JP5247045B2 - Manufacturing method of inverter-integrated electric compressor - Google Patents

Manufacturing method of inverter-integrated electric compressor Download PDF

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Publication number
JP5247045B2
JP5247045B2 JP2007042159A JP2007042159A JP5247045B2 JP 5247045 B2 JP5247045 B2 JP 5247045B2 JP 2007042159 A JP2007042159 A JP 2007042159A JP 2007042159 A JP2007042159 A JP 2007042159A JP 5247045 B2 JP5247045 B2 JP 5247045B2
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Japan
Prior art keywords
drive circuit
compressor
inverter
motor drive
coating
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Expired - Fee Related
Application number
JP2007042159A
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Japanese (ja)
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JP2008202564A (en
Inventor
孝昭 板橋
昌彦 尾坂
公 塚本
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サンデン株式会社
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Priority to JP2007042159A priority Critical patent/JP5247045B2/en
Publication of JP2008202564A publication Critical patent/JP2008202564A/en
Application granted granted Critical
Publication of JP5247045B2 publication Critical patent/JP5247045B2/en
Application status is Expired - Fee Related legal-status Critical
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10Outer members for co-operation with rotary pistons; Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085Prime movers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00Motor parameters
    • F04B2203/02Motor parameters of rotating electric motors
    • F04B2203/0204Frequency of the electric current
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/80Other components
    • F04C2240/808Electronic circuits (e.g. inverters) installed inside the machine

Description

  The present invention relates to an inverter-integrated electric compressor in which a motor drive circuit including an inverter is assembled in a compressor, and more particularly, when performing resin filling or resin coating to insulate and protect the motor drive circuit. The present invention relates to an inverter-integrated electric compressor that can reduce the amount of filling or coating resin as much as possible and reduce the weight and cost of the compressor as a whole.

  As a structure of an electric compressor including a motor drive circuit including an inverter or the like, a structure in which the motor drive circuit is covered with an insulating resin mold material and embedded in the resin mold material is known (for example, Patent Document 1).

In addition, the power semiconductor module placed between the upper lid and the compressor housing (low pressure side in the housing) is covered and embedded by pouring insulating synthetic resin, etc., in a heated flow state. The structure is also known (for example, Patent Document 2).
JP 2002-70743 A Japanese Patent Laid-Open No. 4-80554

  However, in the conventional structure as described above, it is necessary to cover and fill the insulating resin material in a predetermined state in a relatively small space in which the motor drive circuit is assembled. In addition to being difficult, careful attention and skill are required to prevent damage to the motor drive circuit during resin coating and filling.

  Further, since the motor drive circuit or the like is substantially embedded, the amount of filling or coating resin increases, and accordingly, the weight reduction and cost reduction of the entire electric compressor are hindered. In particular, in an electric compressor used for a vehicle air conditioner or the like, it is required to reduce the weight and cost as much as possible.

  Therefore, in view of the problems and demands of the conventional electric compressor, the object of the present invention is to simplify, facilitate the coating, reduce the weight by reducing the amount of resin, and reduce the cost for the resin coating structure of the motor drive circuit. An object is to provide an inverter-integrated electric compressor capable of measuring the above.

In order to solve the above problems, an inverter-integrated electric compressor manufacturing method according to the present invention includes an inverter-integrated electric compressor in which a motor is incorporated and a motor drive circuit including the inverter is provided in the compressor housing. In the manufacturing method, after the electric component including the motor driving circuit is mounted on the compressor and the lid member protecting the electric component is assembled to the compressor housing, at least a part of the electric component including the motor driving circuit is It is coated by casting a liquid resin material made of a thermosetting resin under a preheated state after being heated, and the liquid resin material is poured from an inlet opening in the lid member, and excess resin is poured into the lid member At least a part of the electric component including the motor drive circuit, after the discharge port and the discharge port are closed after being discharged from the discharge port opening Provided in the suction refrigerant heat exchangeably compressor housing is fluid to be compressed, at least some of electric parts including the motor drive circuit, the film thickness is Ru coated such that 0.2mm or 2mm or less It consists of the method characterized by this.

  That is, in the conventional structure as described above, the motor drive circuit is substantially embedded in the resin material. However, in the present invention, with a predetermined film thickness (that is, compared to the embedded form) It is a structure in which a resin material is coated on a necessary portion by coating (with a thin film thickness). In a state after completion of the predetermined assembly, the resin material is only coated with a coating on a necessary portion with a thin film thickness. There is no risk of damage, and the desired coating can be completed simply by applying the coating, so that the operation can be performed very easily. Further, since the coating only needs to be applied with a thin film thickness, the amount of resin used may be small, and the weight and cost of the compressor as a whole can be reduced at the same time.

In such a method for manufacturing an inverter-integrated electric compressor according to the present invention, in particular, when the fluid to be compressed is a refrigerant, at least a part of the electric components including the motor drive circuit is a suction refrigerant that is the fluid to be compressed. A heat exchange is provided in the compressor housing . That is, it is preferable that a motor drive circuit is provided in or near the compressor housing located in the refrigerant suction path, and configured to be able to exchange heat with the suction refrigerant side at that position. With this configuration, it is possible to automatically and appropriately cool an inverter that easily generates heat, maintain the predetermined performance of the motor drive circuit, and eliminate the need to provide a separate cooling device or the like, thereby simplifying the structure. it can.

At least some of electric parts including the motor drive circuit, Ru coated by causing cast the liquid resin material. Here, the casting of the liquid resin material is a series of processes until a predetermined amount of the liquid resin material is poured into the target portion and the excess liquid resin material is appropriately discharged from the poured liquid resin material. Refers to the process. Coating by casting a liquid resin material can be performed very easily, so that the coating operation is further facilitated. Moreover, since the surplus resin material is discharged, there is no waste in the amount of resin used. However, as a coating method of the liquid resin material, other coating methods such as a so-called dipping method coating can be employed.

At least some of electric parts including the motor drive circuit, Ru coated under residual heat condition after heating. In this case, it becomes possible to control the coating thickness in correspondence with the residual heat, even when a thin film thickness, it is Rukoto give relatively thick first coating thickness.

  As the resin material used for coating, a thermosetting resin, for example, urethane or epoxy resin is preferable. If it is a thermosetting resin, it can maintain sufficiently high heat resistance and further durability against heat generated by an inverter or the like after predetermined curing.

The coating thickness is 0.2 mm or more . This is because the coating in the present invention is intended to have a predetermined film thickness required for insulation, protection, etc., unlike coating by spraying or the like for ordinary rust prevention (in this case, it is generally extremely thin film thickness). This is to get it . Further, if the film becomes too thick, since the same problem as conventional embedded form is likely to occur, should be kept to in 2mm or as film thickness.

As described above, in the method for manufacturing an inverter-integrated electric compressor according to the present invention, coating is performed in a state after completion of predetermined assembly. In particular, electric parts including the motor drive circuit is mounted to the compressor, after the cover member for protecting the electrical component is assembled to the compressor housing, coating Ru decorated. Since the coating is in a state protected by the lid member, the possibility of damage caused by the coating is more completely removed. Moreover, pouring the liquid resin material into a predetermined site more accurately by utilizing the cover member, because it is possible emissions, it is possible to further facilitate the coating by casting.

According to the method for manufacturing an inverter-integrated electric compressor according to the present invention, the motor drive circuit and the like are coated with a predetermined film thickness with a resin material in an assembled state, so that the predetermined resin coating is simplified. It can be simplified, and at the same time, it is possible to reduce the weight and cost of the entire compressor by reducing the amount of resin used.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an inverter-integrated electric compressor 1 according to an embodiment of the present invention, and shows an example in which the present invention is applied to a scroll-type electric compressor. In FIG. 1, reference numeral 2 denotes a compression mechanism composed of a fixed scroll 3 and a movable scroll 4. The movable scroll 4 is turned with respect to the fixed scroll 3 in a state in which the rotation is prevented via the ball coupling 5. A motor 7 is incorporated in the compressor housing (center housing) 6, and the main shaft 8 (rotary shaft) is rotationally driven by the built-in motor 7. The rotational motion of the main shaft 8 is converted into the turning motion of the movable scroll 4 via the eccentric pin 9 disposed on one end side of the main shaft 8 and the eccentric bush 10 rotatably engaged with the eccentric pin 9. ing. In this embodiment, a suction port 11 for sucking refrigerant as a fluid to be compressed is provided in the compressor housing (front housing) 12, and the sucked refrigerant is guided to the compression mechanism 2 through the motor 7 arrangement portion. The refrigerant compressed by the compression mechanism 2 is sent to the external circuit through the discharge port 13, the discharge chamber 14, and the discharge port 16 provided in the compressor housing (rear housing) 15.

  The driving circuit 21 for the motor 7 is provided in the compressor housing 12 (front housing), and more specifically, on the outer surface side of the partition wall 22 with the refrigerant suction path side formed in the compressor housing 12. A motor drive circuit 21 is provided. The motor drive circuit 21 supplies power to the motor 7 via a sealed terminal 23 (an output terminal of the motor drive circuit 21) attached through the partition wall 22 and a lead wire 24. The path side and the motor drive circuit 21 installation side are sealed. By providing the motor drive circuit 21 on the outer surface side of the partition wall 22, at least a part of the electrical components including the motor drive circuit 21 can exchange heat with the suction refrigerant via the partition wall 22. The cooling is possible.

  The motor drive circuit 21 includes an IPM (Intelligent Power Module) 25 having an inverter function and a control circuit 26, and an electrical component such as a capacitor 27 is provided separately or integrally therewith. The motor drive circuit 21 is connected to an external power source (not shown) via a connector 28 as an input terminal. The opening side to the outside of the compressor housing 12 on which the electric parts including the motor drive circuit 21 are mounted is covered in a state of being sealed with a lid member 29, and these electric parts are protected by the lid member 29. .

  The electric components such as the motor drive circuit 21 and the capacitor 27 are coated (thin film) with a predetermined film thickness (for example, with a film thickness of 0.2 mm or more) with a thermosetting resin such as urethane or epoxy in an assembled state. In so-called chocolate coating). In this coating, a liquid resin material is filled in the housing 12 in which the electrical components are mounted. The resin inlet may be appropriately opened in the lid member 29 and is preferably closed after use. This is done by injecting and diffusing. After the injection, the excess resin is discharged from the discharge port (which may be appropriately opened in the lid member 29 and preferably closed after use). After the coating is completed, the injection / discharge port is completed. Can be sealed. For example, as shown in the figure, the injection resin 31 is poured and the excess discharge resin 32 is discharged. As described above, as described above, it is possible to appropriately control the thickness of the coating by preheating the electrical components and the like under the preheated condition.

  Thus, by coating the motor drive circuit 21 and the like with a predetermined film thickness with a resin material in the assembled state, the predetermined resin coating is simplified compared to the conventional resin filling in which electrical components are embedded. Can be facilitated. In addition, since a thin film coating is sufficient, the amount of resin used can be greatly reduced, and the weight and cost of the entire compressor can be reduced.

  In particular, in the above-described embodiment, the desired coating can be completed simply by pouring the resin into the lid member 29 and discharging the excess resin as appropriate, thereby further facilitating the predetermined resin coating. Can measure.

  The coating structure according to the present invention can be applied to any inverter-integrated electric compressor, and is particularly suitable for a compressor used in a vehicle air conditioner that is strongly required to reduce the weight and cost of the entire compressor. It is.

1 is a schematic longitudinal sectional view of an inverter-integrated electric compressor according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inverter integrated electric compressor 2 Compression mechanism 3 Fixed scroll 4 Movable scroll 5 Ball coupling 6 Compressor housing (center housing)
7 Motor 8 Main shaft 9 Eccentric pin 10 Eccentric bush 11 Suction port 12 Compressor housing (front housing)
13 Discharge hole 14 Discharge chamber 15 Compressor housing (rear housing)
16 Discharge port 21 Motor drive circuit 22 Partition wall 23 Sealed terminal 24 Lead wire 25 IPM
26 Control circuit 27 Capacitor 28 Connector 29 Lid member 31 Injection resin 32 Excess discharge resin

Claims (1)

  1. In a method of manufacturing an inverter-integrated electric compressor in which a motor is incorporated and a motor drive circuit including an inverter is provided in a compressor housing, the electric component including the motor drive circuit is mounted on the compressor, and the electric component is After the cover member to be protected is assembled to the compressor housing, at least a part of the electric components including the motor drive circuit is cast with a liquid resin material made of a thermosetting resin in a preheated state after being heated. The liquid resin material is poured from an inlet opening in the lid member, and excess resin is discharged from an outlet opening in the lid member. Then, the inlet and the outlet are closed, and the motor At least a part of the electric component including the drive circuit is provided in the compressor housing so as to be able to exchange heat with the suction refrigerant that is the fluid to be compressed, At least partially, a manufacturing method of an inverter-integrated electric compressor having a thickness and wherein Rukoto coated such that 0.2mm or 2mm or less electrical components, including a driving circuit.
JP2007042159A 2007-02-22 2007-02-22 Manufacturing method of inverter-integrated electric compressor Expired - Fee Related JP5247045B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007042159A JP5247045B2 (en) 2007-02-22 2007-02-22 Manufacturing method of inverter-integrated electric compressor

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2007042159A JP5247045B2 (en) 2007-02-22 2007-02-22 Manufacturing method of inverter-integrated electric compressor
US12/528,437 US20100143165A1 (en) 2007-02-22 2008-02-13 Electric compressor with integral inverter
CN200880006003A CN101622450A (en) 2007-02-22 2008-02-13 Electric compressor with built-in inverter
PCT/JP2008/052340 WO2008102674A1 (en) 2007-02-22 2008-02-13 Electric compressor with integral inverter
DE200811000476 DE112008000476T5 (en) 2007-02-22 2008-02-13 Electric compressor with integral inverter

Publications (2)

Publication Number Publication Date
JP2008202564A JP2008202564A (en) 2008-09-04
JP5247045B2 true JP5247045B2 (en) 2013-07-24

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Country Status (5)

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US (1) US20100143165A1 (en)
JP (1) JP5247045B2 (en)
CN (1) CN101622450A (en)
DE (1) DE112008000476T5 (en)
WO (1) WO2008102674A1 (en)

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Publication number Priority date Publication date Assignee Title
JP5235312B2 (en) * 2007-02-22 2013-07-10 サンデン株式会社 Manufacturing method of inverter-integrated electric compressor
JP2008202566A (en) * 2007-02-22 2008-09-04 Sanden Corp Electric compressor with built-in inverter
JP5138551B2 (en) 2008-11-06 2013-02-06 サンデン株式会社 Inverter-integrated electric compressor
JP5261139B2 (en) 2008-11-06 2013-08-14 サンデン株式会社 Inverter-integrated electric compressor
JP5412098B2 (en) * 2008-12-05 2014-02-12 三菱重工業株式会社 Inverter-integrated electric compressor and its inverter device
JP5308917B2 (en) * 2009-05-29 2013-10-09 サンデン株式会社 Inverter-integrated electric compressor
JP5252006B2 (en) 2011-03-08 2013-07-31 株式会社豊田自動織機 Electric compressor
JP5267601B2 (en) * 2011-03-08 2013-08-21 株式会社豊田自動織機 Electric compressor
EP2677176B1 (en) * 2012-06-22 2018-12-19 Skf Magnetic Mechatronics Compact electric centrifugal compressor
JP5708592B2 (en) * 2012-08-03 2015-04-30 株式会社豊田自動織機 Electric compressor
CN107013462B (en) * 2016-01-27 2020-01-31 上海海立新能源技术有限公司 horizontal scroll compressor
DE102016215051A1 (en) * 2016-08-12 2018-02-15 Robert Bosch Gmbh Device and air conditioning device
WO2018198219A1 (en) * 2017-04-26 2018-11-01 三菱電機株式会社 Inverter-integrated rotating electric machine

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JP2008202566A (en) * 2007-02-22 2008-09-04 Sanden Corp Electric compressor with built-in inverter

Also Published As

Publication number Publication date
US20100143165A1 (en) 2010-06-10
WO2008102674A1 (en) 2008-08-28
CN101622450A (en) 2010-01-06
DE112008000476T5 (en) 2010-04-15
JP2008202564A (en) 2008-09-04

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