US20140377096A1 - Motor-driven compressor - Google Patents

Motor-driven compressor Download PDF

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Publication number
US20140377096A1
US20140377096A1 US14/312,868 US201414312868A US2014377096A1 US 20140377096 A1 US20140377096 A1 US 20140377096A1 US 201414312868 A US201414312868 A US 201414312868A US 2014377096 A1 US2014377096 A1 US 2014377096A1
Authority
US
United States
Prior art keywords
capacitor
retainer
motor
driven compressor
retaining pieces
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.)
Abandoned
Application number
US14/312,868
Other languages
English (en)
Inventor
Junya Yano
Akio Fujii
Junichi Takahata
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.)
Toyota Industries Corp
Original Assignee
Toyota Industries 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 Toyota Industries Corp filed Critical Toyota Industries Corp
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI reassignment KABUSHIKI KAISHA TOYOTA JIDOSHOKKI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJII, AKIO, TAKAHATA, JUNICHI, YANO, JUNYA
Publication of US20140377096A1 publication Critical patent/US20140377096A1/en
Abandoned 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
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics

Definitions

  • the present invention relates to a motor-driven compressor that includes a compression unit, which compresses refrigerant, an electric motor, which drives the compression unit, and a motor driving circuit, which drives the electric motor.
  • the motor-driven compressor includes a motor driving circuit, which includes a planer circuit board and a plurality of electric components of various types.
  • the electric components which are electrically connected to the circuit board, include a switching element and a plurality of capacitors, for example.
  • the capacitors are provided on the circuit board. Each capacitor is held by a capacitor holder.
  • a motor-driven compressor including: a compression unit, an electric motor, a housing, a motor driving circuit, and a capacitor holder.
  • the compression unit is adapted to compress refrigerant.
  • the electric motor is adapted to drive the compression unit.
  • the housing accommodates the compression unit and the electric motor.
  • the motor driving circuit is adapted to drive the electric motor and includes a circuit board and a capacitor that is electrically connected to the circuit board.
  • the capacitor holder is made of a plastic and holds the capacitor.
  • the capacitor holder includes a side wall body, and a first retainer and a second retainer. The side wall body covers the side surfaces of the capacitor.
  • the first retainer extends from the side wall body toward the circuit board and engages with a first end surface of the capacitor to hold the capacitor.
  • the second retainer extends from the side wall body in the direction away from the circuit board and engages with a second end surface of the capacitor to hold the capacitor.
  • the length of the second retainer in the extending direction of the second retainer is greater than the length of the first retainer in the extending direction of the first retainer.
  • the second retainer is elastically deformed so that the capacitor holder accommodates the capacitor.
  • FIG. 1 is a partial cross-sectional view showing a motor-driven compressor according to one embodiment
  • FIG. 2 is an exploded perspective view showing a capacitor holder, in which film capacitors are held, a coupling base, and a circuit board;
  • FIG. 3 is a longitudinal cross-sectional view showing the film capacitor and the capacitor holder
  • FIG. 4 is a longitudinal cross-sectional view showing the state where the film capacitor is inserted into an accommodating chamber
  • FIG. 5 is a perspective view showing film capacitors and a capacitor holder in another embodiment.
  • FIGS. 1 to 4 one embodiment of the present invention will now be described.
  • a motor-driven compressor 10 includes a housing H.
  • the housing H includes a discharge housing member 11 , a suction housing member 12 , and a cover 13 , which are made of a metal, preferably aluminum.
  • the discharge housing member 11 , the suction housing member 12 , and the cover 13 are cylindrical and each include a closed end.
  • the suction housing member 12 is coupled to the discharge housing member 11 .
  • the suction housing member 12 has a circumferential wall including a suction port (not shown) connected to an external refrigerant circuit (not shown).
  • the discharge housing member 11 includes a discharge port 14 connected to the external refrigerant circuit.
  • the suction housing member 12 accommodates a compression unit 15 (indicated by the broken lines in FIG.
  • the compression unit 15 of the present embodiment includes a fixed scroll, which is fixed in the suction housing member 12 , and a movable scroll, which faces the fixed scroll.
  • a stator 17 is fixed to the inner surface of the suction housing member 12 .
  • the stator 17 includes a stator core 17 a , which is fixed to the inner surface of the suction housing member 12 , and coils 17 b , which are wound around teeth (not shown) of the stator core 17 a .
  • a rotatable rotation shaft 19 extends through the stator 17 in the suction housing member 12 .
  • a rotor 18 is fixed to the rotation shaft 19 .
  • the suction housing member 12 has an end wall 12 a to which the cover 13 is coupled.
  • a planer coupling base 31 is arranged between the suction housing member 12 and the cover 13 .
  • the coupling base 31 is made of a metal, preferably aluminum.
  • the coupling base 31 is coupled to the end wall 12 a of the suction housing member 12 .
  • the coupling base 31 is thermally coupled to the suction housing member 12 .
  • the coupling base 31 serves as a coupling member, which configures a part of the housing H.
  • the cover 13 and the coupling base 31 define an accommodation chamber 13 a in the housing H.
  • the accommodation chamber 13 a accommodates a motor driving circuit 20 that drives the electric motor 16 .
  • the compression unit 15 , the electric motor 16 , and the motor driving circuit 20 are arranged in this order along the axis L of the rotation shaft 19 (in the axial direction).
  • the electric motor 16 is supplied with power that is controlled by the motor driving circuit 20 . This rotates the rotor 18 and the rotation shaft 19 at a controlled rotation speed and drives the compression unit 15 .
  • the driving of the compression unit 15 draws refrigerant from the external refrigerant circuit into the suction housing member 12 through the suction port, compresses the refrigerant in the suction housing member 12 with the compression unit 15 , and discharges the compressed refrigerant to the external refrigerant circuit through the discharge port 14 .
  • the motor driving circuit 20 includes a flat circuit board 21 and a plurality of electric components of various types, which are electrically connected to the circuit board 21 .
  • the circuit board 21 is arranged in the accommodation chamber 13 a such that a mounting surface 21 a of the circuit board 21 on which the electric components are arranged is perpendicular to the axis of the rotation shaft 19 .
  • the electric components include film capacitors 22 , for example.
  • the motor driving circuit 20 includes a plurality of film capacitors 22 . Each film capacitor 22 includes leads 22 a . The leads 22 a electrically connect the film capacitor 22 to the circuit board 21 .
  • a plastic capacitor holder 23 holds the film capacitors 22 .
  • the capacitor holder 23 which holds the film capacitors 22 , is coupled to the side of the coupling base 31 that is opposite to the end wall 12 a of the suction housing member 12 .
  • a plurality of bosses 31 f projects from the surface of the coupling base 31 that is opposite to the end wall 12 a of the suction housing member 12 .
  • Bolts B1 are inserted through the cover 13 and engaged with the corresponding bosses 31 f to fasten the coupling base 31 to the cover 13 . Accordingly, the cover 13 , the coupling base 31 , and the motor driving circuit 20 are combined to form a module.
  • a bolt B2 fastens the cover 13 , which is combined with the coupling base 31 and the motor driving circuit 20 , to the suction housing member 12 .
  • the capacitor holder 23 includes a side wall body 23 a , which covers the side surfaces of each film capacitor 22 .
  • the side wall body 23 a includes hollowed polygonal shapes each configured by side walls and face the four sides of the corresponding film capacitor 22 .
  • the side wall 231 a which is positioned to face one of the four sides of each film capacitor 22 , includes through-holes 23 h , each of which guides a lead 22 a of the corresponding film capacitor 22 to the portion of the circuit board 21 to which the lead 22 a is to be coupled.
  • the side walls 232 a and 233 a face each other and are integrally formed with the side wall 231 a that includes the through-holes 23 h .
  • Each of the side walls 232 a and 233 a includes a first retaining piece 41 , which serves as a first retainer, and second retaining pieces 42 , which serves as a second retainer.
  • the first retaining pieces 41 extend from each side wall body 23 a toward the circuit board 21 .
  • the first retaining pieces 41 engage with the first end surface 221 of the corresponding film capacitor 22 to hold the film capacitor 22 .
  • the second retaining pieces 42 extend from each side wall body 23 a in a direction away from the circuit board 21 .
  • the second retaining pieces 42 engage with the second end surface 222 of the corresponding film capacitor 22 to hold the film capacitor 22 .
  • the length L2 of the second retaining pieces 42 in the extending direction of the second retaining pieces 42 is greater than the length L1 of the first retaining pieces 41 in the extending direction of the first retaining pieces 41 .
  • the second retaining pieces 42 can be elastically deformed.
  • each of the side walls 232 a and 233 a which face each other, includes one of the first retaining pieces 41 and two of the second retaining pieces 42 .
  • the first retaining piece 41 is positioned between the two second retaining pieces 42 in each of the side walls 232 a and 233 a .
  • the width H1 of the first retaining pieces 41 is greater than the width H2 of the second retaining pieces 42 .
  • each first retaining piece 41 protrudes in perpendicularly from the side wall body 23 a of the capacitor holder 23 .
  • Each second retaining piece 42 protrudes perpendicularly from the side wall body 23 a of the capacitor holder 23 .
  • the tip end 42 e of the second retaining piece 42 is shaped as a hook.
  • the coupling base 31 includes recesses 51 , which serve as engaging portions, in the surface facing the film capacitors 22 .
  • the recesses 51 are engaged with the corresponding second retaining pieces 42 and limit the amount of the elastic deformation of the second retaining pieces 42 .
  • the second retaining pieces 42 are pressed against the corresponding film capacitor 22 and elastically deformed. This facilitates the insertion of each film capacitor 22 into the capacitor holder 23 .
  • each film capacitor 22 is accommodated in the capacitor holder 23 , the first retaining pieces 41 engage with the first end surface 221 of the corresponding film capacitor 22 to hold the film capacitor 22 . Further, as the second retaining pieces 42 return to their original positions, the tip ends 42 e of the second retaining pieces 42 engage with the second end surface 222 of the corresponding film capacitor 22 to hold the film capacitor 22 . Thereby, each film capacitor 22 is held by the capacitor holder 23 in the state where the film capacitor 22 is held between the first retaining pieces 41 and the second retaining pieces 42 . This improves the resistance of the film capacitor 22 against vibration via the capacitor holder 23 . Accordingly, even if each film capacitor 22 vibrates during the running of the vehicle, the film capacitor 22 is restricted from escaping from the capacitor holder 23 .
  • the capacitor holder 23 includes the first retaining pieces 41 and the second retaining pieces 42 .
  • the first retaining pieces 41 extend from each side wall body 23 a toward the circuit board 21 .
  • the first retaining pieces 41 engage with the first end surface 221 of the corresponding film capacitor 22 to hold the film capacitor 22 .
  • the second retaining pieces 42 extend from each side wall body 23 a in a direction away from the circuit board 21 .
  • the second retaining pieces 42 engage with the second end surface 222 of the corresponding film capacitor 22 to hold the film capacitor 22 .
  • the length L2 of the second retaining pieces 42 in the extending direction of the second retaining pieces 42 is greater than the length L1 of the first retaining pieces 41 in the extending direction of the first retaining pieces 41 .
  • the second retaining pieces 42 are elastically deformed so that the corresponding film capacitor 22 is accommodated in the capacitor holder 23 . This facilitates the insertion of the film capacitors 22 into the capacitor holder 23 when inserting the film capacitors 22 into the capacitor holder 23 since the second retaining pieces 42 are pressed and elastically deformed by the corresponding film capacitor 22 .
  • each film capacitor 22 is accommodated in the capacitor holder 23 , the first retaining pieces 41 engage with the first end surface 221 of the corresponding film capacitor 22 to hold the film capacitor 22 . Further, as the second retaining pieces 42 return to their original positions, the second retaining pieces 42 engage with the second end surface 222 of the corresponding film capacitor 22 to hold the film capacitor 22 . Accordingly, each film capacitor 22 is held by the capacitor holder 23 in the state where the film capacitor 22 is held between the first retaining pieces 41 and the second retaining pieces 42 . This improves the resistance of the film capacitor 22 against vibration via the capacitor holder 23 .
  • a plurality of the second retaining pieces 42 are provided on each film capacitor 22 .
  • Each first retaining piece 41 is located between adjacent two of the second retaining pieces 42 in each of the side walls 232 a and 233 a .
  • the width H1 of the first retaining pieces 41 is greater than the width H2 of the second retaining pieces 42 . According to this, since a plurality of the second retaining pieces is provided on each film capacitor 22 , the holding force for holding the film capacitor 22 is improved in comparison to the case where only a single second retaining piece 42 is provided on each film capacitor 22 .
  • the length L1 of the first retaining pieces 41 in the extending direction of the first retaining pieces 41 is less than the length L2 of the second retaining pieces 42 in the extending direction of the second retaining pieces 42 , and the width H1 of the first retaining pieces 41 is greater than the width H2 of the second retaining pieces 42 . Accordingly, the first retaining pieces 41 are less easily elastically deformed than the second retaining pieces 42 . Thus, when the film capacitors 22 are inserted through the second retaining pieces 42 into the capacitor holder 23 , the first retaining pieces 41 are less easily elastically deformed. Therefore, each film capacitor 22 is restricted from being pushed to the first retaining pieces 41 . This allows the first end surface 221 of the film capacitor 22 to be reliably engaged with the first retaining pieces 41 .
  • Each side wall body 23 a of the capacitor holder 23 includes the through-holes 23 h , which guide the leads 22 a to the portions of the circuit board 21 to which the leads 22 a are to be connected. According to this, when inserting the film capacitors 22 through the second retaining pieces 42 into the capacitor holder 23 , the through-holes 23 h guide the leads 22 a to the portions of the circuit board 21 to which the leads 22 a are to be connected. This facilitates the connection operation between the leads 22 a and the circuit board 21 .
  • the through-holes 23 h are formed in the side wall 231 a of the capacitor holder 23 positioned to face one of the four sides of each film capacitor 22 .
  • the side walls 232 a and 233 a face each other and are integrally formed with the side wall 231 a including the through-holes 23 h .
  • Each of the side walls 232 a and 233 a includes the first retaining piece 41 and the second retaining pieces 42 .
  • the through-holes 23 h are formed in a side wall different from those of which the first retaining pieces 41 and the second retaining pieces 42 are provided.
  • the recesses 51 are engaged with the corresponding second retaining pieces 42 , and limit the amount of the elastic deformation of the second retaining pieces 42 . According to this, the amount of the elastic deformation of the second retaining pieces 42 is limited by the recesses 51 so that the holding force of the capacitor holder 23 for holding the film capacitors 22 is further improved.
  • the second retaining pieces 42 Since the second retaining pieces 42 are elastically deformed, the second retaining pieces 42 include the rigidity less than that of the first retaining pieces 41 . Therefore, the holding force of the second retaining pieces 42 for holding the film capacitors 22 is less than the holding force of the first retaining pieces 41 for holding the film capacitors 22 . Accordingly, in the present embodiment, the four second retaining pieces 42 are provided for each film capacitor 22 . This increases the number of the portions in the second end surface 222 of the film capacitor 22 by which the film capacitor 22 is held. Accordingly, the holding force for holding the film capacitor 22 is ensured.
  • first retaining pieces 41 may be provided on each of the side walls 232 a and 233 a , which face each other.
  • the number of the first retaining pieces 41 and the second retaining pieces 42 is not limited.
  • first retaining pieces 41 and the second retaining pieces 42 may be provided on each of the side walls 232 a and 233 a , which face each other.
  • the first retaining pieces 41 and the second retaining pieces 42 may be formed on the side wall 231 a , which includes the through-holes 23 h .
  • the first retaining pieces 41 or the second retaining pieces 42 may be formed on the side wall 231 a , which includes the through-holes 23 h.
  • the coupling base 31 may include protrusions such that the protrusions engage with the second retaining pieces 42 to limit the amount of the elastic deformation of the second retaining pieces 42 .
  • the protrusions serve as engaging portions.
  • the width H1 of the first retaining pieces 41 may be the same as the width H2 of the second retaining pieces 42 .
  • the width H1 of the first retaining pieces 41 may be less than the width H2 of the second retaining pieces 42 .
  • the coupling base 31 may be omitted.
  • the capacitor holder 23 may be coupled to the end wall 12 a of the suction housing member 12 .
  • the end wall 12 a of the suction housing member 12 serves as a coupling member to which the capacitor holder 23 is coupled.
  • the recesses 51 may be formed in the surface of the end wall 12 a facing the capacitor holder 23 .
  • the number of the film capacitor 22 is not particularly limited. That is, the number may be appropriately changed.
  • the capacitors may include an electrolytic capacitor, for example.
  • the motor driving circuit 20 may be located radially outward of the rotation shaft 19 , for example.
  • the compression unit 15 may be of a piston type or a vane type, for example.
  • the motor-driven compressor 10 may be used for any air conditioning device other than that installed in a vehicle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Compressor (AREA)
US14/312,868 2013-06-25 2014-06-24 Motor-driven compressor Abandoned US20140377096A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-132615 2013-06-25
JP2013132615A JP5949681B2 (ja) 2013-06-25 2013-06-25 電動圧縮機

Publications (1)

Publication Number Publication Date
US20140377096A1 true US20140377096A1 (en) 2014-12-25

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US14/312,868 Abandoned US20140377096A1 (en) 2013-06-25 2014-06-24 Motor-driven compressor

Country Status (4)

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US (1) US20140377096A1 (ja)
JP (1) JP5949681B2 (ja)
KR (1) KR101591027B1 (ja)
CN (1) CN104251189B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10053304B2 (en) * 2015-07-28 2018-08-21 B&R Industrial Automation GmbH Holder
DE102020129134B4 (de) 2020-11-05 2022-05-25 Audi Aktiengesellschaft Schutzvorrichtung für einen Pulswechselrichter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7314814B2 (ja) * 2020-01-29 2023-07-26 株式会社豊田自動織機 電動圧縮機

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US5865413A (en) * 1995-08-07 1999-02-02 Motorola Inc. Surface mountable component holder
US6619933B2 (en) * 2000-08-29 2003-09-16 Sanden Corporation Motor-driven compressors
US20070002594A1 (en) * 2005-06-29 2007-01-04 Honda Motor Co., Ltd. Capacitor mounting type inverter unit
US20080181791A1 (en) * 2007-01-29 2008-07-31 Masao Iguchi Electric compressor
US7972123B2 (en) * 2006-03-29 2011-07-05 Kabushiki Kaisha Toyota Jidoshokki Electric compressor
US20110189035A1 (en) * 2010-02-01 2011-08-04 Mitsubishi Heavy Industries, Ltd. Integrated-inverter electric compressor
US20130140079A1 (en) * 2010-08-25 2013-06-06 Kitagawa Industries Co., Ltd. Capacitor holder

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JP2001041499A (ja) * 1999-08-02 2001-02-13 Toshiba Kyaria Kk インバータ制御装置およびその製造方法
JP4436192B2 (ja) * 2004-06-07 2010-03-24 三菱重工業株式会社 電動圧縮機の制御装置
KR100659977B1 (ko) * 2004-11-03 2006-12-26 센서스앤드컨트롤스코리아 주식회사 냉장고 압축기용 접속 패키지의 분리형 클램프 장치
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JP5626200B2 (ja) * 2011-01-06 2014-11-19 株式会社豊田自動織機 電気部品の固定構造
JP5936313B2 (ja) * 2011-04-22 2016-06-22 三菱電機株式会社 電子部品の実装構造体
JP5644706B2 (ja) * 2011-07-19 2014-12-24 株式会社豊田自動織機 電動圧縮機用の電子部品固定構造

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5865413A (en) * 1995-08-07 1999-02-02 Motorola Inc. Surface mountable component holder
US6619933B2 (en) * 2000-08-29 2003-09-16 Sanden Corporation Motor-driven compressors
US20070002594A1 (en) * 2005-06-29 2007-01-04 Honda Motor Co., Ltd. Capacitor mounting type inverter unit
US7972123B2 (en) * 2006-03-29 2011-07-05 Kabushiki Kaisha Toyota Jidoshokki Electric compressor
US20080181791A1 (en) * 2007-01-29 2008-07-31 Masao Iguchi Electric compressor
US20110189035A1 (en) * 2010-02-01 2011-08-04 Mitsubishi Heavy Industries, Ltd. Integrated-inverter electric compressor
US20130140079A1 (en) * 2010-08-25 2013-06-06 Kitagawa Industries Co., Ltd. Capacitor holder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10053304B2 (en) * 2015-07-28 2018-08-21 B&R Industrial Automation GmbH Holder
DE102020129134B4 (de) 2020-11-05 2022-05-25 Audi Aktiengesellschaft Schutzvorrichtung für einen Pulswechselrichter
US11791742B2 (en) 2020-11-05 2023-10-17 Audi Ag Protection device for a pulse inverter

Also Published As

Publication number Publication date
KR101591027B1 (ko) 2016-02-02
CN104251189B (zh) 2017-01-11
JP2015007392A (ja) 2015-01-15
CN104251189A (zh) 2014-12-31
JP5949681B2 (ja) 2016-07-13
KR20150000836A (ko) 2015-01-05

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Owner name: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YANO, JUNYA;FUJII, AKIO;TAKAHATA, JUNICHI;SIGNING DATES FROM 20140619 TO 20140620;REEL/FRAME:033187/0908

STCB Information on status: application discontinuation

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