Blower system

Abstract

The present invention addresses the problem of providing an air blowing system with which it is possible to freely adjust the flow of air in an air-conditioned space. This air blowing system (1) comprises a plurality of air blowing devices (3) installed on the ceiling of an air-conditioned space (9). Each of the plurality of air blowing devices (3) has a housing (31), a straightening plate (32), and a driving mechanism (33). The housing (31) is formed in a box shape having an inner space (310), and has an intake port (31g) that feeds supply air into the inner space (310), an air blowing port (31h) for blowing out, as blowing air to the air-conditioned space (9), the supply air that has passed through the inner space (310), and a throttle part (31i) that narrows the inner space (310) toward the circumferential edge of the air blowing port (31h). The straightening plate (32) is disposed between the intake port (31g) and the air blowing port (31h). The driving mechanism (33) moves the straightening plate (32).

Description

Technical Field

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

Background Art

[0002] The air purifying apparatus of Patent Document 1 includes a casing having an air inlet and an air outlet, and a guide plate is provided inside the casing. The guide plate is disposed substantially at the center of the casing, and a gap through which air passes is provided between the guide plate and the peripheral plate of the casing. Further, a baffle plate that covers the inner periphery of the air outlet is provided below the guide plate. The guide plate guides the air sent into the casing by the fan toward the peripheral plate while sending it toward the air outlet through the gap. An opening is formed at a position corresponding to the center of the mouth shape of the air outlet, and the baffle plate rectifies the air flow toward the opening.

[0003] In recent years, there has been a demand for adjusting the air flow in an air-conditioned space.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

[0005] An object of the present disclosure is to provide a ventilation system capable of freely adjusting the air flow in an air-conditioned space.

[0006] A ventilation system according to one aspect of the present disclosure comprises a plurality of ventilation devices installed on the ceiling of an air-conditioned space. Each of the plurality of ventilation devices has a housing, a rectifier plate, and a drive mechanism. The housing is formed in the shape of a box having an internal space, and has an intake port for supplying air into the internal space, an outlet for blowing the supply air that has passed through the internal space out into the air-conditioned space as blown air, and a constriction portion that narrows the internal space toward the periphery of the outlet. The rectifier plate is positioned between the intake port and the outlet. The drive mechanism moves the rectifier plate. The blowing system further comprises a control device. The control device controls a plurality of drive mechanisms provided in each of the plurality of blowing devices. The control device has two control modes for controlling each of the plurality of drive mechanisms: a stirring mode and a spot mode. The stirring mode is a mode in which a vortex airflow is generated in the air-conditioned space by controlling each of the plurality of drive mechanisms so that the plurality of rectifier plates provided in each of the plurality of blowing devices are shifted to one side of the internal space. The spot mode is a mode in which the blown air is concentrated in a part of the air-conditioned space by controlling at least one of the plurality of drive mechanisms so that at least one of the plurality of rectifier plates is located in the center of the internal space. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a block diagram showing the configuration of the blower system according to the embodiment. [Figure 2] Figure 2 is a perspective view showing the arrangement of the blower and air conditioning equipment in the same blower system. [Figure 3] Figure 3 is a perspective view showing the arrangement of the blower and air conditioning equipment in the same blower system. [Figure 4] Figure 4 is a side view showing the blower and air conditioning equipment included in the same blower system. [Figure 5] Figure 5 is a perspective view showing the blower device included in the same blower system. [Figure 6] Figure 6 is a perspective view showing the blower device included in the same blower system. [Figure 7] Figure 7 is a plan view showing the rectifier plate of the blower described above. [Figure 8] Figure 8 is a partially broken side view showing the mounting structure of the rectifier plate mentioned above. [Figure 9] Figure 9A is a cross-sectional view showing the operation of the blower shown above. Figure 9B is a cross-sectional view showing another operation of the blower shown above. [Figure 10] Figure 10 is a perspective view illustrating the agitation mode of the same blower system. [Figure 11] Figure 11 is a perspective view showing the arrangement of the human presence sensors in the same ventilation system. [Figure 12] Figure 12 is a perspective view illustrating the spot mode of the same blower system. [Figure 13] Figure 13 is a block diagram showing the configuration of the first modified air blowing system. [Figure 14] Figure 14 is a block diagram showing the configuration of a second modified air blowing system. [Modes for carrying out the invention]

[0008] This embodiment generally relates to a ventilation system. More specifically, this disclosure relates to a ventilation system comprising a plurality of ventilation devices.

[0009] The embodiments described below are merely examples of embodiments of this disclosure. This disclosure is not limited to the embodiments described below, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0010] Furthermore, in the following explanation, unless otherwise specified, the X, Y, and Z axes in Figure 5 are defined as mutually orthogonal. For convenience, one of the two directions along the X axis is defined as the right direction, and the other as the left direction. Similarly, one of the two directions along the Y axis is defined as the forward direction, and the other as the backward direction. Finally, one of the two directions along the Z axis is defined as the upward direction, and the other as the downward direction. Note that the above directions do not limit the actual usage of the air blowing system, but are used to facilitate understanding of the air blowing system.

[0011] (Embodiment) (1) Outline of the ventilation system Figure 1 shows the block configuration of the ventilation system 1 of this embodiment. The ventilation system 1 can be used in facilities such as office buildings, offices, shops, factories, or commercial facilities. The ventilation system 1 may also be used in apartments in multi-unit dwellings, detached houses, etc.

[0012] The air supply system 1 includes a plurality (four in FIG. 1) of air supply devices 3. As shown in FIGS. 2 and 3, the plurality of air supply devices 3 are installed on the ceiling 91 of the air-conditioned space 9. As shown in FIG. 1, each of the plurality of air supply devices 3 has a housing 31, a rectifying plate 32, and a drive mechanism 33. The housing 31 is formed in a box shape having an internal space 310, and has an air intake 31g for sending supply air A11 (see FIG. 4) into the internal space 310, a blower outlet 31h for blowing the supply air A11 that has passed through the internal space 310 into the air-conditioned space 9 as blower air A1 (see FIG. 4), and a throttle portion 31i that narrows the internal space 310 toward the periphery of the blower outlet 31h. The rectifying plate 32 is disposed between the air intake 31g and the blower outlet 31h. The drive mechanism 33 moves the rectifying plate 32.

[0013] The above-described air supply device 3 can make the blown blower air A1 (see FIGS. 9A and 9B) a directional airflow by the rectifying plate 32 disposed between the air intake 31g and the blower outlet 31h. Further, the air supply device 3 can control the directivity of the blown blower air A1 by the rectifying plate 32 being moved by the drive mechanism 33. Therefore, the air supply system 1 including the plurality of air supply devices 3 can freely adjust the air flow in the air-conditioned space 9.

[0014] (2) Configuration of the air supply system As shown in FIGS. 1 to 3, the air supply system 1 includes an air conditioner 2, four air supply devices 3, a control device 4, a duct 5, a temperature detection unit 6, and a human detection unit 7.

[0015] As shown in FIGS. 2 and 3, the four air blowers 3 are installed on the ceiling 91 of the air conditioning space 9. The air conditioning space 9 is in the shape of a rectangular box. The four air blowers 3 are respectively installed at positions corresponding to the four vertices of the rectangle on the ceiling 91. That is, the four air blowers 3 are installed on the ceiling 91 so as not to be arranged on the same straight line. As shown in FIG. 4, the air blower 3 penetrates the ceiling 91 and is attached to the ceiling 91, and blows out the blown air A1 downward from the ceiling 91. When distinguishing the four air blowers 3, each of the four air blowers 3 is referred to as an air blower 3A, 3B, 3C, and 3D. In FIGS. 2 and 3, the air blowers 3A, 3B, 3C, and 3D are arranged in the order of 3A, 3B, 3C, and 3D counterclockwise when viewed from above.

[0016] As shown in FIGS. 2 and 3, the air conditioner 2 is installed on the ceiling 91 of the air conditioning space 9. The air conditioner 2 is installed at a location surrounded by the four air blowers 3 on the ceiling 91. In FIGS. 2 and 3, the air conditioner 2 is arranged biased toward the side closer to the air blowers 3C and 3D than the air blowers 3A and 3B. As shown in FIG. 4, the air conditioner 2 penetrates the ceiling 91 and is attached to the ceiling 91, sucks the air A2 in the air conditioning space 9, generates conditioned air with the temperature of the sucked air A2 adjusted as supply air A11, and sends out the supply air A11 to the duct 5.

[0017] As shown in FIG. 2, the duct 5 is arranged in the ceiling space 92 above the ceiling 91. The air conditioner 2 and the air blowers 3 are connected to each other via the duct 5. The duct 5 is cylindrical, and the supply air A11 flows through the duct 5. Each of the four air blowers 3 is connected to the duct 5, is supplied with the supply air A11 from the duct 5, and blows out the supply air A11 that has passed through the internal space 310 as the blown air A1 into the air conditioning space 9.

[0018] The control device 4 adjusts the air flow in the air conditioning space 9 by individually controlling the four air blowers 3. For example, the control device 4 controls the air blower 3 based on the detection results of the temperature detection unit 6 and the human detection unit 7.

[0019] (2.1) Blower As shown in Figures 4 to 8, the blower 3 comprises a housing 31, a rectifier plate 32, and a drive mechanism 33. The drive mechanism 33 is provided in the housing 31, and the rectifier plate 32 is movably supported by the drive mechanism 33.

[0020] (2.1.1) Enclosure The housing 31 is formed in the shape of a hollow rectangular box, mainly using galvanized steel sheet, and includes a left side (side) 31a, a right side (side) 31b, a front side (side) 31c, a rear side (side) 31d, an upper end (first end) 31e, and a lower end (second end) 31f. The housing 31 has an internal space 310 enclosed by the left side 31a, right side 31b, front side 31c, rear side 31d, upper end 31e, and lower end 31f. The left side 31a and the right side 31b face each other in the left-right direction along the X-axis. The front side 31c and the rear side 31d face each other in the front-rear direction along the Y-axis. The upper end 31e and the lower end 31f face each other in the up-down direction along the Z-axis.

[0021] A cylindrical air intake port 31g is provided in the center of the upper end surface 31e. The upper end of the air intake port 31g is connected to the duct 5, and the lower end of the air intake port 31g is spatially continuous with the internal space 310. The supply air A11 (see Figure 4) sent from the air conditioning unit 2 to the duct 5 is blown out from top to bottom into the internal space 310 of the housing 31 through the air intake port 31g.

[0022] A rectangular opening is formed on the lower end surface 31f as an air outlet 31h. The air outlet 31h is a rectangular plane along the XY plane (a plane defined by the X and Y axes), and the axial direction of this air outlet 31h is along the Z axis. A flange portion 31j, which constitutes a throttling portion 31i, is formed around the periphery of the air outlet 31h. The throttling portion 31i narrows the internal space 310 toward the periphery of the air outlet 31h by constricting the portion of the internal space 310 on the air outlet 31h side. Alternatively, the throttling portion 31i expands the internal space 310 from the periphery of the air outlet 31h toward the outside of the air outlet 31h. An example of a flange portion 31j, which is a throttling portion 31i, extends in a flange shape along the XY plane toward the air outlet 31h from the lower ends of the left surface 31a, right surface 31b, front surface 31c, and rear surface 31d. In other words, the lower end surface 31f has a throttling portion 31i and a flange portion 31j that extends from the periphery of the air outlet 31h to the left surface 31a, right surface 31b, front surface 31c, and rear surface 31d.

[0023] In this embodiment, it is preferable that the left side 31a, right side 31b, front 31c, rear 31d, and flange portion 31j of the housing 31 are made from a single sheet of galvanized steel. Alternatively, the left side 31a, right side 31b, front 31c, rear 31d, upper end surface 31e, and flange portion 31j of the housing 31 may be made from a single sheet of galvanized steel.

[0024] (2.1.2) Drive mechanism The drive mechanism 33 includes an electric actuator 33a and a support guide 33b.

[0025] The electric actuator 33a is mounted on the front side of the upper end surface 31e of the housing 31. The electric actuator 33a comprises an electric motor, a ball screw extending left and right along the X-axis, a screw nut fitted onto the ball screw, and a rod attached to the screw nut. The rotational force of the electric motor is transmitted to the ball screw, which rotates around its axis of rotation. When the ball screw rotates in one direction, the screw nut moves to the left along the X-axis, and when the ball screw rotates in the other direction, it moves to the right along the X-axis. A rod is attached to the screw nut, and the rod also moves along the X-axis in accordance with the rotation of the ball screw, similar to the screw nut.

[0026] An opening is formed in the upper end surface 31e of the housing 31, extending along the X-axis opposite the electric actuator 33a. The upper ends of two rod-shaped supports, the first support and the second support, are connected to the rod of the electric actuator 33a. The lower ends of the first support and the second support are inserted into the internal space 310 through the opening in the upper end surface 31e and attached to the rectifier plate 32. For example, in Figure 8, an opening 31k is formed in the upper end surface 31e of the housing 31 along the X-axis. The first support 33c is inserted through the opening 31k, the upper end of the first support 33c is connected to the rod of the electric actuator 33a, and the lower end of the first support 33c is attached to the rectifier plate 32. A second support, not shown, is also attached to the rectifier plate 32 in the same way as the first support 33c.

[0027] The support guide 33b is attached to the rear side of the upper end surface 31e of the housing 31. The support guide 33b comprises a straight rail and a slider attached to the rail. The rail is mounted to extend horizontally along the X-axis. The slider moves linearly horizontally along the rail. That is, the direction of extension of the rail is the same as the displacement direction of the electric actuator 33a. An opening is formed in the upper end surface 31e of the housing 31 that extends along the X-axis opposite to the support guide 33b. The upper end of a third support, which is a single rod-shaped support, is connected to the slider of the support guide 33b. The lower end of the third support is inserted into the internal space 310 through the opening in the upper end surface 31e and attached to the rectifier plate 32. A third support, not shown, is also attached to the rectifier plate 32, similar to the first support 33c (see Figure 8).

[0028] (2.1.3) Current plate The rectifier plate 32 is formed in a rectangular plate shape by resin molding using polypropylene as the material.

[0029] As shown in Figure 7, the rectifier plate 32 has a first surface 32a and a second surface 32b facing each other in the thickness direction, and is arranged in the internal space 310 such that the first surface 32a faces the upper end surface 31e and the second surface 32b faces the lower end surface 31f. Two circular through holes 32c and 32d are formed side by side in the left-right direction on the front side of the rectifier plate 32. One circular through hole 32e is formed in the middle in the left-right direction on the rear side of the rectifier plate 32.

[0030] The lower end of the first support body 33c of the electric actuator 33a abuts against the first surface 32a of the rectifier plate 32 so as to face the insertion hole 32c. The lower end of the second support body of the electric actuator 33a abuts against the first surface 32a of the rectifier plate 32 so as to face the insertion hole 32d. The lower end of the third support body of the support guide 33b abuts against the first surface 32a of the rectifier plate 32 so as to face the insertion hole 32e. Screw holes are formed along the Z-axis at the lower ends of each of the first to third support bodies, and three screws 35 (see Figure 6) are inserted through the insertion holes 32c to 32e from below the rectifier plate 32 (on the side of the second surface 32b) and screwed into the respective screw holes of the first to third support bodies. As a result, the heads 35a of the screws 35 engage with the second surface 32b, and the rectifier plate 32 is fixed to the first to third supports by being sandwiched between the heads 35a of the three screws 35 and the lower ends of the first to third supports.

[0031] For example, in Figure 8, the first support 33c is inserted through the opening 31k, and the upper end of the first support 33c is connected to the rod of the electric actuator 33a. The lower end of the first support 33c is in contact with the first surface 32a of the rectifier plate 32, facing the insertion hole 32c. Then, the screw 35 is inserted through the insertion hole 32c from below the rectifier plate 32 (on the side of the second surface 32b) and screwed into the screw hole of the first support 33c. As a result, the rectifier plate 32 is sandwiched between the head 35a of the screw 35 and the lower end of the first support 33c.

[0032] Furthermore, the lower end of the second support abuts against the first surface 32a of the rectifier plate 32 so as to face the insertion hole 32d, and the lower end of the third support abuts against the first surface 32a of the rectifier plate 32 so as to face the insertion hole 32e, and screws 35 are screwed into the screw holes of the second support and the third support respectively (see Figure 6).

[0033] Therefore, when the rod of the electric actuator 33a moves along the X-axis, the rectifier plate 32 also slides along the X-axis. That is, the rectifier plate 32 is slid by the drive mechanism 33 in a direction intersecting the Z-axis, which is normal to the air outlet 31h.

[0034] (2.1.4) Installation of a blower As shown in Figure 4, the blower 3 is embedded in the mounting hole 91a of the ceiling 91. The left side 31a and the right side 31b of the housing 31 are each fitted with two mounting brackets 34 aligned along the Y axis, as shown in Figures 5 and 6. The front side 31c and the rear side 31d are each fitted with two mounting brackets 34 aligned along the X axis, as shown in Figures 5 and 6. The mounting brackets 34 are formed in an L shape from a metal such as aluminum or stainless steel and are fixed to the back surface (top surface) of the ceiling 91 in the space above the ceiling 92 with screws.

[0035] (2.1.5) Directionality of the blown air As described above, supply air A11 is supplied from the duct 5 to the internal space 310 of the housing 31 of the blower 3. The supply air A11 that has passed through the internal space 310 is blown out downward as blown air A1 from the air outlet 31h of the blower 3. The drive mechanism 33 adjusts the directionality of the blown air A1 blown out from the air outlet 31h by changing the sliding position of the rectifier plate 32.

[0036] The directivity of the blown air A1 will be explained below using Figures 9A and 9B. Note that the drive mechanism 33, mounting bracket 34, and screw 35 of the blower 3 are omitted in Figures 9A and 9B.

[0037] In Figure 9A, the sliding position of the rectifier plate 32 is controlled to the center of the internal space 310. A gap forming a communication section 311 is created between the left end 32f of the rectifier plate 32 and the left surface 31a of the housing 31. Similarly, a gap forming a communication section 312 is created between the right end 32g of the rectifier plate 32 and the right surface 31b of the housing 31. The width dimensions of the communication sections 311 and 312 along the X axis are the same. That is, gaps are formed on both the left and right sides of the rectifier plate 32 that connect the space on the first surface 32a side (the upper space of the housing 31) and the space on the second surface 32b side (the lower space of the housing 31). In this case, the supply air A11 supplied from the intake port 31g on the upper end surface 31e to the internal space 310 from top to bottom is divided into an airflow F1 that goes to the left and an airflow F2 that goes to the right along the first surface 32a of the rectifier plate 32. Airflow F1 passes through the communication section 311 from top to bottom, then moves to the right between the second surface 32b and the flange 31j of the rectifier plate 32. Airflow F2 passes through the communication section 312 from top to bottom, then moves to the left between the second surface 32b and the flange 31j of the rectifier plate 32. After airflows F1 and F2 collide with each other, they become the blown air A1 that is blown downward from the air outlet 31h. In other words, the blown air A1 is blown directly below the air outlet 31h. To put it another way, the directivity of the blown air A1 is generated in the downward direction.

[0038] In Figure 9B, the sliding position of the rectifier plate 32 is controlled to be shifted to the right side of the internal space 310. A gap forming a communication section 313 is created between the left end 32f of the rectifier plate 32 and the left surface 31a of the housing 31. The right end 32g of the rectifier plate 32 is in contact with the right surface 31b of the housing 31. That is, on the left side of the rectifier plate 32, a gap is formed that connects the space on the first surface 32a side (the upper space of the housing 31) and the space on the second surface 32b side (the lower space of the housing 31), but on the right side of the rectifier plate 32, no gap is formed that connects the space on the first surface 32a side and the space on the second surface 32b side. In this case, the supply air A11 supplied from top to bottom into the internal space 310 from the intake port 31g on the upper end surface 31e becomes an airflow F3 that flows to the left along the first surface 32a of the rectifier plate 32. The airflow F3 passes through the communication section 313 from top to bottom, then moves to the right between the second surface 32b of the rectifier plate 32 and the flange section 31j. The airflow F3 becomes the blown air A1 that is blown out from the air outlet 31h in a diagonal direction to the lower right. In other words, the directionality of the blown air A1 is generated in a diagonal direction to the lower right.

[0039] Furthermore, when the sliding position of the rectifier plate 32 is controlled to be biased towards the left side of the internal space 310, the blown air A1 is blown out from the air outlet 31h in a diagonal direction to the lower left, and the directionality of the blown air A1 is generated in a diagonal direction to the lower left.

[0040] In this way, the drive mechanism 33 slides the rectifier plate 32 so as to change the width dimensions of the communication sections (311, 313), which are gaps formed between the left side surface 31a of the housing 31 and the left end 32f of the rectifier plate 32, and the communication section (312), which is a gap formed between the right side surface 31b of the housing 31 and the right end 32g of the rectifier plate 32. The blower 3 can then control the directionality of the blown air A1 blown out from the air outlet 31h by changing the sliding position of the rectifier plate 32. Furthermore, by employing a simple configuration of sliding the rectifier plate 32, the blower 3 can easily control the directionality of the blown air A1.

[0041] Furthermore, by providing a flange 31j around the periphery of the air outlet 31h, the blower 3 can create a directional airflow of the blown air A1 from the air outlet 31h compared to a blower without the flange 31j. In other words, the flange 31j has the function of increasing the directivity of the blown air A1 blown from the air outlet 31h, and the blower 3 can concentrate the blown air A1 blown from the air outlet 31h into a narrow area. To put it another way, the blown air A1 reaches only the targeted area, and its diffusion to the surroundings is reduced.

[0042] (2.2) Air conditioning equipment, ducts As shown in Figures 2 and 3, the air conditioning unit 2 is installed in the ceiling 91, surrounded by four blowers 3. As shown in Figure 4, the air conditioning unit 2 is mounted on the ceiling 91, penetrating it. The air conditioning unit 2 draws in air A2 from the air-conditioned space 9, generates conditioned air by adjusting the temperature of the drawn-in air A2, and sends the conditioned air as supply air A11 to the duct 5. The supply air A11 sent to the duct 5 is supplied to the blowers 3, which blow out blown air A1 into the air-conditioned space 9. That is, the supply air A11 is sent into the internal space 310 from the intake port 31g of the blowers 3 and blown out as blown air A1 from the outlet port 31h of the blowers 3. Thus, the air conditioning unit 2 has the function of cooling or heating the air-conditioned space 9.

[0043] Therefore, the ventilation system 1 can control the air conditioning environment of the air-conditioned space 9 by blowing temperature-adjusted supply air A11 into the air-conditioned space 9 as blown air A1. In addition, by connecting the ventilation device 3 to the duct 5, supply air A11 can be easily supplied to the ventilation device 3.

[0044] The air conditioning unit 2 and each of the four blowers 3 are connected by multiple independent ducts 5. The air conditioning unit 2 can adjust the amount of supply air A11 supplied to each of the four blowers 3 individually. For example, it can supply supply air A11 to only one of the four blowers 3, or it can supply different amounts of supply air A11 to each of the four blowers 3.

[0045] Furthermore, the air conditioning unit 2 may generate conditioned air as supplied air A11 in which not only temperature but also humidity, cleanliness, fragrance, and at least one of the virus levels are adjusted.

[0046] (2.3) Temperature detection unit The temperature detection unit 6 detects the temperature distribution of the air-conditioned space 9. Specifically, the temperature detection unit 6 is equipped with multiple temperature sensors 61 (see Figure 3) installed at multiple locations within the air-conditioned space 9. The multiple temperature sensors 61 are distributed and located in both the upper and lower parts of the air-conditioned space 9. The temperature detection unit 6 then generates temperature distribution data, which includes measurement data of the temperatures measured by the multiple temperature sensors 61. The temperature distribution data corresponds to the detection result of the temperature distribution of the air-conditioned space 9. The temperature detection unit 6 outputs the temperature distribution data of the air-conditioned space 9 to the control device 4.

[0047] (2.4) Human detection unit The human detection unit 7 detects people present in the air-conditioned space 9. Specifically, the human detection unit 7 comprises multiple human presence sensors 71 (see Figure 3) installed within the air-conditioned space 9. The multiple human presence sensors 71 detect the presence or absence of people in different detection areas within the air-conditioned space 9. The human detection unit 7 generates human detection data that includes the detection results of each of the multiple human presence sensors 71. The human detection data corresponds to the human detection results in the air-conditioned space 9. The human detection unit 7 outputs the human detection data of the air-conditioned space 9 to the control device 4.

[0048] The human presence sensor 71 is composed of at least one of the following: a pyroelectric sensor, a radio wave sensor, an ultrasonic sensor, and a camera.

[0049] (2.5) Control device The control device 4 preferably includes a computer system. That is, in the control device 4, some or all of the functions of the control device 4 are realized by a processor, such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit), reading and executing a program stored in memory. The control device 4 primarily includes a processor that operates according to the program as its hardware configuration. The type of processor is not limited as long as it can realize its functions by executing a program. The processor consists of one or more electronic circuits, including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). Here, we refer to them as ICs and LSIs, but the name changes depending on the degree of integration; they may also be called system LSIs, VLSIs (Very Large Scale Integrations), or ULSIs (Ultra Large Scale Integrations). Field-programmable gate arrays (FPGAs), which are programmed after the LSI is manufactured, or reconfigurable logic devices that allow for the reconfiguration of internal junction relationships or the setup of internal circuit compartments, can also be used for the same purpose. Multiple electronic circuits may be integrated on a single chip or provided on multiple chips. Multiple chips may be arranged in a cluster or distributed.

[0050] The control device 4 may be implemented as a single computer or as multiple computer devices working in conjunction with each other. Furthermore, the control device 4 may be built as a cloud computing system.

[0051] The control device 4 controls the drive mechanism 33 of the blower 3 by performing wired or wireless communication with the blower 3. Wired communication is, for example, wired communication via twisted pair cable, dedicated communication line, or LAN (Local Area Network) cable. Wireless communication is, for example, wireless communication conforming to standards such as Wi-Fi (registered trademark) or unlicensed low-power radio (specified low-power radio).

[0052] Specifically, the control device 4 individually controls the drive mechanisms 33 of the four blowers 3 based on the detection results of the temperature detection unit 6 and the human detection unit 7. More specifically, the control device 4 adjusts the sliding position of the rectifier plate 32 by controlling the position of the rod of the electric actuator 33a of the drive mechanism 33 of the blower 3. In other words, the control device 4 controls the position of the rectifier plate 32 by controlling the position of the electric actuator 33a. If the position of the rectifier plate 32 along the X axis is defined as the sliding position, the sliding position of the rectifier plate 32 is adjusted by the control device 4 controlling the position of the electric actuator 33a.

[0053] The control device 4 can switch between control modes for each of the four blower units 3's drive mechanisms 33 (multiple drive mechanisms 33). The control device 4 has two control modes: a stirring mode and a spot mode. The stirring mode is a control mode that generates a vortex airflow B1 (see Figure 10) in the air-conditioned space 9. The spot mode is a control mode that concentrates the blown air A1 in a part of the air-conditioned space 9. In other words, the control device 4 can be set to either the stirring mode or the spot mode as the control mode.

[0054] Furthermore, the control device 4 controls the air conditioning unit 2 by communicating with it via wired or wireless communication. In other words, the control device 4 can control the amount of supplied air A11 to each of the four blowers 3.

[0055] The control device 4 then adjusts the air conditioning environment of the air-conditioned space 9 by controlling the air conditioning unit 2 and the blower unit 3.

[0056] The following describes the stirring mode and spot mode. Note that the control mode can be switched manually by a person or automatically based on schedule information.

[0057] (2.5.1) Stirring mode The control device 4 determines, based on the temperature distribution data, whether or not there is a bias (temperature unevenness) in the temperature distribution of the air-conditioned space 9. For example, the control device 4 determines that there is temperature unevenness in the air-conditioned space 9 if the difference between the highest and lowest temperatures in the air-conditioned space 9 is greater than or equal to a certain value. Alternatively, the control device 4 determines that there is temperature unevenness in the air-conditioned space 9 if the standard deviation or variance of multiple temperatures measured by multiple temperature sensors 61 exceeds a predetermined threshold.

[0058] Then, when the control device 4 determines that temperature unevenness has occurred in the air-conditioned space 9 while the control mode is in stirring mode, it controls the air conditioning unit 2 to supply supply air A11 to each of the four blowers 3. Furthermore, the control device 4 controls each drive mechanism 33 so that the sliding position of each rectifier plate 32 of the four blowers 3 is biased in the same direction (left or right in Figure 9B) in the left-right direction of each housing 31 (see Figure 9B).

[0059] Specifically, each of the four rectifier plates 32 of the four blowers 3 generates a communication section 313 on the side opposite to the side of the two adjacent blowers 3 that are adjacent to each other in a counter-clockwise direction when viewed from above. That is, the rectifier plate 32 slides toward the side of the adjacent blower 3 when viewed from above in a counter-clockwise direction, and generates a communication section 313 on the opposite side of the sliding direction. As a result, the directionality of the blown air A1 from each of the four blowers 3 is generated toward the side of the adjacent blower 3 when viewed from above in a counter-clockwise direction, as shown in Figure 10. As a result, a counter-clockwise vortex flow B1 is generated in the air-conditioned space 9, the air in the air-conditioned space 9 is stirred by the vortex flow B1, and temperature unevenness in the air-conditioned space 9 is suppressed.

[0060] Furthermore, each of the four blowers 3's rectifier plates 32 may generate a communication section 313 on the side opposite to the side of the two adjacent blowers 3 that are adjacent to each other in a clockwise direction when viewed from above. That is, the rectifier plate 32 slides toward the side of the adjacent blower 3 when viewed from above in a clockwise direction, and generates a communication section 313 on the opposite side of the sliding direction. As a result, the directionality of the air A1 blown out by each of the four blowers 3 is generated toward the side of the adjacent blower 3 when viewed from above in a clockwise direction. Consequently, a clockwise vortex airflow is generated in the air-conditioned space 9.

[0061] Here, the four blowers 3 are installed on the ceiling 91 at locations corresponding to the four vertices of a rectangle. In other words, the four blowers 3 are installed on the ceiling 91 so as not to be aligned on the same straight line. As a result, the ventilation system 1 makes it easier to generate vortex airflow B1 in the air-conditioned space 9 using the four blowers 3.

[0062] Furthermore, the directionality of the air A1 blown out by each of the four blowers 3 may be generated towards the adjacent blower 3 in a clockwise direction when viewed from above. In this case, a clockwise vortex airflow will be generated in the air-conditioned space 9.

[0063] In this way, the air blowing system 1 suppresses temperature unevenness in the air-conditioned space 9 in the stirring mode, thereby making the air-conditioned environment of the air-conditioned space 9 comfortable.

[0064] (2.5.2) Spot Mode When the control mode is set to spot mode, the control device 4 determines an area in the air-conditioned space 9 where the blown air A1 will be concentrated, based on the detection result of the human detection unit 7.

[0065] In this embodiment, as shown in Figure 11, four motion sensors 71 are installed in the air-conditioned space 9. Each of the four motion sensors 71 designates a portion of the air-conditioned space 9 as a detection area R1-R4. Each of the detection areas R1-R4 is an area where the corresponding motion sensor 71 can detect a person. Detection area R1 is set below the blower 3A. Detection area R2 is set below the blower 3B. Detection area R3 is set below the blower 3C. Detection area R4 is set below the blower 3D. That is, detection area R1 corresponds to the blower 3A, detection area R2 corresponds to the blower 3B, detection area R3 corresponds to the blower 3C, and detection area R4 corresponds to the blower 3D.

[0066] The control device 4 determines whether or not a person is present in each of the detection areas R1-R4 based on the person detection data received from the person detection unit 7.

[0067] When the control mode is in spot mode, if the control device 4 determines that a person is present in any of the detection areas R1-R4, it controls the air conditioning system 2 to supply supply air A11 to the blower 3 corresponding to the detection area where a person is present, and to refrain from supplying supply air A11 to the blower 3 corresponding to the detection area where no person is present. Furthermore, the control device 4 controls the drive mechanism 33 so that the sliding position of the rectifier plate 32 of the blower 3 corresponding to the detection area where a person is present is located in the center of the internal space 310 (see Figure 9A). In other words, the blower 3 above the detection area blows out the supply air A1 directly below the air outlet 31h.

[0068] For example, in Figure 12, of the detection areas R1-R4, people H1 and H2 are present in detection area R2, and person H3 is present in detection area R3. In this case, the control device 4 concentrates the supplied air A1 in detection areas R2 and R3. Specifically, the control device 4 supplies supply air A11 to the blowers 3B and 3C corresponding to detection areas R2 and R3, and controls the air conditioning system 2 so that it does not supply supply air A11 to the blowers 3A and 3D corresponding to detection areas R1 and R4. Furthermore, the control device 4 controls each drive mechanism 33 so that the sliding position of each rectifier plate 32 of the blowers 3B and 3C corresponding to detection areas R2 and R3 is located in the center of the internal space 310. As a result, blower 3B blows out the supplied air A1 directly below the air outlet 31h of blower 3B, adjusting the air conditioning environment of detection area R2 where people H1 and H2 are present. Furthermore, the blower 3C blows out air A1 directly below the air outlet 31h of the blower 3C, adjusting the air conditioning environment of the detection area R3 where a person H3 is present.

[0069] Thus, in spot mode, the ventilation system 1 blows air A1 only into the detection area where a person is present among the detection areas R1-R4, thereby saving energy.

[0070] Furthermore, the blower 3 can concentrate the blown air A1 onto a narrow area where one (or a small number of) people are present by controlling its directionality as a directional airflow. In other words, when performing air conditioning control in spot mode, it becomes possible to narrow each detection area and adjust the air quality for each narrow detection area. It also becomes possible for the blower 3 to change the direction in which it blows out the blown air A1. As a result, in spot mode, the blower system 1 can provide a comfortable air conditioning environment for each person, even when people are moving within the air-conditioned space 9 or when multiple people are present in the air-conditioned space 9.

[0071] (3) First modified example Figure 13 shows the configuration of the first modified air blower system 1A. The air blower system 1A further includes an operating unit 8. Components similar to those in the air blower system 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0072] The control unit 8 is a user interface device that accepts user input. For example, the control unit 8 includes at least one of a switch, touch panel, keyboard, and mouse that accepts user input by hand, and a microphone that accepts user input by voice.

[0073] The user selects a control mode for the control device 4 by operating the control unit 8. The control unit 8 outputs an operation signal to the control device 4 that includes information about the selected control mode. The control device 4 operates in the control mode based on the operation signal and controls the drive mechanisms 33 of each of the multiple blowers 3. For example, if the user selects the stirring mode by operating the control unit 8, the control device 4 sets the control mode to stirring mode and controls the drive mechanisms 33 of each of the multiple blowers 3 in stirring mode. Also, if the user selects the spot mode by operating the control unit 8, the control device 4 sets the control mode to spot mode and controls the drive mechanisms 33 of each of the multiple blowers 3.

[0074] (4) Second variation Figure 14 shows the configuration of the second modified blower system 1B. The blower device 3 of blower system 1B further includes a discharge device 36. Components similar to those in blower system 1 are denoted by the same reference numerals and their descriptions are omitted.

[0075] The discharge device 36 is positioned on the inner surface of the air intake port 31g. The discharge device 36 adds an active ingredient to the supply air A11 supplied from the air intake port 31g to the internal space 310. As a result, the air A1 containing the active ingredient is blown downward from the air outlet 31h and supplied to the air-conditioned space 9.

[0076] Specifically, the discharge device 36 has a pair of electrodes, and water is held in one of the electrodes. The discharge device 36 then applies a voltage between the pair of electrodes, causing a discharge between them, thereby generating radicals as an active ingredient and electrostatically atomizing the water held in the electrodes. Thus, the discharge device 36 generates nanometer-sized charged fine water droplets containing radicals in the electrostatically atomized water. Radicals are the basis for various useful effects, not only in sterilization, deodorization, moisturizing, preservation, and virus inactivation.

[0077] Alternatively, the discharge device 36 may generate a discharge between the pair of electrodes without retaining water on the electrodes. In this case, the discharge device 36 generates air ions as an active ingredient through the discharge generated between the pair of electrodes.

[0078] The discharge device 36 may also be placed in the internal space 310.

[0079] (5) Third variation The throttling portion 31i of the blower 3 only needs to be configured to narrow the internal space 310 toward the periphery of the air outlet 31h by narrowing the portion of the internal space 310 toward the periphery of the air outlet 31h. For example, the throttling portion 31i may have a shape that gradually widens the internal space 310 as it moves upward from the periphery of the air outlet 31h.

[0080] Furthermore, although the rectifier plate 32 of the blower 3 is a single plate member, multiple plate members may be used as the rectifier plate instead of 32.

[0081] Furthermore, the sliding direction of the rectifier plate 32 is not limited to the left-right direction along the X-axis. That is, the sliding direction of the rectifier plate 32 may be along a virtual line segment on the XY plane, for example, the front-back direction along the Y-axis.

[0082] Furthermore, the sliding direction of the rectifier plate 32 is not limited to one direction. That is, the rectifier plate 32 may slide independently in directions along two or more virtual line segments on the XY plane, for example, in the left-right direction along the X axis and in the front-back direction along the Y axis.

[0083] Furthermore, the sliding direction of the rectifier plate 32 is not limited to a direction perpendicular to the Z-axis, but can be any direction intersecting the Z-axis.

[0084] Furthermore, the drive mechanism 33 of the blower 3 may use other actuators such as a pneumatic actuator or a hydraulic actuator instead of the electric actuator 33a.

[0085] Furthermore, the structure to which the air conditioning unit 2 and the blower unit 3 are attached is not limited to the ceiling 91, but may be other structures such as a frame provided above the air-conditioned space 9.

[0086] Furthermore, the number of blowers 3 only needs to be two or more. With two or more blowers 3, the air conditioning environment of the air-conditioned space 9 can be controlled in various control modes. For example, even with only two blowers 3, if two blowers 3 arranged side by side in the first direction blow air A1 in opposite directions in a second direction perpendicular or intersecting the first direction, a localized vortex flow can be generated in the air-conditioned space 9. In other words, a vortex flow in stirring mode can be generated while keeping the number of blowers 3 low. In the above embodiment, stirring mode and spot mode are given as examples of control modes, but other control modes such as individual mode, in which two or more blowers are controlled independently and individually, may also be adopted.

[0087] Furthermore, if there are three or more blowers 3, it is preferable that the three or more blowers 3 are installed on the ceiling 91 so that they are not aligned on the same straight line. For example, three blowers 3 are installed on the ceiling 91 at locations corresponding to the three vertices of a triangle. Similarly, five blowers 3 are installed on the ceiling 91 at locations corresponding to the five vertices of a pentagon. As a result, it becomes easier to generate vortex airflow B1 in the air-conditioned space 9.

[0088] (6) Summary The first embodiment of the ventilation system (1, 1A, 1B) according to the above-described embodiment comprises a plurality of ventilation devices (3) installed on the ceiling (91) of the air-conditioned space (9). Each of the plurality of ventilation devices (3) has a housing (31), a rectifier plate (32), and a drive mechanism (33). The housing (31) is formed in the shape of a box having an internal space (310), and has an intake port (31g) for sending supply air (A11) into the internal space (310), an outlet port (31h) for blowing the supply air (A11) that has passed through the internal space (310) out into the air-conditioned space (9) as blown air (A1), and a throttling portion (31i) that narrows the internal space (310) toward the periphery of the outlet port (31h). The rectifier plate (32) is positioned between the intake port (31g) and the outlet port (31h). The drive mechanism (33) moves the rectifier plate (32).

[0089] The aforementioned ventilation systems (1, 1A, 1B) can freely adjust the airflow within the air-conditioned space (9).

[0090] In the second embodiment of the above-described embodiment, the air supply system (1, 1A, 1B) preferably further comprises an air conditioning device (2) that, in the first embodiment, draws in air (A2) from the air-conditioned space (9) and generates conditioned air (A11) as supplied air (A11) by adjusting the temperature of the drawn-in air (A2).

[0091] The aforementioned ventilation systems (1, 1A, 1B) can control the air conditioning environment of the air-conditioned space (9) by blowing out temperature-controlled conditioned air as ventilated air (A1).

[0092] In the third embodiment of the blower system (1, 1A, 1B) according to the above-described embodiment, in the first or second embodiment, it is preferable that the plurality of blowers (3) consist of two or more blowers (3).

[0093] The aforementioned ventilation systems (1, 1A, 1B) can control the air conditioning environment of the air-conditioned space (9) using various control modes.

[0094] In the fourth embodiment of the blower system (1, 1A, 1B) according to the above-described embodiment, in the first or second embodiment, it is preferable that the plurality of blowers (3) consist of three or more blowers (3).

[0095] The aforementioned ventilation systems (1, 1A, 1B) can control the air conditioning environment of the air-conditioned space (9) using various control modes.

[0096] In the fifth embodiment of the ventilation system (1, 1A, 1B) according to the above-described embodiment, in the fourth embodiment, it is preferable that the three or more ventilation devices (3) are installed on the ceiling (91) so as not to be aligned in the same straight line.

[0097] The aforementioned ventilation systems (1, 1A, 1B) facilitate the generation of vortex airflow (B1) in the air-conditioned space (9).

[0098] The sixth embodiment of the blower system (1, 1A, 1B) according to the above-described embodiment preferably further comprises a control device (4) that controls each of the drive mechanisms (33) of the plurality of blowers (3) in any one of the first to fifth embodiments. The control device (4) controls each of the plurality of drive mechanisms (33) to generate a vortex airflow (B1) in the air-conditioned space (9).

[0099] The aforementioned air supply systems (1, 1A, 1B) can suppress temperature unevenness in the air-conditioned space (9) by creating a vortex airflow (B1).

[0100] In the sixth embodiment, the seventh embodiment of the blower system (1, 1A, 1B) according to the above-described embodiment preferably further comprises a temperature detection unit (6) for detecting the temperature distribution of the air-conditioned space (9). The control device (4) controls each of the multiple drive mechanisms (33) based on the detection result of the temperature detection unit (6).

[0101] The aforementioned air supply systems (1, 1A, 1B) can generate a vortex airflow (B1) when there is an uneven temperature distribution (temperature variation) in the air-conditioned space (9).

[0102] In the eighth embodiment of the above-described embodiment, the blower system (1A) preferably further comprises an operating unit (8) that outputs an operating signal in response to human operation, in the sixth or seventh embodiment. The control device (4) controls each of the multiple drive mechanisms (33) based on the operating signal.

[0103] The aforementioned blowing system (1A) can generate a vortex airflow (B1) at any time by manual operation by a person.

[0104] In the ninth embodiment of the blower system (1, 1A, 1B) according to the above-described embodiment, in any one of the sixth to eighth embodiments, the control device (4) preferably has a stirring mode and a spot mode as control modes for controlling each of the multiple drive mechanisms (33). The stirring mode is a control mode that generates a vortex airflow (B1) in the air-conditioned space (9). The spot mode is a control mode that concentrates the blown air in a part of the air-conditioned space (9).

[0105] The aforementioned air blowing systems (1, 1A, 1B) can suppress temperature unevenness in the air-conditioned space (9) in stirring mode and save energy in spot mode.

[0106] In the 10th embodiment of the above-described embodiment, the ventilation system (1, 1A, 1B) preferably further comprises a person detection unit (7) for detecting people present in the air-conditioned space (9). When the control mode is set to spot mode, the control device (4) determines an area in the air-conditioned space (9) where the blown air (A1) is concentrated based on the detection result of the person detection unit (7).

[0107] The aforementioned ventilation systems (1, 1A, 1B) can provide a comfortable air conditioning environment for each individual.

[0108] In the 11th embodiment of the blowing system (1, 1A, 1B) according to the above-described embodiment, in any one of the first to tenth embodiments, the intake port (31g) is preferably connected to the duct (5) through which the supply air (A11) flows.

[0109] The aforementioned ventilation systems (1, 1A, 1B) can easily supply conditioned air to the ventilation device (3).

[0110] In the 12th embodiment of the blower system (1B) according to the above-described embodiment, it is preferable that in any one of the first to 11th embodiments, each of the plurality of blowers (3) further comprises a discharge device (36) that generates an active ingredient by discharge. The blown air (A1) blown out from the air outlet (31h) contains the active ingredient.

[0111] The aforementioned air blowing system (1B) can provide useful effects such as deodorization, moisturizing, freshness preservation, and virus inactivation. [Explanation of Symbols]

[0112] 1, 1A, 1B ventilation system 2 Air conditioner 3. Blower 31 cabinets 310 Interior space 31g air intake 31h Air vent 31i Aperture section 32 Rectifier plate 33 Drive mechanism 36 Discharge device 4. Control device 5 ducts 6. Temperature detection unit 7 Person Detection Unit 8 Control section 9. Air-conditioned space 91 Ceiling A1 Blowing air A11 Supply air A2 Air B1 Vortex airflow

Claims

1. Equipped with multiple ventilation devices installed on the ceiling of the air-conditioned space, Each of the aforementioned plurality of blowers is A housing formed in the shape of a box having an internal space, having an air intake for supplying air into the internal space, an air outlet for blowing the supply air that has passed through the internal space into the air-conditioned space as blown air, and a constricted portion that narrows the internal space toward the periphery of the air outlet, A rectifier plate is positioned between the air intake port and the air outlet port, It has a drive mechanism for moving the rectifier plate, The system further comprises a control device for controlling the multiple drive mechanisms provided in each of the multiple blowers, The control device has control modes for controlling each of the plurality of drive mechanisms, By controlling the multiple drive mechanisms so that the multiple rectifier plates provided in each of the multiple blowers are shifted to one side of the internal space, a stirring mode is provided that generates a vortex airflow in the air-conditioned space. The system includes a spot mode in which the blown air is concentrated in a part of the air-conditioned space by controlling at least one of the multiple drive mechanisms so that at least one of the multiple rectifier plates is located in the center of the internal space. Ventilation system.

2. The air conditioning system further comprises an air conditioning device that draws in air from the air-conditioned space and generates conditioned air as the supply air by adjusting the temperature of the drawn-in air. The ventilation system according to claim 1.

3. The aforementioned multiple blowers are two or more blowers. A blower system according to claim 1 or 2.

4. The aforementioned multiple blowers are three or more blowers. A blower system according to claim 1 or 2.

5. The three or more blowers are installed on the ceiling so as not to be aligned in the same straight line. The ventilation system according to claim 4.

6. The air-conditioned space further comprises a temperature detection unit for detecting the temperature distribution, The control device controls each of the multiple drive mechanisms based on the detection result of the temperature detection unit. The ventilation system according to claim 1.

7. Further comprising an operating unit that outputs an operating signal corresponding to human operation, The control device controls each of the plurality of drive mechanisms based on the operation signal. The ventilation system according to claim 1.

8. Further comprising a person detection unit for detecting a person present in the air-conditioned space, When the control mode is set to the spot mode, the control device determines an area in the air-conditioned space where the blown air will be concentrated, based on the detection result of the human detection unit. The ventilation system according to claim 1.

9. The air intake port is connected to the duct through which the supply air flows. The ventilation system according to claim 1.

10. Each of the plurality of blowers further comprises a discharge device that generates an active ingredient by discharge, The air blown out from the air outlet contains the active ingredient. The ventilation system according to claim 1.

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