JP3475617B2 - Electric compressor - Google Patents
Electric compressorInfo
- Publication number
- JP3475617B2 JP3475617B2 JP33002095A JP33002095A JP3475617B2 JP 3475617 B2 JP3475617 B2 JP 3475617B2 JP 33002095 A JP33002095 A JP 33002095A JP 33002095 A JP33002095 A JP 33002095A JP 3475617 B2 JP3475617 B2 JP 3475617B2
- Authority
- JP
- Japan
- Prior art keywords
- electric compressor
- aluminum
- rotor
- refrigerant
- machine oil
- 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.)
- Expired - Lifetime
Links
Landscapes
- Induction Machinery (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、塩素原子を含まな
い冷媒と冷凍機油を封入した電動圧縮機に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric compressor in which a refrigerant containing no chlorine atom and refrigerating machine oil are enclosed.
【０００２】[0002]
【従来の技術】近年、オゾン層を保護するために塩素を
含むクロロフルオロカーボン（以下ＣＦＣと書く）類お
よびハイドロクロロフルオロカーボン（以下ＨＣＦＣと
書く）類のフロンの使用が規制されつつある。しかる
に、冷蔵庫やエアコンの冷媒には従来、ＣＦＣ類および
ＨＣＦＣ類のフロンが多用されてきた。そこでこれらの
塩素を含む冷媒のかわりに、塩素を含まないハイドロフ
ルオロカーボン（以下ＨＦＣと書く）類やハイドロカー
ボン（以下ＨＣと書く）類などの物質が冷媒として検討
されている。一方、冷媒を圧縮する電動圧縮機は、圧縮
部に摺動部を持っており、主に冷凍機油により潤滑を得
ていたが、塩素を含むＣＦＣ類やＨＣＦＣ類を冷媒に用
いた場合には、冷媒中の塩素自体が摺動部を潤滑する作
用も持ち合わせていた。しかし、塩素を含まないＨＦＣ
類やＨＣ類などの物質を冷媒に用いることになると、冷
媒自体の摺動部に対する潤滑作用が減少し、冷凍機油の
みの潤滑に頼ることになるので、総じて潤滑性が悪くな
る。潤滑性の悪化は摺動部の摩耗をはやめ、電動圧縮機
の寿命が短くなり装置としての重大欠陥となる。そこで
冷媒圧縮部の摺動部の摩耗を防ぐために、燐系耐摩耗剤
を冷凍機油に添加剤として多量に加えた電動圧縮機が必
要となっている。2. Description of the Related Art In recent years, the use of chlorofluorocarbons (hereinafter referred to as CFCs) and hydrochlorofluorocarbons (hereinafter referred to as HCFCs) containing chlorine for protecting the ozone layer is being regulated. However, CFCs and HCFCs have been frequently used as refrigerants for refrigerators and air conditioners. Therefore, instead of these refrigerants containing chlorine, substances such as chlorine-free hydrofluorocarbons (hereinafter referred to as HFC) and hydrocarbons (hereinafter referred to as HC) are being studied as refrigerants. On the other hand, the electric compressor that compresses the refrigerant has a sliding part in the compression part and is mainly lubricated by refrigerating machine oil. However, when CFCs or HCFCs containing chlorine are used as the refrigerant. The chlorine itself in the refrigerant also had the effect of lubricating the sliding parts. However, HFC that does not contain chlorine
If a substance such as a refrigerant or HC is used as the refrigerant, the lubricating action of the refrigerant itself on the sliding portion is reduced, and lubrication of the refrigerating machine oil alone is relied upon, resulting in poor lubricity as a whole. Deterioration of lubricity stops wear of sliding parts, shortens the life of the electric compressor, and causes a serious defect as a device. Therefore, in order to prevent wear of the sliding parts of the refrigerant compression part, an electric compressor in which a large amount of phosphorus-based antiwear agent is added to refrigerating machine oil as an additive is required.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
ように燐系耐摩耗剤を冷凍機油に多量に添加した場合、
以下のような問題点を有していた。However, when a large amount of phosphorus antiwear agent is added to the refrigerating machine oil as described above,
It had the following problems.
【０００４】図４に示すように電動圧縮機の電動要素６
には誘導電動機を使用したものが多く、その回転子２の
２次導体には加工性からアルミニウムを使用したものが
多い。前記アルミニウムは、回転子の２次導体を形成す
るために、回転子の上下にエンドリング１を構成し、ア
ルミニウムは露出している。回転子２は高速で回転する
ために、エンドリング１の表面は常に高速で冷凍機油と
冷媒３に衝突していることになる。エンドリング１の表
面には、回転子２が電動圧縮機組立前に空気中にさらさ
れていたときに形成された数μｍ程度の薄い酸化被膜が
できているが、耐食性は低いので電動圧縮機内に持ち込
まれた部品の洗浄液中に添加されている塩素等によって
破壊され、エンドリング１の表面は常に活性なアルミニ
ウムが露出した状態になっている。一方、燐系耐摩耗剤
は電動圧縮機の冷媒圧縮部４の摺動部に付着し潤滑作用
を果たすが、多量に添加されているために摺動部の局部
熱等で燐と他の成分に分解されるものも多く、その結果
燐が冷凍機油と冷媒３の中に多量に溶け込む。活性なア
ルミニウム表面となったエンドリング１には、冷凍機油
と冷媒３の中に多量に溶け込んだ燐が高速で次々と接触
することによりエンドリング１が腐食され、ついには数
ｍｍの孔食が発生する。エンドリング１に孔食が発生す
ると、アルミニウムの量が減少するのでエンドリング１
の中に流れる誘導電動機のトルクを発生する電流が流れ
にくくなり、電動要素６としての役割に欠陥が生じる恐
れがある。また、回転子２には冷媒圧縮部４の機械的ア
ンバランスを補正するために、ウエイト８がエンドリン
グ１のアルミニウムダイカスト時に一体成型されたツノ
によってカシメられていることがある。アルミニウムの
孔食がウエイト８をカシメているツノ部におよんだ場合
はツノ部の強度が減少し、回転子２の回転応力によりウ
エイト８が脱落してしまう恐れがある。また、冷凍機油
と冷媒３の中に溶けだしたアルミニウムは、電動圧縮機
内で析出する可能性もあり、個体となったアルミニウム
粒が冷媒圧縮部４に入り込むと摺動部で詰まり、電動圧
縮機がロックするという致命的な欠陥が発生する恐れが
ある。As shown in FIG . 4 , the electric element 6 of the electric compressor.
In many cases, an induction motor is used, and in many cases, aluminum is used for the secondary conductor of the rotor 2 because of workability. The aluminum forms end rings 1 above and below the rotor to form the secondary conductor of the rotor, and the aluminum is exposed. Since the rotor 2 rotates at high speed, the surface of the end ring 1 always collides with the refrigerating machine oil and the refrigerant 3 at high speed. On the surface of the end ring 1, a thin oxide film of about several μm formed when the rotor 2 was exposed to the air before the electric compressor was assembled, but since the corrosion resistance is low, it is inside the electric compressor. It is destroyed by chlorine and the like added to the cleaning liquid of the part brought into the chamber, and the surface of the end ring 1 is always exposed to active aluminum. On the other hand, the phosphorus-based antiwear agent adheres to the sliding portion of the refrigerant compression portion 4 of the electric compressor to perform a lubricating action, but since it is added in a large amount, phosphorus and other components are generated due to local heat of the sliding portion. Many are decomposed into, and as a result, a large amount of phosphorus dissolves in the refrigerating machine oil and the refrigerant 3. Phosphorus dissolved in the refrigerating machine oil and the refrigerant 3 is brought into contact with the end ring 1 having an active aluminum surface at a high speed one after another, so that the end ring 1 is corroded, and finally, a pitting corrosion of several mm is caused. Occur. When pitting corrosion occurs in the end ring 1, the amount of aluminum decreases, so the end ring 1
The current that causes the torque of the induction motor to flow in the coil becomes difficult to flow, and the role of the electric element 6 may be defective. In addition, in order to correct the mechanical imbalance of the refrigerant compression part 4, the rotor 2 may be swaged by the horn integrally molded at the time of the aluminum die casting of the end ring 1. When the pitting corrosion of aluminum reaches the horn portion where the weight 8 is crimped, the strength of the horn portion decreases, and the weight 8 may fall off due to the rotational stress of the rotor 2. Further, the aluminum melted in the refrigerating machine oil and the refrigerant 3 may be precipitated in the electric compressor, and when solid aluminum particles enter the refrigerant compressing section 4, the sliding section is clogged and the electric compressor is A fatal defect of locking may occur.
【０００５】本発明は上記問題点を解決し、塩素原子を
含まない冷媒と冷凍機油を封入した電動圧縮機におい
て、冷凍機油中に添加された燐系耐摩耗剤による電動要
素の腐食が発生しない電
動圧縮機を提供することを目的とする。The present invention solves the above problems, and in an electric compressor in which a refrigerant containing no chlorine atom and refrigerating machine oil are enclosed, corrosion of the electric element due to the phosphorus-based antiwear agent added to the refrigerating machine oil does not occur. An object is to provide an electric compressor.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、第一の発明は電動圧縮機の電動要素の回転子のアル
ミニウム部分に表面処理を施したものである。また、前
記表面処理にアルマイト処理，ほうろう処理，無電解ニ
ッケルメッキ処理，クロメート処理，亜鉛メッキ処理，
樹脂の塗布処理を用いたものである。In order to achieve the above object, the first invention is that the aluminum portion of the rotor of the electric element of the electric compressor is surface-treated. In addition, as the surface treatment, alumite treatment, enamel treatment, electroless nickel plating treatment, chromate treatment, zinc plating treatment,
A resin coating process is used.
【０００７】第二の発明は電動圧縮機の電動要素の回転
子のアルミニウム部分を覆うカバーを取り付けたもので
ある。また、前記カバー内に樹脂を封入したものであ
る。The second aspect of the invention is to install a cover for covering the aluminum portion of the rotor of the electric element of the electric compressor. Further, a resin is enclosed in the cover.
【０００８】第三の発明は電動圧縮機の電動要素にアル
ミニウムまたはアルミニウム合金を使用しないものであ
る。また、前記電動要素を誘導電動機の回転子２次導体
に銅を使用したもので構成したものである。また、前記
電動要素をブラシレスモータで構成したものである。A third aspect of the invention is that the electric element of the electric compressor does not use aluminum or aluminum alloy. Further, the electric element is configured by using copper for the secondary conductor of the rotor of the induction motor. The electric element is a brushless motor.
【０００９】[0009]
【発明の実施の形態】本発明の請求項１に記載の発明
は、塩素原子を含まない冷媒と冷凍機油を封入した電動
圧縮機において、前記電動圧縮機の電動機の回転子の２
次導体アルミニウム部分に表面処理を施したものであ
り、腐食されるアルミニウム部分を腐食に強い物質で表
面処理し、腐食を促進する燐系耐摩耗剤を含む冷凍機油
と冷媒がアルミニウム部分に直接接触しないように構成
したため、電動要素の腐食が発生しない電動圧縮機を提
供できるという作用を有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is an electric compressor in which a refrigerant containing no chlorine atom and refrigerating machine oil are enclosed, and a rotor of the electric motor of the electric compressor is provided.
The surface treatment is applied to the aluminum part of the next conductor.The aluminum part to be corroded is surface-treated with a substance resistant to corrosion, and the refrigerating machine oil and the refrigerant containing the phosphorus-based antiwear agent that promotes corrosion directly contact the aluminum part. Since it is configured so as not to have such an effect, it is possible to provide an electric compressor in which corrosion of the electric element does not occur.
【００１０】請求項２に記載の発明は、請求項１に記載
の発明で回転子の２次導体アルミニウム部分の表面をア
ルマイト処理したものであり、腐食されるアルミニウム
部分を腐食に強い物質で表面処理し、腐食を促進する燐
系耐摩耗剤を含む冷凍機油と冷媒がアルミニウム部分に
直接接触しないように構成したため、電動要素の腐食が
発生しない電動圧縮機を提供できるという作用を有す
る。According to a second aspect of the present invention, the surface of the aluminum portion of the secondary conductor of the rotor according to the first aspect of the invention is anodized, and the aluminum portion to be corroded is surface-treated with a substance resistant to corrosion. Since the refrigerating machine oil containing the phosphorus-based antiwear agent for treating and promoting corrosion is prevented from directly contacting the aluminum portion with the refrigerant, it is possible to provide an electric compressor in which no corrosion of the electric element occurs.
【００１１】請求項３に記載の発明は、請求項１に記載
の発明で回転子の２次導体アルミニウム部分の表面をほ
うろう処理したものであり、腐食されるアルミニウム部
分を腐食に強い物質で表面処理し、腐食を促進する燐系
耐摩耗剤を含む冷凍機油と冷媒がアルミニウム部分に直
接接触しないように構成したため、電動要素の腐食が発
生しない電動圧縮機を提供できるという作用を有する。According to a third aspect of the present invention, the surface of the aluminum portion of the secondary conductor of the rotor is enamel-treated in the first aspect of the invention, and the corroded aluminum portion is surface-treated with a substance resistant to corrosion. Since the refrigerating machine oil containing the phosphorus-based antiwear agent for treating and promoting corrosion is prevented from directly contacting the aluminum portion with the refrigerant, it is possible to provide an electric compressor in which no corrosion of the electric element occurs.
【００１２】請求項４に記載の発明は、請求項１に記載
の発明で回転子の２次導体アルミニウム部分の表面を無
電解ニッケルメッキしたものであり、腐食されるアルミ
ニウム部分を腐食に強い物質で表面処理し、腐食を促進
する燐系耐摩耗剤を含む冷凍機油と冷媒がアルミニウム
部分に直接接触しないように構成したため、電動要素の
腐食が発生しない電動圧縮機を提供できるという作用を
有する。According to a fourth aspect of the present invention, the surface of the aluminum portion of the secondary conductor of the rotor according to the first aspect of the invention is electroless nickel plated, and the corroded aluminum portion is resistant to corrosion. Since the refrigerating machine oil containing the phosphorus-based antiwear agent that promotes corrosion and the refrigerant are configured so as not to come into direct contact with the aluminum portion, the electric compressor can be provided in which the electric element is not corroded.
【００１３】請求項５に記載の発明は、請求項１に記載
の発明で回転子の２次導体アルミニウム部分の表面をク
ロメート処理したものであり、腐食されるアルミニウム
部分を腐食に強い物質で表面処理し、腐食を促進する燐
系耐摩耗剤を含む冷凍機油と冷媒がアルミニウム部分に
直接接触しないように構成したため、電動要素の腐食が
発生しない電動圧縮機を提供できるという作用を有す
る。According to a fifth aspect of the present invention, the surface of the aluminum portion of the secondary conductor of the rotor according to the first aspect of the present invention is chromate-treated, and the corroded aluminum portion is surface-treated with a substance resistant to corrosion. Since the refrigerating machine oil containing the phosphorus-based antiwear agent for treating and promoting corrosion is prevented from directly contacting the aluminum portion with the refrigerant, it is possible to provide an electric compressor in which no corrosion of the electric element occurs.
【００１４】請求項６に記載の発明は、請求項１に記載
の発明で回転子の２次導体アルミニウム部分の表面を亜
鉛メッキしたものであり、腐食されるアルミニウム部分
を腐食に強い樹脂で表面処理し、腐食を促進する燐系耐
摩耗剤を含む冷凍機油と冷媒がアルミニウム部分に直接
接触しないように構成したため、電動要素の腐食が発生
しない電動圧縮機を提供できるという作用を有する。According to a sixth aspect of the present invention, in the first aspect of the present invention, the surface of the aluminum portion of the secondary conductor of the rotor is galvanized, and the corroded aluminum portion is surfaced with a resin resistant to corrosion. Since the refrigerating machine oil containing the phosphorus-based antiwear agent for treating and promoting corrosion is prevented from directly contacting the aluminum portion with the refrigerant, it is possible to provide an electric compressor in which no corrosion of the electric element occurs.
【００１５】請求項７に記載の発明は、請求項１に記載
の発明で回転子の２次導体アルミニウム部分の表面に樹
脂を塗布したものであり、腐食されるアルミニウム部分
を腐食に強い樹脂で表面処理し、腐食を促進する燐系耐
摩耗剤を含む冷凍機油と冷媒がアルミニウム部分に直接
接触しないように構成したため、電動要素の腐食が発生
しない電動圧縮機を提供できるという作用を有する。According to a seventh aspect of the present invention, the resin is applied to the surface of the secondary conductor aluminum portion of the rotor according to the first aspect of the invention, and the corroded aluminum portion is made of a resin that is resistant to corrosion. Since the refrigerating machine oil containing the phosphorus-based antiwear agent that promotes corrosion and the refrigerant are surface-treated so as not to come into direct contact with the aluminum portion, there is an effect that it is possible to provide an electric compressor in which no corrosion of the electric element occurs.
【００１６】請求項８に記載の発明は、塩素原子を含ま
ない冷媒と冷凍機油を封入した電動圧縮機において、前
記電動圧縮機の電動機の回転子の２次導体アルミニウム
部分を覆うカバーを取り付けたものであり、腐食される
アルミニウム部分を覆うカバーを取り付けることによ
り、燐系耐摩耗剤を含む冷凍機油と冷媒がアルミニウム
部分に高速で衝突することが無くなり、冷凍機油と冷媒
の中に多量に溶け込んだ燐がアルミニウムと接触する機
会に極端に少なくなるので、アルミニウム部分の腐食は
ほとんど進行しない電動圧縮機を提供できるという作用
を有する。[0016] The invention of claim 8 is the electric compressor encapsulating refrigerant and the refrigerator oil containing no chlorine atom, before
A cover for covering the aluminum part of the secondary conductor of the rotor of the electric motor of the electric compressor is attached. By installing a cover for covering the corroded aluminum part, the refrigerating machine oil containing the phosphorus-based antiwear agent and the refrigerant are Since it does not collide with the aluminum part at high speed and the phosphorus dissolved in the refrigerating machine oil and the refrigerant in a large amount has a very small chance of coming into contact with the aluminum, it is possible to provide an electric compressor in which the corrosion of the aluminum part hardly progresses. Has the effect of.
【００１７】請求項９に記載の発明は、請求項８に記載
の発明で回転子の２次導体アルミニウム部分を覆うカバ
ー内に樹脂を封入したものであり、燐系耐摩耗剤を含む
冷凍機油と冷媒はアルミニウム部分と完全に接触しなく
なるので腐食は全く発生しない、更に請求項７に記載の
発明では衝撃によって樹脂層が破壊される恐れがある
が、カバー内に樹脂を封入した構成にすることで耐衝撃
性が向上し、樹脂層が破壊されたところから腐食が進行
することが無くなるという作用を有する。According to a ninth aspect of the present invention, in the eighth aspect of the invention, a resin is enclosed in a cover for covering the aluminum portion of the secondary conductor of the rotor, and the refrigerating machine oil contains a phosphorus-based antiwear agent. Since the refrigerant does not come into complete contact with the aluminum part, corrosion does not occur at all. Further, in the invention according to claim 7, the resin layer may be destroyed by impact, but the cover is filled with the resin. This has the effect of improving the impact resistance and preventing the corrosion from proceeding from where the resin layer was destroyed.
【００１８】請求項１０に記載の発明は、塩素原子を含
まない冷媒がハイドロフルオロカーボン類またはハイド
ロカーボン類であることを特徴とする請求項１または請
求項８に記載の電動圧縮機としたものである。[0018] The invention according to claim 10, claim 1 or請, wherein the refrigerant containing no chlorine atom is hydrofluorocarbon or hydrocarbon compounds
The electric compressor according to claim 8 is provided.
【００１９】請求項１１に記載の発明は、冷凍機油に添
加剤として燐系耐摩耗剤を加えたことを特徴とする請求
項１または請求項８に記載の電動圧縮機としたものであ
る。[0019] The invention according to claim 11, wherein characterized in that the addition of phosphorus-based antiwear agent as an additive to the refrigerator oil
The electric compressor according to claim 1 or claim 8 .
【００２０】請求項１２に記載の発明は、請求項１また
は請求項８に記載の電動圧縮機を搭載した冷蔵庫とした
ものである。The invention according to claim 12 is the same as claim 1 or
Is a refrigerator equipped with the electric compressor according to claim 8 .
【００２１】請求項１３に記載の発明は、請求項１また
は請求項８に記載の電動圧縮機を搭載したエアコンとし
たものである。The invention according to claim 13 is the same as claim 1 or
Is an air conditioner equipped with the electric compressor according to claim 8 .
【００２２】以下、本発明の実施の形態について、図面
を用いて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２３】（実施の形態１）
図１は、第１の発明の実施の形態による電動圧縮機の断
面図である。図１において、電動要素６の回転子２のア
ルミニウム製エンドリング１の部分に表面処理層９を設
けている。回転子２は冷媒圧縮部４を駆動するために高
速に回転するので、燐系耐摩耗剤を含む冷凍機油と冷媒
３は撹拌され高速で回転子２に衝突する。しかし、アル
ミニウム製エンドリング１は表面処理層９で覆われてい
るので耐食性が向上しており、またアルミニウム部分が
燐系耐摩耗剤を含む冷凍機油と冷媒３に直接接触しない
ので、腐食が発生しない。表面処理を施さなかった場合
は、電動圧縮機を電源周波数１２０Ｈｚで運転した場合
には、アルミニウム製エンドリング１は約２０００時間
で腐食が発生し、数ｍｍの孔食がアルミニウム製エンド
リング１の表面のいたるところで観測できた。しかし表
面処理層９にアルマイト処理を施した場合は、約１０μ
ｍ厚の酸化被膜を付けることにより、電動圧縮機を同じ
条件で４０００時間運転しても腐食は発生しなかった。
また表面処理に、ほうろう処理，無電解ニッケルメッキ
処理，クロメート処理，亜鉛メッキ処理，樹脂の塗布処
理を行ってもアルマイト処理と同様の結果を得られた。(Embodiment 1) FIG. 1 is a sectional view of an electric compressor according to an embodiment of the first invention. In FIG. 1, a surface treatment layer 9 is provided on the aluminum end ring 1 of the rotor 2 of the electric element 6. Since the rotor 2 rotates at high speed to drive the refrigerant compression part 4, the refrigerating machine oil containing the phosphorus-based antiwear agent and the refrigerant 3 are agitated and collide with the rotor 2 at high speed. However, since the aluminum end ring 1 is covered with the surface treatment layer 9, the corrosion resistance is improved, and since the aluminum portion does not directly contact the refrigerating machine oil containing the phosphorus-based antiwear agent and the refrigerant 3, corrosion occurs. do not do. When the surface treatment was not applied and the electric compressor was operated at a power supply frequency of 120 Hz, the aluminum end ring 1 was corroded in about 2000 hours, and a pitting corrosion of several mm was generated on the aluminum end ring 1. It was possible to observe everywhere on the surface. However, when the alumite treatment is applied to the surface treatment layer 9, about 10 μm
By adding an m-thick oxide film, corrosion did not occur even when the electric compressor was operated under the same conditions for 4000 hours.
Moreover, the same result as the alumite treatment was obtained even when the surface treatment was performed by enamel treatment, electroless nickel plating treatment, chromate treatment, zinc plating treatment, and resin coating treatment.
【００２４】上記構成により、腐食されるアルミニウム
部分を腐食されない物質で表面処理し、腐食を促進する
燐系耐摩耗剤を含む冷凍機油と冷媒３が、アルミニウム
部分に直接接触しないように構成したため、電動要素６
の腐食が発生しない電動圧縮機を提供できる。また、ア
ルミニウム製エンドリング１に孔食が発生しないので、
アルミニウムの量が減少せずアルミニウム製エンドリン
グ１の中に流れる誘導電動機のトルクを発生する電流が
変化しないので、電動要素としての役割に問題が生じな
い。また、ウエイト８をカシメているツノ部に孔食が発
生しないので、ツノ部の強度不足によって回転子２の回
転応力によりウエイト８が脱落することはない。また、
冷凍機油と冷媒３の中にアルミニウムが溶け出さないの
で、電動圧縮機内で析出することはなく、アルミニウム
粒が冷媒圧縮部４の摺動部に入り込むことがないので、
電動圧縮機がロックするという致命的な欠陥も発生しな
い。With the above structure, the corroded aluminum portion is surface-treated with a non-corrosive substance so that the refrigerating machine oil containing the phosphorus-based antiwear agent for promoting the corrosion and the refrigerant 3 do not come into direct contact with the aluminum portion. Electric element 6
It is possible to provide an electric compressor that does not corrode. Moreover, since pitting corrosion does not occur in the aluminum end ring 1,
Since the amount of aluminum does not decrease and the current that generates the torque of the induction motor flowing in the aluminum end ring 1 does not change, there is no problem in its role as an electric element. In addition, since pitting does not occur at the horn portion where the weight 8 is crimped, the weight 8 does not fall off due to the rotational stress of the rotor 2 due to insufficient strength of the horn portion. Also,
Since aluminum does not dissolve in the refrigerating machine oil and the refrigerant 3, it does not deposit in the electric compressor and aluminum particles do not enter the sliding portion of the refrigerant compressing section 4.
There is no fatal defect that the electric compressor locks.
【００２５】（実施の形態２）
図２は、第２の発明の実施の形態による電動圧縮機の断
面図である。図２において電動要素６の回転子２のアル
ミニウム製エンドリング１を覆うカバー１０（１０ａは
上側のカバー，１０ｂは下側のカバー）を取り付けてい
る。腐食されるアルミニウム部分を覆うカバー１０を取
り付けることにより、燐系耐摩耗剤を含む冷凍機油と冷
媒３がアルミニウム部分に高速で衝突することが無くな
り、冷凍機油と冷媒の中に多量に溶け込んだ燐がアルミ
ニウムと接触する機会が極端に少なくなるので、アルミ
ニウム部分の腐食はほとんど進行しない。また、図３は
図２の実施の形態に加えてカバー１０内に樹脂１１を封
入した断面図である。図３においてカバー１０内に樹脂
１１を封入すれば、燐系耐摩耗剤を含む冷凍機油と冷媒
３はアルミニウム部分と接触しなくなるので、腐食は発
生しない。また、第１の発明のアルミニウム部分に樹脂
を塗布しただけの実施の形態では、衝撃によって樹脂層
が破壊される恐れがあるが、カバー１０内に樹脂１１を
封入した構成にすれば耐衝撃性が向上する。これにより
図２の実施の形態よりも確実に腐食が発生しない。(Second Embodiment) FIG. 2 is a sectional view of an electric compressor according to a second embodiment of the present invention. In FIG. 2, a cover 10 (10a is an upper cover and 10b is a lower cover) that covers the aluminum end ring 1 of the rotor 2 of the electric element 6 is attached. By attaching the cover 10 that covers the corroded aluminum part, the refrigerating machine oil containing the phosphorus-based antiwear agent and the refrigerant 3 do not collide with the aluminum part at high speed, and the phosphorus that has been dissolved in a large amount in the refrigerating machine oil and the refrigerant is eliminated. The corrosion of the aluminum part hardly progresses because the chances of contact with the aluminum are extremely reduced. Further, FIG. 3 is a sectional view in which a resin 11 is enclosed in a cover 10 in addition to the embodiment of FIG. In FIG. 3, if the resin 11 is enclosed in the cover 10, the refrigerating machine oil containing the phosphorus-based antiwear agent and the refrigerant 3 do not come into contact with the aluminum part, so that corrosion does not occur. Further, in the embodiment of the first invention in which the resin is simply applied to the aluminum portion, the resin layer may be destroyed by impact, but if the resin 11 is enclosed in the cover 10, the impact resistance is improved. Is improved. As a result, corrosion does not occur more reliably than in the embodiment of FIG.
【００２６】上記構成により、腐食されるアルミニウム
部分を覆うカバーを取り付けたので、実用上電動要素の
腐食が発生しない電動圧縮機を提供できる。また、前記
カバー内に樹脂を封入する構成にすることで電動要素の
腐食が全く発生しない電動圧縮機を提供できる。第２の
発明による他の効果についても、第１の発明で述べたの
と同様な理由で、電動要素としてのトルクの減少，ウエ
イトの脱落，電動圧縮機のロックといった問題は発生し
ない。With the above structure, since the cover for covering the corroded aluminum portion is attached, it is possible to provide the electric compressor in which the electric element is not corroded in practical use. Further, by encapsulating the resin in the cover, it is possible to provide an electric compressor in which corrosion of the electric element does not occur at all. With respect to the other effects of the second invention as well, for the same reason as described in the first invention, problems such as reduction of torque as an electric element, loss of weight, and lock of the electric compressor do not occur.
【００２７】[0027]
【発明の効果】以上のように本発明によれば、従来例に
比べて以下のような効果が得られる。As described above, according to the present invention, the following effects can be obtained as compared with the conventional example.
【００２８】第１の発明は、電動要素６の回転子２のア
ルミニウム製エンドリング１の部分に表面処理層９（例
えば、アルマイト処理，ほうろう処理，無電解ニッケル
メッキ処理，クロメート処理，亜鉛メッキ処理，樹脂の
塗布処理）を設けているので、アルミニウム部分の腐食
を促進する燐系耐摩耗剤を含む冷凍機油と冷媒３が、ア
ルミニウム部分に直接接触しないように構成したため、
電動要素の腐食が発生しない電動圧縮機を提供できる。
また、アルミニウム製エンドリング１に孔食が発生しな
いので、アルミニウムの量が減少せずアルミニウム製エ
ンドリング１の中に流れる誘導電動機のトルクを発生す
る電流が変化しないので、電動要素６としての役割に問
題が生じない。また、ウエイト８をカシメているツノ部
に孔食が発生しないので、ツノ部の強度不足によって回
転子２の回転応力によりウエイト８が脱落することはな
い。また、冷凍機油と冷媒３の中にアルミニウムが溶け
出さないので、電動圧縮機内で析出することはなく、ア
ルミニウム粒が冷媒圧縮部４の摺動部に入り込むことが
ないので、電動圧縮機がロックするという致命的な欠陥
も発生しない。In the first invention, a surface treatment layer 9 (for example, alumite treatment, enamel treatment, electroless nickel plating treatment, chromate treatment, zinc plating treatment) is applied to the aluminum end ring 1 of the rotor 2 of the electric element 6. , Resin coating treatment) is provided so that the refrigerating machine oil containing the phosphorus-based antiwear agent that promotes corrosion of the aluminum portion and the refrigerant 3 are configured so as not to come into direct contact with the aluminum portion.
It is possible to provide an electric compressor in which corrosion of the electric element does not occur.
Further, since pitting corrosion does not occur in the aluminum end ring 1, the amount of aluminum does not decrease and the current that generates the torque of the induction motor flowing in the aluminum end ring 1 does not change. No problem occurs. In addition, since pitting does not occur at the horn portion where the weight 8 is crimped, the weight 8 does not fall off due to the rotational stress of the rotor 2 due to insufficient strength of the horn portion. Further, since aluminum does not melt into the refrigerating machine oil and the refrigerant 3, it does not precipitate in the electric compressor, and aluminum particles do not enter the sliding portion of the refrigerant compressing section 4, so that the electric compressor is locked. There is no fatal defect.
【００２９】第２の発明は、電動要素６の回転子２のア
ルミニウム製エンドリング１を覆うカバー１０を取り付
けているので、腐食されるアルミニウム部分を覆うこと
により、燐系耐摩耗剤を含む冷凍機油と冷媒３がアルミ
ニウム部分に高速で衝突することが無くなり、冷凍機油
と冷媒の中に多量に溶け込んだ燐がアルミニウムと接触
する機会が極端に少なくなるので、アルミニウム部分の
腐食はほとんど進行せず、実用上電動要素６の腐食が発
生しない電動圧縮機を提供できる。また、カバー１０内
に樹脂１１を封入することにより、燐系耐摩耗剤を含む
冷凍機油と冷媒３はアルミニウム部分と接触しないよう
にできるので腐食は発生せず、電動要素６の腐食が全く
発生しない電動圧縮機を提供できる。また、第一の発明
のアルミニウム部分に樹脂を塗布しただけの実施例で
は、衝撃によって樹脂層が破壊される恐れがあるが、カ
バー１０内に樹脂１１を封入した構成にすれば耐衝撃性
が向上する。第二の発明による他の効果についても、第
一の発明で述べたのと同様な理由で、電動要素６として
のトルクの減少，ウエイトの脱落，電動圧縮機のロック
といった問題は発生しない。In the second aspect of the invention, since the cover 10 for covering the aluminum end ring 1 of the rotor 2 of the electric element 6 is attached, the refrigeration containing the phosphorus-based antiwear agent is covered by covering the corroded aluminum portion. Since the machine oil and the refrigerant 3 do not collide with the aluminum portion at high speed, the chances that the phosphorus dissolved in the refrigerating machine oil and the refrigerant in a large amount comes into contact with the aluminum are extremely small, and the corrosion of the aluminum portion hardly progresses. Thus, it is possible to provide an electric compressor in which the electric element 6 does not corrode in practice. Further, by encapsulating the resin 11 in the cover 10, the refrigerating machine oil containing the phosphorus-based antiwear agent and the refrigerant 3 can be prevented from coming into contact with the aluminum part, so that no corrosion occurs and the electric element 6 does not corrode. It is possible to provide an electric compressor that does not. Further, in the embodiment of the first invention in which the resin is simply applied to the aluminum portion, the resin layer may be destroyed by the impact, but the impact resistance is improved if the resin 11 is enclosed in the cover 10. improves. With respect to the other effects of the second invention, for the same reason as described in the first invention, problems such as a decrease in torque of the electric element 6, loss of weight, and locking of the electric compressor do not occur.
【図１】第１の発明の実施の形態による電動圧縮機の断
面図FIG. 1 is a sectional view of an electric compressor according to an embodiment of the first invention.
【図２】第２の発明の実施の形態による電動圧縮機の断
面図FIG. 2 is a sectional view of an electric compressor according to an embodiment of the second invention.
【図３】カバー内に樹脂を封入した第２の発明の実施の
形態の電動圧縮機の断面図FIG. 3 is a cross-sectional view of the electric compressor according to the second embodiment of the present invention in which a resin is enclosed in a cover.
【図４】 従来の電動圧縮機の断面図 FIG. 4 is a sectional view of a conventional electric compressor.
１ アルミニウム製エンドリング ２ 回転子 ３ 燐系耐摩耗剤を含む冷凍機油と冷媒 ４ 冷媒圧縮部 ５ 固定子 ６ 電動要素 ８ ウエイト ９ 表面処理層 １０ カバー １０ａ 上側のカバー １０ｂ 下側のカバー １１ 樹脂 1 Aluminum end ring 2 rotor Refrigerating machine oil and phosphorus containing phosphorus-based antiwear agents 4 Refrigerant compression section 5 stator 6 electric elements 8 weights 9 Surface treatment layer 10 covers 10a upper cover 10b lower cover 11 resin
Claims (13)
した電動圧縮機において、前記電動圧縮機の電動機の回
転子の２次導体アルミニウム部分に表面処理を施したこ
とを特徴とする電動圧縮機。1. An electric compressor in which a refrigerant containing no chlorine atom and refrigerating machine oil are enclosed , wherein a surface treatment is applied to a secondary conductor aluminum part of a rotor of a motor of the electric compressor. A characteristic electric compressor.
をアルマイト処理した請求項１記載の電動圧縮機。2. The electric compressor according to claim 1, wherein the surface of the aluminum portion of the secondary conductor of the rotor is anodized.
をほうろう処理した請求項１記載の電動圧縮機。3. The electric compressor according to claim 1, wherein the surface of the aluminum portion of the secondary conductor of the rotor is treated with enamel.
を無電解ニッケルメッキした請求項１記載の電動圧縮
機。4. The electric compressor according to claim 1, wherein the surface of the aluminum portion of the secondary conductor of the rotor is electroless nickel plated.
をクロメート処理した請求項１記載の電動圧縮機。5. The electric compressor according to claim 1, wherein the surface of the aluminum portion of the secondary conductor of the rotor is chromated.
を亜鉛メッキした請求項１記載の電動圧縮機。6. The electric compressor according to claim 1, wherein the surface of the aluminum portion of the secondary conductor of the rotor is galvanized.
に樹脂を塗布した請求項１記載の電動圧縮機。7. The electric compressor according to claim 1, wherein a resin is applied to the surface of the aluminum portion of the secondary conductor of the rotor.
した電動圧縮機において、前記電動圧縮機の電動機の回
転子の２次導体アルミニウム部分を覆うカバーを取り付
けたことを特徴とする電動圧縮機。8. An electric compressor in which a refrigerant containing no chlorine atom and refrigerating machine oil are enclosed , wherein a cover for covering a secondary conductor aluminum part of a rotor of an electric motor of the electric compressor is attached. A characteristic electric compressor.
カバー内に樹脂を封入した請求項８記載の電動圧縮機。9. The electric compressor according to claim 8, wherein a resin is enclosed in a cover which covers the aluminum portion of the secondary conductor of the rotor.
ルオロカーボン類またはハイドロカーボン類であること
を特徴とする請求項１または請求項８に記載の電動圧縮
機。 10. The electric compressor according to claim 1, wherein the refrigerant containing no chlorine atom is hydrofluorocarbons or hydrocarbons.
を加えたことを特徴とする請求項１または請求項８に記
載の電動圧縮機。 11. The electric compressor according to claim 1 , wherein a phosphorus antiwear agent is added to the refrigerating machine oil as an additive.
圧縮機を搭載した冷蔵庫。 12. A refrigerator equipped with the electric compressor according to claim 1 .
圧縮機を搭載したエアコン。 13. An air conditioner equipped with the electric compressor according to claim 1 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33002095A JP3475617B2 (en) | 1995-12-19 | 1995-12-19 | Electric compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33002095A JP3475617B2 (en) | 1995-12-19 | 1995-12-19 | Electric compressor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003284813A Division JP2004015999A (en) | 2003-08-01 | 2003-08-01 | Motor-driven compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09172759A JPH09172759A (en) | 1997-06-30 |
| JP3475617B2 true JP3475617B2 (en) | 2003-12-08 |
Family
ID=18227883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33002095A Expired - Lifetime JP3475617B2 (en) | 1995-12-19 | 1995-12-19 | Electric compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3475617B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9885347B2 (en) | 2013-10-30 | 2018-02-06 | Emerson Climate Technologies, Inc. | Components for compressors having electroless coatings on wear surfaces |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5407195B2 (en) * | 2008-06-27 | 2014-02-05 | 株式会社明電舎 | Induction motor rotor and method of manufacturing the same |
-
1995
- 1995-12-19 JP JP33002095A patent/JP3475617B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9885347B2 (en) | 2013-10-30 | 2018-02-06 | Emerson Climate Technologies, Inc. | Components for compressors having electroless coatings on wear surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09172759A (en) | 1997-06-30 |
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