Air supply system

Abstract

The present disclosure addresses the problem of providing an air blowing system capable of changing an air blowing direction using a simplified structure of a nozzle. In an air supply system (VS1), a nozzle unit (1) comprises at least two nozzles (10). The at least two nozzles (10) each comprise a housing (10a) having a hollow elongate shape extending in alignment with the first direction. The at least two nozzles (10) are arranged side by side so as to be aligned with a second direction intersecting the first direction. The blowing device (3) is disposed above the nozzle unit (1) and is configured to blow air from a first end (1a) toward a second end (1b) of the nozzle unit (1) in the first direction. The control device (4) is configured to control the air supply device (3). The housing (10a) of each of the at least two nozzles (10) has a lower surface having an air outlet (10b) extending so as to be aligned with the first direction. The air supply outlet (10b) is configured such that air supplied into the housing (10a) can be blown out of the housing (10a) through the air supply outlet (10b).

Description

Technical Field

[0001] The present disclosure relates to an air supply system. Background Art

[0002] Patent document 1 describes an air supply device including a plurality of nozzles of the same length. Each nozzle has an inlet and an outlet. High-pressure air flows into the nozzle through the inlet, and the high-pressure air in the nozzle is blown out through the outlet. The plurality of nozzles are arranged in a manner with gaps between them so that the outlets of the respective nozzles are on the same plane. The gap forms an air path outside the nozzle for being sucked into the flow of high-pressure air blown out through the outlet. The air supply device includes a damper mechanism capable of changing the opening area of ​​the inlet of each nozzle. The air supply device adjusts the opening area of ​​the inlet of each nozzle, thereby adjusting the air supply range.

[0003] In the air blowing device of Patent Document 1, each nozzle must be provided with a damper mechanism capable of changing the opening area of ​​its inlet so as to change the air blowing direction. This results in a complicated nozzle structure.

[0004] Citation List

[0005] Patent Literature

[0006] Patent Document 1: JP2018-003658A Summary of the invention

[0007] An object of the present disclosure is to provide an air supply system capable of changing the air supply direction using a simplified nozzle structure.

[0008] According to one aspect of the present disclosure, an air supply system includes a nozzle unit, an air supply device, and a control device. The nozzle unit includes at least two nozzles, each of which includes a shell, the shell has a hollow elongated shape extending in a manner aligned with a first direction, and the at least two nozzles are arranged side by side in a manner aligned with a second direction intersecting the first direction. The air supply device is arranged above the nozzle unit and is configured to blow air from the first end of the nozzle unit in the first direction toward the second end. The control device is configured to control the air supply device. The shells of the at least two nozzles each have a lower surface, and the lower surface has an air supply port extending in a manner aligned with the first direction. The air supply port is configured so that the air sent into the shell can be blown out of the shell through the air supply port. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a perspective view of an air supply system of an embodiment;

[0010] Figure 2 is a perspective view of an air supply unit included in the air supply system;

[0011] Figure 3 is a cross-sectional side view of the air supply unit;

[0012] Figure 4 is a bottom view of the air supply unit;

[0013] Figure 5 A is a plan view of the right end of the nozzle included in the air supply unit;

[0014] Figure 5 B is a plan view of the left end of the nozzle included in the air supply unit;

[0015] Figure 6 A diagram showing a portion of an air supply unit;

[0016] Figure 7 It is a diagram of the positive downflow of the air supply system;

[0017] Figure 8 It is a diagram of the oblique airflow of the air supply system;

[0018] Fig. 9 is a perspective view of an air supply unit included in the air supply system of the first variation;

[0019] Fig.10 is a cross-sectional side view of the air supply unit of the first variant;

[0020] Fig.11 is a diagram of the positive downflow of the air supply system of the first variant;

[0021] Fig.12 is a diagram of a first oblique airflow of the air supply system of the first variation; and

[0022] Fig.13 2 is a diagram of a second oblique airflow of the air supply system of the first variation. DETAILED DESCRIPTION

[0023] The present embodiment generally relates to an air supply system. More specifically, the present disclosure relates to an air supply system including at least two nozzles each having a hollow elongated shape, the at least two nozzles being arranged parallel to each other.

[0024] Note that the embodiments described below are merely examples of embodiments of the present disclosure. The present disclosure is not limited to the embodiments described below, and various modifications may be made to the embodiments described below as long as the effects of the present disclosure are produced.

[0025] Furthermore, in the following description, unless otherwise indicated, Figure 1The X-axis, Y-axis, and Z-axis that are orthogonal to each other are defined as shown in FIG. For convenience, one of the two directions aligned with the X-axis is defined as the right direction, and the other direction is defined as the left direction. In addition, one of the two directions aligned with the Y-axis is defined as the front direction, and the other direction is defined as the rear direction. In addition, one of the two directions aligned with the Z-axis is defined as the upper direction, and the other direction is defined as the lower direction.

[0026] (Example)

[0027] (1) Overview

[0028] Figure 1 The air supply system VS1 of the present embodiment is shown. The air supply system VS1 is used in facilities such as office buildings, offices, retail stores, factories, or commercial facilities. In addition, the air supply system VS1 can be used in, for example, residential units of multi-family houses or detached houses. It is assumed that the air supply system VS1 is installed in a building such as a facility or a house, but it can also be installed in other structures other than buildings.

[0029] The air supply system VS1 of the present embodiment includes a nozzle unit 1, an air supply device 3 and a control device 4. The nozzle unit 1 includes at least two nozzles 10. The at least two nozzles 10 each include a shell 10a having a hollow elongated shape extending in a manner aligned with a first direction. At least two nozzles 10 are arranged side by side in a manner aligned with a second direction intersecting the first direction. The air supply device 3 is disposed above the nozzle unit 1, and blows air from a first end 1a of the nozzle unit 1 in the first direction toward a second end 1b. The control device 4 controls the air supply device 3. The shell 10a of each of the at least two nozzles 10 has a lower surface having an air supply port 10b extending in a manner aligned with the first direction. The air supply port 10b enables the air sent into the shell 10a to be blown out of the shell 10a through the air supply port 10b.

[0030] In the air supply system VS1 having the above configuration, the control device 4 controls the air supply device 3 to change the air supply direction without providing a damper mechanism to each nozzle as disclosed in Patent Document 1. That is, the air supply system VS1 can change the air supply direction with a simplified structure of each nozzle 10 .

[0031] Note that in the present embodiment, the first direction corresponds to the left / right direction aligned with the X-axis, and the second direction corresponds to the front / rear direction aligned with the Y-axis.

[0032] (2) Details

[0033] like Figure 1As shown, the air supply system VS1 is installed in the room R1. The room R1 is a space where one or more people exist, such as a workspace, a meeting room, a lounge, a waiting room, a reception room, or a living room. The room R1 has an upper surface as a ceiling R11, and the room R1 has a lower surface as a floor R12.

[0034] The air supply system VS1 includes a nozzle unit 1, an air supply device 3 and a control device 4. The nozzle unit 1 includes eight nozzles 10. In addition, the air supply system VS1 preferably also includes a first nozzle blower 21 and a second nozzle blower 22. In this embodiment, the nozzle unit 1, the first nozzle blower 21 and the second nozzle blower 22 are included in the air supply unit U1.

[0035] Furthermore, the air supply system VS1 preferably includes an operating device 5 and a human detection sensor 6 .

[0036] (2.1) Air supply unit

[0037] For example, the air supply unit U1 is fixed to the lower surface of the ceiling R11 using hanging bolts or wires (not shown). Figures 2 to 4 As shown, the air supply unit U1 includes a nozzle unit 1 , a first nozzle air blower 21 and a second nozzle air blower 22 .

[0038] The nozzle unit 1 includes eight nozzles 10. These nozzles 10 include respective housings 10a, each of which has a hollow rectangular plate shape with a long side extending in the left / right direction aligned with the X-axis. Each housing 10a has a lower surface having a rectangular opening with a long side extending in the left / right direction as an air supply port 10b. The air supply port 10b is formed at the center in the front / rear direction in the lower surface of the housing 10a. The housings 10a of the eight nozzles 10 are arranged parallel to each other in the front / rear direction aligned with the Y-axis. The housing 10a of one nozzle 10 has a front surface, which faces the rear surface of the housing 10a of another nozzle 10 disposed in front of the one nozzle 10 and adjacent to the one nozzle 10. The housing 10a of the one nozzle 10 has a rear surface, which faces the front surface of the housing 10a of another nozzle 10 disposed behind the one nozzle 10 and adjacent to the one nozzle 10. The housing 10a is made of, for example, a resin material, but may be made of a lightweight metal material such as aluminum.

[0039] The shells 10a each have an internal space in which a partition plate 10c is provided at a central portion in the longitudinal direction of the corresponding shell 10a. The partition plate 10c divides the internal space of the shell 10a into two spaces (i.e., a right space 10d and a left space 10e, wherein the right space 10d is a space on the right side and the left space 10e is a space on the left side).

[0040] like Figure 5 As shown in A of FIG. 1 , each housing 10a has a right end, and the right end has an opening 10f. The right space 10d is connected to the outside of the housing 10a via the opening 10f. Figure 5 As shown in FIG. 1B , the housing 10a has a left end having an opening 10g. The left space 10e communicates with the outside of the housing 10a via the opening 10g.

[0041] like Figure 3 , Figure 4 , Figure 5 A and Figure 5 As shown in B, on the lower surface below the right space 10d and the left space 10e, a plurality of fins 10h are arranged side by side at regular intervals in the left / right direction in an X-axis aligned manner. The fins 10h each have a plate shape extending upward from the lower surface below the right space 10d and the left space 10e, and when viewed in a direction aligned with the X-axis, the fins 10h each close the lower portion of the right space 10d and the left space 10e (a portion of the lower side of the right space 10d and the left space 10e). Figure 4 As shown, when the housing 10a of the nozzle 10 is viewed from below, the plurality of fins 10h are positioned so that the air supply ports 10b are spaced apart at regular intervals in alignment with the X-axis.

[0042] The first nozzle blower 21 is a cross flow fan. Figures 2 to 4 As shown, the first nozzle blower 21 includes: a hollow parallelepiped-shaped housing 21a; and a fan 21b in the housing 21a. The first nozzle blower 21 is arranged at the right end (first end) 1a of the nozzle unit 1. The housing 21a has a left surface facing the right end surface of the nozzle unit 1. The housing 21a is connected to a duct not shown, and air is supplied to the housing 21a through the duct. The left surface of the housing 21a has an air supply port 21c (see Figure 3 ). The air blown to the left through the air outlet 21c by the rotation of the fan 21b flows into the right space 10d through the opening 10f of each nozzle 10 of the nozzle unit 1. That is, the first nozzle blower 21 sends air into the right space 10d through the opening 10f of each nozzle 10, thereby generating an internal airflow F11 flowing from the opening 10f to the left in the right space 10d (see Figure 3 ). The internal air flow F11 is rectified by the fins 10h in the right space 10d and blown downward through the air outlet 10b formed in the lower surface of the housing 10a. Figure 5 As shown in A, the width of the lower portion of the right space 10d in the front / rear direction is preferably narrowed downward.

[0043] The second nozzle blower 22 is a cross flow fan. Figures 2 to 4As shown, the second nozzle blower 22 includes: a hollow parallelepiped-shaped housing 22a; and a fan 22b in the housing 22a. The second nozzle blower 22 is arranged at the left end (second end) 1b of the nozzle unit 1. The housing 22a has a right surface facing the left end surface of the nozzle unit 1. The housing 22a is connected to a duct not shown, and air is supplied to the housing 22a through the duct. The right surface of the housing 22a has an air supply port 22c (see Figure 3 ). The air blown rightward through the air outlet 22c by the rotation of the fan 22b flows into the left space 10e through the opening 10g of each nozzle 10 of the nozzle unit 1. That is, the second nozzle blower 22 sends air into the left space 10e through the opening 10f of each nozzle 10, thereby generating an internal airflow F12 flowing rightward from the opening 10g in the left space 10e (see Figure 3 ). The internal air flow F12 is rectified by the fins 10h in the left space 10e and blown downward through the air outlet 10b formed in the lower surface of the housing 10a. Figure 5 As shown in B, the width of the lower portion of the left space 10e in the front / rear direction is preferably narrowed downward.

[0044] That is to say, Figure 6 As shown, each of the eight nozzles 10 included in the nozzle unit 1 blows air downward through an air supply port 10b having an elongated shape and formed in the lower surface of the corresponding housing 10a in the housing 10a, thereby generating an air supply airflow F2. Note that, Figure 6 Arbitrary two nozzles 10 among the eight nozzles 10 included in the nozzle unit 1 are shown, and the two nozzles 10 are arranged side by side in the front / rear direction in a manner aligned with the Y axis.

[0045] In this embodiment, a plurality of nozzles 10 are formed between two nozzles 10 adjacent to each other in the front / rear direction. Figure 6 The suction path 91 shown. The suction path 91 is a space that is provided between the rear surface of the housing 10a of the front nozzle in the front / rear direction of the two nozzles 10 and the front surface of the housing 10a of the rear nozzle in the front / rear direction of the two nozzles 10 so that the space is open up and down. When the two nozzles 10 arranged side by side each generate an air supply airflow F2 that is blown downward through the air supply port 10b, a negative pressure is generated in the suction path 91, and the air in the upper space 92, which is the space above the two nozzles 10, is sucked into the suction path 91 from top to bottom. The air sucked into the suction path 91 from top to bottom is blown downward through the suction path 91. The air blown downward through the suction path 91 generates an intake airflow F3 that flows downward from the suction path 91.

[0046] As a result, below the nozzle unit 1, an inhalation airflow F3 is generated between two flows of the supply airflow F2 generated by two adjacent nozzles 10, and a downward airflow F1 is generated as a combination of the supply airflow F2 and the inhalation airflow F3. The downward airflow F1 is blown downward from the nozzle unit 1.

[0047] When the flow rate of the downward airflow F1 at the air outlet 10b is defined as the air supply volume of the nozzle unit 1, the air supply volume of the nozzle unit 1 increases as the rotation speeds of the fans 21b and 22b increase, and the air supply volume of the nozzle unit 1 decreases as the rotation speeds of the fans 21b and 22b decrease. The rotation speeds of the fans 21b and 22b are controlled by the control device 4.

[0048] (2.2) Air supply device

[0049] The air blower 3 is a cross-flow fan and is disposed above the nozzle unit 1 , draws in ambient air, and blows the air from the right end (first end) 1 a of the nozzle unit 1 toward the left end (second end) 1 b.

[0050] Specifically, Figure 3 As shown, the air supply device 3 is arranged above the first nozzle blower 21 (or above the right end 1a of the nozzle unit 1). For example, the air supply device 3 is fixed to the lower surface of the ceiling R11 using a hanging bolt or wire not shown. The air supply device 3 includes: a hollow parallelepiped-shaped housing 3a; and a fan 3b in the housing 3a. The housing 3a has a left surface, and the left surface has an air supply port 3c. The air blown to the left through the air supply port 3c by the rotation of the fan 3b is an air supply airflow F21 flowing from right to left above the nozzle unit 1.

[0051] When the flow rate of the air supply airflow F21 at the air supply port 3c is defined as the air supply volume of the air supply device 3, the air supply volume of the air supply device 3 increases as the rotation speed of the fan 3b increases. In addition, the air supply volume of the air supply device 3 decreases as the rotation speed of the fan 3b decreases. The rotation speed of the fan 3b is controlled by the control device 4.

[0052] (2.3) Control device

[0053] The control device 4 controls at least the air supply device 3. In this embodiment, the control device 4 controls the air supply device 3, the first nozzle air blower 21 and the second nozzle air blower 22.

[0054] The control device 4 performs wired or wireless communication with the air supply device 3, the first nozzle air supply fan 21, and the second nozzle air supply fan 22, thereby controlling the air supply volume of each of the air supply device 3, the first nozzle air supply fan 21, and the second nozzle air supply fan 22. In addition, the control device 4 performs wired or wireless communication with the operating device 5 and the human detection sensor 6, thereby acquiring an operation signal from the operating device 5 and a sensor signal from the human detection sensor 6. Note that wired communication is, for example, wired communication through a twisted pair cable, a dedicated communication line, or a local area network (LAN) cable. Wireless communication is wireless communication that complies with standards such as Wi-Fi (registered trademark), Bluetooth (registered trademark), ZigBee (registered trademark), or a low-power radio (specific low-power radio) that does not require a license.

[0055] The operating device 5 includes a switch or a touch panel for giving various instructions to the air supply device 3, the first nozzle air supply fan 21, and the second nozzle air supply fan 22, and receives the operation given by the user. The operating device 5 sends an operation signal corresponding to the operation given by the user to the control device 4. Specifically, the operating device 5 receives operations related to, for example, operation, deactivation, and air supply direction. The control device 4 controls the operation, deactivation, and air supply volume during operation of the air supply device 3, the first nozzle air supply fan 21, and the second nozzle air supply fan 22 based on the operation signal received from the operating device 5.

[0056] The human detection sensor 6 detects the presence and position of a person in the room R1, and sends the sensing result as a sensor signal to the control device 4. The control device 4 controls the operation, deactivation, and air supply volume during operation of the air supply device 3, the first nozzle blower 21, and the second nozzle blower 22, respectively, based on the sensor signal received from the human detection sensor 6.

[0057] Therefore, the control device 4 switches between operation and deactivation of the air supply device 3, the first nozzle blower 21 and the second nozzle blower 22 respectively based on the operation given by the user and received by the operating device 5 and the sensing result of the human detection sensor 6, and adjusts the air supply volume of the air supply device 3, the first nozzle blower 21 and the second nozzle blower 22 respectively during operation.

[0058] (2.4) Operation of air supply system

[0059] In the air supply system VS1, the control device 4 controls the air supply device 3, the first nozzle blower 21, and the second nozzle blower 22, thereby adjusting the direction of the airflow generated below the nozzle unit 1. In the present embodiment, the control device 4 puts the first nozzle blower 21 and the second nozzle blower 22 into operation, and then adjusts the operation, deactivation, and air supply volume of the air supply device 3, thereby changing the direction of the airflow generated below the nozzle unit 1 (air supply direction).

[0060] (2.4.1) Positive downdraft

[0061] Figure 7 A positive downward airflow F31 is shown, which is an airflow generated below the nozzle unit 1 when the first nozzle blower 21 and the second nozzle blower 22 are in operation and the air supply device 3 is in a deactivated state.

[0062] In this case, the downward airflow F1 is being blown downward from the nozzle unit 1. In contrast, no air supply airflow F21 is being blown out through the air supply port 3c of the air supply device 3. Thus, the downward airflow F1 blown downward from the nozzle unit 1 travels in the directly downward direction (vertically downward direction), and a directly downward airflow F31 traveling in the directly downward direction is generated below the nozzle unit 1.

[0063] (2.4.2) Oblique airflow

[0064] Figure 8 An oblique airflow F32 is shown, which is an airflow generated below the nozzle unit 1 when the first nozzle blower 21 and the second nozzle blower 22 are in operation and the air supply device 3 is also in operation.

[0065] In this case, the downward airflow F1 is being blown downward from the nozzle unit 1. In addition, above the nozzle unit 1, the air supply airflow F21 is being blown to the left through the air supply port 3c of the air supply device 3. The air supply airflow F21 flowing from right to left above the nozzle unit 1 is sucked downward into the downward airflow F1 blown out from the nozzle unit 1, passes between two nozzles 10 adjacent to each other in the front / rear direction, and moves obliquely downward to the left. As a result, the downward airflow F1 is sucked into the air supply airflow F21 moving obliquely downward to the left below the nozzle unit 1, and the downward airflow F1 thereby also moves obliquely downward to the left. Thus, an oblique airflow F32 moving obliquely downward to the left is generated below the nozzle unit 1.

[0066] The direction of the oblique airflow F32 approaches the horizontal direction as the air volume of the air supply device 3 increases (as the air volume of the air supply airflow F21 increases). In addition, the direction of the oblique airflow F32 approaches the downward direction as the air volume of the air supply device 3 decreases (as the air volume of the air supply airflow F21 decreases). In other words, the control device 4 adjusts the air volume of the air supply device 3 to control the direction of the oblique airflow F32.

[0067] (2.4.3) Swinging airflow

[0068] The control device 4 periodically switches between the operation and deactivation of the air supply device 3, so that the positive downward airflow F31 (see Figure 7) and oblique airflow F32 (see Figure 8 ) are periodically switched between. As a result, the air supply system VS1 can generate a swinging airflow by alternately generating a downward airflow F31 and an oblique airflow F32 below the nozzle unit 1.

[0069] In addition, the control device 4 periodically increases and decreases the air supply volume of the air supply device 3, thereby periodically changing the oblique air flow F32 (see Figure 8 ) direction of travel. The control device 4 alternately repeats the increase time period for increasing the air supply amount of the air supply device 3 and the decrease time period for decreasing the air supply amount of the air supply device 3. As a result, the air supply system VS1 can generate a swinging airflow that causes the travel direction of the oblique airflow F32 to continuously change below the nozzle unit 1.

[0070] Note that the control device 4 causes the air supply volume of the air supply device 3 to periodically increase and decrease between zero and a target value, thereby realizing a swinging airflow that continuously changes between the direct downward airflow F31 and the oblique airflow F32.

[0071] As described above, in the air supply system VS1, the control device 4 controls the air supply device 3, thereby generating the positive downward airflow F31 and the oblique airflow F32. In addition, the control device 4 switches between the operation and deactivation of the air supply device 3 or periodically changes the air supply amount of the air supply device 3, thereby generating a swinging airflow. That is, the air supply system VS1 is capable of changing the air supply direction without providing a damper mechanism to each nozzle. That is, the air supply system VS1 is capable of changing the air supply direction using the simplified structure of each nozzle 10.

[0072] (3) First variant

[0073] Fig. 9 and Fig.10 Note that the other configurations are similar to those of the above-described embodiment, and similar components are denoted by the same reference numerals as those in the embodiment, and descriptions thereof are omitted.

[0074] The air supply unit U2 corresponds to the air supply unit U1 which also includes an air supply device 3 arranged above the second nozzle air supply fan 22 (or above the left end 1b of the nozzle unit 1). Note that in the following description, the air supply device 3 arranged above the first nozzle air supply fan 21 is referred to as the first air supply device 31, and the air supply device 3 arranged above the second nozzle air supply fan 22 is referred to as the second air supply device 32.

[0075] The second air supply device 32 has a housing 3a, and the housing 3a has a right surface with an air supply port 3c. The air blown to the right through the air supply port 3c by the rotation of the fan 3b is an air supply airflow F22 flowing from left to right above the nozzle unit 1 (see Fig.10 ).

[0076] In the present modification, the control device 4 switches between operation and deactivation of each of the first air supply device 31, the second air supply device 32, the first nozzle air supply fan 21, and the second nozzle air supply fan 22, and adjusts the air supply amount of each of the first air supply device 31, the second air supply device 32, the first nozzle air supply fan 21, and the second nozzle air supply fan 22 during operation based on the operation given by the user and received by the operating device 5 and the sensing result of the human detection sensor 6. Thus, the control device 4 puts the first nozzle air supply fan 21 and the second nozzle air supply fan 22 into an operating state, and then controls the operation, deactivation, and air supply amount of each of the first air supply device 31 and the second air supply device 32, thereby adjusting the direction of the airflow to be generated below the nozzle unit 1 (air supply direction).

[0077] (3.1) Positive downdraft

[0078] Fig.11 A positive downward airflow F41 is shown, which is an airflow generated below the nozzle unit 1 when the first nozzle blower 21 and the second nozzle blower 22 are in operation and the first air supply device 31 and the second air supply device 32 are in deactivation.

[0079] In this case, the downward airflow F1 is being blown downward from the nozzle unit 1. In contrast, neither the air supply airflow F21 nor the air supply airflow F22 is being blown out through the air supply ports 3c of the first air supply device 31 and the second air supply device 32, respectively. Thus, the downward airflow F1 blown downward from the nozzle unit 1 travels in the downward direction (vertically downward direction), and a downward airflow F41 traveling in the downward direction is generated below the nozzle unit 1.

[0080] (3.2) First oblique airflow

[0081] Fig.12 The first oblique airflow F42 is shown, which is the airflow generated under the nozzle unit 1 when the first nozzle blower 21 and the second nozzle blower 22 are in operation and the first air supply device 31 is also in operation. At this time, the second air supply device 32 is in an inactive state.

[0082] In this case, the downward airflow F1 is being blown downward from the nozzle unit 1. In addition, above the nozzle unit 1, the air supply airflow F21 is being blown to the left from the air supply port 3c of the first air supply device 31. The air supply airflow F21 flowing from right to left above the nozzle unit 1 is sucked downward into the downward airflow F1 blown out from the nozzle unit 1, passes between two nozzles 10 adjacent to each other in the front / rear direction, and moves diagonally downward to the left. As a result, the downward airflow F1 is sucked into the air supply airflow F21 moving diagonally downward to the left below the nozzle unit 1, and the downward airflow F1 thereby also moves diagonally downward to the left. Thus, a first oblique airflow F42 moving diagonally downward to the left is generated below the nozzle unit 1.

[0083] The direction of the first oblique airflow F42 approaches the horizontal direction as the air volume of the first air supply device 31 increases (as the air volume of the air supply airflow F21 increases). In addition, the direction of the first oblique airflow F42 approaches the downward direction as the air volume of the first air supply device 31 decreases (as the air volume of the air supply airflow F21 decreases). In other words, the control device 4 adjusts the air volume of the first air supply device 31, thereby controlling the direction of the first oblique airflow F42.

[0084] (3.3) Second oblique airflow

[0085] Fig.13 The second oblique airflow F43 is shown, which is the airflow generated under the nozzle unit 1 when the first nozzle blower 21 and the second nozzle blower 22 are in operation and the second air supply device 32 is also in operation. At this time, the first air supply device 31 is in a disabled state.

[0086] In this case, the downward airflow F1 is being blown downward from the nozzle unit 1. In addition, above the nozzle unit 1, the air supply airflow F22 is being blown to the right through the air supply port 3c of the second air supply device 32. The air supply airflow F22 flowing from left to right above the nozzle unit 1 is sucked downward into the downward airflow F1 blown out from the nozzle unit 1, passes between two nozzles 10 adjacent to each other in the front / rear direction, and moves diagonally downward to the right. As a result, the downward airflow F1 is sucked into the air supply airflow F22 moving diagonally downward to the right under the nozzle unit 1, and the downward airflow F1 also moves diagonally downward to the right. Thus, a second oblique airflow F43 moving diagonally downward to the right is generated below the nozzle unit 1.

[0087] The traveling direction of the second oblique airflow F43 approaches the horizontal direction as the air supply volume of the second air supply device 32 increases (as the air volume of the air supply airflow F22 increases). In addition, the traveling direction of the second oblique airflow F43 approaches the downward direction as the air supply volume of the second air supply device 32 decreases (as the air volume of the air supply airflow F22 decreases). In other words, the control device 4 adjusts the air supply volume of the second air supply device 32, thereby controlling the traveling direction of the second oblique airflow F43.

[0088] (3.4) Swinging airflow

[0089] The control device 4 can switch between the operation and deactivation of the first air supply device 31 and the second air supply device 32. Therefore, the control device 4 preferably switches alternately between the operation period of the first air supply device 31 and the operation period of the second air supply device 32, so that the first oblique airflow F42 (see Fig.12 ) and the second oblique airflow F43 (see Fig.13 ) periodically switch between the first and second oblique airflows F42 and F43. As a result, the air supply system VS1 can generate an oscillating airflow by alternately generating the first oblique airflow F42 and the second oblique airflow F43 under the nozzle unit 1. That is, the air supply system VS1 controls the first air supply device 31 and the second air supply device 32, thereby expanding the variable range of the air supply direction.

[0090] In addition, when switching alternately between the operating period of the first air supply device 31 and the operating period of the second air supply device 32, the control device 4 can provide a completely deactivated period between the operating period of the first air supply device 31 and the operating period of the second air supply device 32, during which both the first air supply device 31 and the second air supply device 32 are deactivated. In this case, the air supply system VS1 can realize the swinging airflow by repeatedly generating the flow of the airflow in the order of the first oblique airflow F42 → the downward airflow F41 → the second oblique airflow F43 → the downward airflow F41 → the first oblique airflow F42 below the nozzle unit 1. Thus, the air supply system VS1 can generate a smooth swinging airflow.

[0091] In addition, the control device 4 preferably increases the air supply volume of the first air supply device 31 from zero to the first target value, and then reduces the air supply volume to zero during the operation period of the first air supply device 31. In this case, the travel direction of the first oblique airflow F42 changes continuously below the nozzle unit 1. Similarly, the control device 4 preferably increases the air supply volume of the second air supply device 32 from zero to the second target value, and then reduces the air supply volume to zero during the operation period of the second air supply device 32. In this case, the travel direction of the second oblique airflow F43 changes continuously below the nozzle unit 1. Thus, the air supply system VS1 can smoothly change the air supply direction, thereby realizing a swinging airflow that continuously changes the travel directions of each of the first oblique airflow F42 and the second oblique airflow F43.

[0092] Specifically, during the operation period of the first air supply device 31, the traveling direction of the first oblique airflow F42 gradually changes from the downward direction to the left direction, and then gradually returns from the left direction to the downward direction. When the traveling direction of the first oblique airflow F42 returns to the downward direction, the operation period of the first air supply device 31 ends, and the operation period of the second air supply device 32 begins. During the operation period of the second air supply device 32, the traveling direction of the second oblique airflow F43 gradually changes from the downward direction to the right direction, and then gradually returns from the right direction to the downward direction. When the traveling direction of the second oblique airflow F43 returns to the downward direction, the operation period of the second air supply device 32 ends, and the operation period of the first air supply device 31 begins. Repeating the above operation realizes a swinging airflow that continuously changes the traveling directions of the first oblique airflow F42 and the second oblique airflow F43.

[0093] In addition, the control device 4 can continuously adjust the ratio between the air supply volume of the first air supply device 31 and the air supply volume of the second air supply device 32, thereby continuously changing the air supply direction of the swinging airflow.

[0094] As described above, in the first modification, the control device 4 controls the first air supply device 31 and the second air supply device 32, thereby generating a positive downward airflow F41, a first oblique airflow F42, and a second oblique airflow F43. In addition, the control device 4 switches between the operation and deactivation of the first air supply device 31 and the second air supply device 32, respectively, or periodically changes the air supply volume of the first air supply device 31 and the second air supply device 32, respectively, thereby generating a swinging airflow. That is, the air supply system VS1 is capable of changing the air supply direction without providing a damper mechanism to each nozzle. That is, the air supply system VS1 is capable of changing the air supply direction by utilizing the simplified structure of each nozzle 10.

[0095] (4) Second variant

[0096] Each of the first nozzle blower 21, the second nozzle blower 22, and the air supply device 3 may be a component other than a cross flow fan, and may be, for example, a sirocco fan or a propeller fan.

[0097] Furthermore, the air extraction of each of the first nozzle blower 21, the second nozzle blower 22, and the air supply device 3 may be air extraction via a duct or extraction of air around the housing.

[0098] The air supply unit U1 and the air supply unit U2 may each include a duct through which high-pressure air flows, instead of the air supply device 3. In this case, air is supplied from the duct to each nozzle 10 of the nozzle unit 1.

[0099] The nozzle unit 1 includes at least two nozzles 10 .

[0100] Furthermore, the structural component to which each of the air supply unit U1 and the air supply unit U2 is to be attached is not limited to the ceiling R11 but may be other structural components such as a bracket provided at an upper portion in the room R1.

[0101] Furthermore, the respective configurations of the above-described embodiment and modifications can be combined with each other accordingly, and the effects of the respective configurations can be obtained as well.

[0102] (5) Summary

[0103] According to the first aspect of the above-mentioned embodiment, the air supply system (VS1) includes a nozzle unit (1), an air supply device (3) and a control device (4). The nozzle unit (1) includes at least two nozzles (10). The at least two nozzles (10) each include a shell (10a), the shell (10a) having a hollow elongated shape extending in a manner aligned with a first direction, and the at least two nozzles (10) are arranged side by side in a manner aligned with a second direction intersecting the first direction. The air supply device (3) is arranged above the nozzle unit (1) and is configured to blow air from a first end (1a) of the nozzle unit (1) in the first direction toward a second end (1b). The control device (4) is configured to control the air supply device (3). The shell (10a) of each of the at least two nozzles (10) has a lower surface, and the lower surface has an air supply port (10b) extending in a manner aligned with the first direction. The air supply port (10b) is configured so that the air supplied into the housing (10a) can be blown out of the housing (10a) through the air supply port (10b).

[0104] The air supply system (VS1) can change the air supply direction by utilizing the simplified structure of the nozzle (10).

[0105] In the air supply system (VS1) of the second aspect according to the above-mentioned embodiment and with reference to the first aspect, the control device (4) is preferably configured to adjust the air supply volume of the air supply device (3).

[0106] The air supply system (VS1) adjusts the air supply volume of the air supply device (3), thereby smoothly changing the air supply direction.

[0107] In the air supply system (VS1) of the third aspect according to the above embodiment and with reference to the first aspect or the second aspect, the control device (4) is preferably configured to periodically increase and decrease the air supply volume of the air supply device (3).

[0108] The air supply system (VS1) is configured to generate a swinging airflow.

[0109] In the air supply system (VS1) of the fourth aspect according to the above embodiment and with reference to the first aspect, the air supply device (3) is preferably a first air supply device (31), and the air supply system (VS1) preferably also includes a second air supply device (32). The second air supply device (32) is arranged above the nozzle unit (1) and is configured to blow air from the second end (1b) in the first direction toward the first end (1a). The control device (4) is configured to control the first air supply device (31) and the second air supply device (32).

[0110] The air supply system (VS1) controls the first air supply device (31) and the second air supply device (32), thereby expanding the variable range of the air supply direction.

[0111] In the air supply system (VS1) of the fifth aspect according to the above embodiment and with reference to the fourth aspect, the control device (4) is preferably configured to alternately switch between the operating period of the first air supply device (31) and the operating period of the second air supply device (32).

[0112] The above-mentioned air supply system (VS1) is configured to generate a swinging airflow in a further extended range.

[0113] In the air supply system (VS1) of the sixth aspect according to the above-mentioned embodiment and with reference to the fifth aspect, the control device (4) is preferably configured to set a complete deactivation period between the operating period of the first air supply device (31) and the operating period of the second air supply device (32), during which both the first air supply device (31) and the second air supply device (32) are deactivated.

[0114] The air supply system (VS1) is configured to generate a smooth oscillating airflow.

[0115] In the air supply system (VS1) of the seventh aspect according to the above embodiment and with reference to any one of the fourth to sixth aspects, the control device (4) is preferably configured to adjust the air supply volume of the first air supply device (31) and the second air supply device (32).

[0116] The air supply system (VS1) adjusts the air supply volumes of the first air supply device (31) and the second air supply device (32), respectively, thereby smoothly changing the air supply direction.

[0117] In the air supply system (VS1) of the eighth aspect according to the above-mentioned embodiment and with reference to the seventh aspect, the control device (4) is preferably configured to increase the air supply volume of the first air supply device (31) from zero to a first target value during the operation period of the first air supply device (31), and then reduce the air supply volume to zero. The control device (4) is preferably configured to increase the air supply volume of the second air supply device (32) from zero to a second target value during the operation period of the second air supply device (32), and then reduce the air supply volume to zero.

[0118] The above-mentioned air supply system (VS1) is configured to smoothly change the air supply direction.

[0119] Reference numerals list

[0120] VS1 air supply system

[0121] 1 Nozzle Unit

[0122] 1a Right end (first end)

[0123] 1b Left end (second end)

[0124] 10 Nozzles

[0125] 10a housing

[0126] 10b air outlet

[0127] 3. Air supply device

[0128] 31 First air supply device

[0129] 32 Second air supply device

[0130] 4 Control device

Claims

1. An air supply system, comprising: a nozzle unit including at least two nozzles, each of the at least two nozzles including a housing having a hollow elongated shape extending in a manner aligned with a first direction, the at least two nozzles being arranged side by side in a manner aligned with a second direction intersecting the first direction; an air supply device disposed above the nozzle unit and configured to blow air from a first end toward a second end of the nozzle unit in the first direction; as well as a control device configured to control the air supply device, The housing of each of the at least two nozzles has a lower surface, and the lower surface has an air supply port extending in a manner aligned with the first direction, and The air outlet is configured so that the air sent into the housing can be blown out of the housing through the air outlet.

2. The air supply system according to claim 1, wherein: The control device is configured to adjust the air supply volume of the air supply device.

3. The air supply system according to claim 1 or 2, wherein: The control device is configured to periodically increase and decrease the air supply volume of the air supply device.

4. The air supply system according to claim 1, wherein: The air supply device is a first air supply device, The air supply system further includes a second air supply device, which is arranged above the nozzle unit and is configured to blow air from the second end in the first direction toward the first end, and The control device is configured to control the first air supply device and the second air supply device.

5. The air supply system according to claim 4, wherein: The control device is configured to alternately switch between an operation period of the first air supply device and an operation period of the second air supply device.

6. The air supply system according to claim 5, wherein: The control device is configured to set a complete deactivation period between an operation period of the first air supply device and an operation period of the second air supply device, during which both the first air supply device and the second air supply device are stopped.

7. The air supply system according to any one of claims 4 to 6, wherein: The control device is configured to adjust air supply volumes of the first air supply device and the second air supply device.

8. The air supply system according to claim 7, wherein: The control device is configured to: During an operation period of the first air supply device, increasing the air supply volume of the first air supply device from zero to a first target value, and then reducing the air supply volume to zero; as well as During the operation period of the second air supply device, the air supply amount of the second air supply device is increased from zero to a second target value, and then the air supply amount is reduced to zero.

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