Airflow blowing device

Abstract

The present disclosure addresses the problem of transporting functional components more efficiently to a target area. An airflow blower (1) comprises a body (2), a fan (3), a straightening unit (8), and an applying unit (73). The body (2) has a first inlet (23), an outlet (24), and a channel (26). The straightening unit (8) is located between the fan (3) and the outlet (24) in the direction (D1). The straightening unit (8) has a second inlet (411). The straightening unit (8) divides the airflow into a first airflow and a second airflow. The flow velocity of the first airflow is equal to or greater than a predetermined value. The flow velocity of the second airflow is less than the predetermined value. The applying unit (73) applies functional components to the airflow within the range where a first region (R1) through which the first airflow passes is projected along the direction (D1) and within the range from the second inlet (411) to the outlet (24).

Description

[Technical Field]

[0001] The present disclosure relates to an airflow blowing device, and more particularly to an airflow blowing device including a fan. [Background technology]

[0002] Patent Document 1 discloses a blower that includes a multi-blade fan and an ion generating source that generates ions, and that blows air containing ions from an outlet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2015 / 053053 Summary of the Invention

[0004] In an air blowing device (airflow blowing device) that blows air containing functional components such as ions as disclosed in Patent Document 1, it is desired to more efficiently transport the functional components to a target area.

[0005] An object of the present disclosure is to provide an airflow blowing device that can more efficiently deliver functional ingredients to a target area.

[0006] An air blowing device according to one aspect of the present disclosure includes a main body, a fan, a rectifying unit, and an applying unit. The main body has a first gas inlet, a gas outlet, and a flow path. The first inlet is provided at a first end of the main body. The outlet is provided at a second end of the main body. The flow path connects the first inlet and the outlet. The cross section of the flow path is circular. The fan is disposed inside the main body. The fan generates an airflow that is the flow of the gas. The rectifying unit is located between the fan and the outlet in a direction from the first inlet to the outlet. The rectifying unit has a second gas inlet. The applying unit releases a functional ingredient to apply the functional ingredient to the airflow. The rectifying unit divides the airflow into a first airflow and a second airflow. The first region through which the first airflow passes is located more inward than the second region through which the second airflow passes in a plan view along the direction. The flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position. The flow velocity of the second airflow is less than the predetermined value at the predetermined position. The imparting unit imparts the functional ingredient to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet. The rectifying unit includes a first rectifying device and a second rectifying device. The first rectifying device has the second inlet and turns the airflow. The second rectifying device is located between the first rectifying device and the outlet in the direction and aligns the direction of the airflow from the first inlet toward the outlet. The first rectifying device turns the swirling airflow downstream of the fan into an airflow toward the center of the fan, forming a flow velocity distribution downstream of the first rectifying device in which the speed of the first airflow is faster than the speed of the second airflow. An air blowing device according to one aspect of the present disclosure includes a main body, a fan, a rectifying unit, and an applying unit. The main body has a first gas inlet, a gas outlet, and a flow path. The first inlet is provided at a first end of the main body. The outlet is provided at a second end of the main body. The flow path connects the first inlet and the outlet. The cross section of the flow path is circular. The fan is disposed inside the main body. The fan generates an airflow that is the flow of the gas. The rectifying unit is located between the fan and the outlet in a direction from the first inlet to the outlet. The rectifying unit has a second gas inlet. The applying unit releases a functional ingredient to apply the functional ingredient to the airflow. The rectifying unit divides the airflow into a first airflow and a second airflow. The first region through which the first airflow passes is located inside the second region through which the second airflow passes in a plan view along the direction. The flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position. The flow velocity of the second airflow is less than the predetermined value at the predetermined position. The imparting unit imparts the functional ingredient to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet. The rectifying unit includes a first rectifying device, a second rectifying device, and a third rectifying device. The first rectifying device has the second inlet and turns the airflow. The second rectifying device is located between the first rectifying device and the outlet in the direction and aligns the direction of the airflow from the first inlet to the outlet. The third rectifying device is located between the first rectifying device and the second rectifying device in the direction and has a flow path with a circular cross-sectional shape. The third rectifier has a circular inlet through which the gas flows and a circular outlet through which the gas flows. The diameter of the outlet is smaller than the diameter of the inlet. The imparting unit imparts the functional ingredient to the airflow at the outlet of the third rectifier by releasing the functional ingredient toward the inlet of the third rectifier. An air blowing device according to one aspect of the present disclosure includes a main body, a fan, a rectifying unit, and an applying unit. The main body has a first gas inlet, a gas outlet, and a flow path. The first inlet is provided at a first end of the main body. The outlet is provided at a second end of the main body. The flow path connects the first inlet and the outlet. The cross section of the flow path is circular. The fan is disposed inside the main body. The fan generates an airflow that is the flow of the gas. The rectifying unit is located between the fan and the outlet in a direction from the first inlet to the outlet. The rectifying unit has a second gas inlet. The applying unit releases a functional ingredient to apply the functional ingredient to the airflow. The rectifying unit divides the airflow into a first airflow and a second airflow. The first region through which the first airflow passes is located inside the second region through which the second airflow passes, in a plan view along the direction. The flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position. The flow velocity of the second airflow is less than the predetermined value at the predetermined position. The imparting unit imparts the functional ingredient to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet. The rectifying unit includes a first rectifying device and a second rectifying device. The first rectifying device has the second inlet and turns the airflow. The second rectifying device is located between the first rectifying device and the outlet in the direction and aligns the direction of the airflow from the first inlet to the outlet. The imparting unit imparts the functional ingredient to the airflow between the second rectifying device and the outlet. An air blowing device according to one aspect of the present disclosure includes a main body, a fan, a rectifying unit, and an applying unit. The main body has a first gas inlet, a gas outlet, and a flow path. The first inlet is provided at a first end of the main body. The outlet is provided at a second end of the main body. The flow path connects the first inlet and the outlet. The cross section of the flow path is circular. The fan is disposed inside the main body. The fan generates an airflow that is the flow of the gas. The rectifying unit is located between the fan and the outlet in a direction from the first inlet to the outlet. The rectifying unit has a second gas inlet. The applying unit releases a functional ingredient to apply the functional ingredient to the airflow. The rectifying unit divides the airflow into a first airflow and a second airflow. The first region through which the first airflow passes is located inside the second region through which the second airflow passes, in a plan view along the direction. The flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position. The flow velocity of the second airflow is less than the predetermined value at the predetermined position. The imparting unit imparts the functional ingredient to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet. The rectifying unit includes a first rectifying device and a second rectifying device. The first rectifying device has the second inlet and turns the airflow. The second rectifying device is located between the first rectifying device and the outlet in the direction and aligns the direction of the airflow from the first inlet to the outlet. The second rectifying device has a passage portion formed to block the flow path. The passage portion has a discharge portion connecting the internal space of the passage portion to the flow path. The release section is located within a range obtained by projecting the first region at the predetermined position along the direction. The imparting section imparts the functional ingredient to the airflow at the release section by releasing the functional ingredient into the internal space of the passage section. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram of the air blowing device according to the first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the air blowing device. [Figure 3] Figure 3A is a plan view of a fan in the air blowing device of the same, Figure 3B is a plan view of a first rectifying device in the air blowing device of the same, and Figure 3C is a plan view of a second rectifying device in the air blowing device of the same. [Figure 4] FIG. 4 is a perspective view of the air blowing device. [Figure 5] 5A and 5B are flow velocity distribution diagrams of the air blowing device according to the first embodiment and a comparative example, respectively. [Figure 6] FIG. 6 is a schematic diagram of an air blowing device according to the second embodiment. [Figure 7] FIG. 7 is a schematic diagram of an air blowing device according to a third embodiment. [Figure 8] FIG. 8 is a schematic diagram of an air blowing device according to the fourth embodiment. [Figure 9] FIG. 9 is a cross-sectional view taken along line AA in FIG. [Figure 10] FIG. 10 is a schematic diagram of an air blowing device according to the fifth embodiment. [Figure 11] FIG. 11 is a plan view of a second airflow straightening device in an air blowing device according to a sixth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Preferred embodiments of the present disclosure will be described in detail below with reference to the drawings. In the following embodiments, common elements are designated by the same reference numerals, and redundant descriptions of the common elements will be omitted. Each of the following embodiments is merely one of various embodiments of the present disclosure. Various modifications to each embodiment are possible depending on the design, etc., as long as the object of the present disclosure can be achieved. The drawings described in the following embodiments are schematic diagrams, and the ratios of the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensional ratios.

[0009] (Embodiment 1) The air blowing device according to the first embodiment will be described below with reference to FIGS. 1 to 5B.

[0010] (1) Overview 1 is used for space zoning in facilities, for example. Space zoning is the zoning of air, and means creating an air environment in a specific area within a target space without creating physical barriers such as walls or partitions.

[0011] The facility is, for example, an office building. The target space is, for example, a free address office in the office building. The target space is not limited to a free address office, and may be, for example, a conference room space.

[0012] Examples of facilities include office buildings, as well as hotels, hospitals, educational facilities, detached houses, apartment complexes (dwelling units and common areas), stores, commercial facilities, art galleries, and museums.Facilities do not only refer to buildings, but may also include the buildings and the grounds on which they are located, such as factories, parks, amusement facilities, theme parks, airports, train stations, and domed stadiums.

[0013] The air blowing device 1 includes a main body 2, a fan 3, a blowing unit 73, and a rectifying unit 8.

[0014] The main body 2 has a first gas inlet 23 at a first end 21, a gas outlet 24 (first outlet) at a second end 22, and a flow path 26 connecting the first inlet 23 and the outlet 24. The cross section of the flow path 26 is circular.

[0015] The fan 3 is disposed inside the main body 2 (flow path 26). The fan 3 generates an airflow, which is a flow of gas. The airflow is blown out from the outlet 24 into the target space. The airflow blown out into the target space is a jet flow, and is a directional airflow with a straight-line tendency. The airflow is a flow of air.

[0016] The flow straightening unit 8 is located between the fan 3 and the outlet 24 in the direction D1 along the direction from the first inlet 23 toward the outlet 24. The flow straightening unit 8 has a second inlet 411 for gas.

[0017] The airflow straightening unit 8 divides the airflow into a first airflow and a second airflow. The first region R1 through which the first airflow passes is located more inward than the second region R2 through which the second airflow passes in a plan view along the direction D1. The first region R1 and the second region R2 have concentric circular shapes. The flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position. The "predetermined position" in the first embodiment is, for example, the outlet 24. The flow velocity of the second airflow is less than a predetermined value at the outlet 24.

[0018] The imparting unit 73 emits a functional component to impart the functional component to the airflow. Examples of the functional component include a deodorizing component, a fragrance component, a disinfecting component, a sterilizing component, a beauty component, and a medicinal component.

[0019] The application section 73 of the first embodiment is disposed so as to be located near the center of the second inlet 411 of the flow rectification section 8 in a plan view along the direction D1.

[0020] The application section 73 of embodiment 1 applies a functional component to the airflow within the range obtained by projecting the first region R1 at a predetermined position (outlet 24) along the direction D1, and within the range from the second inlet 411 to the outlet 24.

[0021] Within the range from the second inlet 411 of the rectifier 8 to the outlet 24 of the main body 2, the airflow is less turbulent than near the fan 3. The airflow blowing device 1 of embodiment 1 imparts the functional component to the airflow within the range from the second inlet 411 to the outlet 24 and within the range where the first region R1 is projected along the direction D1, and therefore can stably impart the functional component to the first airflow. Because the first airflow is less likely to diffuse, the airflow blowing device 1 of embodiment 1 can suppress the diffusion of the functional component and efficiently transport the functional component to the target region.

[0022] (2) Details As shown in FIG. 4 , the airflow blowing system 100 is attached to a wiring duct 13 provided on a ceiling, for example. The airflow blowing system 100 includes an airflow blowing device 1, an attachment device 14, an arm 15, and a connecting device 16. The attachment device 14 is slidably attached to the wiring duct 13. The arm 15 has a first end 151 and a second end 152. The first end 151 of the arm 15 is connected to the attachment device 14. The connecting device 16 connects the second end 152 of the arm 15 to the main body 2 of the airflow blowing device 1. By attaching the attachment device 14 to the wiring duct 13, the airflow blowing system 100 is electrically connected to an AC power supply connected to the wiring duct 13. The airflow blowing system 100 further includes a power supply circuit, a drive circuit, and a control device. The power supply circuit converts AC voltage from the AC power supply into a predetermined DC voltage and outputs it. The drive circuit receives DC voltage output from the power supply circuit as input and drives the motor 36 of the fan 3. The power supply circuit, drive circuit, and control device are housed within the housing of the mounting device 14. The arm 15 and the connecting device 16 have spaces for passing the electric wires connected to the drive circuit.

[0023] The control device includes a computer system. The computer system is primarily composed of a processor and memory as hardware. The processor executes a program stored in the computer system's memory to realize the control device's functions. The program may be pre-stored in the computer system's memory, provided via a telecommunications line, or provided on a non-transitory recording medium such as a memory card, optical disk, or hard disk drive that is readable by the computer system. The processor of the computer system is composed of one or more electronic circuits, including a semiconductor integrated circuit (IC) or a large-scale integrated circuit (LSI). The IC or LSI referred to here is referred to by different names depending on the degree of integration, including integrated circuits called system LSIs, very large-scale integration (VLSI), or ultra-large-scale integration (ULSI). Furthermore, a field-programmable gate array (FPGA), which is programmable after the LSI is manufactured, or a logic device capable of reconfiguring the connections within the LSI or the circuit partitions within the LSI, can also be used as a processor. Multiple electronic circuits may be integrated on a single chip or distributed across multiple chips. The multiple chips may be integrated into one device or distributed across multiple devices. The computer system referred to here includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller also comprises one or more electronic circuits, including semiconductor integrated circuits or large-scale integrated circuits.

[0024] (2.1) Airflow blowing device 1 and 2, the air blowing device 1 includes a main body 2, a fan 3, a supply device 7, and a rectifying unit 8. The air blowing device 1 can adjust the speed of the air blown out from the outlet 24 by adjusting the rotation speed of the fan 3. The rotation speed of the fan 3 changes in response to a change in the magnitude of the voltage supplied from the drive circuit to the motor 36.

[0025] The main body 2 of the first embodiment is cylindrical. The main body 2 has a first end 21 and a second end 22. The first end 21 has a first gas inlet 23, and the second end 22 has a gas outlet 24. The material of the main body 2 is, for example, but is not limited to, metal or resin. The axial direction of the main body 2 of the first embodiment is along direction D1.

[0026] The main body 2 has a communication hole 25. The communication hole 25 in the first embodiment penetrates between the first end 21 of the main body 2 and the second end 22 of the main body 2 in a direction intersecting the axial direction (direction D1) of the main body 2. The communication hole 25 is located between the fan 3 and the rectifier 8 in the direction D1. In addition, the position of the lower end of the communication hole 25 in the first embodiment generally coincides with the position of the upper end of the rectifier 8 in the direction D1. In other words, the communication hole 25 is located between the fan 3 and a first rectifier 4 described later in the direction D1. In addition, the position of the lower end of the communication hole 25 generally coincides with the position of the upper end of the first rectifier 4 in the direction D1.

[0027] The fan 3 blows air that has flowed in through the first inlet 23 of the main body 2 toward the outlet 24 of the main body 2. The fan 3 is an electric axial flow fan that can rotate around a central rotation axis 30 of a rotor 31 that the fan 3 has. The fan 3 moves the air that has flowed into the fan housing 33 while rotating it in a spiral around the rotor 31, and can flow it downstream. The "downstream side" means the downstream side when viewed in the direction of air flow.

[0028] The fan 3 is disposed inside the main body 2. In the axial direction of the main body 2, the fan 3 is disposed closer to the first end 21 of the first end 21 and the second end 22 of the main body 2. In the axial direction of the main body 2, the distance between the fan 3 and the first inlet 23 is shorter than the distance between the fan 3 and the outlet 24. The fan 3 generates an airflow, which is a flow of gas.

[0029] The fan 3 includes a rotor (hub) 31, a plurality of (e.g., four) blades (rotor blades) 32, a fan housing 33, a motor 36, a motor mounting portion, and a plurality of (e.g., three) beam portions. The fan 3 is made of a material such as resin or metal.

[0030] The rotor 31 is rotatable around a central rotation axis 30. When viewed from the axial direction D2 of the fan 3, the outer edge of the rotor 31 is circular. In the first embodiment, the axial direction D2 of the fan 3 is aligned with the direction D1. The rotor 31 is disposed coaxially with the main body 2 inside the main body 2. "The rotor 31 is disposed coaxially with the main body 2" means that the rotor 31 is disposed such that the central rotation axis 30 of the rotor 31 overlaps with the central axis 20 of the main body 2. In the axial direction D2 of the fan 3, the length of the rotor 31 is shorter than the length of the main body 2. The axial direction D2 of the fan 3 is aligned along the central rotation axis 30. The rotor 31 is cylindrical with a bottom, having a cylindrical portion 311 and a bottom wall 312, and is disposed such that the bottom wall 312 faces the first inlet 23 of the main body 2. The rotor 31 has a boss 313 that protrudes from the center of the bottom wall 312 to the side opposite to the first inlet 23 of the main body 2.

[0031] The blades 32 are disposed between the rotor 31 and the fan housing 33 and rotate together with the rotor 31. The blades 32 are connected to the rotor 31 and protrude from the outer peripheral surface 316 of the rotor 31 toward the inner peripheral surface 27 of the main body 2. When viewed in the axial direction D2 of the fan 3, the blades 32 protrude radially from the rotor 31. When viewed in the axial direction D2 of the fan 3, each of the blades 32 is disposed such that a gap is formed between the blade 32 and the inner peripheral surface 333 of the fan housing 33. In other words, in the fan 3, a gap is formed between each of the blades 32 and the inner peripheral surface 333 of the fan housing 33. The blades 32 are disposed at equal intervals when viewed in the axial direction D2 of the fan 3. The term "equal intervals" as used herein does not necessarily mean that the blades are disposed at exactly the same intervals, but may also mean, for example, intervals within a predetermined error range with respect to a specified interval (e.g., ±10% of the specified interval). In each of the multiple blades 32, the first end 321 (see Figure 3A) on the first inlet 23 side is located forward of the second end 322 (see Figure 3A) on the outlet 24 side in the rotation direction D3 (see Figure 3A) of the rotor 31 of the fan 3.

[0032] The fan housing 33 rotatably houses the rotor 31 and the plurality of blades 32. The fan housing 33 is cylindrical. The outer diameter of the fan housing 33 is approximately the same as the inner diameter of the main body 2 (the diameter of the inner circumferential surface 27). In the fan 3, for example, the fan housing 33 is fixed to the main body 2.

[0033] The motor 36 drives the rotor 31 to rotate. More specifically, the motor 36 rotates the rotor 31 around the central axis of rotation 30 of the rotor 31. The motor 36 is, for example, a DC motor. The motor 36 is driven by the drive circuit described above. The motor 36 includes a motor body 361 and a rotary shaft 362 that partially protrudes from the motor body 361. In the motor 36, the rotary shaft 362 is connected to the rotor 31. The rotary shaft 362 of the motor 36 is fixed to a boss portion 313 of the rotor 31.

[0034] A motor body 361 of the motor 36 is attached to the motor attachment portion. When viewed from the axial direction D2 of the fan 3, the motor attachment portion is located inside the outer edge of the rotating body 31. However, this is not limiting, and for example, the entire motor attachment portion may overlap the entire rotating body 31.

[0035] A plurality of (for example, three) beams connect the motor mounting portion and the fan housing 33. The beams are arranged at equal intervals in a direction along the outer edge of the motor mounting portion.

[0036] The rectifier 8 is located between the fan 3 and the outlet 24 in the direction D1. As described above, the rectifier 8 divides the airflow into a first airflow and a second airflow. The rectifier 8 of the first embodiment includes a first rectifier 4 and a second rectifier 5.

[0037] The first rectifier 4 is located between the fan 3 and the outlet 24 in the direction D1. The first rectifier 4 redirects the swirling airflow F1 (see FIG. 3A) downstream of the fan 3. The first rectifier 4 redirects the swirling airflow F1 downstream of the fan 3 into an airflow F2 (see FIG. 3B) toward the center of the fan 3. The first rectifier 4 also forms a flow velocity distribution downstream of the first rectifier 4 in which the airflow speed in a third region is faster than the airflow speed in a fourth region. Here, the airflow speed is the speed in the direction D1. The third region is a region (inner region) between the central axis 20 of the main body 2 and the inner circumferential surface 27 of the main body 2 that is closer to the central axis 20, and the fourth region is a region (outer region) between the central axis 20 of the main body 2 and the inner circumferential surface 27 of the main body 2 that is closer to the inner circumferential surface 27.

[0038] The first rectifier 4 has a cylindrical tube portion 41 and a plurality of (for example, 12) fins .

[0039] The outer diameter of the tubular portion 41 is approximately the same as the inner diameter of the main body portion 2. The inner diameter of the tubular portion 41 is approximately the same as the inner diameter of the fan housing 33. The tubular portion 41 has a second inlet 411 for gas. In other words, the first rectifier 4 has the second inlet 411 for gas. In addition, the tubular portion 41 has a second outlet 412 for gas. The airflow flows into the interior of the tubular portion 41 from the second inlet 411. The airflow that flows in from the second inlet 411 travels inside the tubular portion 41 from the second inlet 411 toward the second outlet 412.

[0040] In a plan view along direction D1, each of the multiple fins 42 is arc-shaped. The multiple fins 42 protrude from an inner peripheral surface 413 of the cylindrical portion 41 toward the central axis 40 of the cylindrical portion 41 and are aligned in a direction along the inner circumference of the cylindrical portion 41. Each of the multiple fins 42 is connected to the other multiple fins 42 at a center portion 46 centered on the central axis 40. Each of the multiple fins 42 has, in direction D1, a first end 421 on the first inlet 23 side (second inlet 411 side) and a second end 422 on the outlet 24 side (second outlet 412 side).

[0041] Each of the multiple fins 42 is arranged parallel to the direction D1 between the inner circumferential surface 413 of the cylindrical portion 41 and the central axis of the cylindrical portion 41. In each of the multiple fins 42, the first end 421 and the second end 422 overlap when viewed from the direction D1.

[0042] The ends of the multiple fins 42 on the inner circumferential surface 413 side are arranged at equal intervals along the circumferential direction of the tubular portion 41. Here, "equal intervals" does not necessarily mean exactly the same intervals, but may also mean intervals within a predetermined error range (e.g., ±10% of the specified interval) with respect to a specified interval. The first rectifier 4 has multiple (e.g., 12) flow paths 45 surrounded by two adjacent fins 42 of the multiple fins 42 and the inner circumferential surface 413 of the tubular portion 41. When viewed from the direction D1, the width of the flow paths 45 in the circumferential direction of the tubular portion 41 narrows as the distance from the inner circumferential surface 413 of the tubular portion 41 approaches the central axis 40 of the tubular portion 41. The multiple flow paths 45 are part of the flow path 26.

[0043] In the direction D1, the length of each of the multiple fins 42 is the same as the length of the cylindrical portion 41. The length of each of the multiple fins 42 does not necessarily have to be the same as the length of the cylindrical portion 41, and may be longer or shorter than the cylindrical portion 41.

[0044] Each of the multiple fins 42 has a first surface 43 that intersects with the circumferential direction of the main body 2, and a second surface 44 that intersects with the circumferential direction of the main body 2 and is on the opposite side to the first surface 43. The first surface 43 is a surface located rearward in a direction along the rotation direction D3 of the rotating body 31 (see FIG. 3A), and the second surface 44 is a surface located forward in a direction along the rotation direction D3 of the rotating body 31. The first surface 43 is a concave curved surface. The second surface 44 is a convex curved surface.

[0045] The material of the first rectifier 4 is metal, but is not limited to this and may be resin.

[0046] The second rectifier 5 is located between the first rectifier 4 and the outlet 24 of the main body 2 in the direction D1. The second rectifier 5 aligns the direction of the airflow from the first inlet 23 toward the outlet 24. The second rectifier 5 adjusts the flow velocity distribution of the airflow from the first rectifier 4 downstream of the first rectifier 4.

[0047] The second rectifier 5 has a plurality of flow paths 55 along the direction D1. Each of the plurality of flow paths 55 has an inlet 551 on the side of the first rectifier 4 and an outlet 552 on the side of the outlet 24 of the main body 2. The inlet 551 of each of the plurality of flow paths 55 is a portion into which the airflow flowing out from the first rectifier 4 flows. The outlet 552 of each of the plurality of flow paths 55 is a portion into which the airflow flowing in from the inlet 551 flows out to the outside. In each of the plurality of flow paths 55, the inlet 551 and the outlet 552 have the same shape. In each of the plurality of flow paths 55, the inlet 551 and the outlet 552 have the same size. The plurality of flow paths 55 are a part of the flow path 26.

[0048] The second straightening device 5 includes a straightening grid 50 and a cylindrical tube portion 51 surrounding the straightening grid 50. The straightening grid 50 has a plurality of partition plate portions 56 that separate any two adjacent flow paths 55 from among a plurality of flow paths 55. Each of the plurality of partition plate portions 56 is arranged along direction D1. The straightening grid 50 has a honeycomb lattice shape. Here, in a plan view along direction D1, the inlet 551 and outlet 552 of each of the plurality of flow paths 55 are regular hexagonal. From another perspective, each of the plurality of flow paths 55 is shaped like a hexagonal pillar.

[0049] The outer diameter of the cylindrical portion 51 is approximately the same as the inner diameter of the main body portion 2. The second rectifier 5 is disposed inside the main body portion 2 so that the central axis of the cylindrical portion 51 coincides with the central axis 20 of the main body portion 2.

[0050] The material of the second rectifier 5 is resin, but is not limited to this and may be metal.

[0051] The supply device 7 is capable of supplying the functional component to be blown into the air to the airflow blown out from the outlet 24. More specifically, the supply device 7 has a generating unit 71, a connecting unit 72, and an applying unit 73.

[0052] The generating unit 71 generates a functional component. The generating unit 71 generates, for example, a mist containing the functional component. The generating unit 71 is configured to supply the functional component from a functional material containing the functional component. The functional material containing the functional component is, for example, a solution containing the functional component. The generating unit 71 of embodiment 1 is located outside the main body 2. In other words, the generating unit 71 of embodiment 1 is located outside the flow path 26. In the airflow blowing device 1 of embodiment 1, since the generating unit 71 is located outside the flow path 26, it is possible to prevent the generating unit 71 from obstructing the flow of the airflow.

[0053] The generator 71 includes, for example, an atomizer that atomizes a solution containing a functional ingredient, and an energy supply device that provides energy to the solution to atomize it in the atomizer. The energy supply device is, for example, an ultrasonic vibrator, but is not limited to this and may be, for example, a SAW (Surface Acoustic Wave) device. The generator 71 of the first embodiment is driven by a control device.

[0054] The connecting portion 72 connects the generating portion 71 and the providing portion 73. The connecting portion 72 in the first embodiment is cylindrical. The functional component generated in the generating portion 71 passes through the inside of the connecting portion 72 and moves to the providing portion 73.

[0055] The connecting portion 72 penetrates the communicating hole 25 and protrudes from the inner circumferential surface 27 of the main body portion 2 toward the central axis 20 of the main body portion 2 along the radial direction of the main body portion 2. The connecting portion 72 connects the generating portion 71 located outside the main body portion 2 and the imparting portion 73 located inside the main body portion 2.

[0056] The applying portion 73 is located between the fan 3 and the outlet 24 in the direction D1. More specifically, in the direction D1, the position of the lower end of the applying portion 73 roughly coincides with the position of the upper end of the first rectifier 4. The second inlet 411 of the first rectifier 4 has less turbulence in the airflow than the vicinity of the fan 3. Furthermore, the applying portion 73 is arranged to overlap with the center portion 46 of the first rectifier 4 (the center portion of the second inlet 411) in a plan view along the direction D1. The position of the center portion 46 of the first rectifier 4 is within the range obtained by projecting the first region R1 at the outlet 24 (predetermined position) along the direction D1.

[0057] The applying unit 73 applies the mist containing the functional ingredient generated by the generating unit 71 to the airflow. The applying unit 73 of the first embodiment applies the mist containing the functional ingredient to the airflow at the second inlet 411 of the first straightening device 4. The center of the second inlet 411 is subject to relatively little airflow turbulence, and the center of the second inlet 411 is within the range obtained by projecting the first region R1 along the axial direction D2, so the applying unit 73 can stably apply the functional ingredient to the first airflow.

[0058] The functional component may be charged atomized water particles containing OH radicals. In this case, the supply device 7 may be, for example, an electrostatic atomizer that generates charged atomized water particles containing OH radicals. The charged atomized water particles are nanometer-sized ion particles. For example, an electrostatic atomizer can generate ion particles with a particle diameter of 5 nm to 20 nm by applying a high voltage to water in the air. The OH radicals in the charged atomized water particles are likely to act on various substances.

[0059] (3) Operation of the airflow blower In the airflow blowing device 1, the rotor 31 and the plurality of blades 32 of the fan 3 rotate in a predetermined rotation direction D3 (see FIG. 3A), causing air to be drawn into the fan 3 from the first inlet 23 side of the main body 2, and generating an airflow F1 (see FIG. 3A) that swirls within the main body 2 along the inner circumferential surface 27 of the main body 2 on the downstream side of the fan 3. The swirling airflow F1 is an airflow that rotates in a three-dimensional spiral.

[0060] In the airflow blowing device 1, the airflow F1 generated downstream of the fan 3 and swirling near the inner circumferential surface 27 of the main body 2 along the inner circumferential surface 27 is redirected by the first rectifier 4 in a direction approaching the central axis 40 of the first rectifier 4. More specifically, in the first rectifier 4, the airflow F1 (see FIG. 3A) swirling along the inner circumferential surface 27 of the main body 2 collides with the fins 42, and is thereby redirected into an airflow F2 (see FIG. 3B) approaching the central axis 40 of the first rectifier 4. In other words, the first rectifier 4 collects the airflow F1 generated by the fan 3 and swirling along the inner circumferential surface 27 of the main body 2 toward the central axis 40 of the first rectifier 4, thereby forming a flow velocity distribution downstream of the first rectifier 4 in which the airflow speed in a third region is faster than the airflow speed in a fourth region. In short, in the airflow blowing device 1, the first rectifying device 4 can form a velocity distribution in which the airflow velocity on the inside is relatively fast and the airflow velocity on the outside is relatively slow.

[0061] Here, the airflow speed is the speed in the direction along direction D1. The third region is a region (inner region) between central axis 20 of main body 2 and inner circumferential surface 27 of main body 2 and close to central axis 20, and the fourth region is a region (outer region) between central axis 20 of main body 2 and inner circumferential surface 27 of main body 2 and close to inner circumferential surface 27.

[0062] In the air blowing device 1, the second rectifying device 5 downstream of the first rectifying device 4 rectifies the direction of the airflow from the first rectifying device 4 side in the direction D1.

[0063] In the air blowing device 1, the airflow rectified by the second rectifying device 5 flows out from the outlet 24 of the main body 2.

[0064] In the airflow blowout device 1, when the fan 3 is driven, the airflow flowing downstream of the fan 3 is rectified by the first rectifier 4 and the second rectifier 5 and is blown out from the outlet 24 of the main body 2.

[0065] 5A shows the flow velocity distribution in the vicinity (predetermined position) of the outlet 24 of the main body 2 of the airflow blowing device 1. In the airflow blowing device 1 of the airflow blowing system 100 according to the first embodiment, the airflow rate of the fan 3 is 70 m 3 / h and the structural parameters are set as follows: Fig. 5B shows the flow velocity distribution in an air blowing device according to a comparative example that does not include the first and second flow straightening devices 4 and 5. <Structural parameters> Inner diameter of main body 2: 144 mm Number of fins 42 of the first rectifier 4: 12 Length of each fin 42 in direction D1: 50 mm Inlet 551 of each flow path 55 in the second rectifier 5: regular hexagon with a distance between opposite sides of 8 mm Outlets 552 of each flow path 55 in the second rectifier 5: regular hexagon with a distance between opposite sides of 8 mm Length of each flow path 55 in the second rectifier 5: 30 mm

[0066] 5A and 5B each show the flow velocity distribution in a cross section including the central axis 20 of the main body 2. In each of Figures 5A and 5B, the horizontal axis represents the distance from the central axis 20 of the main body 2, and the vertical axis represents the flow velocity. Note that with respect to the horizontal axis, the right side of the central axis 20 is "positive" and the left side is "negative (- sign)." The "positive" and "negative (- sign)" symbols are used to distinguish between the distance to an arbitrary position on the right side of the central axis 20 and the distance to an arbitrary position on the left side.

[0067] In the air blowing device according to the comparative example, as shown in Fig. 5B, the flow velocity increases with increasing distance from the center of the outlet 24. In contrast, the air blowing device 1 in the air blowing system 100 according to embodiment 1 achieves a flow velocity distribution in which the flow velocity in the inner region of the outlet 24 is faster than the flow velocity in the outer region, as shown in Fig. 5A. The air blowing device 1 can blow out a double jet flow including a first jet flow (first airflow) ejected from the inner region of the outlet 24 and a second jet flow (second airflow) ejected from the outer region of the outlet 24.

[0068] As described above, the flow velocity of the first airflow is equal to or greater than a predetermined value near the outlet 24. On the other hand, the flow velocity of the second airflow is less than a predetermined value near the outlet 24. The predetermined value is, for example, 1.2 m / s. In the flow velocity distribution shown in FIG. 5A, the flow velocity is equal to or greater than 1.2 m / s in a region within a distance of ±50 mm from the central axis 20 of the main body 2. Therefore, the first region R1 through which the first airflow passes is circular, with a radius of 50 mm and centered on the central axis 20 of the main body 2.

[0069] (4) Variations The first embodiment is merely one example of various embodiments of the present disclosure, and various modifications can be made to the first embodiment depending on the design and the like as long as the object of the present disclosure can be achieved.

[0070] Below, we will list some modified examples of embodiment 1. The modified examples described below can be applied in appropriate combination with embodiment 1.

[0071] The supply device 7 may transport the mist containing the functional ingredients into the main body 2 by attracting the mist containing the functional ingredients into the airflow within the main body 2, or may be equipped with a fan that sends the mist containing the functional ingredients into the main body 2.

[0072] Furthermore, in the supply device 7, the generator 71 may have a plurality of atomizing units that atomize solutions containing different functional components. In this case, the airflow blowing system 100 can change the functional component to be supplied to the airflow (first airflow) blown out from the outlet 24 by controlling the generator 71 with the control device.

[0073] For example, each of the multiple fins 42 does not necessarily have to have the entire first end 421 and the entire second end 422 overlapped when viewed from direction D1, but may have at least a part of the first end 421 and at least a part of the second end 422 overlapped. Furthermore, each of the multiple fins 42 may have a configuration in which the first end 421 and the second end 422 do not overlap when viewed from direction D1.

[0074] Furthermore, in the second straightening device 5, the straightening grid 50 is not limited to a honeycomb grid, but may be, for example, a square grid or a triangular grid.

[0075] The second straightening device 5 is not limited to the straightening grid 50 described above, but may be a straightening grid in the form of a bundle of a plurality of (e.g., 19) thin tubes, or may be a perforated plate (e.g., punched metal). Each of the thin tubes has a flow path 55. The perforated plate has a plurality of through holes that form the plurality of flow paths 55.

[0076] In the airflow blowing device 1, the main body 2 may also serve as the fan housing 33 of the fan 3. In the airflow blowing device 1, the main body 2 may also serve as the tubular portion 41 of the first rectifier device 4. In the airflow blowing device 1, the main body 2 may also serve as the tubular portion 51 of the second rectifier device 5.

[0077] Furthermore, the main body 2 only needs to have the first inlet 23 at the first end 21 and the outlet 24 at the second end 22, and the shape of the main body 2 is not limited to a cylindrical shape.

[0078] The air blowing device 1 may be embedded in a ceiling material so that the outlet 24 of the main body 2 faces the target space. The main body 2 may be attached to a wall or a stand.

[0079] The airflow blowing device 1 may also be configured so that air from an air conditioning facility on the upstream side flows into the first inlet 23 of the main body 2. The air conditioning facility is, for example, a blower, but is not limited to this and may also be, for example, a ventilation device, an air conditioner, an air supply cabinet fan, or an air conditioning system equipped with a blower and a heat exchanger.

[0080] The applying portion 73 may be arranged so as not to overlap with the center portion 46 of the first rectifier 4 in a plan view along the direction D1. The applying portion 73 may be arranged within a range obtained by projecting the first region R1 in the predetermined region (outlet 24) along the direction D1.

[0081] The connecting portion 72 may have a passage for the active ingredient that continues from the generating portion 71 to the communication hole 25 on the outside of the main body portion 2 .

[0082] The position of the lower end of the communication hole 25 does not have to generally coincide with the position of the upper end of the first rectifier 4. Furthermore, the connecting portion 72 may be inclined with respect to the radial direction of the main body 2 in a plan view along the radial direction of the main body 2. Furthermore, the connecting portion 72 may be curved rather than linear. In other words, as long as the imparting portion 73 is configured to impart a functional component to the airflow at the second inlet 411 of the first rectifier 4, the position of the communication hole 25 and the protruding direction and shape of the connecting portion 72 can be changed as appropriate.

[0083] (Embodiment 2) The airflow blowing device 1 of embodiment 2 differs from the airflow blowing device 1 of embodiment 1 in that the application section 73 releases the functional component toward the inlet 613 of the third straightening device 6 described below, thereby applying the functional component to the airflow at the outlet 614 of the third straightening device 6.

[0084] The air blowing device 1 according to the second embodiment will be described below with reference to FIG.

[0085] As shown in FIG. 6, the airflow rectifying section 8 of the air blowing device 1 of the second embodiment further includes a third airflow rectifying device 6 in addition to the first airflow rectifying device 4 and the second airflow rectifying device 5 .

[0086] The third flow straightener 6 is located between the first flow straightener 4 and the second flow straightener 5 in the direction D1. The third flow straightener 6 has an inner cylindrical body 61 having a flow path 62 with a circular cross-sectional shape. The flow path 62 is a part of the flow path 26.

[0087] The inner cylinder 61 has a first end 611 and a second end 612. The inner cylinder 61 has a circular inlet 613 at the first end 611 and a circular outlet 614 at the second end 612. The inlet 613 is an inlet through which gas flows in. The outlet 614 is an outlet through which gas flows out. The diameter of the outlet 614 is smaller than the diameter of the inlet 613. The outer diameter of the inner cylinder 61 is smaller than the inner diameter of the main body 2. Therefore, the flow path cross-sectional area of ​​the inner cylinder 61 is smaller than the flow path cross-sectional area of ​​the main body 2. The inner and outer diameters of the inner cylinder 61 decrease from the inlet 613 to the outlet 614 in the direction D1. The inner cylinder 61 is disposed coaxially inside the main body 2 so that the inlet 613 is located on the first rectifier 4 side and the outlet 614 is located on the second rectifier 5 side in the direction D1. The material of the inner cylinder 61 is, for example, but not limited to, metal or resin. The third rectifier 6 has a plurality of attachment portions for attaching the inner cylinder 61 to the main body 2.

[0088] The third rectifier 6 functions as a restrictor that rectifies the airflow so as to increase the airflow speed in the third region downstream of the first rectifier 4 and decrease the airflow speed in the fourth region. By including the third rectifier 6, the airflow blowing device 1 can increase the airflow speed in the inner region of the outlet 24 and decrease the airflow speed in the outer region compared to a case where the third rectifier 6 is not included, thereby increasing the difference in flow speed between the inner region and the outer region and improving the directionality of the airflow blown out from the outlet 24.

[0089] The communication hole 25 of the second embodiment is located between the first rectifier 4 and the third rectifier 6 in the direction D1. In addition, the position of the lower end of the communication hole 25 of the first embodiment is generally aligned with the position of the first end 611 of the third rectifier 6 in the direction D1.

[0090] The connecting portion 72 of the second embodiment passes through the communication hole 25 and protrudes from the inner circumferential surface 27 of the main body 2 toward the inlet 613 of the inner cylindrical body 61 along the radial direction of the main body 2 .

[0091] The applying portion 73 is located between the first rectifier 4 and the third rectifier 6 in the direction D1. More specifically, in the direction D1, the position of the lower end of the applying portion 73 roughly coincides with the position of the first end 611 of the inner cylindrical body 61. Furthermore, the applying portion 73 is arranged so as to overlap with the first end 611 of the inner cylindrical body 61 in a plan view along the direction D1.

[0092] The imparting section 73 of the second embodiment imparts the functional ingredient to the airflow at the outlet 614 of the third rectifier 6 (inner cylinder 61) by releasing the functional ingredient toward the inlet 613 of the third rectifier 6 (inner cylinder 61). In other words, the section from the inlet 613 to the outlet 614 of the inner cylinder 61 functions as a passage for transporting the functional ingredient. Furthermore, the outlet 614 of the inner cylinder 61 functions as an imparting section (releasing section) that imparts the functional ingredient to the airflow. In other words, the third rectifier 6 functions as a part of the supplying device 7, and it can be said that the third rectifier 6 (rectifying section 8) and the supplying device 7 are integrally formed.

[0093] The position of the outlet 614 of the inner cylinder 61 is within the range obtained by projecting the first region R1 at the outlet 24 (predetermined position) along the direction D1. The applying portion 73 applies the functional ingredient to the airflow at the outlet 614, which has a smaller diameter than the inlet 613, so that the functional ingredient can be more efficiently retained in the first airflow. Furthermore, because the applying portion 73 is arranged to overlap the first end 611 of the inner cylinder 61 in a plan view along the direction D1, the applying portion 73 and the connecting portion 72 are less likely to block the airflow than when the applying portion 73 is arranged near the central axis 40.

[0094] The position of the applying portion 73 may be located inside the inner circumferential surface of the first end 611 of the inner cylindrical body 61 in a plan view along the direction D1.

[0095] The inner cylindrical body 61 of the third flow straightening device 6 may include a tapered portion where the inner diameter and outer diameter each gradually change, and a cylindrical portion where the inner diameter and outer diameter each are constant.

[0096] The various configurations (including modified examples) described in the second embodiment can be adopted in appropriate combination with the various configurations (including modified examples) described in the first embodiment.

[0097] (Embodiment 3) The air blowing device 1 according to the third embodiment differs from the air blowing device 1 according to the first embodiment in that an imparting section 73 imparts a functional component to the airflow between a second rectifying device 5 and an outlet 24, which will be described later.

[0098] Hereinafter, the air blowing device 1 according to the third embodiment will be described with reference to FIG.

[0099] As shown in FIG. 7, the airflow rectifying section 8 of the air blowing device 1 of the third embodiment has a first airflow rectifying device 4 and a second airflow rectifying device 5.

[0100] The communication hole 25 of the third embodiment is located between the second flow straightening device 5 and the outlet 24 in the direction D1.

[0101] The connecting portion 72 passes through the communication hole 25 and protrudes radially from the inner circumferential surface 27 of the main body 2 toward the central axis 20 of the main body 2 .

[0102] The applying portion 73 is located between the first rectifier 4 and the outlet 24 in the direction D1. In addition, the applying portion 73 is arranged so as to overlap with the center portion 46 of the first rectifier 4 in a plan view along the direction D1. The position of the center portion 46 of the first rectifier 4 is within the range obtained by projecting the first region R1 at the outlet 24 (predetermined position) along the direction D1.

[0103] The applying unit 73 applies the mist containing the functional component generated by the generating unit 71 to the airflow. The applying unit 73 of the third embodiment applies the mist containing the functional component to the airflow between the second rectifier 5 and the outlet 24. More specifically, the applying unit 73 applies the mist containing the functional component to the airflow in the direction D1 between the outlet 552 of the second rectifier 5 and the second end 22 of the main body 2. In the airflow blowing device 1 of the third embodiment, the applying unit 73 applies the functional component to the airflow downstream of the second rectifier 5 (rectifier 8), thereby reducing adhesion of the functional component applied to the airflow to the rectifier 8 or the main body 2.

[0104] The various configurations described in the third embodiment can be adopted in appropriate combination with the various configurations (including modified examples) described in the first and second embodiments.

[0105] (Embodiment 4) The air blowing device 1 according to the fourth embodiment differs from the air blowing device 1 according to the first embodiment in that the applying section 73 is formed integrally with the rectifying section 8.

[0106] The air blowing device 1 according to the fourth embodiment will be described below with reference to FIGS.

[0107] As shown in FIG. 8, the airflow rectifying section 8 of the air blowing device 1 of the fourth embodiment has a first airflow rectifying device 4 and a second airflow rectifying device 5.

[0108] The second rectifier 5 of the fourth embodiment has a passage portion 57 formed to block the flow path 26. The passage portion 57 protrudes from the end of the cylindrical portion 51 in the radial direction of the cylindrical portion 51 to near the central axis 20 of the main body portion 2. The passage portion 57 has a first wall 571, a second wall 572, a third wall 573, and a discharge portion 574. The passage portion 57 also has an internal space Sp1 surrounded by the first wall 571, the second wall 572, the third wall 573, the discharge portion 574, and the plurality of partition plate portions 56.

[0109] The first wall 571 covers a portion of the first end 511, which is the upstream end of the tubular portion 51. In other words, the first wall 571 blocks a portion of the flow path 26. In a plan view along the direction D1, the first wall 571 protrudes from the end of the tubular portion 51 along the radial direction of the tubular portion 51 to near the central axis 20 of the main body 2. The first wall 571 is shaped like a rectangular plate.

[0110] The second wall 572 covers a portion of the second end 512, which is the downstream end of the tubular portion 51. In other words, the second wall 572 blocks a portion of the flow path 26. In a plan view along the direction D1, the second wall 572 protrudes from the end of the tubular portion 51 along the radial direction of the tubular portion 51 to near the central axis 20 of the main body 2. The second wall 572 is shaped like a rectangular plate.

[0111] The first wall 571 and the second wall 572 face each other in the direction D1. The first wall 571 and the second wall 572 do not overlap with the first rectifier 46 in a plan view along the direction D1. As shown in FIG. 9, the positions of the ends of the first wall 571 and the second wall 572 on the central axis 40 side are within a range in which the first region R1 at the outlet 24 (predetermined position) is projected along the direction D1. The dashed-dotted line L1 in FIG. 9 indicates the range in which the first region R1 at the outlet 24 (predetermined position) is projected along the direction D1.

[0112] The third wall 573 shown in Fig. 8 protrudes along direction D1 from the end of the first wall 571 on the central axis 40 side toward the end of the second wall 572 on the central axis 40 side. The third wall 573 is formed in a plate shape. As shown in Fig. 8, the length of the third wall 573 in direction D1 is shorter than the length of the multiple partition plate portions 56 in direction D1. The third wall 573 is located within a range obtained by projecting the first region R1 at the outlet 24 (predetermined position) along direction D1.

[0113] The discharge portion 574 connects the internal space Sp1 of the passage portion 57 and the flow path 55 (flow path 26). The discharge portion 574 of the fourth embodiment is a gap formed between the downstream end (lower end) of the third wall 573 and the second wall 572. The discharge portion 574 is located within a range obtained by projecting the first region R1 at the outlet 24 (predetermined position) along the direction D1.

[0114] The internal space Sp1 is a space located downstream of the first wall 571. More specifically, the internal space Sp1 in embodiment 1 is a space sandwiched between the first wall 571 and the second wall 572 in the direction D1. In other words, the first wall 571 and the second wall 572 face each other in the direction D1 with the internal space Sp1 interposed therebetween. The internal space Sp1 is a space formed by the first wall 571 blocking the flow path 26, and is not a part of the gas flow path 26.

[0115] The communication hole 25 of the fourth embodiment connects the internal space Sp1 with the outside of the main body portion 2. The communication hole 25 of the fourth embodiment overlaps with the internal space Sp1 and the discharge portion 574 in a plan view along the radial direction of the tubular portion 51.

[0116] The connecting portion 72 of the fourth embodiment connects the generating portion 71 provided outside the main body portion 2 and the internal space Sp1 of the passage portion 57. In other words, the connecting portion 72 connects the generating portion 71 provided outside the main body portion 2 and the applying portion 73 provided in the internal space Sp1 of the passage portion 57.

[0117] The applying unit 73 of the fourth embodiment releases the functional ingredient into the internal space Sp1 of the passage 57. The functional ingredient released into the internal space Sp1 is released from the releasing unit 574 to the flow path 55. That is, the applying unit 73 releases the functional ingredient into the internal space Sp1 of the passage 57, thereby applying the functional ingredient to the airflow at the releasing unit 574.

[0118] According to the airflow blowing device 1 of embodiment 4, the applying portion 73 applies a functional component to the airflow through the passage portion 57 of the second straightening device 5, so there is no need to arrange the applying portion 73 within the range obtained by projecting the first region R1 at the predetermined position (outlet 24) along the direction D1. Since there is no need to arrange the applying portion 73 within the range obtained by projecting the first region R1 at the predetermined position (outlet 24) along the direction D1, it is possible to shorten the length of the connecting portion 72, for example.

[0119] Furthermore, the release section 574 of the second rectifier 5 (passage section 57) imparts the functional component to the gas, and therefore functions as a part of the supply device 7. Therefore, the supply device 7 of the fourth embodiment can be said to be formed integrally with the second rectifier 5.

[0120] Since the supply device 7 is formed integrally with the second rectifier 5 (rectifier section 8), it is possible to reduce the number of parts and the size. Furthermore, since the second rectifier 5 near the outlet 24 and the supply device 7 are formed integrally, the functional component added to the gas is likely to remain in the first airflow.

[0121] The third wall 573 may be a part of the plurality of partition plate portions 56. When the third wall 573 is a part of the plurality of partition plate portions 56, for example, the discharge portion 574 is formed by forming a hole in the third wall 573 (a part of the plurality of partition plate portions 56).

[0122] The various configurations described in the fourth embodiment can be adopted in appropriate combination with the various configurations (including modified examples) described in the first to third embodiments.

[0123] (Embodiment 5) The air blowing device 1 according to the fifth embodiment differs from the air blowing device 1 according to the first embodiment in that the applying section 73 generates a functional component.

[0124] Hereinafter, the air blowing device 1 according to the fifth embodiment will be described with reference to FIG.

[0125] 10, the supply device 7 according to the fifth embodiment is configured with an application unit 73. The application unit 73 according to the fifth embodiment is disposed at the upper end of the central portion 46 of the first rectifier 4. The application unit 73 is located within a range obtained by projecting the first region R1 at a predetermined position (the outlet 24) along the direction D1, and within a range from the second inlet 411 to the outlet 24.

[0126] The application unit 73 of the fifth embodiment also functions as the generation unit 71 that generates the functional component. The application unit 73 is formed of a porous material containing a raw material (functional material) that releases the functional component. In this disclosure, the term "porous material" refers to a material having many fine pores. The functional material of the fifth embodiment releases the functional component into the gas by volatilization or evaporation.

[0127] The airflow blowing device 1 of embodiment 5 does not need to have, for example, a connecting part 72 (see FIG. 1) that connects the applying part 73 and the generating part 71 that generates the functional component, and therefore, for example, it is possible to prevent the connecting part 72 from obstructing the flow of the airflow. Furthermore, the supplying device 7 of embodiment 5 is formed of a porous material containing a raw material that releases the functional component, and does not need to be connected to, for example, a power source or a control device, so that the number of parts and size of the supplying device 7 can be reduced.

[0128] The various configurations described in the fifth embodiment can be adopted in appropriate combination with the various configurations (including modified examples) described in the first to fourth embodiments.

[0129] (Embodiment 6) The air blowing device 1 according to the sixth embodiment differs from the air blowing device 1 according to the fifth embodiment in that the imparting section 73 having the function of generating the functional component is formed integrally with the second straightening device 5.

[0130] The air blowing device 1 according to the sixth embodiment will be described below with reference to FIG.

[0131] Fig. 11 is a plan view of the second rectifier 5 as viewed in direction D1. As shown in Fig. 11, the plurality of partition plate portions 56 of the second rectifier 5 according to embodiment 6 include a plurality of partition plate portions 56a. The dot-hatched portions in Fig. 11 indicate the plurality of partition plate portions 56a included in the plurality of partition plate portions 56.

[0132] 11, the partition plate portions 56a are positioned inside the annular dashed dotted line L1. That is, the partition plate portions 56a are positioned within a range in which the first region R1 at the outlet 24 (predetermined position) is projected along the direction D1.

[0133] The partitions 56a are made of a porous material containing a raw material (functional material) that releases a functional component. The functional material of the fifth embodiment releases the functional component into the gas by volatilization or evaporation. That is, the partitions 56a function as a generator 71 that generates the functional component and an imparting unit 73 that imparts the functional component to the airflow.

[0134] In the airflow blowing device 1 of the sixth embodiment, a part of the second straightening device 5 near the outlet 24 (the plurality of partition plate portions 56a) functions as an imparting portion, so that the functional component tends to remain in the first airflow.

[0135] The various configurations described in the sixth embodiment can be adopted in appropriate combination with the various configurations (including modified examples) described in the first to fifth embodiments.

[0136] (summary) As described above, the air blowing device (1) according to the first aspect includes a main body (2), a fan (3), a rectifying section (8), and a directing section (73). The main body (2) has a first gas inlet (23), a gas outlet (24), and a flow path (26). The first inlet (23) is provided at a first end (21) of the main body (2). The outlet (24) is provided at a second end (22) of the main body (2). The flow path (26) connects the first inlet (23) and the outlet (24). The cross section of the flow path (26) is circular. The fan (3) is disposed inside the main body (2). The fan (3) generates an air current, which is a gas flow. The rectifying section (8) is located between the fan (3) and the outlet (24) in a direction (D1) along the direction from the first inlet (23) toward the outlet (24). The rectifying section (8) has a second inlet (411) for gas. The imparting section (73) releases a functional component to impart the functional component to the airflow. The rectifying section (8) divides the airflow into a first airflow and a second airflow. A first region (R1) through which the first airflow passes is located inside a second region (R2) through which the second airflow passes, in a plan view along the direction (D1). The flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position (outlet 24). The flow velocity of the second airflow is less than a predetermined value at a predetermined position. The imparting section (73) imparts a functional component to the airflow within a range obtained by projecting the first region (R1) at a predetermined position along the direction (D1) and within a range from the second inlet (411) to the outlet (24).

[0137] According to this embodiment, the functional component is imparted to the airflow within the range from the second inlet (411) to the outlet (24) and within the range of the first region (R1) projected along the direction (D1), so that the functional component can be stably imparted to the first airflow. Because the first airflow is less likely to diffuse, the diffusion of the functional component can be suppressed, and the functional component can be efficiently delivered to the target region.

[0138] In the air blowing device (1) according to the second aspect, in the first aspect, the rectifying section (8) has a first rectifying device (4) and a second rectifying device (5). The first rectifying device (4) has a second inlet (411). The first rectifying device (4) turns the airflow. The second rectifying device (5) is located between the first rectifying device (4) and the outlet (24) in the direction (D1). The second rectifying device (5) aligns the direction of the airflow from the first inlet (23) toward the outlet (24). The imparting section (73) imparts a functional component to the airflow at the second inlet (411).

[0139] According to this embodiment, the functional component is imparted to the airflow at the second inlet (411), so that the imparted functional component is likely to remain in the first airflow.

[0140] In the air blowing device (1) according to the third aspect, in the first aspect, the rectifying section (8) has a first rectifying device (4), a second rectifying device (5), and a third rectifying device (6). The first rectifying device (4) has a second inlet (411). The first rectifying device (4) turns the airflow. The second rectifying device (5) is located between the first rectifying device (4) and the outlet (24) in the direction (D1). The second rectifying device (5) aligns the direction of the airflow from the first inlet (23) toward the outlet (24). The third rectifying device (6) is located between the first rectifying device (4) and the second rectifying device (5) in the direction (D1). The third rectifying device (6) has a flow path (62) having a circular cross section. The third rectifier (6) has a circular inlet (613) through which the gas flows in and a circular outlet (614) through which the gas flows out. The diameter of the outlet (614) is smaller than the diameter of the inlet. The imparting section (73) imparts the functional component to the airflow at the outlet (614) of the third rectifier (6) by releasing the functional component toward the inlet (613) of the third rectifier (6).

[0141] According to this embodiment, the imparting portion (73) imparts the functional ingredient to the airflow at the outlet (614) which has a smaller diameter than the inlet (613), thereby making it possible to more efficiently cause the functional ingredient to remain in the first airflow.

[0142] In the air blowing device (1) according to the fourth aspect, in the first aspect, the rectifying section (8) has a first rectifying device (4) and a second rectifying device (5). The first rectifying device (4) has a second inlet (411). The first rectifying device (4) turns the airflow. The second rectifying device (5) is located between the first rectifying device (4) and the outlet (24) in the direction (D1). The second rectifying device (5) aligns the direction of the airflow from the first inlet (23) toward the outlet (24). The imparting section (73) imparts a functional component to the airflow between the second rectifying device (5) and the outlet (24).

[0143] According to this embodiment, it is possible to reduce adhesion of the functional component added to the airflow to the airflow rectifying portion (8) and the main body portion (2).

[0144] In the air blowout device (1) according to the fifth aspect, in the first aspect, the rectifying section (8) has a first rectifying device (4) and a second rectifying device (5). The first rectifying device (4) has a second inlet (411). The first rectifying device (4) turns the airflow. The second rectifying device (5) is located between the first rectifying device (4) and the outlet (24) in the direction (D1). The second rectifying device (5) aligns the direction of the airflow from the first inlet (23) toward the outlet (24). The second rectifying device (5) has a passage portion (57) formed so as to block the flow path (26). The passage portion (57) has a discharge portion (574) connecting an internal space (Sp1) of the passage portion (57) to the flow path (26; 55). The release portion (574) is located within a range obtained by projecting the first region (R1) at the predetermined position (outlet 24) along the direction (D1). The imparting portion (73) imparts the functional component to the airflow at the release portion (574) by releasing the functional component into the internal space (Sp1) of the passage portion (57).

[0145] According to this embodiment, the imparting portion (73) imparts the functional component to the airflow through the passage portion (57) of the second straightening device (5), so there is no need to position the imparting portion (73) within the range in which the first region (R1) at the predetermined position (outlet 24) is projected along the direction (D1).

[0146] The air blowing device (1) according to a sixth aspect is the air blowing device (1) according to any one of the first to fifth aspects, further including a generating section (71) and a connecting section (72). The generating section (71) generates a functional component. The connecting section (72) connects the imparting section (73) and the generating section (71). The generating section (71) is located outside the flow path (26).

[0147] According to this embodiment, the generation section (71) is located outside the flow path (26), and therefore, the connection section (72) can be prevented from obstructing the flow of the air current.

[0148] In the air blowing device (1) according to a seventh aspect, in any one of the first to fifth aspects, the applying section (73) is located within a range obtained by projecting the first region (R1) at a predetermined position (outlet 24) along the direction (D1) and within a range from the second inlet (411) to the outlet (24). The applying section (73) generates a functional component.

[0149] According to this aspect, since the imparting section (73) itself can generate the functional component, there is no need to provide a connecting section (72) that connects the imparting section (73) with the generating section that generates the functional component, and therefore, for example, the connecting section (72) can be prevented from obstructing the flow of air.

[0150] In the air blowing device (1) according to the eighth aspect, in the seventh aspect, the application part (73) is formed of a porous material containing a raw material that releases a functional component.

[0151] According to this embodiment, there is no need to provide a power source or a control device for releasing the functional component, and therefore the number of parts and size of the application section (73) can be reduced.

[0152] The configurations other than those of the first aspect are not essential for the air current blowing device (1) and can be omitted as appropriate. [Explanation of symbols]

[0153] 1 Airflow blowing device 2 Main body 21 First end 22 Second end 23 First inlet 24 Outlet 26 Flow path 3 Fan 4 First rectifying device 411 Second inlet 5 Second rectifying device 55 Flow path 56b Partition plate part (application part) 57 Passage part 574 Discharge part 6 Third rectifying device 613 Inlet 614 Outlet 62 Flow path 71 Generation part 72 Connection part 73 Application part 8 Rectifying part D1 Direction R1 First region R2 Second region Sp1 Internal space

Claims

1. a main body portion having a first inlet for gas at a first end and an outlet for the gas at a second end, the main body portion having a flow path connecting the first inlet and the outlet, the flow path having a circular cross section; a fan disposed inside the main body and configured to generate an airflow that is the gas flow; a straightening unit having a second inlet for the gas and positioned between the fan and the outlet in a direction from the first inlet toward the outlet; an imparting unit that releases a functional component to impart the functional component to the airflow; Equipped with The airflow rectifying unit divides the airflow into a first airflow and a second airflow, a first region through which the first airflow passes is located more inward than a second region through which the second airflow passes in a plan view along the direction; a flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position; a flow velocity of the second airflow at the predetermined position is less than the predetermined value; the applying unit applies the functional component to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet, The rectifying unit is a first straightening device having the second inlet and turning the airflow; a second rectifier located between the first rectifier and the outlet in the direction, and aligning the direction of the airflow from the first inlet toward the outlet; and the first straightening device redirects the swirling airflow downstream of the fan into an airflow directed toward the center of the fan, forming a flow velocity distribution in which the velocity of the first airflow is faster than the velocity of the second airflow downstream of the first straightening device. Airflow blowing device.

2. The imparting section imparts the functional component to the airflow at the second inlet. The air blowing device according to claim 1 .

3. A main body having a first inlet for gas at a first end, an outlet for said gas at a second end, a flow path connecting said first inlet and said outlet, said flow path having a circular cross section; a fan disposed inside the main body and configured to generate an airflow that is the gas flow; a straightening unit having a second inlet for the gas and positioned between the fan and the outlet in a direction from the first inlet toward the outlet; an imparting unit that releases a functional component to impart the functional component to the airflow; Equipped with The airflow rectifying unit divides the airflow into a first airflow and a second airflow, a first region through which the first airflow passes is located more inward than a second region through which the second airflow passes in a plan view along the direction; a flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position; a flow velocity of the second airflow at the predetermined position is less than the predetermined value; the applying unit applies the functional component to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet, The rectifying unit is a first straightening device having the second inlet and turning the airflow; a second rectifier located between the first rectifier and the outlet in the direction, and aligning the direction of the airflow from the first inlet toward the outlet; a third rectifier located between the first rectifier and the second rectifier in the direction, the third rectifier having a flow path with a circular cross section; and the third rectifier has a circular inlet through which the gas flows and a circular outlet through which the gas flows, the diameter of the outlet is smaller than the diameter of the inlet; the imparting unit imparts the functional ingredient to the airflow at the outlet of the third rectifier by releasing the functional ingredient toward the inlet of the third rectifier. Airflow blowing device.

4. A main body having a first inlet for gas at a first end, an outlet for said gas at a second end, a flow path connecting said first inlet and said outlet, said flow path having a circular cross section; a fan disposed inside the main body and configured to generate an airflow that is the gas flow; a straightening unit having a second inlet for the gas and positioned between the fan and the outlet in a direction from the first inlet toward the outlet; an imparting unit that releases a functional component to impart the functional component to the airflow; Equipped with The airflow rectifying unit divides the airflow into a first airflow and a second airflow, a first region through which the first airflow passes is located more inward than a second region through which the second airflow passes in a plan view along the direction; a flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position; a flow velocity of the second airflow at the predetermined position is less than the predetermined value; the applying unit applies the functional component to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet, The rectifying unit is a first straightening device having the second inlet and turning the airflow; a second rectifier located between the first rectifier and the outlet in the direction, and aligning the direction of the airflow from the first inlet toward the outlet; and The imparting unit imparts the functional component to the airflow between the second rectifying device and the outlet. Airflow blowing device.

5. A main body having a first inlet for gas at a first end, an outlet for said gas at a second end, a flow path connecting said first inlet and said outlet, said flow path having a circular cross section; a fan disposed inside the main body and configured to generate an airflow that is the gas flow; a straightening unit having a second inlet for the gas and positioned between the fan and the outlet in a direction from the first inlet toward the outlet; an imparting unit that releases a functional component to impart the functional component to the airflow; Equipped with The airflow rectifying unit divides the airflow into a first airflow and a second airflow, a first region through which the first airflow passes is located more inward than a second region through which the second airflow passes in a plan view along the direction; a flow velocity of the first airflow is equal to or greater than a predetermined value at a predetermined position; a flow velocity of the second airflow at the predetermined position is less than the predetermined value; the applying unit applies the functional component to the airflow within a range obtained by projecting the first region at the predetermined position along the direction and within a range from the second inlet to the outlet, The rectifying unit is a first straightening device having the second inlet and turning the airflow; a second rectifier located between the first rectifier and the outlet in the direction, and aligning the direction of the airflow from the first inlet toward the outlet; and the second flow straightening device has a passage portion formed to block the flow path, the passage portion has a discharge portion that connects an internal space of the passage portion and the flow path, the emission section is located within a range obtained by projecting the first region at the predetermined position along the direction, The imparting section imparts the functional ingredient to the airflow at the discharging section by discharging the functional ingredient into the internal space of the passage section. Airflow blowing device.

6. A generation unit that generates the functional component; a connection unit that connects the granting unit and the generating unit; Further provided with The generation unit is located outside the flow path. The air blowing device according to any one of claims 1 to 5.

7. the application unit is located within a range in which the first region at the predetermined position is projected along the direction and within a range from the second inlet to the outlet, and generates the functional component. The air blowing device according to any one of claims 1 to 5.

8. The application part is formed of a porous material containing a raw material that releases the functional component. The air blowing device according to claim 7.

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