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JP2008202564A - Electric compressor with built-in inverter - Google Patents

Electric compressor with built-in inverter Download PDF

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Publication number
JP2008202564A
JP2008202564A JP2007042159A JP2007042159A JP2008202564A JP 2008202564 A JP2008202564 A JP 2008202564A JP 2007042159 A JP2007042159 A JP 2007042159A JP 2007042159 A JP2007042159 A JP 2007042159A JP 2008202564 A JP2008202564 A JP 2008202564A
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Japan
Prior art keywords
inverter
drive circuit
motor drive
resin
coating
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JP2007042159A
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Japanese (ja)
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JP5247045B2 (en
Inventor
Takaaki Itabashi
孝昭 板橋
Masahiko Ozaka
昌彦 尾坂
Akira Tsukamoto
公 塚本
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Sanden Corp
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Sanden Corp
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Priority to JP2007042159A priority Critical patent/JP5247045B2/en
Priority to PCT/JP2008/052340 priority patent/WO2008102674A1/en
Priority to US12/528,437 priority patent/US20100143165A1/en
Priority to DE112008000476T priority patent/DE112008000476T5/en
Priority to CN200880006003A priority patent/CN101622450A/en
Publication of JP2008202564A publication Critical patent/JP2008202564A/en
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Publication of JP5247045B2 publication Critical patent/JP5247045B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-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
    • F04C18/0207—Rotary-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
    • F04C18/0215—Rotary-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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0204—Frequency of the electric current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/808—Electronic circuits (e.g. inverters) installed inside the machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric compressor with a built-in inverter in which the structure of the resin-coated part of a motor drive circuit is simplified, and the coating is made easily, the weight of which is reduced by reducing the amount of the resin, and which is manufacturable at low cost. <P>SOLUTION: In this electric compressor with a built-in inverter, a motor is incorporated and the motor drive circuit having the inverter is installed in the housing of the compressor. At least a part of electric parts including the motor drive circuit is coated with a resin material of a predetermined film thickness in an assembly completion state (for example, they are coated by flowing a liquid resin therein or discharging an excess resin therefrom). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、インバータを含むモータ駆動回路が圧縮機内に組み付けられたインバータ一体型電動圧縮機に関し、とくに、モータ駆動回路を絶縁、保護するために樹脂充填もしくは樹脂被覆を施すに際し、より容易に行うことができ、かつ充填もしくは被覆樹脂量を極力少なく抑えて圧縮機全体としてより軽量化、低コスト化が可能なインバータ一体型電動圧縮機に関する。   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.

インバータ等を含むモータ駆動回路を内蔵した電動圧縮機の構造として、モータ駆動回路が絶縁用樹脂モールド材によって被覆され、該樹脂モールド材中に埋設されるようにした構造が知られている（例えば、特許文献１）。   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).

また、上蓋と圧縮機ハウジングとの間（ハウジング内の低圧側）に配置されたパワー半導体モジュールを、加熱流動状態となった絶縁用の合成樹脂等を流し込むことによって、被覆・埋設するようにした構造も知られている（例えば、特許文献２）。
特開２００２−７０７４３号公報 特開平４−８０５５４号公報 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 a synthetic resin or the like for insulation into 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

ところが、上記のような従来構造においては、絶縁用樹脂材料を、モータ駆動回路が組み付けられた比較的小さな空間部内に所定の状態に被覆・充填する必要があるため、作業を容易に行うことが困難であるととともに、樹脂の被覆・充填時にモータ駆動回路にダメージを与えないようにするためには細心の注意と熟練が必要となる。   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.

また、モータ駆動回路等を実質的に埋設する構造であるため、充填もしくは被覆樹脂量が多くなり、その分、電動圧縮機全体としての軽量化やコストダウンを阻害することともなっている。とくに、車両用空調装置等に用いられる電動圧縮機においては、可能な限り、軽量化やコストダウンをはかることが求められている。   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.

そこで本発明の課題は、このような従来の電動圧縮機における問題点や要求に鑑み、モータ駆動回路の樹脂被覆部構造について、簡素化、被覆の容易化、樹脂量低減による軽量化、コストダウンをはかることが可能なインバータ一体型電動圧縮機を提供することにある。   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.

上記課題を解決するために、本発明に係るインバータ一体型電動圧縮機は、モータが内蔵され、インバータを含むモータ駆動回路が圧縮機ハウジング内に設けられたインバータ一体型電動圧縮機において、モータ駆動回路を含む電気部品の少なくとも一部が、組立完了状態にて樹脂材料により所定の膜厚でコーティングされていることを特徴とするものからなる。   In order to solve the above-described problems, an inverter-integrated electric compressor according to the present invention includes a motor and a motor drive circuit in an inverter-integrated electric compressor in which a motor drive circuit including an inverter is provided in a compressor housing. At least a part of the electric parts including the circuit is coated with a resin film with a predetermined film thickness in the assembled state.

すなわち、前述したような従来構造では、モータ駆動回路が実質的に樹脂材料中に埋設される構造となっていたが、本発明では、所定の膜厚で（つまり、埋設形態に比べてはるかに薄い膜厚で）コーティングすることによって樹脂材料が必要部位に被覆された構造である。所定の組立完了後の状態にて、樹脂材料が薄い膜厚にて必要な部位にコーティングにより被覆されるだけであるから、モータ駆動回路を含む電気部品には構造的にあるいは重量的に負荷やダメージを与えるおそれはなく、コーティングを施すだけで所望の被覆が完成されるから、作業も極めて容易に行われる。また、コーティングは薄い膜厚で施されれば済むから、使用樹脂量は少なくてよく、圧縮機全体としての軽量化、コストダウンも同時にはかることが可能になる。   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.

このような本発明に係るインバータ一体型電動圧縮機においては、とくに被圧縮流体が冷媒である場合、モータ駆動回路を含む電気部品の少なくとも一部が、被圧縮流体である吸入冷媒と熱交換可能に圧縮機ハウジングに設けられていることが好ましい。つまり、冷媒の吸入経路に位置する圧縮機ハウジングまたはその近傍にモータ駆動回路が設けられており、その位置で吸入冷媒側と熱交換可能に構成されていることが好ましい。このように構成すれば、発熱しやすいインバータを自動的に適切に冷却でき、モータ駆動回路の所定性能を維持できるとともに、別途冷却装置等を設ける必要がないので、構造の簡素化をはかることができる。   In such an inverter-integrated electric compressor according to the present invention, particularly when the fluid to be compressed is a refrigerant, at least a part of the electric components including the motor drive circuit can exchange heat with the suction refrigerant that is the fluid to be compressed. Preferably, the compressor housing is provided. 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 is 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.

また、モータ駆動回路を含む電気部品の少なくとも一部が、液状の樹脂材料を流延させることによりコーティングされていることが好ましい。ここで、液状の樹脂材料の流延とは、ある所定量の液状樹脂材料が対象部位に流し込まれ、流し込まれた液状樹脂材料のうち余剰の液状樹脂材料が適当に排出されるまでの一連の工程のことを言う。液状の樹脂材料の流延によるコーティングは、ごく簡単に行うことができるから、コーティング作業が一層容易化される。また、余剰の樹脂材料は排出されるから、使用樹脂量に無駄が生じることはない。ただし、液状樹脂材料のコーティング方法として、いわゆるディッピング方式のコーティング等、他のコーティング方法も採用可能である。   Moreover, it is preferable that at least a part of the electric component including the motor drive circuit is coated by casting a 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 site 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.

また、モータ駆動回路を含む電気部品の少なくとも一部が、加熱された後の余熱状態下でコーティングされていることも好ましい。この場合には、余熱分に対応して皮膜厚さを制御することが可能になるので、薄い膜厚とする場合にあっても、比較的厚目の皮膜厚さを得たい場合もあり得るが、そのような場合には、この手法を採用すればよい。   Moreover, it is also preferable that at least a part of the electric component including the motor drive circuit is coated under a preheated state after being heated. In this case, since it becomes possible to control the film thickness in accordance with the remaining heat, there may be a case where it is desired to obtain a relatively thick film thickness even in the case of a thin film thickness. However, in such a case, this method may be adopted.

コーティングに使用する樹脂材料としては、熱硬化性樹脂、例えば、ウレタンやエポキシ系樹脂等が好ましい。熱硬化性樹脂であれば、所定の硬化後には、インバータ等の発熱に対しても、十分に高い耐熱性、さらには耐久性を維持することができる。   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.

また、コーティングの膜厚としては、０．２ｍｍ以上であることが好ましい。何故ならば、本発明におけるコーティングは、通常の錆止め等におけるスプレー等による被覆（この場合には、一般に極めて薄い膜厚となる）とは異なり、絶縁や保護等に必要な所定の膜厚を意図的に得るためである。膜厚の大きい方はとくに限定しないが、膜があまり厚くなりすぎると、従来の埋設形態と同様の問題が生じるおそれがあるので、膜厚としては２ｍｍ程度までに抑えておくことが好ましい。   Further, the film thickness of the coating is preferably 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. The film thickness is not particularly limited, but if the film becomes too thick, the same problem as in the conventional embedding form may occur. Therefore, it is preferable to keep the film thickness to about 2 mm.

前述の如く、本発明に係るインバータ一体型電動圧縮機では、所定の組立完了後の状態にて、コーティングが施される。とくに、モータ駆動回路を含む電気部品が圧縮機に実装され、該電気部品を保護する蓋部材が圧縮機ハウジングに組み付けられた後に、コーティングが施されていることが好ましい。蓋部材によって保護された状態でのコーティングであるから、コーティングによりダメージが与えられるおそれは一層完全に除去される。しかも、この蓋部材を利用してより正確に所定部位への液状樹脂材料の流し込み、排出が可能になるから、流延等によるコーティングの一層の容易化をはかることができる。   As described above, the inverter-integrated electric compressor according to the present invention is coated in a state after completion of predetermined assembly. In particular, it is preferable that the electrical component including the motor drive circuit is mounted on the compressor, and the coating is applied after the lid member protecting the electrical component is assembled to the compressor housing. Since the coating is in a state protected by the lid member, the possibility of damage caused by the coating is more completely removed. In addition, since the liquid resin material can be poured into and discharged from the predetermined portion more accurately using this lid member, coating can be further facilitated by casting or the like.

本発明に係るインバータ一体型電動圧縮機によれば、組立完了状態にて樹脂材料により所定の膜厚でモータ駆動回路等をコーティングするようにしたので、所定の樹脂被覆の簡素化、容易化をはかることができ、併せて、使用樹脂量低減により圧縮機全体の軽量化、コストダウンをはかることが可能になる。   According to the inverter-integrated electric compressor according to the present invention, since the motor drive circuit and the like are coated with a predetermined film thickness with a resin material in the assembled state, the predetermined resin coating can be simplified and facilitated. At the same time, it is possible to reduce the weight and cost of the entire compressor by reducing the amount of resin used.

以下に、本発明の望ましい実施の形態を、図面を参照して説明する。
図１は、本発明の一実施態様に係るインバータ一体型電動圧縮機１を示しており、スクロール型電動圧縮機に本発明を適用した例を示している。図１において、２は、固定スクロール３と可動スクロール４からなる圧縮機構を示している。可動スクロール４は、ボールカップリング５を介して自転が阻止された状態で、固定スクロール３に対して旋回されるようになっている。圧縮機ハウジング（センターハウジング）６内には、モータ７が組み込まれており、この内蔵モータ７によって主軸８（回転軸）が回転駆動される。主軸８の一端側に配設された偏心ピン９、それに対して回転自在に係合された偏心ブッシュ１０を介して、主軸８の回転運動が可動スクロール４の旋回運動に変換されるようになっている。本実施態様では、被圧縮流体としての冷媒を吸入する吸入ポート１１が圧縮機ハウジング（フロントハウジング）１２に設けられており、吸入された冷媒は、モータ７配置部を通して圧縮機構２へと導かれ、圧縮機構２で圧縮された冷媒は、吐出孔１３、吐出室１４、圧縮機ハウジング（リアハウジング）１５に設けられた吐出ポート１６を通して外部回路に送られる。 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 including 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 through the eccentric pin 9 disposed on one end side of the main shaft 8 and the eccentric bush 10 rotatably engaged thereto. 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.

上記モータ７の駆動用回路２１は、圧縮機ハウジング１２（フロントハウジング）内に設けられており、より詳しくは、圧縮機ハウジング１２に形成された冷媒吸入経路側との仕切壁２２の外面側にモータ駆動回路２１が設けられている。モータ駆動回路２１は、仕切壁２２を貫通させて取り付けられた密封端子２３（モータ駆動回路２１の出力端子）、リード線２４を介してモータ７に給電し、密封端子２３設置部では、冷媒吸入経路側とモータ駆動回路２１設置側とがシールされている。モータ駆動回路２１を仕切壁２２の外面側に設けることによって、仕切壁２２を介して、モータ駆動回路２１を含む電気部品の少なくとも一部が、吸入冷媒と熱交換可能となっており、吸入冷媒によって冷却可能となっている。   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.

モータ駆動回路２１は、インバータ機能を有するＩＰＭ（Intelligent Power Module）２５と制御回路２６とを含んでおり、それとは別体にあるいは一体にコンデンサ２７等の電気部品が設けられている。このモータ駆動回路２１は、入力端子としてのコネクタ２８を介して外部電源（図示略）と接続される。これらモータ駆動回路２１を含む電気部品を実装した圧縮機ハウジング１２の外部への開口側は、蓋部材２９でシールされた状態で覆われており、これら電気部品が蓋部材２９により保護されている。   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. .

上記モータ駆動回路２１およびコンデンサ２７等の電気部品は、組立完了状態にて、ウレタンやエポキシ等の熱硬化性樹脂により所定の膜厚で（例えば、０．２ｍｍ以上の膜厚で）コーティング（薄膜でのいわゆるチョコレートコーティング）されている。このコーティングは、電気部品が実装されたハウジング１２内に、液状の樹脂材料を樹脂注入口（蓋部材２９に適宜開口させておけばよく、使用後には閉塞できるようにしておくことが好ましい）から注入し、拡散させることで行われる。注入後、余剰の樹脂を排出口（蓋部材２９に適宜開口させておけばよく、使用後には閉塞できるようにしておくことが好ましい）から排出することによって行われ、コーティング完了後に注入・排出口をシールすればよい。例えば図示の如く、注入樹脂３１を流し込み、余剰排出樹脂３２を排出する。なお、コーティング方法として、前述の如く、電気部品等を予め加熱しその余熱状態の下で行うことによってコーティングの膜厚を適正に制御することも可能である。   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.

このように、組立完了状態にて樹脂材料により所定の膜厚でモータ駆動回路２１等をコーティングすることにより、従来の電気部品を埋設するようにした樹脂充填に比べ、所定の樹脂被覆を簡素化、容易化することができる。また、薄膜のコーティングでよいから、使用樹脂量を大幅に低減でき、圧縮機全体の軽量化、コストダウンをはかることも可能になる。   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.

とくに上記実施態様では、蓋部材２９を取り付けた状態にて、その内部に樹脂を流し込み、余剰の樹脂を適宜排出させるだけで所望のコーティングを完了できるから、所定の樹脂被覆の一層の容易化をはかることができる。   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.

本発明に係るコーティング構造は、あらゆるインバータ一体型電動圧縮機に適用可能であり、とくに圧縮機全体の軽量化、コストダウンが強く要求される車両用空調装置に使用される圧縮機に好適なものである。   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.

本発明の一実施態様に係るインバータ一体型電動圧縮機の概略縦断面図である。1 is a schematic longitudinal sectional view of an inverter-integrated electric compressor according to an embodiment of the present invention.

符号の説明Explanation of symbols

１ インバータ一体型電動圧縮機
２ 圧縮機構
３ 固定スクロール
４ 可動スクロール
５ ボールカップリング
６ 圧縮機ハウジング（センターハウジング）
７ モータ
８ 主軸
９ 偏心ピン
１０ 偏心ブッシュ
１１ 吸入ポート
１２ 圧縮機ハウジング（フロントハウジング）
１３ 吐出孔
１４ 吐出室
１５ 圧縮機ハウジング（リアハウジング）
１６ 吐出ポート
２１ モータ駆動回路
２２ 仕切壁
２３ 密封端子
２４ リード線
２５ ＩＰＭ
２６ 制御回路
２７ コンデンサ
２８ コネクタ
２９ 蓋部材
３１ 注入樹脂
３２ 余剰排出樹脂 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 (7)

モータが内蔵され、インバータを含むモータ駆動回路が圧縮機ハウジング内に設けられたインバータ一体型電動圧縮機において、モータ駆動回路を含む電気部品の少なくとも一部が、組立完了状態にて樹脂材料により所定の膜厚でコーティングされていることを特徴とするインバータ一体型電動圧縮機。   In 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, at least a part of electric components including the motor drive circuit is predetermined by a resin material in an assembled state. An inverter-integrated electric compressor characterized by being coated with a film thickness of 前記モータ駆動回路を含む電気部品の少なくとも一部が、被圧縮流体である吸入冷媒と熱交換可能に圧縮機ハウジングに設けられている、請求項１に記載のインバータ一体型電動圧縮機。   2. The inverter-integrated electric compressor according to claim 1, wherein at least a part of an electric component including the motor drive circuit is provided in the compressor housing so as to be able to exchange heat with a suction refrigerant that is a fluid to be compressed. 前記モータ駆動回路を含む電気部品の少なくとも一部が、液状の樹脂材料を流延させることによりコーティングされている、請求項１または２に記載のインバータ一体型電動圧縮機。   The inverter-integrated electric compressor according to claim 1 or 2, wherein at least a part of an electric component including the motor drive circuit is coated by casting a liquid resin material. 前記モータ駆動回路を含む電気部品の少なくとも一部が、加熱された後の余熱状態下でコーティングされている、請求項１〜３のいずれかに記載のインバータ一体型電動圧縮機。   The inverter-integrated electric compressor according to any one of claims 1 to 3, wherein at least a part of an electric component including the motor drive circuit is coated under a preheated state after being heated. 前記樹脂材料が熱硬化性樹脂からなる、請求項１〜４のいずれかに記載のインバータ一体型電動圧縮機。   The inverter-integrated electric compressor according to claim 1, wherein the resin material is made of a thermosetting resin. 前記コーティングの膜厚が０．２ｍｍ以上である、請求項１〜５のいずれかに記載のインバータ一体型電動圧縮機。   The inverter-integrated electric compressor according to any one of claims 1 to 5, wherein a film thickness of the coating is 0.2 mm or more. 前記モータ駆動回路を含む電気部品が圧縮機に実装され、該電気部品を保護する蓋部材が圧縮機ハウジングに組み付けられた後に、コーティングが施されている、請求項１〜６のいずれかに記載のインバータ一体型電動圧縮機。   The electrical component including the motor drive circuit is mounted on a compressor, and a cover member that protects the electrical component is assembled to the compressor housing, and then coating is applied. Inverter integrated electric compressor.
JP2007042159A 2007-02-22 2007-02-22 Manufacturing method of inverter-integrated electric compressor Expired - Fee Related JP5247045B2 (en)

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PCT/JP2008/052340 WO2008102674A1 (en) 2007-02-22 2008-02-13 Electric compressor with integral inverter
US12/528,437 US20100143165A1 (en) 2007-02-22 2008-02-13 Electric compressor with integral inverter
DE112008000476T DE112008000476T5 (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

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