WO2023189572A1 - 送風機及び移動体 - Google Patents

送風機及び移動体 Download PDF

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Publication number
WO2023189572A1
WO2023189572A1 PCT/JP2023/009979 JP2023009979W WO2023189572A1 WO 2023189572 A1 WO2023189572 A1 WO 2023189572A1 JP 2023009979 W JP2023009979 W JP 2023009979W WO 2023189572 A1 WO2023189572 A1 WO 2023189572A1
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WO
WIPO (PCT)
Prior art keywords
fan
blower
case
motor
hub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/009979
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English (en)
French (fr)
Japanese (ja)
Inventor
将 小山
峰明 磯田
英明 森
浩二 久山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to JP2024511740A priority Critical patent/JPWO2023189572A1/ja
Priority to CN202380029459.1A priority patent/CN118922632A/zh
Publication of WO2023189572A1 publication Critical patent/WO2023189572A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer

Definitions

  • the present disclosure relates to a blower and a moving object.
  • Centrifugal blowers installed in moving bodies such as automobiles are conventionally known.
  • This type of blower includes a fan unit and a motor unit attached to the fan unit (see Patent Document 1, etc.).
  • the fan unit includes a centrifugal fan and a fan case that accommodates the centrifugal fan.
  • the motor unit includes a rotor, a stator, and a motor case that houses them.
  • An object of the present disclosure is to provide a blower and a moving object that can improve the heat dissipation of a motor unit included in the blower.
  • a blower includes a fan unit and a motor unit attached to the fan unit.
  • the fan unit includes a centrifugal fan including a hub and a plurality of blades, and a fan case that accommodates the centrifugal fan.
  • the motor unit includes a rotor including a rotating shaft connected to the centrifugal fan, a stator that rotates the rotor, and a motor case that accommodates the rotor and the stator.
  • the fan case has an opening for inserting a portion of the motor case into the fan case.
  • a vent is formed in the hub of the centrifugal fan.
  • a moving body includes the blower of the above aspect, an object to be cooled by the blower, and a vehicle body on which the blower and the object to be cooled are mounted.
  • the present disclosure has the effect of increasing the heat dissipation of the motor unit included in the blower.
  • FIG. 1 is a plan view of a blower according to an embodiment.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • FIG. 3 is a side view of the same blower.
  • FIG. 4 is a sectional view taken along line BB in FIG. 3.
  • FIG. 5 is an exploded perspective view of the same blower.
  • FIG. 6A is a perspective view of a substrate holder included in the blower.
  • FIG. 6B is a perspective view of a heat sink included in the blower.
  • FIG. 6C is a perspective view of an insulating sheet included in the blower.
  • FIG. 6D is a perspective view of a circuit board included in the blower.
  • FIG. 7 is a plan view of a centrifugal fan included in the blower.
  • FIG. 8 is a conceptual diagram of a moving body equipped with the same blower.
  • FIG. 9 is a sectional view of a modified example of the blower.
  • Embodiment A blower 1 according to an embodiment will be described in detail based on the accompanying drawings.
  • the blower 1 of the embodiment is suitably mounted on a moving body 9 such as an automobile (see FIG. 8), but it can also be mounted on various vehicles other than automobiles and other devices such as home appliances. Can be mounted.
  • FIG. 1 is a plan view of a blower 1 according to an embodiment.
  • FIG. 2 is a cross-sectional view taken along line AA in FIG.
  • FIG. 3 is a side view of the blower 1 of the embodiment.
  • the blower 1 of the embodiment includes a fan unit 12 and a motor unit 14.
  • the fan unit 12 and motor unit 14 are assembled integrally.
  • the motor unit 14 has a smaller outer shape than the fan unit 12.
  • Planar view here means the case seen in the direction along the axis C2 of the centrifugal fan 2 included in the fan unit 12.
  • the axial center C2 of the centrifugal fan 2 coincides with the axial center C4 of the rotating shaft 514 of the motor unit 14.
  • the fan unit 12 is a centrifugal fan unit.
  • the fan unit 12 takes in air along the axis C2 of the centrifugal fan 2.
  • the fan unit 12 is configured to exhaust air in a direction intersecting the axis C2 (in the embodiment, in a direction perpendicular to the axis C2).
  • the direction in which the motor unit 14 is positioned relative to the fan unit 12 matches the direction in which the fan unit 12 takes in air.
  • a part of the motor unit 14 is inserted inside the fan unit 12 in a state where the fan unit 12 and the motor unit 14 are assembled together.
  • Part of the motor unit 14 here includes a part 66 of the motor case 6, which will be described later.
  • the fan unit 12 includes a centrifugal fan 2 and a fan case 3 that rotatably accommodates the centrifugal fan 2.
  • the centrifugal fan 2 and fan case 3 are made of resin.
  • the centrifugal fan 2 may be made of metal.
  • the fan case 3 may be made of metal.
  • Centrifugal fan 2 includes a hub 21 and a plurality of blades 23.
  • the centrifugal fan 2 is a sirocco fan.
  • first direction D1 the direction of the first side of the centrifugal fan 2 along the axis C2
  • second direction D2 the direction of the second side of the centrifugal fan 2 along the axis C2
  • the hub 21 has a concave shape in the first direction D1. With the fan unit 12 and the motor unit 14 assembled together, a portion 66 of the motor case 6 is disposed inside the recess that the hub 21 has.
  • the center of the hub 21 is located closest to the first direction D1 of the entire hub 21.
  • the hub 21 includes a connecting portion 215 that constitutes a central portion of the hub 21 .
  • the connecting portion 215 is a cylindrical portion into which one end of the rotating shaft 514 in the axial direction (axial direction) is fitted.
  • the connecting portion 215 is open in the second direction D2.
  • the axis C2 of the centrifugal fan 2 is formed to pass through the center of the hub 21 (in other words, the connecting portion 215).
  • the hub 21 further includes a bottom wall portion 216, a peripheral wall portion 217, and a flange portion 218.
  • the bottom wall portion 216 is located so as to surround the entire circumference of the connecting portion 215 in a plan view.
  • the peripheral wall portion 217 is positioned so as to surround the entire circumference of the bottom wall portion 216 in a plan view.
  • the flange portion 218 is positioned so as to surround the entire circumference of the peripheral wall portion 217 in a plan view.
  • the connecting portion 215, the bottom wall portion 216, the peripheral wall portion 217, and the flange portion 218 of the hub 21 are formed continuously in this order outward in the radial direction of the hub 21.
  • the bottom wall portion 216 extends outward in the radial direction of the hub 21 from the outer peripheral portion of the connecting portion 215.
  • the entire bottom wall portion 216 is inclined such that the further away from the axis C2 the portion is located on the second direction D2 side.
  • the peripheral wall portion 217 extends outward in the radial direction of the hub 21 from the outer peripheral edge of the bottom wall portion 216 .
  • the entire peripheral wall portion 217 is inclined such that a portion farther from the axis C2 is located in the second direction D2.
  • the slope of the peripheral wall portion 217 and the slope of the bottom wall portion 216 are different from each other.
  • the angle of inclination of the peripheral wall portion 217 with respect to the axis C2 is smaller than the angle of inclination of the bottom wall portion 216 with respect to the axis C2.
  • the flange portion 218 extends radially outward from the outer peripheral edge of the peripheral wall portion 217 of the hub 21 .
  • Each blade 23 is provided integrally with the flange portion 218 of the hub 21. Each blade 23 extends from the flange portion 218 in a first direction D1. Each blade 23 has an arcuate outer shape in plan view. Each blade 23 includes an inner circumferential end near the axis C2 and an outer circumferential end far from the axis C2. The plurality of blades 23 are arranged at equal intervals in the circumferential direction surrounding the axis C2.
  • the fan case 3 will be explained.
  • the fan case 3 has an intake port 34 for sucking in outside air, a discharge port 35 for discharging air toward the external space, and a flow path 36 connecting the intake port 34 and the discharge port 35.
  • the intake port 34 has a circular shape
  • the discharge port 35 has a rectangular shape.
  • the fan case 3 includes a first member 31 forming one half of the fan case 3 and a second member 32 forming another half of the fan case 3.
  • the fan case 3 is configured by fitting the first member 31 and the second member 32 together.
  • the first member 31 constitutes a half of the fan case 3 on the first direction D1 side.
  • the second member 32 constitutes a half of the fan case 3 on the second direction D2 side.
  • the intake port 34 is included in the first member 31.
  • the intake port 34 is open in a first direction D1.
  • the discharge port 35 is open in a direction intersecting the axis C2 (in a direction perpendicular to the axis C2).
  • the discharge port 35 is formed when the first member 31 and the second member 32 are fitted together.
  • the flow path 36 forms a spiral surrounding the centrifugal fan 2 .
  • the flow path 36 is formed when the first member 31 and the second member 32 are fitted together.
  • the fan case 3 further includes a connecting portion 33 for connecting the motor unit 14.
  • the connecting portion 33 is included in the second member 32. When the first member 31 and the second member 32 are fitted together, the connecting portion 33 included in the second member 32 is located opposite to the intake port 34 included in the first member 31.
  • FIG. 5 is an exploded perspective view of the blower 1 of the embodiment.
  • the connecting portion 33 is a wall portion 38 located at a position facing the intake port 34.
  • the connection portion 33 may include a connection opening 30 surrounded by a wall portion 38.
  • the opening 30 is a circular opening located opposite the intake port 34.
  • the axis C2 of the centrifugal fan 2 is set to pass through the center of the opening 30.
  • the opening 30 is an opening for inserting a part 66 of the motor case 6 forming the outer shell of the motor unit 14 (in other words, a part of the motor unit 14) into the inside of the fan case 3.
  • the wall portion 38 is located around the opening 30.
  • the opening 30 is constituted by a hole passing through the center of the wall portion 38.
  • the connecting portion 33 further includes a protrusion 39 located surrounding the opening 30 and the wall portion 38.
  • the protrusion 39 is a rib-shaped portion included in the second member 32.
  • the protrusion 39 protrudes in the second direction D2.
  • the motor unit 14 is composed of a so-called inner rotor type brushless motor.
  • the motor unit 14 includes an electric mechanism 5 for rotating the centrifugal fan 2 and a motor case 6 that houses the electric mechanism 5.
  • the rotating shaft 514 is included in the electric mechanism 5.
  • Motor case 6 is made of metal. However, the motor case 6 may be made of resin.
  • the axial direction in which the axial center of the rotating shaft 514 extends is a direction along the axial center C4 of the rotating shaft 514.
  • the orientation of the first side of the rotating shaft 514 along the axis C4 matches the orientation of the first side of the centrifugal fan 2 along the axis C2. That is, the orientation of the first side is the first orientation D1.
  • the direction of the second side of the rotating shaft 514 along the axis C4 matches the direction of the second side of the centrifugal fan 2 along the axis C2. That is, the direction of the second side is the second direction D2.
  • the end of the rotating shaft 514 on the first direction D1 side is fitted into the connecting portion 215 of the centrifugal fan 2, so that the rotating shaft 514 and the centrifugal fan 2 are fixed to be rotatable together.
  • the motor case 6 is constructed by fitting a first member 61 and a second member 62 together.
  • the first member 61 has an opening opened in the second direction D2. As a result, the opening is closed by the second member 62 having a lid shape.
  • a bearing 681 is arranged on the first member 61 .
  • a bearing 682 is arranged on the second member 62.
  • the bearing 681 rotatably supports the axially intermediate portion of the rotating shaft 514.
  • the bearing 682 rotatably supports the end of the rotating shaft 514 on the second direction D2 side.
  • the motor case 6 includes a small diameter portion 63 that constitutes the end of the motor case 6 on the first direction D1 side, and a large diameter portion 64 that is continuous to the small diameter portion 63 via a step.
  • the small diameter portion 63 is a cylindrical portion.
  • the large diameter portion 64 is a cylindrical portion having a larger diameter than the small diameter portion 63.
  • a small diameter portion 63 and a large diameter portion 64 are included in the first member 61 .
  • a portion 66 of the motor case 6 inserted into the inside of the fan case 3 includes at least a portion of the small diameter portion 63.
  • the electric mechanism 5 housed in the motor case 6 includes a rotor 51 and a stator 53.
  • Rotor 51 includes a rotor core 511 in which magnets are arranged, and a rotating shaft 514 connected to rotor core 511. An end of the rotating shaft 514 on the first direction D1 side protrudes to the outside of the motor case 6. The remaining portion of the rotating shaft 514 is housed in the motor case 6.
  • FIG. 3 is a side view of the blower 1 of the embodiment.
  • FIG. 4 is a sectional view taken along line BB in FIG. 3.
  • stator 53 includes a stator core 531 and a winding 533 wound around the stator core 531.
  • the stator 53 is arranged radially outward with respect to the rotor 51.
  • the stator 53 is configured to supply magnetic force to rotate the rotor 51.
  • Stator core 531 includes a plurality of stacked electromagnetic steel plates.
  • the circuit board 57 is configured to control energization to the stator 53.
  • the circuit board 57 is arranged closer to the second direction D2 than the rotor 51 and the stator 53.
  • the rotor 51 and stator 53 are arranged inside the small diameter portion 63 of the motor case 6. That is, the rotor 51 and the stator 53 are housed in a portion 66 of the motor case 6 that is inserted into the fan case 3 through the opening 30. Stator 53 can conduct heat to a portion 66 of motor case 6 .
  • the stator 53 and a portion 66 of the motor case 6 are thermally coupled. More specifically, as shown in FIG. 4, the outer circumferential surface of the stator core 531 is in contact with the inner circumferential surface of a portion 66 of the motor case 6 in a thermally conductive manner. Part 66 of motor case 6 and stator core 531 may be thermally coupled by direct contact. Part 66 of motor case 6 and stator core 531 may be thermally coupled with a thermally conductive member interposed therebetween.
  • the stator 53 is in contact with the inner peripheral surface of the small diameter portion 63 of the motor case 6.
  • the heat transferred from the stator 53 to the motor case 6 can be dissipated, for example, through the outer peripheral surface of the small diameter portion 63.
  • the small diameter portion 63 of the motor case 6 and the stator core 531 may be in direct contact and thermally coupled.
  • the small diameter portion 63 of the motor case 6 and the stator core 531 may be thermally coupled with a thermally conductive member interposed therebetween.
  • the electric mechanism 5 further includes a board holder 54, a heat sink 55, an insulating sheet 56, and a circuit board 57.
  • FIG. 6A is a perspective view of the substrate holder 54 included in the blower 1 of the embodiment. As shown in FIG. 6A, the substrate holder 54 has an annular shape in plan view. The outer diameter of the substrate holder 54 is larger than the outer diameter of the stator 53. The outer diameter of the board holder 54 is larger than the outer diameter of the small diameter portion 63 of the motor case 6.
  • FIG. 6B is a perspective view of the heat sink 55 included in the blower 1 of the embodiment.
  • the heat sink 55 has an annular shape in plan view. It is preferable that the heat sink 55 is made of metal.
  • the outer diameter of the heat sink 55 is larger than the outer diameter of the stator 53.
  • the outer diameter of the heat sink 55 is larger than the outer diameter of the small diameter portion 63 of the motor case 6.
  • the substrate holder 54 and the heat sink 55 are positioned to overlap.
  • FIG. 6C is a perspective view of the insulating sheet 56 included in the blower 1 of the embodiment.
  • the insulating sheet 56 has an annular shape in plan view.
  • the outer diameter of the insulating sheet 56 is larger than the outer diameter of the stator 53.
  • the outer diameter of the insulating sheet 56 is larger than the outer diameter of the small diameter portion 63 of the motor case 6.
  • the inner diameter of the insulating sheet 56 is smaller than the inner diameter of the substrate holder 54.
  • the inner diameter of the insulating sheet 56 is smaller than the inner diameter of the heat sink 55.
  • the radially outer portion of the insulating sheet 56 is located overlapping the substrate holder 54 and the heat sink 55.
  • FIG. 6D is a perspective view of a circuit board included in the blower 1 of the embodiment.
  • the circuit board 57 has an annular shape in plan view.
  • the outer diameter of the circuit board 57 is larger than the outer diameter of the stator 53.
  • the outer diameter of the circuit board 57 is larger than the outer diameter of the small diameter portion 63 of the motor case 6.
  • the inner diameter of the circuit board 57 is smaller than the inner diameter of the board holder 54.
  • the inner diameter of the circuit board 57 is smaller than the inner diameter of the heat sink 55.
  • the inner diameter of the circuit board 57 is smaller than the inner diameter of the insulating sheet 56.
  • the radially outer portion of the circuit board 57 is located overlapping the board holder 54, the heat sink 55, and the insulating sheet 56.
  • the board holder 54, the heat sink 55, the insulating sheet 56, and the circuit board 57 are arranged inside the large diameter portion 64 of the motor case 6. That is, the board holder 54, the heat sink 55, the insulating sheet 56, and the circuit board 57 are housed in a portion 67 of the motor case 6 that is located closer to the second direction D2 than the portion 66.
  • the portion 67 is a portion of the motor case 6 that is not inserted into the inside of the fan case 3 when the fan unit 12 and the motor unit 14 are assembled together.
  • the substrate holder 54, the heat sink 55, the insulating sheet 56, and the circuit board 57 are positioned overlapping in this order.
  • the heat sink 55 can conduct heat to the portion 67 of the motor case 6.
  • the circuit board 57 can conduct heat to a portion 67 of the motor case 6 via the insulating sheet 56 and the heat sink 55.
  • the heat sink 55 is in contact with the inner peripheral surface of the large diameter portion 64 of the motor case 6 .
  • the heat transferred from the circuit board 57 to the motor case 6 via the insulating sheet 56 and the heat sink 55 can be dissipated, for example, through the outer peripheral surface of the large diameter portion 64.
  • Ventilation Ports As shown in FIGS. 1, 5, and 7, a plurality of ventilation holes 25 are formed in the hub 21 of the centrifugal fan 2.
  • the plurality of vent holes 25 are located in the hub 21 at equal intervals in the circumferential direction surrounding the axis C2.
  • the plurality of vent holes 25 are six vent holes 25.
  • each vent 25 is formed in an arc shape centered on the axis C2.
  • Each vent 25 is a hole that penetrates the hub 21 in the axial direction of the centrifugal fan 2 .
  • the axial direction of the centrifugal fan 2 is a direction along the axial center C2 of the centrifugal fan 2.
  • FIG. 7 is a plan view of the centrifugal fan 2 included in the blower 1 of the embodiment.
  • the hub 21 of the centrifugal fan 2 includes a radially inner half 211 (hereinafter referred to as the "inner half 211") of the hub 21 that is close to the axis C2, and a radially inner half 211 of the hub 21 that is close to the axis C2. It can be conceptually divided into a far radially outer half 213 (hereinafter referred to as "outer half 213").
  • the inner half 211 and the outer half 213 included in the hub 21 are provided continuously with each other.
  • the radius centered on the axis C2 of the inner half 211 of the hub 21 can be defined as, for example, 1/2 of the radius centered on the axis C4 of the motor unit 14.
  • the outer half 213 of the hub 21 can be defined as the portion of the hub 21 excluding the inner half 211. The distance of any portion included in the outer half portion 213 from the axis C2 is greater than 1/2 of the radius of the motor unit 14.
  • the outer half 213 of the hub 21 has a plurality of vent holes 25 .
  • Each vent hole 25 is provided at the outer peripheral edge portion of the bottom wall portion 216 of the hub 21 .
  • only some of the plurality of vent holes 25 may be provided at the outer peripheral edge portion of the bottom wall portion 216.
  • All or part of the plurality of vent holes 25 may be provided in other parts of the bottom wall portion 216.
  • All or part of the plurality of vent holes 25 may be provided in the peripheral wall portion 217 of the hub 21. All or part of the plurality of vent holes 25 may be provided over a part of the bottom wall part 216 and a part of the peripheral wall part 217.
  • each vent 25 is open toward a portion 66 of the motor case 6 inserted inside the fan case 3.
  • Each vent 25 is open toward a radially outer portion of a portion 66 of the motor case 6 .
  • each vent 25 is open toward the small diameter portion 63 of the motor case 6.
  • Each vent 25 is open toward a radially outer portion of the small diameter portion 63 of the motor case 6 .
  • FIG. 1 when the blower 1 of the embodiment is viewed in the second direction D2, a portion of the small diameter portion 63 of the motor case 6 is exposed through each vent 25 of the centrifugal fan 2.
  • the heat generated by the motor unit 14 during operation is effectively absorbed by the air flow inside the fan case 3 that is generated through each vent 25 of the centrifugal fan 2 as the centrifugal fan 2 rotates. can be dissipated.
  • the air flows in the second direction D2 along the outer circumference of the portion 66 of the motor case 6. Thereafter, the air is guided along the flow path 36 of the fan case 3 to the outlet 35.
  • the air that has flowed in the second direction D2 through the plurality of vents 25 of the centrifugal fan 2 flows along the outer circumferential portion of the small diameter portion 63 of the motor case 6 . Thereafter, the air is guided along the flow path 36 of the fan case 3 to the outlet 35.
  • the heat generated in the stator 53 is transmitted to the outer peripheral surface of the portion 66 of the motor case 6.
  • heat generated in the stator 53 is efficiently dissipated by the air flowing through each vent 25.
  • FIG. 8 is a conceptual diagram of a mobile body 9 equipped with the blower 1 of the embodiment.
  • the moving body 9 includes the above-described blower 1, an object 91 to be cooled by the blower 1, and a vehicle body 97 on which the blower 1 and the object to be cooled 91 are mounted.
  • the object to be cooled 91 is, for example, a battery 92.
  • the moving body 9 of the embodiment is a hybrid four-wheeled vehicle that includes a plurality of wheels 93 and an engine 94 and a motor 95 for rotationally driving these wheels.
  • Battery 92 is configured to supply power to motor 95.
  • the mobile object 9 may be, for example, another type of four-wheeled vehicle such as an electric vehicle.
  • the moving body 9 on which the blower 1 is mounted is not limited to a four-wheeled vehicle.
  • the moving object 9 may be a vehicle (automobile) such as a two-wheeled vehicle or a three-wheeled vehicle.
  • the object to be cooled 91 may be a part other than the battery 92.
  • blower 1 of the modified example the same components as those of the blower 1 of the above-described embodiment are given the same reference numerals, and detailed description thereof will be omitted.
  • FIG. 9 is a cross-sectional view of a modified example of the blower 1.
  • the motor unit 14 further includes heat radiation fins 65.
  • the heat radiation fins 65 are provided on the outer surface of the motor case 6.
  • the radiation fins 65 are provided on the outer surface of a portion 66 of the motor case 6 inserted into the fan case 3 .
  • the radiation fins 65 are provided on the outer peripheral surface of the small diameter portion 63 of the motor case 6 .
  • the radiation fin 65 includes, for example, a plurality of plates 651 extending along the axis C2. It is preferable that the plurality of plates 651 are arranged at a distance in the circumferential direction about the axis C2. It is preferable that the heat radiation fins 65 be attached to the motor case 6 using a fixture such as a screw.
  • the configuration of the radiation fins 65 is not limited to this, and any suitable configuration may be provided.
  • the blower (1) includes a fan unit (12) and a motor unit (14) attached to the fan unit (12).
  • the fan unit (12) includes a centrifugal fan (2) including a hub (21) and a plurality of blades (23), and a fan case (3) that accommodates the centrifugal fan (2).
  • the motor unit (14) includes a rotor (51) including a rotating shaft (514) connected to the centrifugal fan (2), a stator (53) that rotates the rotor (51), and a rotor (51) and a stator (53). ) and a motor case (6).
  • the fan case (3) is formed with an opening (30) through which a portion (66) of the motor case (6) is inserted into the fan case (3).
  • a vent hole (25) is formed in the hub (21) of the centrifugal fan (2).
  • blower (1) when the centrifugal fan (2) rotates, air flows in through the vent (25) formed in the hub (21) of the centrifugal fan (2).
  • the heat of the motor unit (14) is dissipated by this air flow. Therefore, the heat dissipation of the motor unit (14) is improved.
  • the hub (21) has an inner half (211) close to the axis (C2) of the hub (21) and an inner half (211) from the axis (C2). a far outer half (213).
  • a vent hole (25) is formed in the outer half (213).
  • blower (1) compared to the case where the vent (25) is formed in the inner half (211) of the hub (21), air flows in through the vent (25). The amount of increases. Therefore, the heat dissipation of the motor unit (14) is improved.
  • the vent (25) is a part (66) of the motor case (6) inserted into the inside of the fan case (3). It is open to the public.
  • the heat of the part (66) of the motor case (6) is efficiently dissipated by the flow of air through the vent (25) of the hub (21). be able to.
  • a part (66) of the motor case (6) is thermally coupled to the stator (53).
  • the heat generated in the stator (53) can be efficiently dissipated by the flow of air through the vent (25) of the hub (21).
  • the motor unit (14) has a heat radiation fin (65) provided on the outer surface of the motor case (6). It also has.
  • the air flow generated through the vent (25) of the hub (21) efficiently dissipates the heat of the motor unit (14) via the heat radiation fin (65). can be dissipated.
  • the radiation fins (65) are arranged on the outer surface of a part (66) of the motor case (6) inserted inside the fan case (3). , is provided.
  • heat in a portion (66) of the motor case (6) can be efficiently dissipated via the heat radiation fins (65).
  • a moving body (9) according to a seventh aspect includes the blower (1) according to any one of the first to sixth aspects, an object (91) to be cooled by the blower (1), the blower (1) and the object to be cooled.
  • the moving body (9) when the centrifugal fan (2) rotates, air flows in through the vent (25) provided in the hub (21) of the centrifugal fan (2).
  • the heat of the motor unit (14) is dissipated by this air flow. Therefore, the heat dissipation of the motor unit (14) is improved, and in turn, the heat dissipation of the blower (1) is improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
PCT/JP2023/009979 2022-03-31 2023-03-15 送風機及び移動体 Ceased WO2023189572A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2024511740A JPWO2023189572A1 (https=) 2022-03-31 2023-03-15
CN202380029459.1A CN118922632A (zh) 2022-03-31 2023-03-15 风机及移动体

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022061190 2022-03-31
JP2022-061190 2022-03-31

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Publication number Priority date Publication date Assignee Title
WO2025211087A1 (ja) * 2024-04-04 2025-10-09 パナソニックＩｐマネジメント株式会社 送風機及び移動体

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JP2001295788A (ja) * 2000-04-14 2001-10-26 Daikin Ind Ltd ファンモータ一体型送風機
JP2004353510A (ja) * 2003-05-28 2004-12-16 Daikin Ind Ltd 遠心送風機及び遠心送風機を備えた空気調和装置
JP2015048754A (ja) * 2013-08-30 2015-03-16 シナノケンシ株式会社 送風機
WO2016059776A1 (ja) * 2014-10-14 2016-04-21 パナソニックＩｐマネジメント株式会社 遠心送風機およびそれを備えた自動車

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JP2001295788A (ja) * 2000-04-14 2001-10-26 Daikin Ind Ltd ファンモータ一体型送風機
JP2004353510A (ja) * 2003-05-28 2004-12-16 Daikin Ind Ltd 遠心送風機及び遠心送風機を備えた空気調和装置
JP2015048754A (ja) * 2013-08-30 2015-03-16 シナノケンシ株式会社 送風機
WO2016059776A1 (ja) * 2014-10-14 2016-04-21 パナソニックＩｐマネジメント株式会社 遠心送風機およびそれを備えた自動車

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025211087A1 (ja) * 2024-04-04 2025-10-09 パナソニックＩｐマネジメント株式会社 送風機及び移動体

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