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WO2016158154A1 - Dispositif de soufflante - Google Patents

Dispositif de soufflante Download PDF

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Publication number
WO2016158154A1
WO2016158154A1 PCT/JP2016/056124 JP2016056124W WO2016158154A1 WO 2016158154 A1 WO2016158154 A1 WO 2016158154A1 JP 2016056124 W JP2016056124 W JP 2016056124W WO 2016158154 A1 WO2016158154 A1 WO 2016158154A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling air
motor
air
blower
brushless motor
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/JP2016/056124
Other languages
English (en)
Japanese (ja)
Inventor
落合　利徳
知久 江坂
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.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Priority to JP2017509418A priority Critical patent/JP6447713B2/ja
Publication of WO2016158154A1 publication Critical patent/WO2016158154A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Definitions

  • This disclosure relates to a blower that drives a fan with a brushless motor.
  • Patent Document 1 Conventionally, as this type of blower, for example, there is one described in Patent Document 1.
  • the blower described in Patent Literature 1 drives a fan with a motor with a brush to generate an air flow, and cools the motor by guiding part of the blown air from the fan into the motor. ing.
  • the present disclosure is directed to a blower using an inner rotor type brushless motor, in which the inside of the motor is surrounded by the cooling air without causing adverse effects due to dust in the cooling air on the electric circuit components in the motor.
  • the purpose is to allow cooling.
  • an inner rotor type brushless motor in which an electric circuit is arranged in a bottomed cylindrical casing, and a fan that is driven by the brushless motor to generate an air flow are provided. And a part of the air blown by the fan passes through the outer peripheral side of the housing as cooling air.
  • the coil as a heating element is connected to the casing through the core, the heat of the coil passes through the outer periphery of the casing through the core and the casing. Is transmitted to. Therefore, the coil is cooled, and thus the inside of the motor is cooled, and the electric circuit components built in the motor can be protected.
  • FIG. 2 is a sectional view taken along the line II-II in FIG.
  • FIG. 3 is a view showing a section taken along the line III-III in FIG.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 2.
  • FIG. 5 is a VV cross-sectional view of a holder cylinder portion in the motor and motor holder of FIG. 3.
  • FIG. 4 is a VI-VI cross-sectional view of the motor and motor holder of FIG. 3. It is a figure which shows the temperature characteristic of the air blower which concerns on 1st Embodiment, and the conventional air blower.
  • FIG. 11 is a cross-sectional view taken along the line II-II in FIG.
  • FIG. 5 is a VV cross-sectional view of FIG.
  • FIG. 5 is a VV cross-sectional view of FIG.
  • FIG. 4 is a diagram illustrating a sectional view taken along the line III-III in FIG.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.
  • FIG. 3 is shown by rotating the drawing so that a rotation axis center line of a brushless motor 1 to be described later is in the vertical direction of the drawing for easy understanding.
  • the blower includes a brushless motor 1, a motor holder 2, a fan 3, a scroll case 4, and a cover case 5 as main components.
  • the brushless motor 1 is an inner rotor type.
  • the motor holder 2 holds the brushless motor 1.
  • the fan 3 is driven by the brushless motor 1 to generate an air flow.
  • the scroll case 4 forms a spiral air passage 41 through which air blown by the fan 3 flows.
  • the cover case 5 covers the air suction port 42 in the scroll case 4.
  • the scroll case 4 corresponds to a fan case.
  • This blower is attached to the lower surface of the ceiling 6 of the vehicle, and more specifically, is disposed between the ceiling 6 and roof lining (not shown), and is used as a circulator for circulating the air in the vehicle interior.
  • Resin scroll case 4 is formed by joining upper case 4a and lower case 4b.
  • the upper case 4 a is interposed between the ceiling 6 and the brushless motor 1.
  • the upper case 4 a prevents heat transfer between the ceiling 6 and the brushless motor 1 so that the brushless motor 1 is not easily affected by the heat of the ceiling 6.
  • the air suction port 42 of the scroll case 4 is opened toward the lower side of the vehicle so that the sucked air is less affected by the heat of the ceiling 6.
  • Resin fan 3 is arranged in scroll case 4.
  • the fan 3 is a centrifugal fan that includes a large number of blades, sucks air in the axial direction, and blows air outward in the radial direction. Note that the arrows in FIG. 4 indicate the flow of air blown by the fan 3.
  • the cooling case 4 is formed in the scroll case 4 so that a part of the air blown by the fan 3 is diverted from the blow passage 41.
  • the cooling air intake 43 is disposed immediately after the tongue portion having the highest static pressure in the air passage 41.
  • the brushless motor 1 is disposed in a columnar space in the center of the fan 3. Further, the brushless motor 1 includes a bottomed cylindrical casing 11 made of metal, and the casing 11 is a casing that closes the cylindrical casing cylinder portion 111 and both end openings of the casing cylinder portion 111. A bottom 112 is provided.
  • a bearing 12 is disposed on each of the casing bottom portions 112, and a rotating shaft 13 is rotatably supported by these bearings 12.
  • a permanent magnet rotor 14 is fixed to the rotary shaft 13. The rotor 14 is disposed in the housing 11.
  • An opening 112a is formed in the central portion of the lower casing bottom 112 in the radial direction, and the lower end surface of the lower bearing 12 is exposed to the outside of the casing 11 through the opening 112a.
  • the upper end of the rotating shaft 13 protrudes to the outside of the housing 11, and the fan 3 is joined to the protruding portion.
  • a cylindrical stator 15 in which a coil 152 is wound around a core 151 is disposed so as to surround the rotor 14.
  • Each of these stators 15 has a core 151 and a coil 152.
  • These cores 151 are arranged in the casing 11 in a state where the cores 151 are in contact with the inner peripheral surface of the casing cylinder portion 111.
  • a plurality of these coils 152 are arranged along the motor circumferential direction (that is, the motor rotation direction).
  • a circuit board 16 as an electric circuit is disposed below the rotor 14 and the stator 15 in the housing 11.
  • the circuit board 16 is mounted with a motor drive circuit for controlling energization to the coil 152 according to the rotational position of the rotor 14, a motor protection circuit, and the like. Further, the circuit board 16 is disposed on the lower side of the vehicle in the housing 11 so as not to be affected by the heat of the ceiling 6.
  • the resin motor holder 2 is integrated with the lower case 4b so as to close the opening of the lower case 4b in the scroll case 4 and to cover the lower end side of the fan 3.
  • the motor holder 2 includes a cylindrical holder tube portion 21, and the holder tube portion 21 is inserted into the space in the center of the fan 3.
  • the housing 11 is disposed in the holder tube portion 21, and the cooling air passage 7 through which the motor cooling air is circulated is formed between the inner peripheral surface of the holder tube portion 21 and the outer peripheral surface of the housing tube portion 111. Has been.
  • a rib 22 that protrudes from the inner peripheral surface of the holder tube portion 21 and extends along the motor rotation axis direction is formed on the inner periphery side of the holder tube portion 21.
  • a plurality of these ribs 22 are arranged along the circumferential direction of the motor, and divide the cooling air passage 7 into a plurality.
  • the same number of ribs 22 as the coils 152 are provided, and the ribs 22 and the coils 152 are arranged so as to be shifted in the motor circumferential direction.
  • the rib 22 is disposed at a position that does not overlap the coil 152 in the motor radial direction.
  • the brushless motor 1 is press-fitted into the rib 22 and held by the motor holder 2. Therefore, a screw is unnecessary, and the assembly property of the brushless motor 1 to the motor holder 2 is improved.
  • the brushless motor 1 may be held by a screw screwed into the holder tube portion 21.
  • the motor holder 2 is provided with a cooling air guide part 23.
  • the cooling air guide portion 23 forms a cooling air introduction path 24 that guides the air diverted to the cooling air intake port 43 side to the cooling air passage 7.
  • a part of the air blown by the fan 3 is introduced into the cooling air introduction passage 24 from the cooling air intake port 43 as motor cooling air, and further passes through the cooling air passage 7.
  • the exhaust passage 41 is exhausted to the suction side of the fan 3 where the static pressure is lowest.
  • the cooling air guide 23 and the cooling air introduction path 24 are arranged below the scroll case 4.
  • the scroll case 4 prevents heat transfer between the motor cooling air passing through the cooling air introduction path 24 and the ceiling 6. Therefore, the motor cooling air is made difficult to be affected by the heat of the ceiling 6.
  • the motor holder 2 includes a cylindrical partition wall 25 that is fitted to the lower casing bottom 112.
  • the partition portion 25 holds the brushless motor 1 in cooperation with the rib 22.
  • the partition wall 25 separates the lower end side of the lower bearing 12 from the cooling air passage 7 and the cooling air introduction passage 24. This prevents the motor cooling air containing dust from flowing into the partition wall portion 25, and prevents dust from reaching the lower bearing 12 through the opening 112 a of the housing bottom portion 112.
  • the upper case 4 a interposed between the ceiling 6 and the brushless motor 1 prevents heat transfer between the ceiling 6 and the brushless motor 1. Therefore, the temperature rise of the brushless motor 1 due to the heat of the ceiling 6 can be prevented.
  • the horizontal axis indicates the continuous operation time of the brushless motor 1
  • the vertical axis indicates the temperature of each part.
  • the temperature of the coil 152 and the IC of the circuit board 16 at the time when the brushless motor 1 is continuously operated for about 30 minutes is the air blower according to the present embodiment that cools the brushless motor 1. It was confirmed that the temperature decreased by about 12 ° C. compared to the conventional blower that does not cool the brushless motor 1.
  • the interior of the brushless motor 1 is cooled by the air for cooling the motor, and the electric circuit components of the circuit board 16 built in the brushless motor 1 can be protected.
  • the motor cooling air does not pass through the inside of the brushless motor 1, it is possible to prevent the electric circuit components of the circuit board 16 in the brushless motor 1 from being adversely affected by dust in the motor cooling air. .
  • the motor cooling air flows in the direction of the arrow A in the cooling air introduction path 24 shown in FIG.
  • the flow is changed in the direction perpendicular to the paper surface of FIG.
  • the motor cooling air easily flows into the cooling air passage 7a on the side close to the motor cooling air inflow side, and the cooling on the side far from the motor cooling air inflow side. Motor cooling air hardly flows into the air passage 7b. That is, variations in the passing air volume occur between the cooling air passages 7.
  • the passage area of the cooling air passage 7b on the side far from the inflow side of the motor cooling air is made larger than the passage area of the cooling air passage 7a on the side close to the inflow side of the motor cooling air. ing. Thereby, the dispersion
  • the same effect as that of the first embodiment can be obtained. Further, it is possible to reduce the variation in the amount of passing air between the cooling air passages 7 and to cool the brushless motor 1 evenly in the entire motor circumferential direction.
  • casing 11 of the brushless motor 1 is a bottomed cylindrical shape.
  • the housing 11 may have a bottomed cylindrical shape other than the bottomed cylindrical shape.
  • the housing 11 may have a bottomed cylindrical shape with an oval cross section.
  • three ribs 22 projecting from the inner peripheral surface of the holder tube portion 21 and extending along the motor rotation axis direction are formed on the inner periphery side of the holder tube portion 21. It may be.
  • a plurality of these ribs 22 are arranged at equal intervals of 120 ° along the circumferential direction of the motor, and divide the cooling air passage 7 into three regions. Further, the number of the ribs 22 is smaller than that of the coil 152. Further, the rib 22 and the coil 152 are arranged so as to be shifted in the motor circumferential direction.
  • Each of these three ribs 22 has a triangular cross section cut by an arbitrary plane perpendicular to the motor rotation axis. Each of the three ribs is in contact with the casing cylinder portion 111 of the brushless motor 1 at one of the apexes of the triangle.
  • each of these three ribs 22 may have a shape with a bifurcated tip as shown in FIG.
  • Each of the three ribs 22 shown in FIG. 11 protrudes from the inner peripheral surface of the holder cylindrical portion 21 to the inner peripheral side of the holder cylindrical portion 21, and further branches into two, which are separated from each other. It extends in an arc in the direction. And the part which is not the front-end
  • the air blower of the above embodiment may be configured as shown in FIGS. Specifically, the upper end portion of the rotating shaft 13 of the present embodiment is fixed to the inner peripheral surface of the annular bush 13a by press-fitting. The outer peripheral surface of the bush 13a is fixed to the fan 3 by bonding or the like. Therefore, the upper end part of the rotating shaft 13 is being fixed to the fan 3 via the bush 13a.
  • the bearing 12 that supports the upper end of the rotating shaft 13 is a ball bearing.
  • the bearing 12 that supports the lower end of the rotating shaft 13 is also a ball bearing.
  • the partition wall 25 included in the motor holder 2 is not fitted into the housing bottom 112, but is disposed directly below the lower end surface of the housing bottom 112.
  • the outer peripheral diameter of the partition part 25 is the same as the outer peripheral diameter of the downward protrusion part which protrudes below in the housing
  • FIG. The spring 26 is disposed at a position surrounding the downward projecting portion and the partition wall 25.
  • the lower end of the spring 26 comes into contact with a portion of the motor holder 2 surrounding the base of the partition wall 25. Further, the upper end of the spring 26 abuts on a portion of the housing bottom 112 surrounding the base of the downward projecting portion. Thereby, the spring 26 exerts an upward force on the casing 11 of the brushless motor 1.
  • the casing 11 is pressed against the upper surface of the motor holder 2 by such an urging force. Therefore, the possibility that the brushless motor 1 rattles up and down in the motor holder 2 due to the dimensional tolerance of the length of the casing 11 in the vertical direction can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un dispositif de soufflante qui est pourvu : d'un moteur sans balais de type à rotor interne (1) comportant un circuit électrique (16) disposé à l'intérieur d'un boîtier cylindrique à extrémité fermée (11) ; et d'un ventilateur (3) entraîné par le moteur sans balais pour générer un flux d'air. Le dispositif de soufflante est conçu de telle sorte qu'une partie de l'air soufflé par le ventilateur passe en tant qu'air de refroidissement à travers le côté périphérique externe du boîtier.
PCT/JP2016/056124 2015-03-30 2016-02-29 Dispositif de soufflante Ceased WO2016158154A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017509418A JP6447713B2 (ja) 2015-03-30 2016-02-29 送風装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-069616 2015-03-30
JP2015069616 2015-03-30

Publications (1)

Publication Number Publication Date
WO2016158154A1 true WO2016158154A1 (fr) 2016-10-06

Family

ID=57005620

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/056124 Ceased WO2016158154A1 (fr) 2015-03-30 2016-02-29 Dispositif de soufflante

Country Status (2)

Country Link
JP (1) JP6447713B2 (fr)
WO (1) WO2016158154A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018221062A1 (fr) * 2017-05-30 2018-12-06 株式会社デンソー Soufflante centrifuge
JP2018204602A (ja) * 2017-05-30 2018-12-27 株式会社デンソー 遠心送風機
WO2019003786A1 (fr) * 2017-06-26 2019-01-03 株式会社デンソー Soufflante centrifuge
WO2021177404A1 (fr) * 2020-03-04 2021-09-10 三菱重工エンジン＆ターボチャージャ株式会社 Machine électrique rotative
WO2023188813A1 (fr) * 2022-03-31 2023-10-05 パナソニックＩｐマネジメント株式会社 Soufflante et corps mobile
US11873824B2 (en) 2021-02-05 2024-01-16 Techtronic Cordless Gp Blower

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0728707U (ja) * 1993-11-05 1995-05-30 株式会社ゼクセル 車両用送風装置
JP2000060069A (ja) * 1998-08-05 2000-02-25 Matsushita Electric Ind Co Ltd 電気機器
JP2003328997A (ja) * 2002-05-13 2003-11-19 Toyo Radiator Co Ltd ファンモータの冷却装置
JP2011223794A (ja) * 2010-04-13 2011-11-04 Mitsubishi Electric Corp モータ、換気扇、熱交換ユニット
JP2012060832A (ja) * 2010-09-10 2012-03-22 Denso Corp 負荷駆動制御装置の放熱構造
JP2014101036A (ja) * 2012-11-20 2014-06-05 Denso Corp 車両用空調装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0728707U (ja) * 1993-11-05 1995-05-30 株式会社ゼクセル 車両用送風装置
JP2000060069A (ja) * 1998-08-05 2000-02-25 Matsushita Electric Ind Co Ltd 電気機器
JP2003328997A (ja) * 2002-05-13 2003-11-19 Toyo Radiator Co Ltd ファンモータの冷却装置
JP2011223794A (ja) * 2010-04-13 2011-11-04 Mitsubishi Electric Corp モータ、換気扇、熱交換ユニット
JP2012060832A (ja) * 2010-09-10 2012-03-22 Denso Corp 負荷駆動制御装置の放熱構造
JP2014101036A (ja) * 2012-11-20 2014-06-05 Denso Corp 車両用空調装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018221062A1 (fr) * 2017-05-30 2018-12-06 株式会社デンソー Soufflante centrifuge
JP2018204602A (ja) * 2017-05-30 2018-12-27 株式会社デンソー 遠心送風機
WO2019003786A1 (fr) * 2017-06-26 2019-01-03 株式会社デンソー Soufflante centrifuge
JP2019007426A (ja) * 2017-06-26 2019-01-17 株式会社デンソー 遠心送風機
WO2021177404A1 (fr) * 2020-03-04 2021-09-10 三菱重工エンジン＆ターボチャージャ株式会社 Machine électrique rotative
CN115053435A (zh) * 2020-03-04 2022-09-13 三菱重工发动机和增压器株式会社 旋转电机
DE112021000314B4 (de) * 2020-03-04 2025-10-23 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Elektrische drehmaschine
US11873824B2 (en) 2021-02-05 2024-01-16 Techtronic Cordless Gp Blower
WO2023188813A1 (fr) * 2022-03-31 2023-10-05 パナソニックＩｐマネジメント株式会社 Soufflante et corps mobile

Also Published As

Publication number Publication date
JPWO2016158154A1 (ja) 2017-07-27
JP6447713B2 (ja) 2019-01-09

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