure 1(d). In the air space of the first fan box 26a, a motor 42 and an impeller 44 are arranged, and an air volume adjustment valve 50 is also arranged. The air volume adjustment valve 50 is movable around a rotation center 52. The movement of the air volume adjustment valve 50 adjusts the air volume to the first inner air outlet 46a and the air volume to the first outer air outlet 48a.

[0041] In the case of Fig. 6(b), the air volume to the first inner air outlet 46a is equal to the air volume to the first outer air outlet 48a. As a result, as in the embodiment, the air volume of the downward air current 82 from the first inner air outlet 46a is equal to the air volume of the downward air current 82 from the first outer air outlet 48a. In the case of Fig. 6(c), the air volume to the first inner air outlet 46a is made larger than the air volume to the first outer air outlet 48a. As a result, as in the third modification, the air volume of the first downward air current 82a from the first inner air outlet 46a is made larger than the air volume of the second downward air current 82b from the first outer air outlet 48a.

[0042] (Variation 4) Next, a fourth modified example will be described. In the air blowing system 100 according to the embodiment, the width of the inner air outlet 46 is matched to the width of the outer air outlet 48. In the air blowing system 100 according to the fourth modified example, the width of the inner air outlet 46 is different from the width of the outer air outlet 48. The following description will focus on the differences from the embodiment.

[0043] Fig. 7 shows the configuration of the air blowing system 100. Fig. 7 corresponds to an enlarged view of a portion of Fig. 2(b). As in the past, the air conditioner 10 comprises the air conditioner 10 and a first air direction changing louver 20a, a second air direction changing louver 20b (not shown), a third air direction changing louver 20c (not shown), and a fourth air direction changing louver 20d (not shown), which are collectively referred to as air direction changing louvers 20. Each air direction changing louver 20 has the same configuration.

[0044] The air conditioner 10 is disposed in the center of the inner space 70. A first introduction airflow 80a and a first induced airflow 84a move along the ceiling surface 2 from the center of the inner space 70 toward the first air direction changing louver 20a. In addition, in the outer space 72, a second introduction airflow 80b and a second induced airflow 84b move along the ceiling surface 2 toward the first air direction changing louver 20a.

[0045] The first introduction airflow 80a and the second introduction airflow 80b are sucked into the air inlet 40 of the first fan box 26a. The first inner air outlet 46a in the first inner louver 22a of the first air direction changing louver 20a blows out the mixed air of the first introduction airflow 80a and the second introduction airflow 80b vertically downward as the first downdraft airflow 82a. The first outer air outlet 48a in the first outer louver 24a blows out the mixed air of the first introduction airflow 80a and the second introduction airflow 80b vertically downward as the second downdraft airflow 82b. The first downdraft airflow 82a and the second downdraft airflow 82b are collectively referred to as the downdraft airflow 82.

[0046] Here, the width of the first inner air outlet 46a is narrower than the width of the second outer air outlet 48b. In this configuration, if the air volume of the first downward air current 82a is equal to the air volume of the second downward air current 82b, the blowing speed of the second downward air current 82b is lower than the blowing speed of the first downward air current 82a, and the first downward air current 82a attracts the second downward air current 82b. As a result, the direction of the second downward air current 82b is directed toward the first downward air current 82a.

[0047] The first induced airflow 84a and the second induced airflow 84b are sucked into the first through-space 30a (not shown). The air obtained by mixing the first induced airflow 84a and the second induced airflow 84b is blown out vertically downward from the first through-space 30a as a downdraft 86. The downdraft 86 is also attracted by the first downdraft 82a, so the direction of the downdraft 86 faces the first downdraft 82a. The first downdraft 82a, the second downdraft 82b, and the downdraft 86 move from the ceiling surface 2 toward the floor surface. The first downdraft 82a, the second downdraft 82b, and the downdraft 86 are sucked into the air conditioner 10 after descending. Similar airflows are also formed by the second airflow direction changing louvers 20b to the fourth airflow direction changing louvers 20d. As a result, an air curtain is formed by the first downward air current 82a, the second downward air current 82b and the downward air current 86 from each air direction changing louver 20, and the inner space 70 and the outer space 72 are separated.

[0048] According to this embodiment, the air direction changing louvers 20 blow out the air sucked in from the air inlet 40 from the inner air outlet 46 and the outer air outlet 48, so that it is possible to suppress the transfer of heat between the inner space 70 conditioned by the air conditioner 10 and the outer space 72 outside the inner space 70. In addition, since the transfer of heat between the inner space 70 and the outer space 72 is suppressed, the inner space 70 and the outer space 72 can be formed in a partitioned manner. In addition, since the inner space 70 and the outer space 72 are formed in a partitioned manner, it is possible to generate an air-conditioned area (space) in a part of the entire room and improve energy saving. In addition, since the air direction changing louvers 20 are connected to the ceiling surface 2 by the support pillars 28, it is possible to fix the air direction changing louvers 20 to the ceiling surface 2. In addition, since the air conditioner 10 is surrounded by the first air direction changing louvers 20a to the fourth air direction changing louvers 20d, it is possible to form the inner space 70 with the air conditioner 10 at the center.

[0049] In addition, because the outer louvers 24 are connected to the ceiling surface 2, it is possible to prevent air in the outer space 72 from being sucked into the air direction changing louvers 20. In addition, because air in the outer space 72 is prevented from being sucked into the air direction changing louvers 20, it is possible to further prevent heat transfer between the inner space 70 and the outer space 72. In addition, because only the inner air outlet 46 blows out the downward air current 82, conditioned air circulates within the inner space 70, and the inner space 70 can be zoned. In addition, because the amount of air from the inner air outlet 46 is greater than the amount of air from the outer air outlet 48, the downward air current 86 passing between the inner louvers 22 and the outer louvers 24 is drawn inward, improving the air curtain effect. In addition, since the air curtain effect is improved, the conditioned air circulates within the inner space 70, and the inner space 70 can be zoned. Also, since the width of the inner air outlet 46 is narrower than the width of the outer air outlet 48, the downward air current 86 passing between the inner louvers 22 and the outer louvers 24 is drawn inward, improving the air curtain effect.

[0050] An outline of one aspect of the present disclosure is as follows. (Item 1) a blower (10) provided on the ceiling surface (2) and configured to blow air along the ceiling surface (2); a louver (20) provided at a predetermined distance from the blower (10) for blowing the air blown from the blower (10) toward a floor surface; The air direction changing louver (20) is An inner louver (22); an outer louver (24) that is spaced apart from the blower (10) relative to the inner louver (22) and aligned with the inner louver (22); a fan box (26) disposed between the inner louver (22) and the outer louver (24), The fan box (26) has an intake port (40) facing the ceiling surface (2), The inner louver (22) has an inner air outlet (46) facing the floor surface side, The outer louver (24) has an outer air outlet (48) facing the floor surface side, The fan box (26) is an air blowing system (100) that draws in the air through the suction port (40) and blows the air out through the inner air outlet (46) and the outer air outlet (48).

[0051] (Item 2) 2. The air blowing system (100) according to item 1, further comprising a support column (28) connecting a surface of the fan box (26) facing the ceiling surface (2) to the ceiling surface (2).

[0052] (Item 3) 2. The ventilation system (100) according to claim 1, wherein the outer louvers (24) are connected to the ceiling surface (2).

[0053] (Item 4) Item 2. The ventilation system (100) according to item 1, wherein the volume of the air blown out from the inner air outlet (46) is greater than the volume of the air blown out from the outer air outlet (48).

[0054] (Item 5) 2. The air blowing system (100) according to item 1, wherein a width of the inner air outlet (46) is narrower than a width of the outer air outlet (48).

[0055] (Item 6) a blower (10) provided on the ceiling surface (2) and configured to blow air along the ceiling surface (2); a louver (20) provided at a predetermined distance from the blower (10) for blowing the air blown from the blower (10) toward a floor surface; The air direction changing louver (20) is An inner louver (22); an outer louver (24) that is spaced apart from the blower (10) relative to the inner louver (22) and aligned with the inner louver (22); a fan box (26) disposed between the inner louver (22) and the outer louver (24), The fan box (26) has an intake port (40) facing the ceiling surface (2), The inner louver (22) has an inner air outlet (46) facing the floor surface side, The fan box (26) is an air blowing system (100) that draws in the air through the suction port (40) and blows the air out through the inner air outlet (46).

[0056] (Item 7) The blower (10) has a first outer edge portion (12), a second outer edge portion (12), a third outer edge portion (12), and a fourth outer edge portion (12) that are in different directions from one another on the ceiling surface (2), and has a first air outlet (16) arranged on the first outer edge portion (12) side, a second air outlet (16) arranged on the second outer edge portion (12) side, a third air outlet (16) arranged on the third outer edge portion (12) side, and a fourth air outlet (16) arranged on the fourth outer edge portion (12) side, The air blowing system (100) according to any one of items 1 to 6, wherein the air direction changing louvers (20) include a first air direction changing louver (20) provided on the first outer edge portion (12) side, a second air direction changing louver (20) provided on the second outer edge portion (12) side, a third air direction changing louver (20) provided on the third outer edge portion (12) side, and a fourth air direction changing louver (20) provided on the fourth outer edge portion (12) side.

[0057] The present disclosure has been described above based on the embodiments. These embodiments are merely illustrative, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process, and that such modifications are also within the scope of the present disclosure. [Explanation of symbols]

[0058] 2 ceiling surface, 10 air conditioner, 11 decorative panel, 12 outer edge, 14 intake port, 16 exhaust port, 18 air direction vane, 20 air direction changing louvers, 22 inner louvers, 24 outer louvers, 26 fan box, 28 support column, 30 through space, 40 intake port, 42 motor, 44 impeller, 46 inner exhaust port, 48 outer exhaust port, 50 air volume control valve, 52 rotation center, 70 inner space, 72 outer space, 80 intake air flow, 82 downdraft air flow, 84 induced air flow, 86 downdraft air flow, 100 ventilation system.

Claims

1. A fan provided on a ceiling surface and configured to blow air along the ceiling surface; a louver for changing the direction of airflow, the louver being provided at a predetermined distance from the blower and for blowing the air blown from the blower toward a floor surface; The airflow direction changing louver is Inner louvers and an outer louver that is spaced apart from the blower relative to the inner louver and that is aligned with the inner louver; a fan box disposed between the inner louver and the outer louver; The fan box has an intake port facing the ceiling surface, The inner louver has an inner air outlet facing the floor surface, The outer louver has an outer air outlet facing the floor surface, The fan box is a ventilation system that draws in the air through the suction port and blows it out through the inner outlet and the outer outlet.

2. The ventilation system according to claim 1 , further comprising a support pillar connecting a surface of the fan box facing the ceiling surface to the ceiling surface.

3. The ventilation system according to claim 1 , wherein the outer louvers are connected to the ceiling surface.

4. The ventilation system according to claim 1 , wherein an amount of the air blown out from the inner air outlet is greater than an amount of the air blown out from the outer air outlet.

5. The ventilation system according to claim 1 , wherein a width of the inner air outlet is narrower than a width of the outer air outlet.

6. A fan provided on a ceiling surface and configured to blow air along the ceiling surface; a louver for changing the direction of airflow, the louver being provided at a predetermined distance from the blower and for blowing the air blown from the blower toward a floor surface; The airflow direction changing louver is Inner louvers and an outer louver that is spaced apart from the blower relative to the inner louver and that is aligned with the inner louver; a fan box disposed between the inner louver and the outer louver; The fan box has an intake port facing the ceiling surface, The inner louver has an inner air outlet facing the floor surface, The fan box is a ventilation system that draws in the air through the suction port and blows it out through the inner air outlet.

7. The blower has a first outer edge portion, a second outer edge portion, a third outer edge portion, and a fourth outer edge portion that are in different directions on the ceiling surface, and has a first air outlet arranged on the first outer edge portion side, a second air outlet arranged on the second outer edge portion side, a third air outlet arranged on the third outer edge portion side, and a fourth air outlet arranged on the fourth outer edge portion side, The air blowing system described in any one of claims 1 to 6, wherein the air direction changing louvers include a first air direction changing louver provided on the first outer edge side, a second air direction changing louver provided on the second outer edge side, a third air direction changing louver provided on the third outer edge side, and a fourth air direction changing louver provided on the fourth outer edge side.

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