Flow path adjustment mechanism and fluid delivery device

Abstract

A flow path adjustment mechanism of a fluid delivery device is capable of adjusting the flow area of a fluid flowing by the driving of a driving body. The flow path adjustment mechanism includes a shielding portion. The shielding part can adjust shielding and opening of at least one part of the flow surface of the flow path observed from the flow direction of the fluid on the basis of the detection result of at least one of the driving state of the driving body and the state of the fluid in the flow path through which the fluid flows. In addition, the fluid delivery device is provided with the flow path adjusting mechanism and the circulation device. The circulation device causes the fluid to flow by being driven by the driving body.

Description

Technical Field

[0001] The present invention relates to a flow path regulating mechanism and a fluid delivery device. Background Art

[0002] Conventionally, an electronic device including a cooling target unit and a fan unit is known (for example, refer to International Publication No. 2018 / 084016).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: International Publication No. 2018 / 084016 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] However, in the aforementioned fan units, when the speed of the air supply fan decreases, there is a concern about a decrease in air supply efficiency. Furthermore, when multiple fan units are arranged in parallel and operated, as in International Publication No. 2018 / 084016, if the speed of the air supply fan in at least one fan unit decreases, the aforementioned decrease in air supply efficiency can easily occur due to the air supply fan with a decreased speed. Therefore, there is a concern about a decrease in overall air supply efficiency. Alternatively, there is a concern about backflow in the air supply fan with a decreased speed.

[0008] An object of the present invention is to suppress a decrease in fluid delivery efficiency.

[0009] Solutions to Problems

[0010] An exemplary flow path adjustment mechanism of the present invention is capable of adjusting the flow area of ​​a fluid flowing in response to a drive element. The flow path adjustment mechanism includes a shielding portion. The shielding portion is capable of adjusting the shielding or opening of at least a portion of the flow path's flow surface, as viewed from the flow direction of the fluid, based on a detection result of at least one of the drive state of the drive element and the state of the fluid in the flow path through which the fluid flows.

[0011] Furthermore, an exemplary fluid delivery device of the present invention includes the aforementioned flow path regulating mechanism and a flow device. The flow device causes the fluid to flow when driven by the driving body.

[0012] Effects of the Invention

[0013] According to the exemplary flow path regulating mechanism and fluid delivery device of the present invention, it is possible to suppress a decrease in fluid delivery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a cross-sectional view showing a schematic configuration example of a fluid delivery device.

[0015] Figure 2 This is a block diagram showing a functional configuration example of a fluid delivery device.

[0016] Figure 3 This is an external view showing another structural example of the fluid delivery device.

[0017] Figure 4A This is an external view showing a first example of the flow path adjustment mechanism.

[0018] Figure 4B This is an external view showing a second example of the flow path adjustment mechanism.

[0019] Figure 5A This is an external view showing a state in which the outflow port is closed in a modified example of the fluid delivery device.

[0020] Figure 5B This is an external view showing a modified example of the fluid delivery device in a state where the outflow port is opened.

[0021] Figure 5C It is an exploded perspective view of a fluid delivery device according to a modified example.

[0022] Figure 6 It is a cross-sectional view showing a configuration example of a stationary blade of a fluid delivery device according to a modified example, as viewed from the radial direction.

[0023] Figure 7 It is an external view showing another structural example of the fluid delivery device according to a modified example.

[0024] Figure 8 It is a cross-sectional view showing another structural example of a stationary blade of a fluid delivery device according to a modified example, as viewed from the radial direction. DETAILED DESCRIPTION

[0025] Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings.

[0026] In this specification, in the fluid delivery device 100, the direction parallel to the rotation axis J of the motor 12 is referred to as the "axial direction." The axial direction from the inlet 21 to the outlet 22 of the flow path 2 (described later) is referred to as the "one axial direction Da," and the direction from the outlet 22 to the inlet 21 is referred to as the "other axial direction Db." Furthermore, the direction orthogonal to a predetermined axis (e.g., the rotation axis J) is referred to as the "radial direction," and the direction of rotation centered on the predetermined axis (e.g., the rotation axis J) is referred to as the "circumferential direction." The radial direction approaching the predetermined axis is referred to as the "radially inward direction," and the direction away from the predetermined axis is referred to as the "radially outward direction."

[0027] In this specification, the term "annular" includes not only shapes that are continuous and uncut throughout the entire circumference around a predetermined axis (e.g., the rotation axis J), but also shapes that have one or more cuts in a portion of the entire area around the predetermined axis. Furthermore, it includes shapes that describe a closed curve around the predetermined axis on a curved surface that intersects the predetermined axis.

[0028] Furthermore, in the positional relationship between any of the directions, lines, and planes and any other, "parallel" includes not only a state in which the two do not intersect at all regardless of their extension, but also a state in which they are substantially parallel. Furthermore, "perpendicular" and "orthogonal" include not only a state in which the two intersect at 90 degrees, but also a state in which they are substantially perpendicular and a state in which they are substantially orthogonal, respectively. In other words, "parallel," "perpendicular," and "orthogonal" each include a state in which the positional relationship between the two has an angular deviation to the extent that does not deviate from the gist of the present invention.

[0029] In addition, these are for illustration only and are not intended to limit actual positional relationships, directions, names, etc.

[0030] <1. Fluid Delivery Device 100>

[0031] Figure 1 It is a cross-sectional view showing a schematic configuration example of the fluid delivery device 100 . Figure 2 1 is a block diagram showing a functional configuration example of the fluid delivery device 100. Figure 1 This is a cross section of the fluid delivery device 100 when viewed from the radial direction along an imaginary plane including the rotation axis J. Figure 2 , only the functional configuration example of the fluid delivery device 100 is shown, and therefore description of some components is omitted.

[0032] The fluid delivery device 100 generates a flow of fluid F, causing the fluid F to flow in the axial direction. In this embodiment, the fluid F is air, and the fluid delivery device 100 is an air blower. However, this is not limiting, and the fluid F may also be a gas other than air or a liquid.

[0033] The fluid delivery device 100 includes a fan device 1, a flow path 2, and a flow path adjustment mechanism 3. As will be described later, the fluid delivery device 100 can suppress a decrease in the delivery efficiency of the fluid F.

[0034] <1-1. Fan unit 1>

[0035] Fan device 1 includes impeller 11, motor 12, housing 13, ribs 14, substrate 15, detector 16, and fan controller 17. Fan device 1 is an example of a "circulation device" of the present invention, and drives impeller 11 to cause fluid F to flow.

[0036] The impeller 11 is an example of a "driving element" in the present invention and is rotatable about the rotation axis J. The impeller 11 includes an impeller base (not shown) and rotor blades 111. The impeller base is a radially extending plate. A plurality of rotor blades 111 extend radially outward from the radially outer end of the impeller base and are arranged in a circumferential direction relative to the rotation axis J.

[0037] The motor 12 is an example of a "drive unit" of the present invention, and drives the impeller 11 to rotate. As described above, the fan device 1 includes the motor 12. Specifically, the motor 12 includes a shaft 121. The shaft 121 is an axial component extending along the rotation axis J. The other axial end of the shaft 121 is connected to the rotation center of the impeller 11 (specifically, the impeller base). The shaft 121 can rotate with the impeller 11 around the rotation axis J in accordance with the rotation of the rotor (not shown) of the motor 12.

[0038] The housing 13 is cylindrical and extends axially, surrounding the impeller 11 and the motor 12. Specifically, the impeller 11 and the motor 12 are housed within the housing 13. The interior of the housing 13 functions as part of the flow path 2. The axial ends of the housing 13 are provided with openings that function as an inlet 131 and an outlet 132, described later. Furthermore, a portion of the flow path 2 is disposed between the radially outer side of the motor 12 and the inner circumferential surface (radially inner side) of the housing 13.

[0039] Preferably, the flow path 2 disposed within the fan device 1 is cylindrical in shape, extending axially from the inlet 131 side of the fluid F to the outlet 132 side. Furthermore, for example, the axial end of the flow path 2 is not provided with a recessed portion that is axially recessed from the axial end and opens on the radially inner side of the flow path 2. This allows, for example, the inner diameter of the flow path 2 disposed within the fan device 1 to be uniform throughout the axial direction. Consequently, the flow resistance of the fluid F flowing within the flow path 2 can be reduced.

[0040] The ribs 14 support the motor 12 on the housing 13, and a plurality of ribs 14 are arranged in the circumferential direction with the rotation axis J as a reference. The radial inner end portion of the rib 14 is connected to the radial outer side surface of the motor 12, and the radial outer end portion of the rib 14 is connected to the inner peripheral surface of the housing 13. In addition, each rib 14 is an example of the "first rib" of the present invention, extending at least radially inward from the inner peripheral surface of the flow path 2 and expanding in the axial direction. As described above, the fan device 1 has the ribs 14. In this embodiment, the ribs 14 function as stationary blades Sv to rectify the fluid F flowing in the flow path 2.

[0041] The substrate 15 is a plate-shaped structure extending in a direction intersecting the axial direction (e.g., radially) and is attached to one axial end of the motor 12. When viewed axially, the outer shape of the substrate 15 may be located inward of the outer shape of the motor 12 (particularly one axial end), or may be positioned at the same position as the outer shape of the motor 12 (particularly one axial end). However, this example does not exclude a configuration in which the outer shape of the substrate 15 is located outward of the outer shape of the motor 12 (particularly one axial end) when viewed axially.

[0042] Detection unit 16 is a sensor for detecting at least one of the driving state of impeller 11 and the state of fluid F in flow path 2, and outputs the detection result to fan control unit 17. Examples of the driving state of impeller 11 include the presence or absence of rotation, the direction of rotation, and the number of rotations per unit time of impeller 11. Examples of the state of fluid F include the temperature, flow direction, flow velocity, and axial pressure of fluid F. Thus, for example, the blocking or opening of the flow passage 2 can be adjusted based on the detection result of detection unit 16.

[0043] The detection unit 16 includes a first detection unit 161, a second detection unit 162 and a third detection unit (not shown). The first detection unit 161 is, for example, arranged on the side of the inlet 131 of the inner circumferential surface of the housing 13, preferably arranged on the other axial side Db than the impeller 11. The first detection unit 161 detects the state of the fluid F on the side of the inlet 131 closer to the impeller 11, and outputs it to the fan control unit 17. The second detection unit 162 is, for example, arranged on the axial side Da closer to the impeller 11, preferably arranged on the side of the outlet 132 of the inner circumferential surface of the housing 13. The second detection unit 162 detects the state of the fluid F on the side of the outlet 132 closer to the impeller 11, and outputs it to the fan control unit 17. The third detection unit is, for example, a sensor unit such as a Hall element or an encoder, which detects the driving state of the impeller 11 and outputs it to the fan control unit 17.

[0044] The fan control unit 17 is an example of a "circulation control unit" of the present invention, and controls the fan device 1 based on information and programs stored in a memory (not shown), which serves as a non-transitory storage medium. For example, the fan control unit 17 is mounted on the substrate 15 and controls the drive of the motor 12 (in other words, the rotation of the impeller 11) based on the detection results of the detection unit 16. Furthermore, the fan control unit 17 compares the first detection result of the first detection unit 161 with the first detection result of the second detection unit 162 and controls the drive of the motor 12 (the rotation of the impeller 11) based on the comparison result.

[0045] <1-2.Flow path 2>

[0046] The flow path 2 is a passage through which the fluid F flows. In this embodiment, it is formed by the internal space of the housing 13 and an opening 321 (described later) of the flow path regulating mechanism 3. An outflow port 22 is disposed at one axial end of the flow path 2, and an inflow port 21 is disposed at the other axial end of the flow path 2. The inflow port 21 is an opening through which the fluid F flows in, and the outflow port 22 is an opening through which the fluid F flows out.

[0047] <1-3. Flow Path Adjustment Mechanism 3>

[0048] Next, refer to Figures 1 to 4B , explaining the flow path regulating mechanism 3. Figure 3 1 is an external view showing another configuration example of the fluid delivery device 100 . Figure 4A 1 is an external view showing a first example of the flow path regulating mechanism 3 . Figure 4B : is an external view showing a second example of the flow path regulating mechanism 3. Figure 4A In FIG, the flow path adjustment mechanism 3 is arranged at the other axial end portion of the fan device 1 .

[0049] The flow path regulating mechanism 3 is capable of regulating the flow area of ​​the fluid F that circulates through the drive (rotation) of the impeller 11. In addition, as mentioned above, the impeller 11 is an example of a "driving body" of the present invention. In addition, the flow area here refers to the cross-sectional area of ​​the flow path 2 through which the fluid F can pass, as viewed from the axial direction. In addition, the flow surface refers to the cross-sectional area of ​​the flow path 2 through which the fluid F can pass, as viewed from the axial direction. In this embodiment, the flow path regulating mechanism 3 is arranged at the other axial end of the fan device 1 (on the side of the inlet 21 of the flow path 2). In this way, the amount and flow rate of the fluid F sucked into the flow path 2 by the fan device 1 can be regulated.

[0050] However, this is not limited to this example. Figure 1 As shown by the dotted line, the flow path adjustment mechanism 3a can also be arranged at one axial end of the fan device 1 (the outlet 132 side of the flow path 2). In this way, the amount and flow rate of the fluid F sent from the flow path 2 by the fan device 1 can be adjusted.

[0051] Alternatively, the flow path adjustment mechanisms 3 and 3 a may be respectively arranged at both the other axial end portion (the inlet 131 side) and the one axial end portion (the outlet 132 side) of the fan device 1 .

[0052] In addition, hereinafter, the flow path adjustment mechanisms 3 and 3 a may be collectively referred to as “flow path adjustment mechanisms 3 ”.

[0053] Alternatively, the flow path adjustment mechanism 3 may be arranged between a plurality of fan devices 1 connected in series. Figure 3In the embodiment, a plurality of fan devices 1 are connected in series in an axial direction parallel to the rotation axis J. A flow path adjustment mechanism 3 is disposed between the outlet 132 of the preceding fan device 1a and the inlet 131 of the succeeding fan device 1b. This allows adjustment of the flow path area of ​​the fluid F delivered from the preceding fan device 1a to the succeeding fan device 1b.

[0054] The flow path adjustment mechanism 3 includes a shielding portion 31 and a frame 32. The shielding portion 31 can adjust the shielding and opening of at least a portion of the flow surface of the flow path 2 as viewed in the flow direction of the fluid F (e.g., the axial direction) based on the detection results of the detection unit 16. Here, shielding refers to increasing the area of ​​the shielding portion 31 that overlaps with the flow path 2 in the flow direction of the fluid F, thereby blocking the flow of the fluid F. Opening refers to reducing the area of ​​the shielding portion 31 that overlaps with the flow path 2 in the flow direction of the fluid F, thereby suppressing the shielding portion 31 from blocking the flow of the fluid F. Furthermore, the detection results described above may be, for example, at least one of the driving state of the impeller 11 and the state of the fluid F in the flow path 2 through which the fluid F flows. In this way, the flow area of ​​the fluid F can be adjusted by the shielding portion 31, thereby suppressing a decrease in the delivery efficiency of the fluid F. Furthermore, if foreign matter such as dust or liquid is mixed in the fluid F, the foreign matter can be shielded, thereby suppressing the foreign matter from flowing in the flow direction.

[0055] The frame 32 is a housing that supports the shielding portion 31 so that it can be driven, and is attached to an axial end of the fan device 1. An opening 321 is provided in the center of the frame 32 as viewed axially. The opening 321 axially extends through the frame 32. The flow path regulating mechanism 3 has an opening 321. The opening 321 is connected to the end of the flow path 2 on the flow path regulating mechanism 3 side in the axial direction.

[0056] Preferably, when viewed axially, the inner diameter of opening 321 is the same as the inner diameter of the end of flow path 2 on the axial side of flow path regulating mechanism 3, and the outer edge of opening 321 corresponds to, for example, coincides with, the outer edge of this end of flow path 2. Alternatively, when viewed axially, the inner diameter of opening 321 may be larger than the inner diameter of the end of flow path 2 on the axial side of flow path regulating mechanism 3, and the outer edge of opening 321 may surround the outer edge of this end of flow path 2. In other words, when viewed axially, opening 321 may correspond to (for example, coincide with) this end of flow path 2, or may overlap to completely encompass this end of flow path 2. This reduces fluid resistance at opening 321 of flow path regulating mechanism 3, allowing fluid F to flow smoothly from one of flow path regulating mechanism 3 and fan device 1 to the other. However, this example does not exclude configurations where the inner diameter of opening 321 is smaller than the inner diameter of the end of flow path 2 on the axial side of flow path regulating mechanism 3, or where the outer edge of this end of flow path 2 surrounds the outer edge of opening 321.

[0057] Preferably, when the impeller 11 starts driving, the shielding portion 31 completely shields the aforementioned flow surface. By completely shielding the flow surface of the flow path 2 and preventing the flow of the fluid F, it is possible to prevent the flow of the fluid F from excessively loading the impeller 11 when the impeller 11 starts driving. This allows the impeller 11 to smoothly start rotating. However, this example does not exclude configurations in which the shielding portion 31 shields only a portion of the aforementioned flow surface when the impeller 11 starts driving, or configurations in which the shielding portion 31 does not shield the aforementioned flow surface when the impeller 11 starts driving.

[0058] The structure of the shielding portion 31 is not particularly limited. Figure 4A As shown, the shielding portion 31 may be a shutter-like structure. Figure 4A In the figure, a plurality of shielding plates 311 extending in the left-right direction are arranged in the up-down direction in the figure. One axial end of each shielding plate 311 is rotatably connected to the frame 32. The other axial end of each shielding plate 311 is rotatable around one axial end of the shielding plate 311. By rotating the other axial end of each shielding plate 311 toward the other axial direction Db (and the top in the figure), the opening 321 connected to the flow path 2 is opened. That is, the flow surface of the flow path 2 is opened. On the other hand, by rotating the other axial end of each shielding plate 311 toward one axial direction Da (and the bottom in the figure), the opening 321 connected to the flow path 2 is shielded. That is, the flow surface of the flow path 2 is shielded.

[0059] Or, as Figure 4B As shown, the shielding portion 31 may also be a structure that uses an iris throttle valve to open and close the flow path 2. Figure 4B In the embodiment, a plurality of throttling blades 312 are arranged in the circumferential direction. One end of the throttling blade 312 is connected to the frame 32 in a rotatable manner radially outward from the opening 321. The other end of the throttling blade 312 can rotate radially inward. In addition, a plate-shaped base 313 extending perpendicularly to the axial direction is arranged in the central part of the opening 321 observed from the axial direction. For example, the base 313 is supported on the frame 32 by a rib (not shown). A plurality of the ribs are arranged in the circumferential direction with the rotation axis J as a reference. One end of the rib is connected to the radially outer side surface of the base 314, and the other end of the rib is connected to the inner circumferential surface of the frame 32 (opening 321).

[0060] The annular space Sa formed between the inner circumference of the frame 32 (opening 321 thereof) and the plate-shaped base 313 communicates with the flow path 2. This space Sa is blocked by the radially inward rotation of the other end of the throttle blade 312. In other words, the flow surface of the flow path 2 is blocked. Furthermore, the space Sa is opened by the radially outward rotation of the other end of the throttle blade 312, communicating with the exterior of the fluid delivery device 100. In other words, the flow surface of the flow path 2 is opened.

[0061] The shielding portion 31 may be made of resin. For example, Figure 4A Shielding plate 311, Figure 4B The throttle blade 312 can be made of resin. In this way, the shielding portion 31 can be made lighter. In addition, the manufacturing cost can be reduced, thereby improving the productivity of the flow path adjustment mechanism 3.

[0062] Alternatively, the shielding portion 31 may be made of metal. Figure 4A Shielding plate 311, Figure 4B The throttle blade 312 can also be made of metal. This allows the shielding plate 311, throttle blade 312, and the like to be thinner while suppressing or preventing a decrease in strength. Furthermore, even if electromagnetic waves are emitted from the motor 12 driving the impeller 11 or electronic components mounted on the substrate 15, these electromagnetic waves can be shielded.

[0063] The shielding portion 31 of the flow path regulating mechanism 3 is driven by a component other than the motor 12. For example, the flow path regulating mechanism 3 further includes a shielding driving portion 33 (see Figure 2 ). The shielding drive unit 33 drives the shielding unit 31. In addition, the driving mechanism is not particularly limited. In this way, even if a problem occurs in the motor 12, the shielding unit 31 can be driven without being affected by it.

[0064] In addition, the flow path regulating mechanism 3 further includes a shielding control unit 34 (see Figure 2 ). The shielding control unit 34 controls the shielding drive unit 33, for example, controls the drive of the shielding unit 31. In addition, without being limited to this example, the drive of the shielding unit 31 of the flow path regulating mechanism 3 and the shielding drive unit 33 may also be controlled by the fan control unit 17 of the fan device 1. By controlling both the fan device 1 and the drive of the shielding unit 31 and the shielding drive unit 33 by the fan control unit 17, the fluid delivery device 100 can more easily adjust the shielding and opening of the flow surface of the flow path 2 corresponding to the rotation of the impeller 11. In addition, the drive of the shielding unit 31 of the flow path regulating mechanism 3 and the shielding drive unit 33 may also be controlled by the control unit of an electronic device equipped with the fan device 1.

[0065] Furthermore, the indication signal indicating the blocking or opening of at least a portion of the flow surface of the flow path 2 can be transmitted via wired communication. In this way, the fluid delivery device 100 can transmit the indication signal without worrying about communication failure.

[0066] Alternatively, the indication signal indicating whether at least a portion of the flow path 2 is blocked or opened can be transmitted via wireless communication. This eliminates the need for wiring to transmit the indication signal, thereby reducing the space occupied by such wiring. Consequently, the fluid delivery device 100 can be made more compact. Furthermore, the design freedom of the fluid delivery device 100 can be increased.

[0067] Preferably, the blocking and opening of at least a portion of the flow surface of the flow path 2 is adjusted based on the detection result of the detection unit 16. In this way, the blocking unit 31 can adjust the blocking and opening of the flow surface based on at least one of the driving state of the impeller 11 and the state of the fluid F in the flow path 2 (temperature, flow rate, flow velocity, etc.).

[0068] More preferably, the blocking and opening of at least a portion of the flow surface of the flow path 2 is regulated by the blocking portion 31 based on the first detection result of the first detection portion 161 and the second detection result of the second detection portion 162. In this way, the fluid delivery device 100 can estimate the state of the fluid F flowing in the flow path 2 based on the first detection result and the second detection result, and block and open the flow surface of the flow path 2 based on the estimated result.

[0069] In addition, the flow path regulating mechanism 3 further includes a regulating switch member 35 (see Figure 2 A portion of the regulating switch member 35 can be actuated by mechanical operation. The shielding portion 31 can be continuously adjusted in multiple or stepless steps to block or open at least a portion of the flow path 2 according to the operation of the regulating switch member 35. Thus, the shielding portion 31 can be driven by mechanical operation of the regulating switch member 35.

[0070] In addition, the flow path regulating mechanism 3 further includes a transmission mechanism 361 (see Figure 2 The transmission mechanism 361 converts the torque of the shaft member extending along and rotating about a predetermined axis into a first driving force and transmits it to the adjustment switch member 35. The direction of the first driving force is determined by the direction of the torque. Therefore, the mechanical operation of the adjustment switch member 35 can be performed based on the direction and magnitude of the first driving force.

[0071] Furthermore, the aforementioned "(predetermined) axis" and "axis member" may be the rotation axis J and the axis 121, respectively. In this manner, the flow surface of the flow path 2 can be shielded or opened depending on the rotation direction of the impeller 11 rotating about the rotation axis J. However, the present invention is not limited to this example, and the aforementioned "(predetermined) axis" and "axis member" may also be other than the rotation axis J and the axis 121, respectively.

[0072] The structure of transmission mechanism 361 is not particularly limited. For example, transmission mechanism 361 may include a magnetic component and utilize the magnetic force of the magnetic component. Transmission mechanism 361 may utilize magnetic force to perform at least one of conversion from torque to the first driving force and transmission of the first driving force to regulating switch member 35.

[0073] Alternatively, magnetic components can be used, for example, in the form of magnetic gears. In magnetic gears, magnetic poles that differ in the direction of rotation (i.e., north and south poles) are alternately arranged. When one of the magnetic gears, spaced apart and facing each other, is rotated, the repulsive force between the same magnetic poles and the attractive force between the opposite magnetic poles alternate, causing the other magnetic gear to rotate. This allows power to be transmitted from one magnetic gear to the other in a contactless manner.

[0074] By utilizing magnetic force, the transmission mechanism 361 can, for example, convert the torque of the shaft member into the first driving force of the adjustment switch member 35 in a contactless manner, or transmit the first driving force to the adjustment switch member 35. This can extend the life of the transmission mechanism 361. However, this example does not exclude a configuration in which the transmission mechanism 361 does not utilize magnetic force. For example, the transmission mechanism 361 may also be a gear mechanism comprising multiple meshing gears that are non-magnetic.

[0075] In this embodiment, the transmission mechanism 361 performs conversion to the first driving force and transmits the driving force to the regulating switch member 35 both when the flow surface of the flow path 2 is blocked and when it is open. However, the present invention is not limited to this example, and the transmission mechanism 361 may perform the conversion and transmission described above only when the flow surface of the flow path 2 is blocked or when it is open.

[0076] In this case, for example, the flow path regulating mechanism 3 further includes a biasing mechanism 362 (see Figure 2 The biasing mechanism 362 applies a second driving force to the regulating switch member 35, which blocks at least a portion of the flow passage 2. For example, an elastic material such as a torsion coil spring or a leaf spring can be used for the biasing mechanism 362. Meanwhile, the transmission mechanism 361 transmits the first driving force to the regulating switch member 35, which opens at least a portion of the flow passage 2.

[0077] The biasing mechanism 362 (e.g., an elastic member) applies an elastic force or the like as the second driving force to the regulating switch member 35. Therefore, even when the first driving force is not transmitted to the regulating switch member 35 (when the transmission mechanism 361 is not actuated), the regulating switch member 35 is provided with the second driving force, and thus the flow surface of the flow path 2 can be shielded by the shielding portion 31.

[0078] For example, when the second driving force is greater than the first driving force, the flow surface of the flow path 2 is blocked by the blocking portion 31. On the other hand, when the second driving force is less than the first driving force, the flow surface is opened by the blocking portion 31. In this way, the flow surface of the flow path 2 can be blocked or opened according to the difference between the first and second driving forces.

[0079] Preferably, when the second driving force is greater than the first driving force, the flow surface can be completely shielded by the shielding portion 31. Alternatively, when the second driving force is less than the first driving force, the flow surface can be completely opened by the shielding portion 31. In this way, the flow surface can be completely shielded or opened depending on the difference between the first and second driving forces.

[0080] Alternatively, when at least a portion of the flow surface of the flow path 2 is shielded, the first driving force may not be transmitted to the regulating switch member 35. For example, the flow path regulating mechanism 3 may further include a switching unit 37 for switching the transmission mechanism 361 on / off (ON / OFF) (see Figure 2 ). The switching unit 37 switches whether the first driving force can be transmitted from the transmission mechanism 361 to the regulating switch component 35. In this way, it is possible to switch whether the shielding unit 31 can be operated (i.e., turned on / off) according to the switching of the switching unit 37. For example, in the case where the shielding and opening of the flow surface of the flow path 2 are selectively implemented according to the first driving force transmitted to the regulating switch component 35, it is possible to switch whether the shielding and opening of the flow surface can be performed according to the switching instruction of the switching unit 37. In addition, in the case where only the opening of the flow surface of the flow path 2 is implemented according to the first driving force transmitted to the regulating switch component 35, it is possible to switch whether the opening of the flow surface can be performed according to the switching instruction of the switching unit 37.

[0081] In addition, the flow path regulating mechanism 3 further includes a state maintaining mechanism 38 (see Figure 2 The state maintaining mechanism 38 maintains the state of the shielding portion 31, for example, maintaining the flow surface of the flow path 2 in a state completely shielded by the shielding portion 31. By maintaining the flow surface in a state completely shielded, backflow of the fluid F can be reliably prevented even if a problem occurs in the flow path regulating mechanism 3. Alternatively, the state maintaining mechanism 38 may maintain a state in which a portion of the flow surface of the flow path 2 is shielded by the shielding portion 31, or may maintain a state in which at least a portion of the flow surface of the flow path 2 is open.

[0082] Next, the flow path regulating mechanism 3 preferably further includes a mounting portion 39 for mounting the flow path regulating mechanism 3 on the fan device 1. For example, a plurality of mounting portions 39 are arranged circumferentially at radially outer ends of the frame 32 and engage with the housing 13 of the fan device 1.

[0083] exist Figure 1In the embodiment, the flow path regulating mechanism 3 is mounted on the fan device 1 by snap-fitting. Each mounting portion 39 has an extension portion 391 and a claw portion 392. The extension portion 391 is flexible and extends from the radially outer end portion of the frame 32 to one axial direction Da. The claw portion 392 is arranged at one axial end portion of the extension portion 391 and protrudes radially inward from the radially inner side surface of the extension portion 391. The claw portion 392 is hooked on the hooked portion 133 arranged on the radially outer side surface of the housing 13. In addition, the hooked portion 133 may be, for example, Figure 1 The concave portion shown in FIG. 1 may be a concave portion that is concave inward in the radial direction, or a convex portion that is protruding outward in the radial direction. Figures 3 to 4B In the figure, the mounting portion 39 and the hooked portion 133 are omitted.

[0084] but, Figure 1 The example does not exclude the fan device 1 from having a mounting portion 39. For example, the extension portion 391 of the mounting portion 39 may extend from the radially outer end of the housing 13 in the other axial direction Db. The claw portion 392 may also be hooked on the hooked portion 133 disposed on the radially outer side of the frame 32.

[0085] Specifically, preferably, one of the fan device 1 and the flow path regulating mechanism 3 includes a mounting portion 39 for mounting the one to the other. This allows for easy mounting of the fan device 1 and the flow path regulating mechanism 3 relative to the other. Consequently, the fluid delivery device 100 can be easily assembled.

[0086] However, the above example does not exclude a configuration in which one of the fan device 1 and the flow path regulating mechanism 3 is mounted to the other using a unit other than the mounting portion 39. For example, the fan device 1 and the flow path regulating mechanism 3 may be fastened with bolts, or may be connected by welding, welding, brazing, or bonding.

[0087] <2. Modification of the embodiment>

[0088] Next, refer to Figures 5A to 6 , a modified example of the implementation method is described. Figure 5A This is an external view showing a state in which the outflow port 22 is closed in a modified example of the fluid delivery device 100 . Figure 5B This is an external view showing a state in which the outflow port 22 is opened in a modified example of the fluid delivery device 100 . Figure 5C It is an exploded perspective view of a fluid delivery device 100 according to a modified example. Figure 6 : is a cross-sectional view showing a configuration example of a stationary blade Sv in a fluid delivery device 100 according to a modified example, as viewed from the radial direction. Figure 6 Indicates along Figure 5B The cross section of the stator blade Sv is the single dotted line VI. Figure 6In the figure, Dr represents the circumferential direction with respect to the rotation axis J. The following describes the configurations of the modified examples that differ from the above-described embodiment. In some cases, the same reference numerals are given to the same configuration elements as those in the above-described embodiment, and their descriptions are omitted.

[0089] <2-1. Flow Path Adjustment Mechanism 3>

[0090] In a modified example, Figures 5A to 5C As shown, the flow path adjustment mechanism 3 is disposed at one axial end (outlet 132 side) of the fan device 1. However, this example does not exclude a configuration in which the flow path adjustment mechanism 3 is disposed at the other axial end (inlet 131 side) of the fan device 1.

[0091] Furthermore, the shielding portion 31 of the flow path regulating mechanism 3 includes a base 314 , ribs 315 , and shielding blades 316 .

[0092] The base 314 is arranged in the central part of the opening 321 when viewed from the axial direction. In the present embodiment, the base 314 protrudes in the axial direction Da from one axial end surface of the frame 32. In detail, the axial direction Da of the one axial end surface of the base 314 is located closer to the axial direction Da than the axial direction Da of the one axial end surface of the frame 32. The axial direction Da of the one axial end surface of the base 314 is located at the same axial position as the other axial end surface of the frame 32. However, this example does not exclude a structure in which (the axial direction Da of the one axial end surface of the base 314) does not protrude in the axial direction Da from one axial end surface of the frame 32, nor does it exclude a structure in which the axial direction Da of the one axial end surface of the base 314 is not located in the same axial position as the other axial end surface of the frame 32. For example, the base 314 may also protrude in the axial direction Db from the other axial end surface of the frame 32.

[0093] In addition, when viewed from the axial direction, the outer shape of the base 314 (especially the other end thereof) is the same as the outer shape of the motor 12 (especially the one end thereof). Figures 5A to 5C In addition, the shielding drive unit 33 can be configured inside the base 314. Alternatively, the shielding drive unit 33 can also be configured at the other axial end of the base 314.

[0094] Preferably, when viewed axially, the outer shape of the base 314 (particularly its other axial end) is located at the same position as the outer shape of the motor 12 (particularly its one axial end). However, this example is not limiting, and when viewed axially, the outer shape of the base 314 (particularly its other axial end) may be located inward relative to the outer shape of the motor 12 (particularly its one axial end). However, this example does not exclude a configuration in which the outer shape of the base 314 (particularly its other axial end) is located outward relative to the outer shape of the motor 12 (particularly its one axial end) when viewed axially.

[0095] The ribs 315 extend at least radially, supporting the base 314 on the frame 32, and are arranged in a plurality of ribs in the circumferential direction relative to the rotation axis J. As described above, the flow path regulating mechanism 3 includes the ribs 315. The ribs 315 are an example of the "second ribs" of the present invention, extending radially inward from the inner circumferential surface of (the opening 321 of) the frame 32. Specifically, the radially outer end of the rib 315 is connected to the inner circumferential surface of (the opening 321 of) the frame 32, and the radially inner end of the rib 315 is connected to the radially outer side surface of the base 314.

[0096] The shielding blade 316 is an example of the "opening and closing portion" of the present invention, and is capable of shielding and opening at least a portion of the flow surface of the flow path 2. As described above, the shielding portion 31 has a plurality of shielding blades 316. Each shielding blade 316 is arranged along the base 314 when viewed from the axial direction. One end of the shielding blade 316 is connected to the base 314 in a rotatable manner. Through the shielding drive portion 33, the other end of the shielding blade 316 can be rotated radially via the circumferential direction, in other words, can be rotated around an axis extending axially through the radial inner end portion of the shielding blade 316 (the connection portion with the base 314).

[0097] In addition, the space Sb surrounded by the outer edge of the opening 321, the base 314 and the rib 315 is connected to the flow path 2. Figure 5A As shown, the space Sb is shielded by rotating the other end of the shielding blade 316 radially outward. The shielding blade 316 is arranged closer to the other axial direction Db than the rib 315 and can cover the other axial end of the space Sb. In other words, the shielding blade 316 can shield the flow surface of the flow path 2. On the other hand, Figure 5B As shown, the aforementioned space Sb is opened by rotating the other end of the shielding blade 316 radially inward, thereby connecting to the exterior of the fluid delivery device 100. In other words, the flow surface of the flow path 2 is opened. In this case, the shielding blade 316 can be disposed within the base 314 via a groove (not shown) disposed on the radially outer surface of the base 314 and extending circumferentially, or can be disposed on the other axial side Db of the base 314.

[0098] Preferably, the base 314 is in the shape of a frustum extending in the axial direction and is arranged radially inward of the inner circumference of the flow path 2 when viewed in the axial direction. As described above, the shielding portion 31 includes the base 314. The outer diameter of the base 314 when viewed in the axial direction decreases as it moves from the inflow side of the fluid F toward the outflow side in the axial direction. For example, Figures 5A to 5C, decreasing toward the axial direction Da. The opening of the shielding blades 316 allows the fluid F to flow out of at least a portion of the flow path 2. By providing the base 314 with the aforementioned three-dimensional shape, the flow resistance of the fluid F near the radially outer surface of the base 314 can be reduced. Consequently, the fluid F can flow smoothly. However, this example does not exclude configurations where the base 314 does not have the aforementioned frustum-shaped configuration. For example, the base 314 may also have an axially extending cylindrical shape.

[0099] The shielding portion 31 (particularly the ribs 315 and shielding blades 316) can be made of either resin or metal. If made of resin, the shielding portion 31 can be made lighter. Furthermore, since its manufacturing cost can be reduced, the productivity of the flow path regulating mechanism 3 can be improved. Furthermore, if made of metal, the ribs 315 and shielding blades 316 can be made thinner in the axial direction while suppressing or preventing a decrease in strength. Furthermore, even if electromagnetic waves are emitted from the motor 12 driving the impeller 11 or the electronic components mounted on the substrate 15, these electromagnetic waves can be shielded.

[0100] <2-2. Press Plate 4>

[0101] Then, in Figures 5A to 5C In the illustrated variation, the fluid delivery device 100 further includes a pressure plate 4. The pressure plate 4 is axially positioned between the fan device 1 and the flow path control mechanism 3 to prevent movement of the shielding blade 316 of the flow path control mechanism 3 in the other axial direction Db. The presence of the pressure plate 4 facilitates rotation of the shielding blade 316 parallel to a plane perpendicular to the axial direction, enabling more effective coverage of the other axial end of the space Sb enclosed by the base 314, ribs 315, and opening 321.

[0102] The pressure plate 4 (particularly the frame 41 described later) is fastened to one axial end of the fan device 1 together with the frame 32 of the flow path regulating mechanism 3 by means of screws or bolts. However, this is not limited to the example, and the pressure plate 4 may also be connected to the fan device 1 and the flow path regulating mechanism 3 by means of a connection unit, for example Figure 1 The flow path adjustment mechanism 3 is similarly snap-fit, but may also be welding, brazing using silver solder or the like, or bonding using an adhesive.

[0103] The pressing plate 4 has a frame 41 , a base 42 , and ribs 43 .

[0104] The frame 41 is a housing that supports the base 42 and is mounted on one axial end of the fan device 1. In addition, the frame 32 of the flow path regulating mechanism 3 is mounted on one axial end of the frame 41. An opening 411 is provided in the central portion of the frame 41 when viewed from the axial direction. The opening 411 penetrates the frame 41 in the axial direction. The opening 411 is connected to one axial end of the flow path 2 and the opening 321 of the flow path regulating mechanism 3. In addition, in this modified example, the flow path 2 is composed of the internal space of the housing 13, the opening 411 of the pressure plate 4, and the opening 321 of the flow path regulating mechanism 3.

[0105] Preferably, when viewed axially, the inner diameter of opening 411 is the same as the inner diameter of one axial end of flow path 2 and the inner diameter of opening 321 of flow path regulating mechanism 3, and the outer edge of opening 321 corresponds to, for example, coincides with, the outer edge of one axial end of flow path 2 and opening 321 of flow path regulating mechanism 3. Alternatively, when viewed axially, the inner diameter of opening 321 is larger than the inner diameter of one axial end of flow path 2, and the outer edge of opening 321 surrounds the outer edge of one axial end of flow path 2. In other words, when viewed axially, opening 321 may correspond to (for example, coincide with) one axial end of flow path 2, or may overlap to completely encompass the one axial end of flow path 2. In the latter case, the outer edge of opening 321 of flow path regulating mechanism 3 may correspond to (for example, coincide with) the outer edge of opening 411 of pressure plate 4, or may encompass the outer edge of opening 411. This reduces fluid resistance within opening 411 of pressure plate 4, enabling smooth flow of fluid F. However, this example does not exclude a configuration in which the inner diameter of the opening 411 is smaller than the inner diameter of one axial end portion of the flow channel 2 , or a configuration in which the outer edge of one axial end portion of the flow channel 2 surrounds the outer edge of the opening 411 .

[0106] Furthermore, a plate-shaped base 42 extending perpendicularly to the axial direction is disposed in the center of the opening 411 when viewed axially. The base 42 is axially opposed to one axial end of the motor 12 of the fan device 1 and is also axially opposed to the base 314 of the flow control mechanism 3. Preferably, when viewed axially, the outer diameter of the base 42 is the same as the outer diameter of one axial end of the motor 12 of the fan device 1 and the outer diameter of the base 314 of the flow control mechanism 3, and the outer edge of the base 42 corresponds to, for example, coincides with, the outer edge of one axial end of the motor 12 and the outer edge of the base 314 of the flow control mechanism 3. This reduces fluid resistance near the radially outer side surface of the base 42 of the pressure plate 4, allowing the fluid F to flow smoothly. However, this example does not exclude a configuration in which the outer edge of the base 42 does not coincide with at least one of the outer edge of one axial end of the motor 12 and the outer edge of the base 314 of the flow control mechanism 3.

[0107] The ribs 43 extend at least radially, supporting the base 42 on the frame 41. A plurality of ribs 43 are arranged circumferentially about the rotation axis J. The ribs 43 extend radially inward from the inner circumference of (the opening 411 of) the frame 41. Specifically, the radially outer ends of the ribs 43 are connected to the inner circumference of (the opening 411 of) the frame 41, and the radially inner ends of the ribs 43 are connected to the radially outer side surface of the base 42.

[0108] Preferably, when viewed from the axial direction, at least a portion of the other axial end of the rib 43 overlaps with one axial end of the rib 14 of the fan device 1 and the other axial end of the rib 315 of the flow path regulating mechanism 3. More preferably, Figure 6 As shown, when viewed in the axial direction, the other axial end portion of the rib 43 corresponds to (eg, coincides with) one axial end portion of the rib 14 and the other axial end portion of the rib 315 so as to overlap.

[0109] For example, Figure 6 As shown, the circumferential width W4a of one axial end portion of the rib 43 is the same as the circumferential width W3 of the other axial end portion of the rib 315 of the flow path regulating mechanism 3. Furthermore, the circumferential width W4b of the other axial end portion of the rib 43 is the same as the circumferential width W1 of one axial end portion of the rib 14 of the fan device 1.

[0110] Furthermore, the outer shape of one axial end portion of the rib 43 corresponds to, for example, is identical to, the outer shape of the other axial end portion of the rib 315 of the flow path regulating mechanism 3. Furthermore, the outer shape of the other axial end portion of the rib 43 corresponds to, for example, is identical to, the outer shape of one axial end portion of the rib 14 of the fan device 1.

[0111] This reduces the deviation between the ends of the ribs 14 and 315 when viewed from the axial direction. Consequently, the flow resistance of the fluid F flowing from the fan device 1 into the flow path control mechanism 3 can be reduced. Furthermore, the amount of fluid F delivered from the fluid delivery device 100 can be increased, and the static pressure characteristics on the outlet 22 side of the fluid delivery device 100 can be improved.

[0112] It is further preferred that Figure 6 As shown, the rib 43, together with the axially opposed ribs 14 and 315, constitutes a single stator blade Sv. This allows the individual stator blades Sv of the fluid delivery device 100 to be longer in the direction in which the individual stator blades Sv extend (at least in the axial direction). This improves the flow straightening effect of the individual stator blades Sv on the fluid F, further reducing the flow resistance of the fluid F flowing from the fan device 1 into the flow path control mechanism 3. Furthermore, the amount of fluid F delivered from the fluid delivery device 100 can be increased, further improving the static pressure characteristics on the outlet 22 side of the fluid delivery device 100.

[0113] In addition, without being limited to the above example, the pressing plate 4 may also be omitted. Figure 7 As shown, the frame 32 of the flow path regulating mechanism 3 can also be directly connected to one axial end of the fan device 1. In addition, the connecting unit can be connected to Figure 1 The flow path adjustment mechanism 3 is similarly snap-fit, but may also be fastening by threaded connection with bolts or screws, welding, brazing using silver solder or the like, or bonding using an adhesive.

[0114] Figure 7 1 is an external view showing another structural example of the fluid delivery device 100 of the modified example. Figure 7 In the modified example, the fluid delivery device 100 is in a state where the outflow port 22 is opened. Figure 7 In the embodiment, the flow path 2 is composed of the internal space of the housing 13 and the opening 321 of the flow path adjustment mechanism 3.

[0115] When the pressure plate 4 is omitted, it is preferred that, when viewed axially, at least a portion of the axial end portion of the rib 315 on the fan device 1 side (i.e., the other axial end portion) overlaps with the axial end portion of the rib 14 on the flow path regulating mechanism 3 side (i.e., one axial end portion). More preferably, Figure 8 As shown, when viewed in the axial direction, the other axial end portion of the rib 315 corresponds to (eg, coincides with) one axial end portion of the rib 14 so as to overlap. Figure 8 : is a cross-sectional view showing another structural example of the stationary blade Sv in the fluid delivery device 100 of the modified example, as viewed from the radial direction. Figure 8 Indicates along Figure 7 The cross section of the stator blade Sv of the single dotted line VIII. Figure 8 In FIG, Dr represents the circumferential direction with the rotation axis J as a reference.

[0116] For example, Figure 8 As shown, the circumferential width W3 of one axial end portion of the rib 315 corresponds to, for example, is the same as, the circumferential width W3 of the other axial end portion of the rib 315 of the flow path regulating mechanism 3. Furthermore, the outer shape of one axial end portion of the rib 315 corresponds to, for example, is the same as, the outer shape of the other axial end portion of the rib 315 of the flow path regulating mechanism 3.

[0117] This reduces the deviation between the ends of the ribs 14 and 315 when viewed from the axial direction. Consequently, the flow resistance of the fluid F flowing from the fan device 1 into the flow path control mechanism 3 can be reduced. Furthermore, the amount of fluid F delivered from the fluid delivery device 100 can be increased, and the static pressure characteristics on the outlet 22 side of the fluid delivery device 100 can be improved.

[0118] It is further preferred that Figure 8As shown, the rib 315, together with the axially opposed rib 14, forms a single stator blade Sv. This allows the individual stator blades Sv of the fluid delivery device 100 to be longer in the direction in which the individual stator blades Sv extend (at least in the axial direction). This improves the flow straightening effect of the individual stator blades Sv on the fluid F, further reducing the flow resistance of the fluid F flowing from the fan device 1 into the flow path control mechanism 3. Furthermore, the amount of fluid F delivered from the fluid delivery device 100 can be increased, further improving the static pressure characteristics on the outlet 22 side of the fluid delivery device 100.

[0119] <3. Others>

[0120] The above describes the embodiments of the present invention. In addition, the scope of the present invention is not limited to the above-mentioned embodiments. The present invention can be implemented by adding various changes to the above-mentioned embodiments without departing from the scope of the main purpose of the invention. In addition, the matters described in the above-mentioned embodiments can be appropriately combined in any manner within the scope that does not cause contradiction.

[0121] <4. Summary>

[0122] The embodiments described so far will be summarized below.

[0123] For example, the flow path regulating mechanism disclosed in this specification is capable of regulating the flow area of ​​the fluid flowing through the drive of the driving body, and is constructed to have a shielding portion that can regulate the shielding and opening of at least a portion of the flow surface of the flow path observed from the flow direction of the fluid based on the detection results of at least one of the driving state of the driving body and the state of the fluid in the flow path in which the fluid flows (first structure).

[0124] The flow path adjustment mechanism of the first configuration may be configured such that, when the driving of the driving body starts, the shielding portion completely shields the flow surface (second configuration).

[0125] The flow path regulating mechanism of the first or second structure can also be constructed to further include a regulating switch component, a part of which can be operated by mechanical operation, and the shielding and opening of at least a part of the above-mentioned flow surface by the above-mentioned shielding part can be adjusted in multiple stages or steplessly and continuously according to the operation of the above-mentioned regulating switch component (third structure).

[0126] The flow path adjustment mechanism of the third configuration may further include a transmission mechanism that converts torque of a shaft member extending along a predetermined axis and rotating about the axis into a first driving force and transmits the first driving force to the adjustment switch member (fourth configuration).

[0127] The flow path regulating mechanism of the fourth structure may also be constructed such that the transmission mechanism has a magnetic component, and utilizes the magnetic force of the magnetic component to implement at least one of the conversion to the first driving force and the transmission of the first driving force to the regulating switch component (fifth structure).

[0128] The flow path regulating mechanism of the fourth or fifth structure can also be constructed to further include a biasing mechanism, which imparts a second driving force for shielding at least a portion of the above-mentioned flow surface of the above-mentioned flow path to the above-mentioned regulating switch component, and the above-mentioned transmission mechanism transmits the above-mentioned first driving force for opening at least a portion of the above-mentioned flow surface of the above-mentioned flow path to the above-mentioned regulating switch component (sixth structure).

[0129] The flow path regulating mechanism of the sixth structure can also be constructed so that when the second driving force is greater than the first driving force, the flow surface is completely shielded by the shielding portion, and when the second driving force is less than the first driving force, the flow surface is completely opened by the shielding portion (seventh structure).

[0130] The flow channel regulating mechanism of any one of the fourth to seventh structures may be further provided with a switching unit that switches whether or not the first driving force can be transmitted to the regulating switch member (eighth structure).

[0131] The flow channel adjustment mechanism of any one of the first to eighth configurations may be further provided with a state maintaining mechanism that maintains a state in which the flow surface is completely shielded by the shielding portion (ninth configuration).

[0132] The flow channel regulating mechanism of any one of the first to ninth structures may be configured such that the shielding portion is made of resin (tenth structure).

[0133] The flow channel regulating mechanism of any one of the first to ninth structures may be configured such that the shielding portion is made of metal (eleventh structure).

[0134] The flow path regulating mechanism of any one of the first to eleventh structures may also be constructed such that the shielding portion comprises: a base which is in the shape of a cone extending in the axial direction and is arranged radially inward of the inner circumferential surface of the flow path when viewed in the axial direction; and a plurality of opening and closing portions which are capable of shielding and opening at least a portion of the flow surface of the flow path, each of the opening and closing portions being arranged along the outer edge of the base when viewed in the axial direction, and the outer diameter of the base as viewed in the axial direction becomes smaller as it moves from the inflow side of the fluid in the axial direction toward the outflow side (the twelfth structure).

[0135] The fluid delivery device disclosed in this specification is configured to include: a flow path regulating mechanism of any one of the first to twelfth configurations; and a flow device that causes the fluid to flow by driving the driving body (thirteenth configuration).

[0136] The fluid delivery device of the 13th structure can also be constructed as follows: the above-mentioned flow path regulating mechanism has an opening connected to the end part of the above-mentioned flow path regulating mechanism side in the axial direction of the above-mentioned flow path, and when viewed from the axial direction, the inner diameter of the above-mentioned opening is the same as the inner diameter of the end part of the above-mentioned flow path regulating mechanism side in the axial direction of the above-mentioned flow path, and the outer edge of the above-mentioned opening corresponds to the outer edge of the end part of the above-mentioned flow path, or, when viewed from the axial direction, the inner diameter of the above-mentioned opening is larger than the inner diameter of the end part of the above-mentioned flow path regulating mechanism side in the axial direction of the above-mentioned flow path, and the outer edge of the above-mentioned opening surrounds the outer edge of the end part of the above-mentioned flow path (14th structure).

[0137] The fluid delivery device of the 13th or 14th configuration may be configured such that the flow path disposed inside the circulation device has a cylindrical shape extending from an inlet side to an outlet side of the fluid in the axial direction (a 15th configuration).

[0138] The fluid delivery device of any one of the 13th to 15th configurations may be configured such that at least one of the flow path adjustment mechanism and the circulation device includes a mounting portion for mounting the one to the other (the 16th configuration).

[0139] The fluid delivery device of any one of the 13th to 16th structures may be configured such that the circulation device includes a driving portion for driving the driving body, and the shielding portion of the flow path regulating mechanism is driven by a component other than the driving portion (the 17th structure).

[0140] The fluid delivery device of any one of the 13th to 17th configurations may be configured such that the flow path regulating mechanism is disposed on the inlet side of the flow path (the 18th configuration).

[0141] The fluid delivery device of any one of the 13th to 17th configurations may be configured such that the flow path regulating mechanism is disposed on the outflow port side of the flow path (the 19th configuration).

[0142] The fluid delivery device of the nineteenth structure may also be configured such that the circulation device includes:

[0143] A driving portion that drives the above-mentioned driving body; and a first rib that extends at least radially inward from the inner circumferential surface of the above-mentioned flow path and supports the above-mentioned driving portion, and expands at least in the axial direction, the above-mentioned flow path regulating mechanism having: an opening that is connected to the end portion of the above-mentioned flow path regulating mechanism side in the axial direction of the above-mentioned flow path; and a second rib that extends radially inward from the inner circumferential surface of the above-mentioned opening, and when viewed from the axial direction, at least a part of the end portion of the above-mentioned second rib on the axial direction of the above-mentioned circulation device side overlaps with the end portion of the above-mentioned first rib on the axial direction of the above-mentioned flow path regulating mechanism side (Structure 20).

[0144] The fluid delivery device of the 20th configuration may be configured so that the second rib constitutes a single stationary blade together with the first rib opposed in the axial direction (21st configuration).

[0145] The fluid delivery device of any one of the 13th to 17th structures can also be constructed as follows: the above-mentioned circulation devices are multiple and are connected in series in the axial direction, and the above-mentioned flow path regulating mechanism is arranged between the outflow port of the above-mentioned circulation device of the front stage and the inflow port of the above-mentioned circulation device of the rear stage (Structure 22).

[0146] The fluid delivery device of any one of the 13th to 22nd structures may also be configured to further include a flow control unit that controls the flow device, wherein the drive of the shielding portion of the flow path regulating mechanism is controlled by the flow control unit (23rd structure).

[0147] The fluid delivery device of any one of the structures 13 to 23 can also be constructed as follows: the above-mentioned circulation device further has a detection unit, which is used to detect at least one of the driving state of the above-mentioned driving body and the state of the above-mentioned fluid in the above-mentioned flow path, and the shielding and opening of at least a part of the circulation surface are adjusted based on the detection result of the above-mentioned detection unit (structure 24).

[0148] The fluid delivery device of the 24th structure can also be constructed as follows, wherein the above-mentioned detection part includes: a first detection part, which detects the state of the above-mentioned fluid on the inlet side of the above-mentioned driving body; and a second detection part, which detects the state of the above-mentioned fluid on the outlet side of the above-mentioned driving body, and the shielding and opening of at least a part of the above-mentioned flow surface are adjusted by the above-mentioned shielding part based on the first detection result of the above-mentioned first detection part and the second detection result of the above-mentioned second detection part (Structure 25).

[0149] The fluid delivery device of any one of the 13th to 25th configurations may be configured such that an instruction signal for instructing the blocking and opening of at least a portion of the flow surface is transmitted by wired communication (26th configuration).

[0150] The fluid delivery device of any one of the 13th to 25th configurations may be configured such that an instruction signal for instructing the covering and opening of at least a portion of the flow surface is transmitted by wireless communication (27th configuration).

[0151] Availability in production

[0152] The present invention can be used in a device for delivering fluid in the axial direction.

[0153] Explanation of symbols

[0154] 100 - Fluid delivery device, 1, 1a, 1b - Fan device, 11 - Impeller, 111 - Moving blade, 12 - Motor, 121 - Shaft, 13 - Housing, 131 - Inlet, 132 - Outlet, 133 - Hooked portion, 14 - Rib, 15 - Base plate, 16 - Detection portion, 161 - First detection portion, 162 - Second detection portion, 17 - Fan control portion, 2 - Flow path, 21 - Inlet, 22 - Outlet, 3, 3a - Flow path adjustment mechanism, 31 - Shielding portion, 311 - Shielding plate, 312 - Throttle blade, 313 - Base, 3 14—base, 315—rib, 316—shielding blade, 32—frame, 321—opening, 33—shielding drive unit, 34—shielding control unit, 35—adjusting switch component, 361—transmission mechanism, 362—bias mechanism, 37—switching unit, 38—state maintaining mechanism, 39—mounting unit, 391—extension unit, 392—claw unit, 4—pressure plate, 41—frame, 411—opening, 42—base, 43—rib, J—rotating shaft, F—fluid, Sv—stationary blade, Sa, Sb—space, Da—one axial direction, Db—the other axial direction.

Claims

1. A flow path regulating mechanism capable of regulating the flow area of ​​a fluid flowing by the driving of a driving body, The flow path regulating mechanism is characterized in that: A shielding portion is provided that can adjust shielding and opening of at least a portion of a flow surface of the flow path viewed from the flow direction of the fluid based on a detection result of at least one of a driving state of the driving body and a state of the fluid in the flow path through which the fluid flows.

2. The flow path regulating mechanism according to claim 1, wherein: When the driving of the driving body starts, the shielding portion completely shields the flow surface.

3. The flow path regulating mechanism according to claim 1, wherein: It also includes an adjustment switch component, a part of which can be moved by mechanical operation. The shielding and opening of at least a portion of the flow surface by the shielding portion are adjusted in multiple stages or continuously and steplessly according to the operation of the regulating switch component.

4. The flow path regulating mechanism according to claim 3, wherein: A transmission mechanism is further provided that converts torque of a shaft member extending along a predetermined axis and rotating about the axis into a first driving force and transmits the first driving force to the regulating switch member.

5. The flow path regulating mechanism according to claim 4, characterized in that: The transmission mechanism includes a magnetic member, and utilizes magnetic force of the magnetic member to perform at least one of conversion into the first driving force and transmission of the first driving force to the regulating switch member.

6. The flow path regulating mechanism according to claim 4, characterized in that: further comprising a biasing mechanism for applying a second driving force to the regulating switch member for shielding at least a portion of the flow surface of the flow path, The transmission mechanism transmits the first driving force for opening at least a portion of the flow surface of the flow path to the regulating switch member.

7. The flow path regulating mechanism according to claim 6, wherein: When the second driving force is greater than the first driving force, the flow surface is completely shielded by the shielding portion. When the second driving force is smaller than the first driving force, the flow surface is completely opened by the shielding portion.

8. The flow path regulating mechanism according to claim 4, wherein: A switching unit is further provided, the switching unit switching whether or not the first driving force can be transmitted to the regulating switch member.

9. The flow path regulating mechanism according to claim 1, wherein: The device further includes a state maintaining mechanism for maintaining a state in which the flow surface is completely covered by the covering portion.

10. The flow path regulating mechanism according to claim 1, wherein: The shielding portion is made of resin.

11. The flow path regulating mechanism according to claim 1, wherein: The shielding portion is made of metal.

12. The flow path regulating mechanism according to claim 1, wherein: The shielding portion has: a base having a frusto-conical shape extending in the axial direction and arranged radially inward of an inner peripheral surface of the flow path when viewed in the axial direction; as well as A plurality of opening and closing parts capable of covering and opening at least a portion of the flow surface of the flow path, The opening and closing parts are arranged along the outer edge of the base when viewed from the axial direction. An outer diameter of the base as viewed in the axial direction decreases from an inflow side toward an outflow side of the fluid in the axial direction.

13. A fluid delivery device, characterized in that: have: The flow path regulating mechanism according to any one of claims 1 to 12; and A flow device causes the fluid to flow when driven by the driving body.

14. The fluid delivery device according to claim 13, wherein: The flow path regulating mechanism has an opening connected to an end portion of the flow path on the flow path regulating mechanism side in the axial direction of the flow path. When viewed in the axial direction, the inner diameter of the opening is the same as the inner diameter of the end portion of the flow path on the flow path regulating mechanism side in the axial direction of the flow path, and the outer edge of the opening corresponds to the outer edge of the end portion of the flow path. or, When viewed in the axial direction, the inner diameter of the opening is larger than the inner diameter of an end portion of the flow path on the flow path regulating mechanism side in the axial direction, and the outer edge of the opening surrounds the outer edge of the end portion of the flow path.

15. The fluid delivery device according to claim 13, wherein: The flow path disposed inside the circulation device has a cylindrical shape extending from an inlet side of the fluid to an outlet side in the axial direction.

16. The fluid delivery device according to claim 13, wherein: At least one of the flow path adjustment mechanism and the circulation device has a mounting portion for mounting the one on the other.

17. The fluid delivery device according to claim 13, wherein: The circulation device includes a driving portion that drives the driving body. The shielding portion of the flow path regulating mechanism is driven by a component other than the driving portion.

18. The fluid delivery device according to claim 13, wherein: The flow path regulating mechanism is arranged on the inlet side of the flow path.

19. The fluid delivery device according to claim 13, wherein: The flow path regulating mechanism is arranged on the outflow port side of the flow path.

20. The fluid delivery device according to claim 19, wherein: The circulation device has: a driving portion that drives the driving body; and a first rib extending at least radially inward from the inner peripheral surface of the flow path to support the driving portion and extending at least in the axial direction; The flow path regulating mechanism comprises: an opening connected to an end portion of the flow path on the flow path regulating mechanism side in the axial direction of the flow path; and a second rib extending radially inward from the inner circumference of the opening, When viewed in the axial direction, at least a portion of an end portion of the second rib on the circulation device side in the axial direction overlaps with an end portion of the first rib on the flow path regulating mechanism side in the axial direction.

21. The fluid delivery device according to claim 20, wherein: The second rib constitutes a single stationary blade together with the first rib that is opposed in the axial direction.

22. The fluid delivery device according to claim 13, wherein: There are multiple circulation devices, which are connected in series in the axial direction. The flow path regulating mechanism is disposed between the outflow port of the preceding flow device and the inflow port of the succeeding flow device.

23. The fluid delivery device according to claim 13, wherein: It also includes a flow control unit, which controls the flow device. The driving of the shielding portion of the flow path adjustment mechanism is controlled by the flow control portion.

24. The fluid delivery device according to claim 13, wherein: The circulation device further includes a detection unit configured to detect at least one of a driving state of the driving body and a state of the fluid in the flow path. The shielding and opening of at least a portion of the flow surface are adjusted based on the detection result of the detection unit.

25. The fluid delivery device according to claim 24, wherein: The detection unit includes: a first detection unit that detects a state of the fluid on an inlet side relative to the driving body; and a second detection unit that detects the state of the fluid on the outflow port side relative to the driving body, The shielding portion adjusts shielding and opening of at least a portion of the flow surface based on a first detection result of the first detection portion and a second detection result of the second detection portion.

26. The fluid delivery device according to claim 13, wherein: An indication signal indicating whether at least a portion of the circulation surface is covered or opened is transmitted through wired communication.

27. The fluid delivery device according to claim 13, wherein: An indication signal indicating the covering and opening of at least a portion of the circulation surface is transmitted via wireless communication.

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