Blower and Blower System

Abstract

To provide an air blowing device that can improve air blowing efficiency by reducing pressure loss of air in a housing, and an air blowing system.SOLUTION: An air blowing device 3 comprises a housing 31 and a straightening plate 32. The housing 31 is formed in a box shape comprising an internal space 310, and comprises an air supply port 31c for supplying air into the internal space 310, and an air blowing port 31d for discharging air to the outside of the internal space 310. The straightening plate 32 is arranged between the air supply port 31c and the air blowing port 31d. The internal space 310 comprises an expanding space 313 expanding as approaching the straightening plate 32 from the air supply port 31c.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a blower device and a blower system. [Background technology]

[0002] The air purifying device 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 at approximately the center of the casing, and a gap is provided between the guide plate and the peripheral plate of the casing to allow air to pass through. Furthermore, a baffle plate that covers the inner periphery of the air outlet is provided below the guide plate. The guide plate guides 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 straightens the air flow toward the opening. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-112755 A Summary of the Invention [Problem to be solved by the invention]

[0004] An air conditioner such as the air purifier of Patent Document 1 sends air into a housing (casing) from an air supply port (air inlet) and expels the air from an air outlet (air outlet). At this time, it is required to reduce the air pressure loss in the housing and improve the air blowing efficiency.

[0005] An object of the present disclosure is to provide a blower device and a blower system that can reduce air pressure loss within a housing and improve blowing efficiency. [Means for solving the problem]

[0006] A blower according to an embodiment of the present disclosure includes a housing and a straightening vane. The housing is formed in a box shape having an internal space, and includes an air inlet for feeding air into the internal space, and an air outlet for discharging the air to the outside of the internal space. The straightening vane is disposed between the air inlet and the air outlet. The internal space includes an expansion space that expands as it approaches the straightening vane from the air inlet, and a columnar lower space that is connected to the straightening vane side of the expansion space without any step. The internal space is surrounded by an inner surface of the housing. The inner surface includes a curved surface surrounding the expansion space. If a direction in which the air intake port blows in the air is defined as a first direction and a direction perpendicular to the first direction is defined as a second direction, the direction of a normal to the curved surface changes from the first direction to the second direction on the curved surface as the air intake port approaches the air straightening vane. A blower device according to one aspect of the present disclosure includes a housing and a straightening vane. The housing is formed in a box shape having an internal space, and has an air inlet for feeding air into the internal space, and an air outlet for discharging the air to the outside of the internal space. The straightening vane is disposed between the air inlet and the air outlet. The internal space has an expansion space that expands as it approaches the straightening vane from the air inlet. The housing is formed of cloth. The internal space is supported by the air.

[0007] An air blowing system according to one embodiment of the present disclosure includes the above-mentioned air blowing device that expels first air as the air from an air outlet into an air-conditioned space, and a chamber device that draws in air from the air-conditioned space as second air, draws in air from outside as third air, and generates air mixed with the second air and the third air as the first air. Effect of the Invention

[0008] As described above, the present disclosure has an advantage of being able to reduce the air pressure loss inside the housing and improve the air blowing efficiency. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a side view showing a configuration of an air blowing system including an air blowing device according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing a blower device included in the blower system. [Diagram 3] FIG. 3 is an exploded perspective view showing the blower device of the same. [Figure 4] FIG. 4 is a perspective view showing a support structure for a straightening plate in the blower device of the above embodiment. [Diagram 5] FIG. 5 is a perspective view showing a main part of a support structure for a straightening vane in the blower device. [Figure 6] FIG. 6 is a cross-sectional view showing a comparative example of the above. [Figure 7] FIG. 7 is a cross-sectional view showing the blower device of the first modified example of the above embodiment. [Figure 8] FIG. 8 is a perspective view showing a blower device of a second modified example of the above embodiment. [Figure 9] FIG. 9 is a diagram showing the configuration of an airflow control system using the above-mentioned blowing system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] The present disclosure relates generally to a blower device and a blower system, and more particularly to a blower device and a blower system including a straightening vane.

[0011] The embodiment described below is merely an example of the present disclosure. The present disclosure is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0012] In the following description, unless otherwise specified, an X-axis, a Y-axis, and a Z-axis that are orthogonal to each other are defined in FIG. 2. For convenience, one of the two directions along the X-axis is defined as the rightward direction, and the other as the leftward direction. In addition, one of the two directions along the Y-axis is defined as the forward direction, and the other as the backward direction. In addition, one of the two directions along the Z-axis is defined as the upward direction, and the other as the downward direction.

[0013] (Embodiment) (1) Overview of the ventilation system 1 shows the configuration of a ventilation system 1 according to the present embodiment. The ventilation system 1 is used in facilities such as office buildings, offices, stores, factories, and commercial facilities. The ventilation system 1 may also be used in apartment buildings, detached houses, and the like.

[0014] The air blowing system 1 is attached to a ceiling 91 of the air-conditioned space 9. In this case, the ceiling 91 corresponds to a structure to which the air blowing system 1 is attached.

[0015] The air blowing system 1 includes an air blowing device 3, a chamber device 4, a duct 5, and a controller K1. The controller K1 drives the chamber device 4 to control the operation of the chamber device 4. The chamber device 4 draws in air in the air-conditioned space 9 as the second air A2. Furthermore, the chamber device 4 is connected to an external air passage 2 such as a duct arranged in the ceiling space 92 above the ceiling 91, and receives the third air A3 sent from an air conditioning facility (not shown) through the external air passage 2. The chamber device 4 then generates air obtained by mixing the second air A2 and the third air A3 as the first air A1. The air blowing device 3 and the chamber device 4 are connected to each other through a duct 5, and the chamber device 4 supplies the first air A1 to the air blowing device 3 by flowing the first air A1 into the duct 5. The air blowing device 3 blows out the first air A1 supplied from the duct 5 into the air-conditioned space 9.

[0016] The third air A3 is conditioned air generated by an air conditioning system, and is air in which at least one of temperature, humidity, and cleanliness has been adjusted. That is, the ventilation system 1 generates the first air A1 by mixing the second air A2 and the third air A3, so that the first air A1 includes conditioned air. The conditioned air may be air to which a fragrance has been added or to which the amount of viruses has been reduced.

[0017] (2) Blower As shown in FIGS. 1 to 3, the blower 3 includes a housing 31, a straightening plate 32, a cylindrical body 33, a frame , and four mounting brackets .

[0018] 1, the blower 3 is embedded in a mounting hole 91a in a ceiling 91. In order to embed the housing 31 of the blower 3 in the mounting hole 91a in the ceiling 91, the size of the mounting hole 91a is made slightly larger than the size of the housing 31. As a result, a gap is generated between the outer periphery of the housing 31 embedded in the mounting hole 91a and the periphery of the mounting hole 91a. Therefore, in order to hide the gap generated in the ceiling 91, a frame 36 is attached to the housing 31. The frame 36 has a rectangular frame shape and is attached to the lower end of the housing 31.

[0019] (2.1) Housing and cylinder The housing 31 is made of hard polystyrene foam (resin) and is formed into a hollow box shape having an internal space 310. The housing 31 includes an upper frustum portion 31a and a lower columnar portion 31b, and the internal space 310 is composed of an upper space 311 which is the internal space of the frustum portion 31a and a lower space 312 which is the internal space of the columnar portion 31b.

[0020] The frustum portion 31a has an outer shell that is substantially in the shape of a quadrangular truncated pyramid (or a hemisphere crushed in the vertical direction, or the upper half of an oblate ellipsoid crushed in the vertical direction, or a bowl shape). The upper space 311 formed inside the frustum portion 31a is also substantially in the shape of a quadrangular truncated pyramid (or a hemisphere crushed in the vertical direction, or the upper half of an oblate ellipsoid crushed in the vertical direction, or a bowl shape). An air supply port 31c is provided at the center (or apex) of the upper surface of the frustum portion 31a. The air supply port 31c has a circular cross section with its axial direction extending in the vertical direction along the Z axis.

[0021] The cylinder 33 is a cylindrical cylinder made of polypropylene (PP) resin. The cylinder 33 is insert-molded into the air inlet 31c so as to be coaxial with the air inlet 31c. The outer diameter of the cylinder 33 is smaller than that of the air inlet 31c, and the outer peripheral surface of the cylinder 33 is in contact with the inner peripheral surface of the air inlet 31c. The upper end of the cylinder 33 protrudes upward from the upper end of the air inlet 31c. A ring-shaped flange 33a is integrally provided on the outer peripheral surface of the lower end of the cylinder 33, and the flange 33a functions as a stopper that prevents the cylinder 33 from coming off the air inlet 31c. The upper end side of the cylinder 33 is fitted into the end of the duct 5 (see FIG. 1). The lower end of the air inlet 31c is spatially continuous with the upper space 311 of the internal space 310. The first air A1 sent from the chamber device 4 to the duct 5 passes through the cylinder 33 and the air supply port 31c and is blown out from the top to the bottom into the upper space 311 of the housing 31.

[0022] The columnar portion 31b has an outer shell of a substantially rectangular column shape, and the lower space 312 formed inside the columnar portion 31b also has a substantially rectangular column shape. A rectangular opening is formed on the lower surface of the columnar portion 31b as the air outlet 31d. The air outlet 31d is a square plane along the XY plane (a plane defined by the X-axis and the Y-axis), and the axial direction of the air outlet 31d is along the Z-axis.

[0023] (2.2) Current plate The rectifying plate 32 is formed in a square flat plate shape by resin molding using polypropylene as a material. The rectifying plate 32 has a first surface 32a and a second surface 32b that face each other in the thickness direction, and is disposed in the internal space 310 such that the first surface 32a faces the air supply port 31c and the second surface 32b faces the air outlet 31d.

[0024] (2.3) Frame and mounting bracket The frame 34 is a rectangular frame made of zinc steel plate and having an L-shaped cross section. As shown in Fig. 4, the frame 34 includes a base 34a and a standing wall 34b. The base 34a is formed in a rectangular frame shape by a flat plate along the XY plane. The standing wall 34b is formed in a rectangular frame shape by a flat plate extending upward from the outer periphery of the base 34a around the entire periphery of the base 34a.

[0025] Each of the four mounting brackets 35 is formed by bending a steel plate, and has a function of supporting the straightening plate 32 in the internal space 310. As shown in Figs. 4 and 5, the mounting bracket 35 includes a support portion 35a, a placement portion 35b, a fixing portion 35c, and a clamping portion 35d. The support portion 35a is a portion that extends vertically along the Z axis and is formed in a U shape with an open upper portion. The placement portion 35b is a plate-like portion that extends from one end of the support portion 35a in a direction away from the support portion 35a along the XY plane. The fixing portion 35c is a plate-like portion that extends from the other end of the support portion 35a in the opposite direction to the placement portion 35b along the XY plane. The clamping portion 35d is a plate-like portion that extends downward from the tip of the fixing portion 35c.

[0026] The four mounting brackets 35 are disposed on the upper surface of the ceiling 91. At this time, two pairs of mounting brackets 35 arranged in the front-rear direction along the Y axis are disposed in the left-right direction along the X axis. The pair of mounting brackets 35 on the left side have the fixing portion 35c facing left and the mounting portion 35b facing right. The pair of mounting brackets 35 on the right side have the mounting portion 35b facing left and the fixing portion 35c facing right. The pair of mounting brackets 35 on the left side support the left side of the frame 34, and the pair of mounting brackets 35 on the right side support the right side of the frame 34.

[0027] As shown in FIG. 5, a base 34a of the frame 34 is disposed at the bottom of a U-shaped support portion 35a of the mounting bracket 35, and the support portion 35a sandwiches the frame 34 in the X-axis direction.

[0028] The lower surface of the fixing portion 35c of the mounting bracket 35 abuts against the upper surface of a panel frame 94 of a ceiling panel that constitutes the ceiling 91. The clamping portion 35d, together with the support portion 35a, clamps the panel frame 94 in the X-axis direction. A circular insertion hole 35f is formed in the fixing portion 35c, and a screw (not shown) that passes through the insertion hole 35f is screwed into a screw hole (not shown) in the panel frame 94, whereby the mounting bracket 35 is fixed to the panel frame 94.

[0029] The four corners of the current plate 32 are placed on the respective mounting portions 35b of the four mounting brackets 35. At this time, the upper surfaces of the mounting portions 35b are in surface contact with the second surface 32b of the current plate 32. The mounting portions 35b are formed with screw holes 35e, and the current plate 32 is formed with circular through holes 32c at each of the four corners. Then, the current plate 32 is fixed to the mounting brackets 35 by screwing screws (not shown) that pass through the through holes 32c into the screw holes 35e.

[0030] When the first air A1 supplied to the upper space 311 of the housing 31 through the air intake port 31c collides with the first surface 32a of the rectifying plate 32, stress is generated in the rectifying plate 32, causing the rectifying plate 32 to bend. In particular, a larger stress is generated around the insertion hole 32c of the rectifying plate 32 than in other locations. However, as described above, by supporting the rectifying plate 32 from below in surface contact with the four mounting brackets 35, it is possible to suppress the stress generated around the insertion hole 32c of the rectifying plate 32, and the bending of the rectifying plate 32 is also reduced, compared to when the rectifying plate 32 is supported from above.

[0031] (2.4) Comparative Example FIG. 6 shows a schematic cross-sectional view of a blower device 6 of a comparative example.

[0032] The housing 61 of the blower 6 has a hollow rectangular shape. A cylindrical air inlet 62 is provided in the center of the upper surface of the housing 61. A square air outlet 63 is formed in the lower surface of the housing 61.

[0033] A square, flat-plate rectifying plate 64 is housed in an internal space 610 of the housing 61. An upper surface 64a of the rectifying plate 64 faces the air intake port 62, and a lower surface 64b of the rectifying plate 64 faces the air outlet port 63. The internal space 610 is divided into an upper space 611 above the rectifying plate 64 and a lower space 612 below the rectifying plate 64, with the rectifying plate 64 as a boundary.

[0034] A gap constituting a communication portion 61c is generated between the inner surface of the side wall of the housing 61 and the periphery of the rectifying plate 64. That is, on the outside of the rectifying plate 64, the communication portion 61c is formed to connect an upper space 611, which is a space on the upper surface 64a side, in the internal space 610, with a lower space 612, which is a space on the lower surface 64b side.

[0035] Then, air A10 is supplied from air intake port 62 to internal space 610 of housing 61. Air A10 supplied from air intake port 62 to internal space 610 from top to bottom flows along upper surface 64a of straightening plate 64, passes through communication portion 361 from top to bottom, proceeds toward air outlet 63, and is blown out downward from air outlet 63.

[0036] In such a blower device 6, a dead zone B1 where almost no air A10 flows occurs in the upper part of the upper space 611 of the housing 61. The dead zone B1 is likely to occur in particular in a corner of the upper space 611 where the housing 61 is bent at a right angle. When the dead zone B1 occurs in the upper space 611, the pressure loss of the air A1 in the internal space 610 becomes relatively large, and the blowing efficiency decreases.

[0037] (2.5) Expansion space of the case In order to suppress the decrease in air blowing efficiency as in the comparative example described above, the housing 31 of the air blower 3 of this embodiment is provided with an expansion space 313. The expansion space will be described below.

[0038] In the housing 31 having the frustum portion 31a and the columnar portion 31b of this embodiment, the internal space 310 has an expansion space 313. The expansion space 313 has a shape that widens as it approaches the air straightening plate 32 from the air supply port 31c.

[0039] Specifically, the frustum portion 31a makes the upper space 311 of the internal space 310 have a substantially quadrangular frustum shape. The air supply port 31c is located at the apex of the upper space 311, and the upper space 311 gradually widens as it advances downward from the air supply port 31c. That is, the internal space 310 includes the upper space 311 as an expansion space 313.

[0040] The internal space 310 is surrounded by the inner surface of the hollow housing 31, with the inner surface of the frustum portion 31a of the housing 31 being an upper inner surface 314 and the inner surface of the columnar portion 31b of the housing 31 being a lower inner surface 315. The upper inner surface 314 surrounds the sides and above of the expansion space 313 (upper space 311), and the lower inner surface 315 surrounds the sides of the lower space 312.

[0041] The upper inner surface 314 is configured as a curved surface. The curved surface that configures the upper inner surface 314 is preferably configured as follows. The direction in which the air supply port 31c sends the first air A1 into the expansion space 313 (internal space 310) is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. In this embodiment, the first direction is the up-down direction along the Z axis, and the second direction is the direction along the XY plane. The direction of the normal to the curved surface changes from the first direction (up-down direction) to the second direction (direction along the XY plane) as the curved surface approaches the straightening vane 32 from the air supply port 31c. That is, the angle that the normal to the curved surface makes with respect to the Z axis gradually increases as the curved surface approaches the straightening vane 32 from the air supply port 31c. The curved surface constituting the upper inner surface 314 is substantially hemispherical (for example, a curved surface like the surface of a hemisphere flattened in the vertical direction, or a curved surface like the surface of the upper half of an oblate ellipsoid flattened in the vertical direction) or bowl-shaped. Also, the cross-sectional area of ​​the expansion space 313 in the XY plane gradually increases as it moves downward along the Z axis.

[0042] The first air A1 flowed into the duct 5 from the chamber device 4 is supplied from the duct 5 through the cylinder 33 and the air supply port 31c to the upper space 311 of the housing 31. The first air A1 supplied from the air supply port 31c from the top to the bottom into the upper space 311 not only flows directly downward from the air supply port 31c and collides with the first surface 32a of the air straightening plate 32, but also flows downward from the air supply port 31c while gradually expanding along the upper inner surface 314 and collides with the first surface 32a of the air straightening plate 32. Since the upper inner surface 314 gradually expands as it moves downward, a dead zone where almost no first air A1 flows is unlikely to occur in the upper space 311. The first air A1 that collides with the first surface 32a of the straightening plate 32 flows along the first surface 32a, passes through the communication portion 31e from top to bottom, proceeds toward the air outlet 31d, and is blown downward from the air outlet 31d.

[0043] As described above, the expansion space 313 has a shape in which the upper corners of the upper space 611 of the comparative example are gently cut, and a dead zone like that of the comparative example is unlikely to occur in the expansion space 313. Therefore, the blower 3 can reduce the pressure loss of the first air A1 in the housing 31 and improve the blowing efficiency.

[0044] Furthermore, the upper inner surface 314 is configured as a curved surface, and the air current generated in the expansion space 313 flows smoothly due to the curved surface, so that the air blowing efficiency can be further improved.

[0045] Furthermore, the angle that the normal to the curved surface of upper inner surface 314 makes with respect to the Z axis gradually increases on the curved surface from air intake port 31c toward straightening vane 32. As a result, it is possible to simultaneously suppress dead zones in expansion space 313 and improve air blowing efficiency with a simple configuration.

[0046] In this embodiment, the position of the lower end of the upper inner surface 314 (the boundary between the upper inner surface 314 and the lower inner surface 315) is set above the position of the current vane 32. That is, the internal space 310 has an expansion space 313 between the air supply port 31c and the current vane 32. In particular, it is preferable that the position of the lower end of the upper inner surface 314 is a position in the up-down direction of the current vane 32. Therefore, the air blower 3 does not need to expand the lower space 312, and it is possible to prevent the device from becoming larger.

[0047] In this embodiment, the outer circumferential surface of the housing 31 becomes wider from the air inlet 31c toward the straightening vane 32. That is, the upper part of the housing 31 has a shape similar (or almost similar) to the shape of the upper space 311. Therefore, the blower 3 can ensure sufficient strength while making the thickness of the housing 31 relatively thin.

[0048] (3) First Modification FIG. 7 shows a cross-sectional view of a blower device 3A of a first modified example.

[0049] The housing 31A of the blower 3A is formed of resin in the shape of a hollow rectangular box having an internal space 310A. In this embodiment, the housing 31A is formed of hard polystyrene foam. The upper and lower surfaces of the housing 31A are square. An air inlet 31f is provided at the center of the upper surface of the housing 31A. The air inlet 31f has a circular cross section with its axial direction extending vertically along the Z axis. A cylinder 33 is insert-molded into the air inlet 31f so as to be coaxial with the air inlet 31f. A square opening is formed as an air outlet 31g on the lower surface of the housing 31A. The air outlet 31g is a square plane along the XY plane, and the axial direction of the air outlet 31g is along the Z axis.

[0050] The internal space 310A is composed of an upper space 311A ​​above the internal space 310A and a lower space 312A below the internal space 310A. The internal space 310A, the upper space 311A, and the lower space 312A have the same shapes as the above-mentioned internal space 310, the upper space 311, and the lower space 312. In the internal space 310A, a straightening plate 32 is arranged such that a first surface 32a faces the air supply port 31f and a second surface 32b faces the air blow port 31g.

[0051] In such a blower 3A, a recess 31i that constitutes an internal space 310A is formed on the lower surface of a rectangular housing 31A. That is, the shape of the housing 31A can be made to be a shape that is not related to the shape of the internal space 310A, improving the versatility of the blower.

[0052] (4) Second Modification FIG. 8 is an external view of a blower device 3B of the second modified example, showing the blower device 3B before being installed on a ceiling 91. As shown in FIG.

[0053] The housing 31B of the blower 3B is made of cloth. In this embodiment, the cloth is used as a material for an airbag to protect a vehicle occupant. Examples of the cloth that is used as a material for an airbag include woven fabric made of chemical fibers such as nylon.

[0054] An air supply port 31j is provided at the center of the upper surface of the housing 31B. The air supply port 31j has a circular cross section with its axial direction extending vertically along the Z axis. A cylinder 33 is insert-molded into the air supply port 31j so as to be positioned coaxially with the air supply port 31j. A square opening is formed as an air outlet 31k on the lower surface of the housing 31B. The air outlet 31k is a square flat surface along the XY plane, and the axial direction of the air outlet 31k is along the Z axis.

[0055] When the blower 3B is installed on the ceiling 91 and the upper end side of the cylinder 33 is fitted into the end of the duct 5 (see FIG. 1), the weight of the blower 3B causes the housing 31B to expand in the vertical direction. Furthermore, when the first air A1 is supplied into the housing 31B through the air inlet 31c, the internal pressure in the housing 31B increases, and the housing 31B expands. That is, the housing 31B is supported by the first air A1 in the housing 31B (internal space). The expanded housing 31B has a shape with an upper frustum portion and a lower columnar portion, similar to the housing 31 in FIG. 2, and has an expansion space that expands as it approaches the air inlet 31c toward the straightening vane 32.

[0056] 1 and 2, the housing 31 is replaced with a housing 31B. Thus, like the air blower 3, the air blower 3B can reduce the pressure loss of the first air A1 in the housing 31B and improve the air blowing efficiency. Furthermore, the housing 31B of the air blower 3B is formed from a cloth that is used as an airbag material, which allows the air blower 3B to be further lightened and further miniaturized before installation (reducing the vertical dimension).

[0057] (5) Third Modification The air blowing devices 3, 3A, and 3B may include a drive mechanism for slidingly moving the straightening vane 32 in the left-right direction. The drive mechanism includes, for example, an electric actuator.

[0058] In this modification, the controller K1 of the blower 3 controls the position of the rectifying vane 32 (position control of the electric actuator). At this time, it is preferable that the controller K1 receives an external signal and controls the position of the rectifying vane 32 based on this external signal. That is, the controller K1 can adjust the slide position of the rectifying vane 32 to the center in the left-right direction of the internal space 310, 310A, the right side in the left-right direction of the internal space 310, 310A, or the left side in the left-right direction of the internal space 310, 310A in response to the external signal. Note that the slide position of the rectifying vane 32 may be displaceable in four or more steps or continuously in an infinitely stepless manner, instead of the three steps of the center, right side, and left side of the internal space 310, 310A.

[0059] The external signal is, for example, a signal output by an operating device installed on a wall surface of the air-conditioned space 9. The operating device has at least one of a push button, a slide knob, a touch panel, etc., operated by the caretaker as an operating unit, and the operating unit is operated corresponding to the slide position of the air straightening vane 32. The operating device outputs an external signal according to the operation of the operating unit to the controller K1. In this case, the caretaker operates the operating unit according to the position of the person present in the air-conditioned space 9. In other words, the air blowing device 3 can generate a comfortable air-conditioned environment for each person in the air-conditioned space 9 by manually operating the operating device.

[0060] Furthermore, the external signal may be, for example, a signal output by a human body detection sensor installed in the air-conditioned space 9. The human body detection sensor includes an infrared sensor, a camera image sensor, a thermal image sensor, or the like, detects the position of a person in the air-conditioned space 9, and outputs the detection result to the controller K1 as an external signal. In this case, the controller K1 automatically controls the slide position of the baffle plate 32 according to the position of the person in the air-conditioned space 9. That is, the blower device 3 can generate a comfortable air-conditioned environment for each person in the air-conditioned space 9 by automatic control using the human body detection sensor.

[0061] (6) Airflow control system FIG. 9 shows an airflow control system 8 using the above-mentioned air blowing system 1.

[0062] The airflow control system 8 includes, in addition to the air blowing system 1, a plurality of floor ventilation devices 71, an air conditioning device 72, and an external air passage 2.

[0063] Each of the multiple floor ventilators 71 is embedded in the floor 93 of the air-conditioned space 9 and draws in the air in the air-conditioned space 9 as the fourth air A4. The fourth air A4 drawn in by each of the multiple floor ventilators 71 is supplied to the air conditioning equipment 72 through the return air passage 21. By providing the multiple floor ventilators 71, the airflow control system 8 can draw in the fourth air A4 more strongly than when the multiple floor ventilators 71 are not provided. As a result, the airflow control system 8 can increase the amount of ventilation per unit time in the air-conditioned space 9 and quickly replace the air in the air-conditioned space 9.

[0064] The air conditioning equipment 72 adjusts at least one of the temperature, humidity, and cleanliness of the fourth air A4, and sends it to the external air passage 2 as the third air A3. The third air A3 is conditioned air generated by the air conditioning equipment 72. Note that the conditioned air may be air to which a fragrance has been added or to which the amount of viruses has been reduced.

[0065] The air supply system 1 draws in air within the air-conditioned space 9 as the second air A2. Furthermore, the air supply system 1 receives the third air A3 sent out from the air conditioning equipment 72 via the external air passage 2. Then, the air supply system 1 blows a mixture of the second air A2 and the third air A3 into the air-conditioned space 9 as the first air A1.

[0066] In particular, the air blowing system 1 including any one of the above-mentioned air blowers 3, 3A, and 3B can blow out the first air A1, which has been adjusted in at least one of temperature, humidity, cleanliness, fragrance, and virus amount, by controlling the directionality of the first air A1 as a directional airflow and concentrating it in a small area where one (or a small number of) people are present. That is, when performing zone control of air conditioning in the air-conditioned space 9, it becomes possible to narrow each zone and adjust the air quality for each narrow zone. It also becomes possible to change the position of the zone in the air-conditioned space 9. As a result, the airflow control system 8 can provide a comfortable air-conditioned environment for each person H1 and H2 in the air-conditioned space 9.

[0067] Here, in the above-mentioned third modified example, the direction of the first air A1 sent by the air blowing system 1 to the person H2 on the right side in FIG. 9 corresponds to a first state in which the straightening vane 32 is located at approximately the center in the left-right direction. Also, the direction of the first air A1 sent by the air blowing system 1 to the person H1 on the left side in FIG. 9 corresponds to a second state in which the straightening vane 32 is located on either one side in the left-right direction, not at approximately the center in the left-right direction. The switching control of the straightening vane 32 between the first state and the second state may be either manual control by an operating device installed on the wall surface of the air-conditioned space 9, or automatic control using a human body detection sensor (such as an infrared sensor, a camera image sensor, or a thermal image sensor) installed in the air-conditioned space 9. The human body detection sensor detects the positions of the people H1 and H2 relative to the air blowing system 1 (such as directly below, to the right, or to the left of the air blowing system 1).

[0068] Further, for the automatic control of the straightening vane 32, an authentication system (not shown) that performs an authentication process when a person enters the air-conditioned space 9 may be used. The authentication system determines whether or not a person is permitted to enter the air-conditioned space 9 by using, for example, a card reader or a biometric authentication device, and manages entry and exit from the air-conditioned space 9. The air supply system 1 automatically controls the straightening vane 32 by using the authentication result of the authentication system. For example, the persons H1 and H2 who are permitted to enter the air-conditioned space 9 by the authentication system, the positions of the seats of the persons H1 and H2, and the air supply systems 1 near the seats are paired and associated with each other. Then, the air supply system 1 controls the position of the straightening vane 32 of each air supply system 1 so that the first air A1 is directed toward each seat of the persons H1 and H2.

[0069] At this time, it is preferable that the air supply system 1 holds data on the preferred air quality of each of the people H1 and H2 in advance, and reflects the preferred air quality of each of the people H1 and H2 in the first air A1 blown out by each air supply system 1. That is, the air supply system 1 individually controls the quality of the first air A1 blown out by each air supply system 1 so that the air quality is the preferred air quality of each of the people H1 and H2. For example, the person H1 prefers warm air rather than cold air because he or she has poor circulation, and also wants to relax with a favorite fragrance. Therefore, the air supply system 1 near the person H1 blows warm air containing the person H1's favorite fragrance as the first air A1. Furthermore, the person H2 does not have any preference regarding air quality if the temperature in the air-conditioned space 9 is, for example, 25 degrees or lower, such as in winter. However, person H2 is sensitive to heat, and therefore desires cool, dry air at a temperature of 24 degrees or less when the temperature in the air-conditioned space 9 exceeds 25 degrees, for example, as in summer. Therefore, when the temperature in the air-conditioned space 9 exceeds 25 degrees, the air supply system 1 near person H2 blows cool, dry air at a temperature of 24 degrees or less, which is preferred by person H2, as the first air A1. Such control of air quality is realized by the computer of the air supply system 1 executing a program created in advance.

[0070] Furthermore, if there is only one air supply system 1 in the air-conditioned space 9, the single air supply system 1 controls the first air A1 for the two people H1 and H2 as follows. When the air supply system 1 blows the first air A1 to the two people H1 and H2, the air supply system 1 performs direction switching control such that the air supply direction of the first air A1 is alternately directed toward the person H1 for a predetermined time, then toward the person H2 for a predetermined time, and then toward the person H1 for a predetermined time again. At this time, as described above, the preferred air quality of each of the people H1 and H2 may be alternately reflected in the first air A1 as individual control that reflects the personal preferences of each of the people H1 and H2 in the first air A1.

[0071] Furthermore, one air blowing system 1 may fix the blowing direction of the first air A1 for the two people H1 and H2, without performing direction switching control to switch the blowing direction of the first air A1. In this case, the air blowing system 1 may reflect only the air quality commonly preferred by the two people H1 and H2 in the first air A1. Alternatively, if there is no common air quality preference for the two people H1 and H2, a predetermined standard air quality may be reflected in the first air A1.

[0072] (7) Other modifications The housings 31 and 31A may be made of a resin other than hard polystyrene foam, wood, or the like.

[0073] The current plate 32 is a single plate member, but instead of the current plate 32, a plurality of plate members may be used as the current plate.

[0074] Furthermore, the structure to which the air blowing system 1 is attached is not limited to the ceiling 91, but may be another structure such as a stand provided above the air-conditioned space.

[0075] In addition, the extended spaces such as the extended spaces 313 and 313A may not be generated over the entire area of ​​the upper spaces such as the upper spaces 311 and 311A. For example, the extended spaces may be generated only above the upper spaces. In addition, the extended spaces may not be formed over the entire circumference on the XY plane.

[0076] Moreover, the blowing devices 3, 3A, 3B may further include an actuator such as an electric actuator, a pneumatic actuator, or a hydraulic actuator. The actuator slides the rectifying plate 32 in a direction along the XY plane so as to change a communication portion, which is a gap formed between the side surface of the internal space 310, 310A and the end of the rectifying plate 32. By changing the sliding position of the rectifying plate 32, the directionality of the first air A1 blown out from the air outlets 31d, 31g can be controlled.

[0077] (8) Summary The blower (3, 3A, 3B) of the first aspect according to the embodiment described above includes a housing (31, 31A, 31B) and a straightening vane (32). The housing (31, 31A, 31B) is formed in a box shape having an internal space (310, 310A), and includes an air inlet (31c, 31f) for feeding air into the internal space (310, 310A) and an air outlet (31d, 31g) for discharging air to the outside of the internal space (310, 310A). The straightening vane (32) is disposed between the air inlet (31c, 31f) and the air outlet (31d, 31g). The internal space (310, 310A) includes an expansion space (313, 313A) that expands from the air inlet (31c, 31f) toward the straightening vane (32).

[0078] The above-described air blowing device (3, 3A, 3B) can reduce the air pressure loss in the housing (31, 31A, 31B) and improve the air blowing efficiency.

[0079] In the second aspect of the blower device (3, 3A, 3B) according to the above-described embodiment, in the first aspect, the internal space (310, 310A) is surrounded by the inner surface (314, 315, 314A, 315A) of the housing (31, 31A, 31B), and it is preferable that the inner surface includes a curved surface surrounding the expansion space (313, 313A).

[0080] In the above-described air blowing device (3, 3A, 3B), the air current generated in the internal space (310, 310A) flows smoothly due to the curved surface, so that the air blowing efficiency can be further improved.

[0081] In the second aspect of the air blower (3, 3A, 3B) according to the third aspect of the embodiment described above, the direction in which the air inlets (31c, 31f) blow air is defined as a first direction, and the direction perpendicular to the first direction is defined as a second direction. It is preferable that the direction of the normal to the curved surface changes from the first direction to the second direction on the curved surface from the air inlets (31c, 31f) toward the straightening vane (32).

[0082] The above-described air blowing device (3, 3A, 3B) can achieve both suppression of dead zones in the expansion spaces (313, 313A) and improvement of air blowing efficiency with a simple configuration.

[0083] In the fourth aspect of the air blower (3, 3A, 3B) according to the above-described embodiment, in any one of the first to third aspects, it is preferable that the internal space (310, 310A) includes an expansion space (313, 313A) between the air inlet (31c, 31f) and the baffle vane (32).

[0084] The above-described air blowing device (3, 3A, 3B) can prevent the device from becoming large in size.

[0085] In the fifth aspect of the air blower (3, 3B) according to the above-described embodiment, in any one of the first to fourth aspects, it is preferable that the outer circumferential surface of the housing (31, 31B) becomes wider from the air inlet (31c) toward the air straightening vane (32).

[0086] The above-described air blowing device (3, 3B) can ensure sufficient strength while making the thickness of the housing (31, 31B) relatively thin.

[0087] In the air blower (3A) of the sixth aspect according to the above-described embodiment, in any one of the first to fourth aspects, it is preferable that the housing (31A) has a recess (31i) that forms the internal space (310A).

[0088] In the above-described blower (3A), the shape of the casing (31A) can be made independent of the shape of the internal space (310A), improving the versatility of the blower.

[0089] In the air blower (3, 3A) of the seventh aspect according to the above-described embodiment, in any one of the first to sixth aspects, the housing (31, 31A) is preferably made of resin.

[0090] The above-described air blower (3, 3A) can achieve both weight reduction and sufficient strength.

[0091] In the air blower (3B) of the eighth aspect according to the above-mentioned embodiment, in any one of the first to sixth aspects, it is preferable that the housing (31B) is made of cloth, and the internal space is supported by air.

[0092] The above-described air blower (3B) can achieve both further weight reduction and sufficient strength.

[0093] In the blower device (3B) of the ninth aspect according to the above-mentioned embodiment, in the eighth aspect, the fabric is preferably a fabric used for an airbag.

[0094] The above-described air blower (3B) can ensure sufficient strength.

[0095] It is preferable that the air blower (3, 3A, 3B) of the tenth aspect according to the above-mentioned embodiment, in any one of the first to ninth aspects, further includes a mounting bracket (35) that supports the baffle plate (32) by making surface contact with the baffle plate (32) from below.

[0096] The above-described air blower (3, 3A, 3B) can suppress stress generated in the air straightening plate (32) and also reduces bending of the air straightening plate (32) as compared with the case where the air straightening plate (32) is supported from above.

[0097] The air blowing system (1) of the eleventh aspect according to the above-mentioned embodiment includes the air blowing device (3) of any one of the first to ninth aspects and a chamber device (4). The air blowing device (3) blows out the first air (A1) as air from the air outlets (31d, 31g) to the air-conditioned space (9). The chamber device (4) draws in the air in the air-conditioned space (9) as the second air (A2), draws in air from the outside as the third air (A3), and generates the first air (A1) by mixing the second air (A2) and the third air (A3).

[0098] The above-described air blowing system (1) can reduce the air pressure loss in the housings (31, 31A, 31B) of the air blowers (3, 3A, 3B) and improve the air blowing efficiency.

[0099] In the air blowing system (1) of the twelfth aspect according to the above-mentioned embodiment, in the eleventh aspect, it is preferable that the first air (A1) contains conditioned air.

[0100] The above-mentioned ventilation system (1) is capable of adjusting the air quality. [Explanation of symbols]

[0101] 1. Air Blower System 3, 3A, 3B air blower 31, 31A, 31B housing 310, 310A interior space 313, 313A Expansion Space 314, 314A Upper inner surface (inner surface) 315, 315A Lower inner surface (inner surface) 31c, 31f Air supply port 31d, 31g air outlet 31i Recess 32 Rectifier plate 35 Mounting bracket 4. Chamber Apparatus A1 No. 1 Air A2 2nd Air A3 3rd Air

Claims

1. a housing formed in a box shape having an internal space, the housing having an air intake port for feeding air into the internal space and an air outlet for discharging the air to the outside of the internal space; a straightening plate disposed between the air inlet and the air outlet, The internal space is an expansion space that expands as it approaches the air straightening plate from the air intake port; a columnar lower space that is connected to the expansion space on the side of the straightening plate without any step; The internal space is surrounded by an inner surface of the housing, The inner surface includes a curved surface that surrounds the expansion space, If a direction in which the air supply port sends in the air is a first direction, and a direction perpendicular to the first direction is a second direction, The direction of the normal to the curved surface changes from the first direction to the second direction on the curved surface as the air approaches the air straightening vane from the air inlet. Blower device.

2. The housing is made of resin. The blower device of claim 1.

3. a housing formed in a box shape having an internal space, the housing having an air intake port for feeding air into the internal space and an air outlet for discharging the air to the outside of the internal space; a straightening plate disposed between the air inlet and the air outlet, The internal space has an expansion space that expands as it approaches the air straightening vane from the air supply port, The housing is made of cloth, The internal space is supported by the air. Blower device.

4. The fabric is a fabric used for airbags. The blower device according to claim 3.

5. The internal space is surrounded by an inner surface of the housing, The inner surface includes a curved surface that surrounds the expansion space. The blower device according to claim 3 or 4.

6. If a direction in which the air supply port sends in the air is a first direction, and a direction perpendicular to the first direction is a second direction, The direction of the normal to the curved surface changes from the first direction to the second direction on the curved surface as the air approaches the air straightening vane from the air inlet. The blower device according to claim 5.

7. The internal space includes the expansion space between the air inlet and the air straightening plate.

7. The blower device according to claim 1.

8. The outer peripheral surface of the housing expands from the air inlet toward the air straightening plate. A blower device according to any one of claims 1 to 7.

9. The housing has a recess that defines the internal space. A blower device according to any one of claims 1 to 7.

10. The airflow adjusting plate further includes a mounting bracket that supports the airflow adjusting plate by surface contact with the airflow adjusting plate from below. A blower device according to any one of claims 1 to 9.

11. 10. The air blower according to claim 1 , which blows out a first air as the air from the air blowing port into an air-conditioned space; a chamber device that draws in air in the air-conditioned space as second air, draws in air from the outside as third air, and generates air obtained by mixing the second air and the third air as the first air. Blowing system.

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