JP2009002288A - Sliding member of compressor - Google Patents

Sliding member of compressor Download PDF

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JP2009002288A
JP2009002288A JP2007165807A JP2007165807A JP2009002288A JP 2009002288 A JP2009002288 A JP 2009002288A JP 2007165807 A JP2007165807 A JP 2007165807A JP 2007165807 A JP2007165807 A JP 2007165807A JP 2009002288 A JP2009002288 A JP 2009002288A
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scroll
compressor
sliding member
layer
orbiting scroll
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Hideo Hirano
秀夫 平野
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Panasonic Corp
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Panasonic Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding member of a compressor which is provided with high reliability without any risk of seizing occurring even during excessive operation when the lubrication state becomes harsh while achieving high streamlining by reducing weight and high-speed rotation. <P>SOLUTION: A surface modifying layer 23 is provided with an oxidized aluminum layer 24 on the front side with uneven and nonuniform tissue and an oxidized aluminum layer 25 on the substrate side with even and dense columnar tissue. Since the oxidized aluminum layer 24 on the front side is uneven and nonuniform it is rubbed between the mirror board 9a of a fixed scroll 9 or the end section of a blade 9b while steadily wearing away from fragile parts and the mirror board 10a of a spinning scroll 10 is appropriately adjusted. As the result, bumping against the mirror board 9a of the fixed scroll 9 or against the end section of the blade 9b is alleviated and anti-seizing property is improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、業務用や非業務用を問わず各種用途での冷凍サイクルや空調システムなどに使用される圧縮機、主として、スクロール圧縮機の摺動部材に関するものである。   The present invention relates to a compressor used for a refrigeration cycle, an air conditioning system, and the like for various uses regardless of business use or non-business use, and mainly relates to a sliding member of a scroll compressor.

従来、この種の圧縮機の摺動部材は、基材と表層部の二層構造にして表層部を基材と同じ粉末焼結材で構成しているものであり、基材にシリコン等の偏析部が存在しても、表層部がシリコン等の均一に分散した粉末燒結材であるため、切削仕上げ面も良好で、表面に疲労破壊の起点となるようなシリコンの脱落部が生じない信頼性の高い構成になっている（例えば、特許文献１参照）。   Conventionally, a sliding member of this type of compressor has a two-layer structure of a base material and a surface layer part, and the surface layer part is composed of the same powder sintered material as the base material. Even if there is a segregation part, the surface layer part is a powder sintered material that is uniformly dispersed in silicon, etc., so the cutting finish surface is good, and the surface does not have a silicon drop-off part that can cause fatigue failure It has a high configuration (see, for example, Patent Document 1).

図４、図５は特許文献１に記載された従来の圧縮機の摺動部材を示すものであり、すなわちスクロール圧縮機の旋回スクロールを示すものである。図に示すように、旋回スクロールは、円板状の鏡板１、その上面部１ｃから渦巻状に直立して形成されるラップ部２、および軸受部３から構成されている。ラップ部の高さは、その肉厚の約６倍程度になっている。鏡板１およびラップ部２の基材１ｂ、２ｂは一体に形成されており、材質は３０％のシリコンと、若干のニッケル、マグネシュームを含有したアルミニウムダイキャスト品である。また、鏡板１の上面部１ｃおよび側面部１ｄとラップ部２のラップ表層部２ａとは基材部と同じ材質の粉末燒結材で構成されている。
特開平３−２４２４８６号公報 4 and 5 show a sliding member of a conventional compressor described in Patent Document 1, that is, show a turning scroll of a scroll compressor. As shown in the figure, the orbiting scroll is composed of a disc-shaped end plate 1, a lap portion 2 formed upright in a spiral shape from an upper surface portion 1 c thereof, and a bearing portion 3. The height of the wrap portion is about 6 times the wall thickness. The end plate 1 and the base materials 1b and 2b of the lap portion 2 are integrally formed, and the material is an aluminum die-cast product containing 30% silicon, some nickel, and magnesium. Further, the upper surface portion 1c and the side surface portion 1d of the end plate 1 and the wrap surface layer portion 2a of the wrap portion 2 are made of a powder sintered material made of the same material as the base material portion.
JP-A-3-242486

しかしながら、上記旋回スクロールは、表層部１ａ，１ｄ，２ａがアルミニウム合金の粉末焼結体で形成されているが、この表層部１ａ，１ｄ，２ａが、上述したようにインサート成形により基材部１ｂ，２ｂを被覆するように形成されたのちにバインダを除去して焼結する工程を経て構成されることから、この表層部１ａ，１ｄ、２ａの最表面に部分的に薄いアルミニウムリッチ層が形成されており、この薄いアルミニウムリッチ層の存在によって以下のような課題がある。   However, in the orbiting scroll, the surface layer portions 1a, 1d, and 2a are formed of a powder sintered body of an aluminum alloy, and the surface layer portions 1a, 1d, and 2a are formed by insert molding as described above. , 2b is formed, and then the binder is removed and sintered, so that a thin aluminum-rich layer is partially formed on the outermost surface of the surface layer portions 1a, 1d, 2a. However, the presence of this thin aluminum-rich layer has the following problems.

すなわち、スクロール圧縮機では、過度運転時、特に除霜運転の開始時に液戻りが激しいために、旋回スクロールの回りにおいて一時的に潤滑油が不足する事態が発生する。また、除霜が進行するに従って吐出圧力が上昇するが、その吐出圧力の上昇によって旋回スクロールのスラスト面が固定スクロールに強く押し付けられるために、スラスト面で油膜切れが起こり易い。さらに、除霜運転に際しては、短時間で除霜を完了させることを目的として高速運転されるために、摩擦熱によってスラスト面の温度が高くなる。また、上記除霜などの過度運転時では、吸入温度と吐出温度との温度差が拡がることから、旋回スクロールの中央部の羽根が大きく熱膨張して伸び、この羽根の先端部が固定スクロールと接触して潤滑油が切れ、これに伴う摩擦熱によって摺動温度が高くなって熱膨張が更に促進され、潤滑状態が一層厳しくなる。   That is, in the scroll compressor, since the liquid return is severe at the time of excessive operation, particularly at the start of the defrosting operation, a situation where the lubricating oil temporarily becomes insufficient around the orbiting scroll occurs. Further, the discharge pressure increases as the defrosting progresses. However, since the thrust surface of the orbiting scroll is strongly pressed against the fixed scroll by the increase of the discharge pressure, the oil film is easily cut off on the thrust surface. Further, since the defrosting operation is performed at a high speed for the purpose of completing the defrosting in a short time, the temperature of the thrust surface is increased by the frictional heat. In addition, during excessive operation such as defrosting, the temperature difference between the suction temperature and the discharge temperature widens, so that the blade at the center of the orbiting scroll expands greatly and expands, and the tip of this blade is fixed to the fixed scroll. When the oil comes into contact and the lubricating oil is cut off, the frictional heat accompanying this increases the sliding temperature, further promoting thermal expansion, and the lubrication state becomes more severe.

上述のように潤滑状態が厳しくなったときには、旋回スクロールのスラスト面におけるシリコンを覆っている最表面の薄いアルミニウムリッチ層のシリコンに対する密着性が低いことから、このアルミニウムリッチ層が剥離する可能性があり、剥離した場合に焼付きを起こすおそれがある。そのため、上記旋回スクロールを備えたスクロール圧縮機は十分な信頼性を確保することができない。   As described above, when the lubrication state becomes severe, the adhesion of the thin aluminum-rich layer on the outermost surface covering the silicon on the thrust surface of the orbiting scroll to the silicon is low. Yes, there is a risk of seizure when peeled off. For this reason, the scroll compressor provided with the orbiting scroll cannot ensure sufficient reliability.

本発明は、上記従来の課題に鑑みてなされたもので、軽量化と高速回転による高効率化を達成しながらも、潤滑状態が厳しくなる過度運転時においても焼付きが発生するおそれのない高い信頼性を有する圧縮機の摺動部材を提供することを目的とするものである。   The present invention has been made in view of the above-described conventional problems, and achieves high weightlessness and high efficiency by high-speed rotation, and is high in that there is no risk of seizure even during excessive operation where the lubrication state becomes severe. An object of the present invention is to provide a compressor sliding member having reliability.

上記のような目的を達成するために、本発明の圧縮機の摺動部材は、表面側に不揃いで不均一な組織を有し、基材側に均一な柱状組織を有する表面改質層を少なくとも摺動面に設けたことを特徴としている。   In order to achieve the above object, the sliding member of the compressor of the present invention has a surface-modified layer having an uneven and uneven structure on the surface side and a uniform columnar structure on the substrate side. It is provided at least on the sliding surface.

このような構成では、摺動面に形成された不揃いで不均一な組織が長時間馴染み性を発揮することになり、当りの強いところでも徐々に摩耗が進み、運転しながら摺り合せが行われて摺動面は相手摺動部材によく馴染むため、耐焼付き性が高い摺動面が得られることとなる。   In such a configuration, the irregular and non-uniform structure formed on the sliding surface will show familiarity for a long time, and wear gradually progresses even in a strong contact, and the sliding is performed while driving. Since the sliding surface is well adapted to the mating sliding member, a sliding surface with high seizure resistance can be obtained.

本発明の圧縮機の摺動部材は、潤滑状態が厳しい大容量で多冷媒のシステムに適合する信頼性の高い圧縮機を提供することができる。   The sliding member of the compressor of the present invention can provide a highly reliable compressor that is suitable for a multi-refrigerant system having a large capacity and a severely lubricated state.

第１の発明は表面側に不揃いで不均一な組織を有し、基材側に均一な柱状組織を有する表面改質層を少なくとも摺動面に設けたことにより、長時間持続する馴染み性により摺動面の耐焼付き性が高くなり、大容量で多冷媒のシステムに適合する信頼性の高い圧縮機を提供できる。   The first invention has an uneven and uneven structure on the surface side, and a surface modification layer having a uniform columnar structure on the substrate side is provided on at least the sliding surface, so that the long-lasting familiarity The seizure resistance of the sliding surface is increased, and a highly reliable compressor that is compatible with a large capacity and multi-refrigerant system can be provided.

第２の発明は、特に、第１の発明の不揃いで不均一な組織と基材側の均一な柱状組織の間に傾斜層を設けたことにより、深さ方向に摩擦摩耗特性が連続的に変化することになり、摺動面の耐衝撃性を向上できる。   In the second invention, in particular, by providing an inclined layer between the uneven and non-uniform structure of the first invention and the uniform columnar structure on the substrate side, the frictional wear characteristics are continuously increased in the depth direction. The impact resistance of the sliding surface can be improved.

第３の発明は、特に、第１の発明の不揃いで不均一な組織を多孔質としたことにより、摺動面に油溜りが形成されることになり、摺動面の油切れを防止できる。   In the third invention, in particular, by making the irregular and non-uniform structure of the first invention porous, an oil pool is formed on the sliding surface, and it is possible to prevent the sliding surface from running out of oil. .

第４の発明は、特に、第１の発明の基材を硬質粒子が分散する軟質材料としたことにより、相手摺動部材との接触面積が増えることになり、摺動面の面圧を小さくできる。   In the fourth invention, in particular, by making the base material of the first invention a soft material in which hard particles are dispersed, the contact area with the mating sliding member is increased, and the surface pressure of the sliding surface is reduced. it can.

第５の発明は、特に、第４の発明の均一な柱状組織を硬質粒子の間に介在させたことにより、硬質粒子による相手摺動部材の支持に移行して高面圧摺動が可能になり、圧縮機の運転範囲を拡大できる。   In the fifth invention, in particular, the uniform columnar structure of the fourth invention is interposed between the hard particles, so that it is possible to move to support of the mating sliding member by the hard particles and to perform high surface pressure sliding. Thus, the operating range of the compressor can be expanded.

第６の発明は、特に、第４の発明の均一な柱状組織を硬質粒子より低硬度にしたことにより、摺動面の硬質粒子間に油膜が形成されることになり、圧縮機の摺動ロスを低減できる。   In the sixth aspect of the invention, in particular, the uniform columnar structure of the fourth aspect of the invention is made harder than the hard particles, so that an oil film is formed between the hard particles on the sliding surface, and the compressor slides. Loss can be reduced.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
本発明の圧縮機の摺動部材の実施の形態１につき、図１〜図３を参照しながら説明する。 (Embodiment 1)
The first embodiment of the sliding member of the compressor of the present invention will be described with reference to FIGS.

図１は本発明の一実施の形態に係る摺動部材を旋回スクロール１０に適用して構成した
スクロール圧縮機を示す一部破断した正面図である。このスクロール圧縮機は、密閉容器４内に圧縮機構部７とこれの駆動源のモータ部（図示せず）が内装されている。圧縮機構部７は、フレーム８に固定された固定スクロール９と、この固定スクロール９に対向配置された旋回スクロール１０と、フレーム８と旋回スクロール１０との間に設けられたオルダムリング１１と、旋回スクロール１０をモータ部に連結するクランク軸１２とを備えて構成されている。 FIG. 1 is a partially broken front view showing a scroll compressor configured by applying a sliding member according to an embodiment of the present invention to a turning scroll 10. In this scroll compressor, a compression mechanism section 7 and a motor section (not shown) as a driving source for the compression mechanism section 7 are housed in an airtight container 4. The compression mechanism unit 7 includes a fixed scroll 9 fixed to the frame 8, a turning scroll 10 disposed opposite to the fixed scroll 9, an Oldham ring 11 provided between the frame 8 and the turning scroll 10, and a turning A crankshaft 12 that connects the scroll 10 to the motor unit is provided.

固定スクロール９は、鏡板９ａ、羽根９ｂ、吸入ポート９ｃおよび吐出ポート９ｄを備えて構成されており、吸入ポート９ｃには吸入管５が接続されている。旋回スクロール１０は、これの縦断面図である図２に示すように、鏡板１０ａ，１０ｂ、羽根１０ｃおよび軸受部１０ｄを備えて構成されている。この旋回スクロール１０の羽根１０ｃと固定スクロール９の羽根９ｂとは対向配置されて互いに噛み合っているが、旋回スクロール１０の羽根１０ｃの高さは固定スクロール９の羽根９ｂの高さよりも若干低く設定されている。   The fixed scroll 9 includes an end plate 9a, a blade 9b, a suction port 9c, and a discharge port 9d, and a suction pipe 5 is connected to the suction port 9c. As shown in FIG. 2 which is a longitudinal sectional view of the orbiting scroll 10, the orbiting scroll 10 includes end plates 10a and 10b, blades 10c and a bearing portion 10d. The blade 10c of the orbiting scroll 10 and the blade 9b of the fixed scroll 9 are opposed to each other and mesh with each other, but the height of the blade 10c of the orbiting scroll 10 is set slightly lower than the height of the blade 9b of the fixed scroll 9. ing.

フレーム８には環状溝１３が形成されており、この環状溝１３には、フレーム８と旋回スクロール１０間をシールするシール部材１４が設けられ、このシール部材１４における環状溝１３に対する内側が高い圧力になるように設定され、環状溝１３に対する外側は中間圧力に設定されている。旋回スクロール１０は、上記圧力によって固定スクロール９に押し付けられており、旋回スクロール１０の羽根１０ｃの先端部の隙間は潤滑油（図示せず）によってシールされている。   An annular groove 13 is formed in the frame 8, and a seal member 14 that seals between the frame 8 and the orbiting scroll 10 is provided in the annular groove 13, and the inside of the seal member 14 with respect to the annular groove 13 has a high pressure. The outer side with respect to the annular groove 13 is set to an intermediate pressure. The orbiting scroll 10 is pressed against the fixed scroll 9 by the pressure described above, and the gap at the tip of the blade 10c of the orbiting scroll 10 is sealed with lubricating oil (not shown).

上記旋回スクロール１０の構成について、図３を参照しながら説明する。図３は旋回スクロール１０の表層部の断面組織を模式的に示した模式図である。旋回スクロール１０は、軟質基材であるアルミニウム２０に硬質粒子である微細な共晶シリコン２１を分散させてなるアルミニウム−シリコン系合金２２を用いて鋳造することにより形成されている。さらに、旋回スクロール１０における摺動面、つまり鏡板１０ａと羽根１０ｃの表層部には、表面改質層２３が形成されている。この表面改質層２３は、不揃いで不均一な組織を有する表面側の酸化アルミニウム層２４と、均一で緻密な柱状組織を有する基材側の酸化アルミニウム層２５と、不揃いで不均一な組織を有する表面側の酸化アルミニウム層２４と均一で緻密な柱状組織を有する基材側の酸化アルミニウム層２５が混在する傾斜層２６より構成されている。表面側の酸化アルミニウム層２４は多孔質であり、また微細な亀裂２７を有するものである。また、基材側の酸化アルミニウム層２５は均一で緻密な柱状組織が共晶シリコン２１の間に介在し、その硬度は共晶シリコン２１より低く設定されているものである。   The configuration of the orbiting scroll 10 will be described with reference to FIG. FIG. 3 is a schematic diagram schematically showing a cross-sectional structure of the surface layer portion of the orbiting scroll 10. The orbiting scroll 10 is formed by casting using an aluminum-silicon alloy 22 in which fine eutectic silicon 21 as hard particles is dispersed in aluminum 20 as a soft base material. Furthermore, a surface modification layer 23 is formed on the sliding surface of the orbiting scroll 10, that is, on the surface layer portion of the end plate 10a and the blade 10c. The surface-modified layer 23 includes a surface-side aluminum oxide layer 24 having an uneven and non-uniform structure, a substrate-side aluminum oxide layer 25 having a uniform and dense columnar structure, and an uneven and non-uniform structure. The surface-side aluminum oxide layer 24 and the base-side aluminum oxide layer 25 having a uniform and dense columnar structure are mixed to form an inclined layer 26. The aluminum oxide layer 24 on the surface side is porous and has fine cracks 27. The aluminum oxide layer 25 on the substrate side has a uniform and dense columnar structure interposed between the eutectic silicon 21, and its hardness is set lower than that of the eutectic silicon 21.

次に、上記スクロール圧縮機の動作について説明する。   Next, the operation of the scroll compressor will be described.

モータ部の回転は、クランク軸１２を介して旋回スクロール１０に伝達されて、オルダムリング１１と協働して旋回スクロール１０を旋回運動させる。旋回スクロール１０の羽根１０ｃと固定スクロール９の羽根９ｂとは、対向配置されて互いに噛み合っており、旋回スクロール１０の旋回運動に伴って吸入管５から吸入ポート９ｃを介して冷媒を吸入し、この冷媒を圧縮する。この圧縮された冷媒は、吐出ポート９ｄからリード弁１５を押し開いて密閉容器４内に吐出されたのち、吐出管６から密閉容器４の外部に導き出される。この運転時には密閉容器４内が高圧に保持されている。   The rotation of the motor unit is transmitted to the orbiting scroll 10 via the crankshaft 12 and causes the orbiting scroll 10 to orbit in cooperation with the Oldham ring 11. The blades 10c of the orbiting scroll 10 and the blades 9b of the fixed scroll 9 are opposed to each other and mesh with each other. As the orbiting scroll 10 rotates, the refrigerant is sucked from the suction pipe 5 through the suction port 9c. Compress the refrigerant. This compressed refrigerant pushes the reed valve 15 through the discharge port 9d and discharges it into the sealed container 4, and then is led out of the sealed container 4 from the discharge pipe 6. During this operation, the inside of the sealed container 4 is held at a high pressure.

運転中、旋回スクロール１０は固定スクロール９に強く押し付けられるが、加工上避けられないうねり、粗さや段差などのために、旋回スクロール１０の鏡板１０ａと固定スクロール９の鏡板９ａおよび羽根９ｂの先端部との接触面において信頼性上好ましくない高面圧が発生する。しかし、表面側の酸化アルミニウム層２５が不揃いで不均一であるがために脆い部分から徐々に摩滅しながら固定スクロール９の鏡板９ａや羽根９ｂの先端部と
の間で摺り合せが行われて旋回スクロール１０の鏡板１０ａは適度に調整される。その結果、固定スクロール９の鏡板９ａや羽根９ｂの先端部への当りが緩和されて耐焼付き性が向上し、潤滑状態が厳しい大容量で多冷媒のシステムでもスクロール圧縮機の信頼性を十分確保できる。 During operation, the orbiting scroll 10 is strongly pressed against the fixed scroll 9, but due to the swell, roughness, steps, etc. that are unavoidable in processing, the end portions of the end plate 10a of the orbiting scroll 10, the end plate 9a of the fixed scroll 9, and the blades 9b. High contact pressure, which is unfavorable in terms of reliability, occurs at the contact surface. However, the aluminum oxide layer 25 on the surface side is uneven and non-uniform, so that it gradually slides away from the fragile part and is rubbed between the end plate 9a of the fixed scroll 9 and the tip of the blade 9b. The end plate 10a of the scroll 10 is adjusted appropriately. As a result, the contact of the fixed scroll 9 with the end of the end plate 9a and the blade 9b is eased and seizure resistance is improved, and the reliability of the scroll compressor is sufficiently ensured even in a large capacity and multi-refrigerant system where the lubrication state is severe. it can.

また、低温時の暖房運転では、着霜が激しくなると、除霜運転に強制的に切り換えられるが、その際に、スクロール圧縮機への激しい液戻りが発生して旋回スクロール１０の鏡板１０ａと羽根１０ｃに残留していた潤滑油が洗い流されてしまう。しかし、多孔質である表面側の酸化アルミニウム層２２やそこに形成された微細な亀裂２７が油溜りとして働き、そこに保持されていた潤滑油が摺動面に新に供給されるため、旋回スクロール１０の鏡板１０ａの油切れを防止する。その結果、液戻り時でも摺動面に潤滑油が確保され、過渡運転におけるスクロール圧縮機の耐久性を向上できる。   Further, in the heating operation at a low temperature, when frosting becomes intense, the operation is forcibly switched to the defrosting operation. At that time, a severe liquid return to the scroll compressor occurs, and the end plate 10a and the blades of the orbiting scroll 10 The lubricating oil remaining in 10c is washed away. However, since the porous aluminum oxide layer 22 on the surface side and the fine cracks 27 formed there act as an oil reservoir, and the lubricating oil retained therein is newly supplied to the sliding surface, Oil end of the end plate 10a of the scroll 10 is prevented. As a result, lubricating oil is ensured on the sliding surface even when the liquid is returned, and the durability of the scroll compressor during transient operation can be improved.

また、上記除霜運転によって除霜効果が進むのに伴い短時間で吐出圧力が上昇するが、それに伴う温度変化も大きくて固定スクロール９が変形し、旋回スクロール１０との摺動は一層厳しくなる。しかし、基材がアルミニウム−シリコン系合金２２であるため旋回スクロール９は変形しやすく、旋回スクロール１０の鏡板１０ａが変形して固定スクロール９の鏡板９ａとはね９ｂの先端に全体的に当る様になり、旋回スクロール１０の鏡板１０ａにおける接触面圧の上昇を抑制することができる。その結果、除霜運転におけるスクロール圧縮機の耐久性を向上できる。   Further, as the defrosting effect is advanced by the defrosting operation, the discharge pressure rises in a short time, but the accompanying temperature change is large, the fixed scroll 9 is deformed, and the sliding with the orbiting scroll 10 becomes more severe. . However, since the base material is the aluminum-silicon alloy 22, the orbiting scroll 9 is easily deformed, so that the end plate 10a of the orbiting scroll 10 is deformed and hits the end of the end plate 9a and the spring 9b of the fixed scroll 9 as a whole. Thus, an increase in contact surface pressure on the end plate 10a of the orbiting scroll 10 can be suppressed. As a result, the durability of the scroll compressor in the defrosting operation can be improved.

また、高負荷運転では、表面側の酸化アルミニウム層２３が摩滅して基材側の酸化アルミニウム層２５に至り、柱状組織の中で共晶シリコン２１が露出してくる。固定スクロール９の支持は旋回スクロール１０の鏡板１０ａの表面に露出した共晶シリコン２１による支持に移行する。硬度が高く、かつ非凝着性が高い共晶シリコン２１が固定スクロール９を支持するため摩耗の進行は抑制されるが、更に高負荷での運転が可能になり、スクロール圧縮機の運転範囲を拡大できる。   Further, in a high load operation, the aluminum oxide layer 23 on the surface side wears down to the aluminum oxide layer 25 on the base material side, and the eutectic silicon 21 is exposed in the columnar structure. The support of the fixed scroll 9 shifts to the support by the eutectic silicon 21 exposed on the surface of the end plate 10 a of the orbiting scroll 10. Although the eutectic silicon 21 having high hardness and high non-adhesiveness supports the fixed scroll 9, the progress of wear is suppressed, but it becomes possible to operate at a higher load, and the operating range of the scroll compressor is reduced. Can be expanded.

また、高負荷運転では、固定スクロール９が旋回スクロール１０の鏡板１０ａの共晶シリコン２１に支持されている状態で、基材側の酸化アルミニウム層２５を形成する柱状組織はその硬度が共晶シリコン２１より低いため、固定スクロール９との摺動により摩耗し、共晶シリコン２１の間には浅い凹部が形成される。そこに油膜が形成されて油圧が発生して旋回スクロール１０の鏡板１０ａと固定スクロール９の摺動は低摩擦になり、スクロール圧縮機の摺動ロスを低減できる。   In a high load operation, the columnar structure forming the aluminum oxide layer 25 on the substrate side has a hardness of eutectic silicon while the fixed scroll 9 is supported by the eutectic silicon 21 of the end plate 10a of the orbiting scroll 10. Since it is lower than 21, it is worn by sliding with the fixed scroll 9, and a shallow recess is formed between the eutectic silicon 21. An oil film is formed there to generate hydraulic pressure, and the sliding between the end plate 10a of the orbiting scroll 10 and the fixed scroll 9 becomes low friction, and the sliding loss of the scroll compressor can be reduced.

また、液戻り時に発生する液圧縮や異物噛みなどによって、スクロール圧縮機の旋回スクロール１０はフレーム８や固定スクロール９などに衝突して大きな衝撃荷重が発生する。しかし、旋回スクロール１０の表面改質層２３は、傾斜層２６によって摩擦摩耗特性が深さ方向に順次変化していく構成になっているので、幅広い衝撃荷重の大きさに対して焼き付くことなく摺動できる。すなわち、旋回スクロール１０の耐衝撃性が向上し、液圧縮や異物噛みに強いスクロール圧縮機が得られる。   Further, the scroll 10 of the scroll compressor collides with the frame 8 or the fixed scroll 9 due to liquid compression or foreign matter biting that occurs when the liquid returns, and a large impact load is generated. However, since the surface modification layer 23 of the orbiting scroll 10 has a structure in which the frictional wear characteristics are sequentially changed in the depth direction by the inclined layer 26, the sliding surface is not baked against a wide range of impact loads. I can move. That is, the impact resistance of the orbiting scroll 10 is improved, and a scroll compressor that is strong against liquid compression and foreign matter biting is obtained.

以上のように、本発明にかかる圧縮機の摺動部材は、表面改質層によって耐焼付き性を向上するものであり、業務用、および非業務用を問わず各種用途での冷凍空調や給湯等の圧縮機や各種流体機械にも適用できる。   As described above, the sliding member of the compressor according to the present invention improves the seizure resistance by the surface modification layer, and is used for refrigeration air conditioning and hot water supply in various applications regardless of business use or non-business use. It can also be applied to compressors such as these and various fluid machines.

本発明の実施の形態１に係る摺動部材を旋回スクロールに適用して構成したスクロール圧縮機を示す一部破断した正面図The partially broken front view which shows the scroll compressor comprised by applying the sliding member which concerns on Embodiment 1 of this invention to a turning scroll 同上の旋回スクロールの縦断面図Longitudinal sectional view of the orbiting scroll 同上の旋回スクロールの表層部の断面組織を模式的に示した模式図Schematic diagram schematically showing the cross-sectional structure of the surface layer of the orbiting scroll 従来のスクロール圧縮機の旋回スクロールの外観を示す斜視図The perspective view which shows the external appearance of the turning scroll of the conventional scroll compressor 従来の旋回スクロールの部分断面図Partial sectional view of a conventional orbiting scroll

符号の説明Explanation of symbols

１０ 旋回スクロール
１０ａ 鏡板
１０ｂ 鏡板
２０ アルミニウム
２１ 共晶シリコン
２２ アルミニウム−シリコン系合金
２３ 表面改質層
２４ 表面側の酸化アルミニウム層
２５ 基材側の酸化アルミニウム層
２６ 傾斜層
２７ 微細な亀裂 DESCRIPTION OF SYMBOLS 10 Orbiting scroll 10a End plate 10b End plate 20 Aluminum 21 Eutectic silicon 22 Aluminum-silicon system alloy 23 Surface modification layer 24 Surface side aluminum oxide layer 25 Base material side aluminum oxide layer 26 Tilting layer 27 Fine crack

Claims (6)

表面側に不揃いで不均一な組織を有し、基材側に均一な柱状組織を有する表面改質層を少なくとも摺動面に設けた圧縮機の摺動部材。 A sliding member of a compressor having a surface modification layer having an irregular and non-uniform structure on the surface side and a uniform columnar structure on a base material side at least on a sliding surface. 表面側の不揃いで不均一な組織と基材側の均一な柱状組織の間に傾斜層を設けた請求項１に記載の圧縮機の摺動部材。 The sliding member of the compressor according to claim 1, wherein an inclined layer is provided between the uneven and nonuniform structure on the surface side and the uniform columnar structure on the substrate side. 不揃いで不均一な組織を多孔質とした請求項１に記載の圧縮機の摺動部材。 The sliding member of the compressor according to claim 1, wherein the uneven and non-uniform structure is porous. 基材を硬質粒子が分散する軟質材料とした請求項１に記載の圧縮機の摺動部材。 The sliding member of the compressor according to claim 1, wherein the base material is a soft material in which hard particles are dispersed. 均一な柱状組織を硬質粒子の間に介在させた請求項４に記載の圧縮機の摺動部材。 The sliding member for a compressor according to claim 4, wherein a uniform columnar structure is interposed between the hard particles. 均一な柱状組織を硬質粒子より低硬度にした請求項４に記載の圧縮機の摺動部材。 The sliding member for a compressor according to claim 4, wherein the uniform columnar structure has a lower hardness than the hard particles.
JP2007165807A 2007-06-25 2007-06-25 Sliding member of compressor Pending JP2009002288A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018097280A1 (en) * 2016-11-28 2018-05-31 パナソニックＩｐマネジメント株式会社 Oxide coating film formed on substrate surface of iron-based sintered body, sliding member provided with said oxide coating film, and device provided with said sliding member

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000257555A (en) * 1999-03-08 2000-09-19 Toyota Autom Loom Works Ltd Compressor
JP2004263671A (en) * 2003-03-04 2004-09-24 Hitachi Koki Co Ltd Scroll type fluid machine
JP2004277812A (en) * 2003-03-14 2004-10-07 Shinsuke Mochizuki Al BASED COMPOSITE MEMBER, AND PRODUCTION METHOD THEREFOR
JP2005076611A (en) * 2003-09-03 2005-03-24 Matsushita Electric Ind Co Ltd Sliding member of compressor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000257555A (en) * 1999-03-08 2000-09-19 Toyota Autom Loom Works Ltd Compressor
JP2004263671A (en) * 2003-03-04 2004-09-24 Hitachi Koki Co Ltd Scroll type fluid machine
JP2004277812A (en) * 2003-03-14 2004-10-07 Shinsuke Mochizuki Al BASED COMPOSITE MEMBER, AND PRODUCTION METHOD THEREFOR
JP2005076611A (en) * 2003-09-03 2005-03-24 Matsushita Electric Ind Co Ltd Sliding member of compressor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018097280A1 (en) * 2016-11-28 2018-05-31 パナソニックＩｐマネジメント株式会社 Oxide coating film formed on substrate surface of iron-based sintered body, sliding member provided with said oxide coating film, and device provided with said sliding member
CN109996901A (en) * 2016-11-28 2019-07-09 松下知识产权经营株式会社 Iron series sintered body substrate surface formed oxidation overlay film, be formed with the sliding component of the oxidation overlay film and with the equipment of the sliding component
EP3546613A4 (en) * 2016-11-28 2019-10-02 Panasonic Intellectual Property Management Co., Ltd. Oxide coating film formed on substrate surface of iron-based sintered body, sliding member provided with said oxide coating film, and device provided with said sliding member
JPWO2018097280A1 (en) * 2016-11-28 2019-10-17 パナソニックＩｐマネジメント株式会社 Oxide film formed on the surface of a base material of an iron-based sintered body, a sliding member on which this oxide film is formed, and an apparatus provided with this sliding member
JP7065424B2 (en) 2016-11-28 2022-05-12 パナソニックＩｐマネジメント株式会社 An oxide film formed on the surface of the base material of an iron-based sintered body, a sliding member on which the oxide film is formed, and a device provided with this sliding member.
CN109996901B (en) * 2016-11-28 2022-11-15 松下知识产权经营株式会社 Oxide film, sliding member having the same formed thereon, and apparatus having the sliding member

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