JP3190541B2 - Rotary compressor - Google Patents
Rotary compressorInfo
- Publication number
- JP3190541B2 JP3190541B2 JP08385595A JP8385595A JP3190541B2 JP 3190541 B2 JP3190541 B2 JP 3190541B2 JP 08385595 A JP08385595 A JP 08385595A JP 8385595 A JP8385595 A JP 8385595A JP 3190541 B2 JP3190541 B2 JP 3190541B2
- Authority
- JP
- Japan
- Prior art keywords
- crystal
- iron
- rotary compressor
- compression mechanism
- chromium
- 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 - Fee Related
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- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷凍サイクル等に使用
する回転式圧縮機の摺動部品の摺動部分への表面処理に
関し、特に信頼性の向上に係わるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment for a sliding part of a sliding part of a rotary compressor used in a refrigeration cycle or the like, and more particularly to improvement of reliability.
【０００２】[0002]
【従来の技術】冷凍サイクル等に使用する回転式圧縮機
には従来から冷媒としてＣＦＣ−１２（ジクロロ・ジフ
ロロ・メタン、ＣＣｌ2Ｆ2）やＨＣＦＣ−２２（モノク
ロロ・ジフロロ・メタン、ＣＨＣｌＦ2）が主に使用さ
れてきた。BACKGROUND ART CFC-12 as the refrigerant conventionally a rotary compressor used in a refrigeration cycle or the like (dichloro-difluoro-methane, CCl 2 F 2) or HCFC-22 (monochloro-difluoro-methane, CHClF 2) Has been mainly used.
【０００３】近年、オゾン層の破壊による人体や生物系
に対する影響の観点からＣＦＣ−１２が使用規制の対象
となっていおり、その製造は１９９５年末で停止する。[0003] In recent years, the use of CFC-12 has been subject to use restrictions from the viewpoint of the effects on the human body and biological systems due to the destruction of the ozone layer, and the production of CFC-12 will be stopped at the end of 1995.
【０００４】そこで代わりとなる代替冷媒が必要とな
り、ＣＦＣ−１２の代替冷媒として分子内に塩素（Ｃ
ｌ）原子を含まないＨＦＣ−１３４ａ（１，１，１，−
テトラ・フロロ・エタン、ＣＨＦ2ＣＦ3）等の冷媒が開
発された。Therefore, an alternative refrigerant is required, and chlorine (C) is contained in the molecule as an alternative refrigerant for CFC-12.
l) HFC-134a containing no atoms (1,1,1,-
Refrigerants such as tetrafluoroethane, CHF 2 CF 3 ) have been developed.
【０００５】ＨＦＣ−１３４ａはオゾン破壊係数（ＯＤ
Ｐ）が０であり、温度−圧力特性等の熱物性がＣＦＣ−
１２と類似しているため、従来からＣＦＣ−１２を用い
ていた冷蔵庫、除湿機、カーエアコン等の冷凍装置や冷
媒圧縮機の構造を大きく変更することなく実用化出来る
と言われてきた。HFC-134a has an ozone depletion potential (OD
P) is 0, and the thermophysical properties such as temperature-pressure characteristics are CFC-
It is said that it can be put to practical use without largely changing the structure of a refrigerator, a refrigerator, a dehumidifier, a car air conditioner, or other refrigeration equipment or a refrigerant compressor that conventionally used CFC-12.
【０００６】しかし、ＨＦＣ−１３４ａは従来のＣＦＣ
−１２の冷凍装置に使用されてきた鉱油やアルキルベン
ゼン等の合成油といった冷凍機油との間にはほとんど相
溶性が無く冷凍サイクル内へ冷凍機油が残留する可能性
がある。However, HFC-134a is a conventional CFC.
There is almost no compatibility with refrigeration oils such as mineral oils and synthetic oils such as alkylbenzenes used in refrigeration systems of -12, and there is a possibility that the refrigeration oil remains in the refrigeration cycle.
【０００７】またＣＦＣ−１２はその分子内に塩素（Ｃ
ｌ）原子を含んでいるため摺動部において金属基材の鉄
（Ｆｅ）原子と反応して自己潤滑性を有し、耐摩耗性に
優れる塩化鉄（ＦｅＣｌｘ）膜を形成した。一方、ＨＦ
Ｃ−１３４ａは塩素原子を含んでいないため塩化鉄膜を
形成しない。CFC-12 has chlorine (C
l) Since it contains atoms, it reacts with iron (Fe) atoms of the metal base material in the sliding portion to form an iron chloride (FeClx) film having self-lubricating properties and excellent wear resistance. On the other hand, HF
Since C-134a does not contain a chlorine atom, it does not form an iron chloride film.
【０００８】この様な状況では、回転式圧縮機の信頼性
を高めるため妥当な潤滑油を選定することに加えて冷媒
自身の潤滑性を補うために耐摩耗性に優れた摺動材料が
必要である。[0008] In such a situation, in addition to selecting an appropriate lubricating oil to enhance the reliability of the rotary compressor, a sliding material having excellent wear resistance is required to supplement the lubrication of the refrigerant itself. It is.
【０００９】従来の回転式圧縮機としては特開平５−１
８３５７号公報に示されているものがある。ここでは摺
動部の一方が鋳鉄から成り、他方がＰＶＤ法によって形
成されたクロム（Ｃｒ）と窒素（Ｎ）とを主成分とする
化合物層を表面に有する鉄系金属材から成る。A conventional rotary compressor is disclosed in
There is what is shown in the 8357 issue public report. Here, one of the sliding portions is made of cast iron, and the other is made of an iron-based metal material having on its surface a compound layer mainly composed of chromium (Cr) and nitrogen (N) formed by a PVD method.
【００１０】以下図面を参照しながら上記従来の圧縮機
の一例について説明する。図２は従来の回転式圧縮機の
縦断面図であり、図３は圧縮機構の要部断面図である。Hereinafter, an example of the conventional compressor will be described with reference to the drawings. FIG. 2 is a longitudinal sectional view of a conventional rotary compressor, and FIG. 3 is a sectional view of a main part of a compression mechanism.
【００１１】図２、図３において、１は密閉ケーシン
グ、２はステーター、３はローター、４はモーター機構
でありシャフト８を介してシリンダー１０、ローラー１
３、クランク１２、ベーン１４、ベアリング９及び１
１、スプリング１５により構成される圧縮機構５と連結
している。そして、摺動部材の一方シリンダー１０は鋳
鉄より成り、他方のベーン１４はＰＶＤ法によって形成
されたクロム（Ｃｒ）と窒素（Ｎ）とを主成分とする化
合物層を表面に有する鉄系金属材から成る。１６及び１
７はシリンダー１０内でローラー１３とクランク１２と
ベーン１４により構成される吸入室と吐出室である。2 and 3, reference numeral 1 denotes a closed casing, 2 denotes a stator, 3 denotes a rotor, and 4 denotes a motor mechanism.
3, crank 12, vane 14, bearings 9 and 1
1. It is connected to a compression mechanism 5 constituted by a spring 15. One cylinder 10 of the sliding member is made of cast iron, and the other vane 14 is an iron-based metal material having on its surface a compound layer mainly composed of chromium (Cr) and nitrogen (N) formed by a PVD method. Consists of 16 and 1
Reference numeral 7 denotes a suction chamber and a discharge chamber formed of a roller 13, a crank 12, and a vane 14 in the cylinder 10.
【００１２】６は吸入管でシリンダー１０の吸入口を介
して吸入室１６と連通している。１９は吐出口で密閉ケ
ーシング１内に連通している。２０はケーシング内の冷
凍機油である。Reference numeral 6 denotes a suction pipe which communicates with a suction chamber 16 via a suction port of a cylinder 10. A discharge port 19 communicates with the inside of the closed casing 1. 20 is a refrigerator oil in the casing.
【００１３】７は吐出管、１８は吸入管、１９は吐出口
である。上記従来の技術はＰＶＤ法によって形成された
クロム（Ｃｒ）と窒素（Ｎ）とを主成分とする化合物層
を表面に有する鉄系金属材から成ることを特徴としてお
り、クロム（Ｃｒ）と窒素（Ｎ）を主成分とする化合物
が全て耐摩耗性を向上させる物であるとして使われてい
る。7 is a discharge pipe, 18 is a suction pipe, and 19 is a discharge port. The above prior art is characterized by being made of an iron-based metal material having on its surface a compound layer mainly composed of chromium (Cr) and nitrogen (N) formed by a PVD method. All compounds containing (N) as a main component are used as substances that improve wear resistance.
【００１４】[0014]
【発明が解決しようとする課題】しかしながらＰＶＤ法
によって形成されたクロム（Ｃｒ）と窒素（Ｎ）とを主
成分とする化合物として多くの種類が存在する。また、
上記化合物の種類によって耐摩耗性が異なることより、
従来の技術ではクロム（Ｃｒ）と窒素（Ｎ）を主成分と
する化合物の種類が特定されておらずその効果は不明で
あるとの課題があった。However, there are many kinds of compounds mainly composed of chromium (Cr) and nitrogen (N) formed by the PVD method. Also,
Because the abrasion resistance differs depending on the type of the compound,
In the prior art, there was a problem that the type of the compound containing chromium (Cr) and nitrogen (N) as main components was not specified, and the effect was unknown.
【００１５】本発明は、上記従来の課題を解決するもの
であり、信頼性の向上を目的としている。The present invention solves the above-mentioned conventional problems, and aims at improving reliability.
【００１６】[0016]
【課題を解決するための手段】この目的を達成するため
本発明は密閉された容器内に圧縮機構と、冷媒と、冷凍
機油とを内装した密閉型回転式圧縮機において、前記圧
縮機構における摺動材料の一方が鋳鉄、鉄系燒結材料ま
たはアルミニウム複合材料から成り、他方がＰＶＤ法に
より形成されたクロム（Ｃｒ）と窒素（Ｎ）の化合物の
結晶がＣｒＮとＣｒ2Ｎの混合結晶系でＸ線回折試験に
よるＣｒＮの最大結晶配向強度に対するＣｒ2Ｎの最大
結晶配向強度の比率が８０％以下の混合結晶構造である
化合物層を表面に有する鉄系材料から成ることを特徴と
する。SUMMARY OF THE INVENTION To achieve this object, the present invention relates to a hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a sealed container. One of the moving materials is made of cast iron, an iron-based sintered material or an aluminum composite material, and the other is a mixed crystal system of chromium (Cr) and nitrogen (N) formed by a PVD method, which is a mixture of CrN and Cr 2 N. It is characterized by comprising an iron-based material having on its surface a compound layer having a mixed crystal structure in which the ratio of the maximum crystal orientation intensity of Cr 2 N to the maximum crystal orientation intensity of CrN in the X-ray diffraction test is 80% or less.
【００１７】また、密閉された容器内に圧縮機構と、冷
媒と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物の結晶がＣｒＮとＣｒ2Ｎの混合結晶系でＸ線
回折試験によるＣｒＮ結晶構造のミラー指数（２００）
面の結晶配向強度がＣｒＮ結晶構造及びＣｒ2Ｎ結晶構
造における結晶配向強度の総和の３０％以上である化合
物層を表面に有する鉄系材料から成ることを特徴とす
る。Further, in a hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a closed container, one of the sliding materials in the compression mechanism is cast iron, iron-based sintered material or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
Is a mixed crystal system of CrN and Cr 2 N, and a Miller index (200) of the CrN crystal structure by an X-ray diffraction test.
It is characterized by comprising an iron-based material having on its surface a compound layer whose surface has a crystal orientation strength of 30% or more of the sum of the crystal orientation strengths in the CrN crystal structure and the Cr 2 N crystal structure.
【００１８】また、密閉された容器内に圧縮機構と、冷
媒と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物の結晶構造が立方晶単独であり、その格子定数
ａが０．４１６ｎｍ以上である化合物層を表面に有する
鉄系材料から成ることを特徴とする。Further, in a hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a closed container, one of the sliding materials in the compression mechanism is cast iron, iron-based sintered material or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
Is characterized by being composed of an iron-based material having, on its surface, a compound layer having a cubic single crystal structure and a lattice constant a of 0.416 nm or more.
【００１９】また、密閉された容器内に圧縮機構と、冷
媒と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物で格子定数ａが０．４１６ｎｍ以上の立方晶と
六方晶の混合結晶構造である化合物層を表面に有する鉄
系材料から成ることを特徴とする。Further, in a hermetic rotary compressor in which a compression mechanism, a refrigerant, and a refrigerating machine oil are housed in a closed container, one of the sliding materials in the compression mechanism is cast iron, iron-based sintered material or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
Characterized in that it is made of an iron-based material having on its surface a compound layer having a mixed crystal structure of a cubic crystal and a hexagonal crystal having a lattice constant a of 0.416 nm or more.
【００２０】[0020]
【作用】Ｘ線回折試験により求めたＰＶＤ法によって形
成されたクロム（Ｃｒ）と窒素（Ｎ）の化合物層のＣｒ
Ｎの最大結晶配向強度に対するＣｒ2Ｎの最大結晶配向
強度の比率を制限することにより耐摩耗性が向上する。The Cr of the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method obtained by the X- ray diffraction test
By limiting the ratio of the maximum crystal orientation intensity of Cr 2 N to the maximum crystal orientation intensity of N, wear resistance is improved.
【００２１】また、Ｘ線回折試験により求めたＰＶＤ法
によって形成されたクロム（Ｃｒ）と窒素（Ｎ）の化合
物層のＣｒＮの（２００）面の結晶配向強度を強くする
ことにより結晶内の滑り強度が増し、はく離強度が上が
り、耐摩耗性が向上する。In addition, by increasing the crystal orientation strength of the (200) plane of CrN in the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method obtained by the X-ray diffraction test, slipping in the crystal can be achieved. Strength is increased, peel strength is increased, and wear resistance is improved.
【００２２】また、ＰＶＤ法によって形成されたクロム
（Ｃｒ）と窒素（Ｎ）の化合物層で結晶構造が立方晶の
格子定数ａの大きさを規定することにより格子内のひず
みが大きくなることにより硬度が高くなり、耐摩耗性が
向上する。The crystal structure of the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method defines the cubic lattice constant a, thereby increasing the strain in the lattice. Hardness is increased and wear resistance is improved.
【００２３】また、さらに六方晶と混合することにより
単位格子内の原子数が増加し面密度が大きくなり耐摩耗
性が向上する。Further, by mixing with a hexagonal crystal, the number of atoms in the unit cell is increased, the areal density is increased, and the wear resistance is improved.
【００２４】[0024]
【実施例】以下本発明によるＰＶＤ法によって形成され
たクロム（Ｃｒ）と窒素（Ｎ）の化合物層について図１
を参照しながら説明する。ＰＶＤ法による化合物層は図
２及び図３のベーン１４の表面に実施して行った。摺動
相手のローラー１３には合金鋳鉄材を用いた。EXAMPLES The following information on the compound layer of chromium formed by a PVD method according to the invention (Cr) and nitrogen (N) Figure 1
This will be described with reference to FIG. The compound layer by the PVD method was applied to the surface of the vane 14 shown in FIGS. 2 and 3. An alloy cast iron material was used for the roller 13 to be slid.
【００２５】図１は本発明によるＰＶＤ法によって形成
されたクロム（Ｃｒ）と窒素（Ｎ）の化合物層の組成と
耐摩耗性の関係を整理したものである。FIG. 1 shows the relationship between the composition of the chromium (Cr) and nitrogen (N) compound layers formed by the PVD method according to the present invention and the wear resistance.
【００２６】図１の単独組成であるＣｒＮ結晶単独層と
Ｃｒ2Ｎ結晶単独層の相対比較の摩耗率を比べると明か
にＣｒ2Ｎ結晶単独層の方が耐摩耗性が無いといえる。
従ってＰＶＤ法によって形成されたクロム（Ｃｒ）と
窒素（Ｎ）の化合物層の組成をＣｒＮ結晶単独層にする
ことにより耐摩耗性を向上できる。When the relative wear rates of the CrN single crystal layer and the Cr 2 N single crystal layer having the single composition of FIG. 1 are compared, it can be clearly seen that the Cr 2 N single crystal layer has less wear resistance.
Therefore, the wear resistance can be improved by changing the composition of the chromium (Cr) and nitrogen (N) compound layer formed by the PVD method to a single layer of the CrN crystal.
【００２７】次に本発明によるＰＶＤ法によって形成さ
れたクロム（Ｃｒ）と窒素（Ｎ）の化合物層の第一の実
施例について図４、図５を参照しながら説明する。ＰＶ
Ｄ法による化合物層は図２及び図３のベーン１４の表面
に実施して行った。摺動相手のローラー１３には合金鋳
鉄材を用いた。Next, a first embodiment of a compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method according to the present invention will be described with reference to FIGS. PV
The compound layer by the method D was applied to the surface of the vane 14 shown in FIGS. 2 and 3. An alloy cast iron material was used for the roller 13 to be slid.
【００２８】図４は本発明によるＰＶＤ法によって形成
されたクロム（Ｃｒ）と窒素（Ｎ）の化合物層のＣｒＮ
の最大結晶配向強度に対するＣｒ2Ｎの最大結晶配向強
度の比率と耐摩耗性の関係を整理したものであり、図５
はＣｒＮ結晶構造及びＣｒ2Ｎ結晶構造における結晶配
向強度の総和に対するＣｒＮ結晶構造のミラー指数（２
００）面の結晶配向強度の比率と耐摩耗性の関係を整理
したものである。FIG. 4 shows CrN of a compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method according to the present invention.
FIG. 5 summarizes the relationship between the ratio of the maximum crystal orientation strength of Cr 2 N to the maximum crystal orientation strength and the wear resistance.
Is the Miller index (2) of the CrN crystal structure with respect to the sum of the crystal orientation strengths in the CrN crystal structure and the Cr 2 N crystal structure.
It is a summary of the relationship between the ratio of the crystal orientation strength of the (00) plane and the wear resistance.
【００２９】図４のＣｒＮの最大結晶配向強度に対する
Ｃｒ2Ｎの最大結晶配向強度の比率が８０％以下のもの
と１００％以上のものを比べると明かに８０％以下のも
のの方が耐摩耗性が良好であることより、ＣｒＮの最大
結晶配向強度に対するＣｒ2Ｎの最大結晶配向強度の比
率を８０％以下にすることにより耐摩耗性を向上でき
る。When the ratio of the maximum crystal orientation strength of Cr 2 N to the maximum crystal orientation strength of CrN shown in FIG. 4 is 80% or less and that of 100% or more, those having a maximum crystal orientation strength of 80% or less are clearly wear-resistant. Is good, the wear resistance can be improved by setting the ratio of the maximum crystal orientation strength of Cr 2 N to the maximum crystal orientation strength of CrN to 80% or less.
【００３０】また、ＣｒＮ結晶構造のミラー指数（２０
０）面の結晶配向強度を強くすることにより結晶内の滑
り強度が増しはく離強度を上げ、耐摩耗性を向上させる
ことができ、図５のＣｒＮ結晶構造及びＣｒ2Ｎ結晶構
造における結晶配向強度の総和に対するＣｒＮ結晶構造
のミラー指数（２００）面の結晶配向強度の比率が３０
％以上のものと２５％以下のものを比べると明かに３０
％以上のものの方が耐摩耗性が良好であることより、Ｃ
ｒＮ結晶構造及びＣｒ2Ｎ結晶構造における結晶配向強
度の総和に対するＣｒＮ結晶構造のミラー指数（２０
０）面の結晶配向強度の比率を３０％以上にすることに
より耐摩耗性を向上できる。Further, the Miller index of the CrN crystal structure (20
By increasing the crystal orientation strength of the 0) plane, the slip strength in the crystal is increased, the peel strength is increased, and the wear resistance can be improved. The crystal orientation strength in the CrN crystal structure and the Cr 2 N crystal structure in FIG. The ratio of the crystal orientation strength of the Miller index (200) plane of the CrN crystal structure to the sum of
30% is clearly 30% or more compared to 25% or less.
% Or more has better abrasion resistance.
Miller index (20) of the CrN crystal structure to the sum of the crystal orientation strengths in the rN crystal structure and the Cr 2 N crystal structure
The wear resistance can be improved by setting the ratio of the crystal orientation strength of the 0) plane to 30% or more.
【００３１】以上のように本発明によるＰＶＤ法によっ
て形成されたクロム（Ｃｒ）と窒素（Ｎ）の化合物層は
ＣｒＮの最大結晶配向強度に対するＣｒ2Ｎの最大結晶
配向強度の比率が８０％以下であるので、耐摩耗性が向
上する。As described above, in the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method according to the present invention, the ratio of the maximum crystal orientation intensity of Cr 2 N to the maximum crystal orientation intensity of CrN is 80% or less. Therefore, the wear resistance is improved.
【００３２】また、ＣｒＮ結晶構造及びＣｒ2Ｎ結晶構
造における結晶配向強度の総和に対するＣｒＮ結晶構造
のミラー指数（２００）面の結晶配向強度の比率が３０
％以上であるので、耐摩耗性が向上する。Further, the ratio of the crystal orientation intensity on the Miller index (200) plane of the CrN crystal structure to the total crystal orientation intensity in the CrN crystal structure and the Cr 2 N crystal structure is 30.
% Or more, the wear resistance is improved.
【００３３】次に本発明によるＰＶＤ法によって形成さ
れたクロム（Ｃｒ）と窒素（Ｎ）の化合物層の第三の実
施例について図６を参照しながら説明する。ＰＶＤ法に
よる化合物層は図２及び図３のベーン１４の表面に実施
して行った。摺動相手のローラー１３には合金鋳鉄材を
用いた。Next, a third embodiment of the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method according to the present invention will be described with reference to FIG. The compound layer by the PVD method was applied to the surface of the vane 14 shown in FIGS. 2 and 3. An alloy cast iron material was used for the roller 13 to be slid.
【００３４】図６は本発明によるＰＶＤ法によって形成
されたクロム（Ｃｒ）と窒素（Ｎ）の化合物層の立方晶
の格子定数ａと耐摩耗性の関係を整理したものである。FIG. 6 summarizes the relationship between the cubic lattice constant a of the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method according to the present invention and the wear resistance.
【００３５】一般にクロム（Ｃｒ）と窒素（Ｎ）の化合
物における立方晶の単結晶の格子定数は０．４１３〜
０．４１５ｎｍである。図４の立方晶の格子定数ａが
０．４１６ｎｍ以上のものと０．４１６ｎｍ以下のもの
を比べると明かに０．４１６ｎｍ以上のものの方が耐摩
耗性が良好であることよりＰＶＤ法によって形成された
クロム（Ｃｒ）と窒素（Ｎ）の化合物層において立方晶
の格子定数を０．４１６ｎｍ以上にすることにより格子
内にひずみが生じ、化合物層の硬度を上げ、耐摩耗性を
向上できる。In general, the lattice constant of a cubic single crystal of a compound of chromium (Cr) and nitrogen (N) is 0.413 to 0.413.
0.415 nm. When the lattice constant a of the cubic crystal shown in FIG. 4 is 0.416 nm or more and 0.416 nm or less, the one having a lattice constant of 0.416 nm or more is clearly formed by the PVD method because the abrasion resistance is better. By setting the cubic lattice constant of the compound layer of chromium (Cr) and nitrogen (N) to 0.416 nm or more, strain occurs in the lattice, the hardness of the compound layer is increased, and the wear resistance can be improved.
【００３６】また、立方晶と六方晶の結晶構造を混合す
ることにより単位格子内の原子数が増加し面密度が上が
ると共に、六方晶内の原子が立方晶内に入り込み立方晶
の格子定数ａが０．４１６ｎｍ以上となりとなり耐摩耗
性を向上できる。Further, by mixing the cubic and hexagonal crystal structures, the number of atoms in the unit cell is increased and the areal density is increased, and the atoms in the hexagonal crystal enter the cubic crystal, and the cubic lattice constant a Becomes 0.416 nm or more, and the wear resistance can be improved.
【００３７】以上のように本発明によるＰＶＤ法によっ
て形成されたクロム（Ｃｒ）と窒素（Ｎ）の化合物層は
立方晶の格子定数ａが０．４１６ｎｍ以上であるので、
耐摩耗性が向上する。As described above, since the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method according to the present invention has a cubic lattice constant a of 0.416 nm or more,
The wear resistance is improved.
【００３８】また、六方晶結晶構造との混合構造である
ので耐摩耗性が向上する。Further, since it has a mixed structure with the hexagonal crystal structure, the abrasion resistance is improved.
【００３９】[0039]
【発明の効果】以上説明したように本発明は、Ｘ線回折
試験により求めたＰＶＤ法によって形成されたクロム
（Ｃｒ）と窒素（Ｎ）の化合物層のＣｒＮの最大結晶配
向強度に対するＣｒ2Ｎの最大結晶配向強度の比率を制
限することにより耐摩耗性を向上させる。As described above, according to the present invention, X-ray diffraction
The wear resistance is improved by limiting the ratio of the maximum crystal orientation strength of Cr 2 N to the maximum crystal orientation strength of CrN in the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method obtained by the test. Let it.
【００４０】また、Ｘ線回折試験により求めたＰＶＤ法
によって形成されたクロム（Ｃｒ）と窒素（Ｎ）の化合
物層内のＣｒＮの（２００）面の結晶配向強度を強くす
ることにより結晶内の滑り強度が増しはく離強度を上
げ、耐摩耗性を向上させる。Further, by increasing the crystal orientation strength of the (200) plane of CrN in the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method obtained by the X-ray diffraction test, Increases sliding strength, increases peeling strength and improves wear resistance.
【００４１】また、ＰＶＤ法によって形成されたクロム
（Ｃｒ）と窒素（Ｎ）の化合物層内で結晶構造が立方晶
の格子定数ａの大きさを規定することにより格子内のひ
ずみを大きくし硬度を高くすることにより耐摩耗性を向
上させる。Further, in the compound layer of chromium (Cr) and nitrogen (N) formed by the PVD method, the crystal structure defines the size of the cubic lattice constant a, thereby increasing the strain in the lattice and increasing the hardness. To increase the wear resistance.
【００４２】また、さらに六方晶と混合することにより
単位格子内の原子数が増加し面密度が大きくなり耐摩耗
性を向上させ、信頼性を確実なものにさせる。Further, by mixing with a hexagonal crystal, the number of atoms in the unit cell is increased, the areal density is increased, the abrasion resistance is improved, and the reliability is ensured.
【図１】本発明の化合物層の組成と耐摩耗性の関係を示
す特性図FIG. 1 is a characteristic diagram showing the relationship between the composition of a compound layer of the present invention and wear resistance.
【図２】一般的な回転式圧縮機の縦断面図FIG. 2 is a longitudinal sectional view of a general rotary compressor.
【図３】図１の一般的な圧縮機構の要部断面図FIG. 3 is a sectional view of a main part of the general compression mechanism of FIG. 1;
【図４】本発明の化合物層のＣｒＮの最大結晶配向強度
に対するＣｒ2Ｎの最大結晶配向強度の比率と耐摩耗性
の関係を示す特性図FIG. 4 is a characteristic diagram showing the relationship between the ratio of the maximum crystal orientation intensity of Cr2N to the maximum crystal orientation intensity of CrN in the compound layer of the present invention and the wear resistance.
【図５】本発明のＣｒＮ結晶構造及びＣｒ2Ｎ結晶構造
における結晶配向強度の総和に対するＣｒＮ結晶構造の
ミラー指数（２００）面の結晶配向強度の比率と耐摩耗
性の関係を示す特性図FIG. 5 is a characteristic diagram showing the relationship between the ratio of the crystal orientation strength of the Miller index (200) plane of the CrN crystal structure to the sum of the crystal orientation strengths in the CrN crystal structure and the Cr 2 N crystal structure of the present invention and wear resistance.
【図６】本発明の化合物層の立方晶の格子定数ａと耐摩
耗性の関係を示すグラフFIG. 6 is a graph showing the relationship between the cubic lattice constant a of the compound layer of the present invention and abrasion resistance.
１３ ローラー １４ ベーン 13 rollers 14 vanes
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−18357（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F04B 39/00 F04C 29/00 ────────────────────────────────────────────────── (5) References JP-A-5-18357 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F04B 39/00 F04C 29/00
Claims (4)
と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物の結晶がＣｒＮとＣｒ2Ｎの混合結晶系でＸ線
回折試験によるＣｒＮの最大結晶配向強度に対するＣｒ
2Ｎの最大結晶配向強度の比率が８０％以下の混合結晶
構造である化合物層を表面に有する鉄系材料から成るこ
とを特徴とした回転式圧縮機。1. A hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a closed container, wherein one of sliding materials in the compression mechanism is cast iron, iron-based sintered material, or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
Is a mixed crystal system of CrN and Cr 2 N in the crystal of the compound of
Rotary compressor is characterized in that an iron-based material the ratio of the maximum crystal orientation intensity of 2 N has a compound layer which is a mixed crystal structure of 80% or less on the surface.
と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物の結晶がＣｒＮとＣｒ2Ｎの混合結晶系でＸ線
回折試験によるＣｒＮ結晶構造のミラー指数（２００）
面の結晶配向強度がＣｒＮ結晶構造及びＣｒ２Ｎ結晶構
造における結晶配向強度の総和の３０％以上である化合
物層を表面に有する鉄系材料から成ることを特徴とした
回転式圧縮機。2. A hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a closed container, wherein one of sliding materials in the compression mechanism is cast iron, iron-based sintered material, or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
Is a mixed crystal system of CrN and Cr 2 N, and a Miller index (200) of the CrN crystal structure by an X-ray diffraction test.
A rotary compressor comprising a ferrous material having on its surface a compound layer whose surface has a crystal orientation strength of 30% or more of the sum of the crystal orientation strengths in the CrN crystal structure and the Cr 2 N crystal structure.
と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物の結晶構造が立方晶単独であり、その格子定数
ａが０．４１６ｎｍ以上である化合物層を表面に有する
鉄系材料から成ることを特徴とした回転式圧縮機。3. A hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a closed container, wherein one of sliding materials in the compression mechanism is cast iron, iron-based sintered material, or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
A rotary compressor characterized in that the compound has a crystal structure of a cubic crystal alone and is made of an iron-based material having on its surface a compound layer having a lattice constant a of 0.416 nm or more.
と、冷凍機油とを内装した密閉型回転式圧縮機におい
て、前記圧縮機構における摺動材料の一方が鋳鉄、鉄系
燒結材料またはアルミニウム複合材料から成り、他方が
ＰＶＤ法により形成されたクロム（Ｃｒ）と窒素（Ｎ）
の化合物で格子定数ａが０．４１６ｎｍ以上の立方晶と
六方晶の混合結晶構造である化合物層を表面に有する鉄
系材料から成ることを特徴とした回転式圧縮機。4. A hermetic rotary compressor in which a compression mechanism, a refrigerant, and refrigerating machine oil are housed in a closed container, wherein one of sliding materials in the compression mechanism is cast iron, iron-based sintered material, or aluminum. Chromium (Cr) and Nitrogen (N) made of a composite material, the other formed by PVD method
A rotary compressor having a compound layer having a mixed crystal structure of a cubic crystal and a hexagonal crystal having a lattice constant a of 0.416 nm or more and having a lattice constant a of 0.416 nm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08385595A JP3190541B2 (en) | 1995-04-10 | 1995-04-10 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08385595A JP3190541B2 (en) | 1995-04-10 | 1995-04-10 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08284825A JPH08284825A (en) | 1996-10-29 |
| JP3190541B2 true JP3190541B2 (en) | 2001-07-23 |
Family
ID=13814312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08385595A Expired - Fee Related JP3190541B2 (en) | 1995-04-10 | 1995-04-10 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3190541B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100517A (en) * | 2005-09-30 | 2007-04-19 | Mitsubishi Electric Corp | Hermetic compressor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11351174A (en) * | 1998-06-09 | 1999-12-21 | Matsushita Electric Ind Co Ltd | Rotary compressor |
| US7905715B2 (en) | 2003-06-17 | 2011-03-15 | Panasonic Corporation | Scroll compressor having a fixed scroll part and an orbiting scroll part |
-
1995
- 1995-04-10 JP JP08385595A patent/JP3190541B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100517A (en) * | 2005-09-30 | 2007-04-19 | Mitsubishi Electric Corp | Hermetic compressor |
| JP4616140B2 (en) * | 2005-09-30 | 2011-01-19 | 三菱電機株式会社 | Hermetic compressor and water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08284825A (en) | 1996-10-29 |
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