JPH01384A - rotary compressor - Google Patents
rotary compressorInfo
- Publication number
- JPH01384A JPH01384A JP62-154737A JP15473787A JPH01384A JP H01384 A JPH01384 A JP H01384A JP 15473787 A JP15473787 A JP 15473787A JP H01384 A JPH01384 A JP H01384A
- Authority
- JP
- Japan
- Prior art keywords
- rotary compressor
- roller
- vane
- bearing
- sintered alloy
- 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.)
- Pending
Links
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 8
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ロータリーコンプレッサに係り、特にベーン
及びローラの材質に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to rotary compressors, and more particularly to the materials of vanes and rollers.
従来の技術
近年、エアコン用、冷蔵庫用ロータリーコンプレッサは
ますます高速、高出力コンプレッサが要求され、使用条
件は、極めて荷酷な条件が要求されており、これに使用
するローラやベーンは、高硬度で、耐摩耗性の優れた材
料を使用しなければならず、又、ロータリーコンプレッ
サの信頼性及び性能を向上させるため、各部品とも高度
な寸法精度を要求され、各部品間も厳密なりリアランス
を要求されている。Conventional technology In recent years, rotary compressors for air conditioners and refrigerators are increasingly required to have high speed and high output compressors, and are required to be used under extremely harsh conditions. Therefore, it is necessary to use materials with excellent wear resistance, and in order to improve the reliability and performance of the rotary compressor, a high degree of dimensional accuracy is required for each part, and strict tolerances must be maintained between each part. requested.
以下、図面を参照しながら従来のロータリーコンプレッ
サの一例について説明する。An example of a conventional rotary compressor will be described below with reference to the drawings.
第３図は、従来のロータリーコンプレッサの横断面図を
、第４図は、同じく縦断面を示す。１はロータリーコン
プレッサである。２はシャフト、３はローラ、４はシリ
ンダ、６はベーンである。FIG. 3 is a cross-sectional view of a conventional rotary compressor, and FIG. 4 is a longitudinal cross-sectional view of the same. 1 is a rotary compressor. 2 is a shaft, 3 is a roller, 4 is a cylinder, and 6 is a vane.
又、６は主軸受、７は副軸受である。シャフト２にロー
２３が偏心して組立てられておシ、ローラ３がシリンダ
４の内壁と密接しながら、かつベーン６の先端曲率部と
摺動しながら回転するものでローラ３の動きに対応して
、ベーン５はシリンダ４の一部に設けられた溝を、出入
シする往復運動を行う動きを示すものである。又、ロー
ラ３、ベーン５ば、主軸受６、副軸受７により、適度な
りリアランスを保ち、両側から保持されている。又、各
々の摺動部品材料としては、近年のロータリーコンプレ
ッサの高速、高出力化にともなう摺動条件の苛酷さから
、優れた耐摩耗性が要求され、特に苛酷とされるベーン
５には、軸受鋼、高速度工具鋼等の高合金鋼を焼入れ、
焼戻し処理を行ったもの、すなわち、硬度が高く、耐摩
耗性の優れた金属材料を使用していた。又、ベーン５の
先端曲率部と、摺動するローラ３も、それに応じて鋳鉄
、高合金鋼を焼入た、焼戻し処理を行ったものを使用し
、ロータリーコンプレッサの信頼性を確保していた。Further, 6 is a main bearing, and 7 is a sub-bearing. The roller 23 is eccentrically assembled to the shaft 2, and the roller 3 rotates while being in close contact with the inner wall of the cylinder 4 and sliding on the curvature of the tip of the vane 6, corresponding to the movement of the roller 3. The vane 5 moves in and out of a groove provided in a part of the cylinder 4 in a reciprocating motion. Further, the roller 3, the vane 5, the main bearing 6, and the sub-bearing 7 maintain a certain amount of clearance and are held from both sides. In addition, the materials for each sliding part are required to have excellent wear resistance due to the harsher sliding conditions associated with the higher speeds and higher outputs of rotary compressors in recent years. Hardening high alloy steel such as bearing steel and high speed tool steel,
A metal material that has been tempered, that is, has high hardness and excellent wear resistance, was used. In addition, the tip curvature of the vane 5 and the sliding roller 3 are made of cast iron or high alloy steel that has been quenched or tempered accordingly to ensure the reliability of the rotary compressor. .
発明が解決しようとする問題点
しかしながら、上記のような構成では、ベーン５、及び
ローラ３が、時間の経過に伴ない膨張する現象が生じる
。すなわち、高合金鋼の焼入れ時に生じた残留オーステ
ナイトが、時間の経過に伴ない徐々にマルテンサイト変
態を続け、膨張する。Problems to be Solved by the Invention However, in the above configuration, a phenomenon occurs in which the vanes 5 and rollers 3 expand over time. That is, residual austenite generated during quenching of high alloy steel gradually continues to undergo martensitic transformation and expands over time.
従って、当初は、主軸受６、副軸受７と、適度なりリア
ランスを保って組立てられていたローラ３、及びベーン
５が膨張することによシ、前記クリアランスが小さくな
シ、場合によっては、主軸受６、副軸受７と、ローラ３
又はベーン６が直接接触し、脱付を生じることがある。Therefore, due to the expansion of the rollers 3 and the vanes 5, which were initially assembled with the main bearing 6 and the sub-bearing 7 while maintaining a certain clearance, the main bearing 6 and the sub-bearing 7 may be damaged due to the expansion of the vanes 5. Bearing 6, secondary bearing 7, and roller 3
Alternatively, the vane 6 may come into direct contact and may come off.
そのため、ローラ３、ベーン５の膨張を予測して、主軸
受６、副軸受７とローラ３、ベーン５のクリアランスを
予め大きく取って組み立てる必要があった。しかし、そ
の４合シリンダ４内の高圧縮ガスが、クリアランスから
洩れる量が多くなシ、ロータリーコンプレッサとしての
効率が低下するという問題があった。Therefore, it was necessary to predict the expansion of the rollers 3 and vanes 5 and to provide a large clearance between the main bearing 6 and the sub-bearing 7 and the rollers 3 and vanes 5 before assembly. However, there was a problem in that a large amount of highly compressed gas in the four-way cylinder 4 leaked from the clearance, and the efficiency of the rotary compressor was reduced.
又、焼入、焼戻し処理を行なうことなく、焼入、焼戻し
処理を行なった高合金銅皿みの耐摩耗性を有する材料と
して、セラミックスが考えられるが、ロータリーコンプ
レッサの摺動部品に要求される扁糟度の加工が困姥であ
ること、及び金属よシもろく、特にエツジ部に欠は等の
欠陥力；生じやすい等の問題があった。いずれにしても
、信頼性、性能共満足するロータリーコンプレッサとし
ては、不十分であった。In addition, ceramics can be considered as a wear-resistant material for high-alloy copper countersinks that have been hardened and tempered without being hardened and tempered, but they are required for the sliding parts of rotary compressors. There are problems in that it is difficult to process the flatness, and that it is more brittle than metal, and is particularly prone to defects such as cracks at the edges. In any case, the rotary compressor was insufficient to satisfy both reliability and performance.
本発明は、上記問題点に鑑み、ロータリーコンプレッサ
の高速化、高出力化に対し、ベーン及びローラの耐摩耗
性を保持するとともに、加工性に優れ、又寸法変化の少
ない材料にて構成し、信頼性、性能とも優れたロータリ
ーコンプレッサｔｉ供するものである。In view of the above-mentioned problems, the present invention maintains the wear resistance of the vanes and rollers in response to the increase in speed and output of rotary compressors, has excellent workability, and is made of a material with little dimensional change. We provide rotary compressors with excellent reliability and performance.
問題点を解決するための手段
上記問題点を解決するために、本発明のロータリーコン
プレッサは、ベーン、ローラの少なくとも一方を加工性
に優れ、しかも経時的な寸法変化が少なく、又耐摩耗性
に優れた材料である、セラミックス術粉末を均一に分散
した鉄系焼結合金にて構成したものである。Means for Solving the Problems In order to solve the above problems, the rotary compressor of the present invention has at least one of the vanes and rollers that has excellent workability, less dimensional change over time, and wear resistance. It is constructed from an iron-based sintered alloy in which ceramic powder, an excellent material, is uniformly dispersed.
作 用
本発明は、上記した構成によシ焼入焼もどし等の熱処理
を施こすことなくベーン、ローラの耐摩耗性を確保する
ことができ、熱処理の影響で起こる組織及びこれに伴う
寸法の経時変化が防げるものである。従って、主軸受、
副軸受とベーン、ローラのクリアランスを常に適正に保
ちロータリーコンプレッサの性能を向上することができ
る。Effects The present invention can ensure the wear resistance of vanes and rollers without performing heat treatment such as quenching and tempering due to the above-described structure, and it is possible to ensure the wear resistance of the vanes and rollers without performing heat treatment such as quenching and tempering. This prevents changes over time. Therefore, the main bearing,
The performance of the rotary compressor can be improved by always maintaining the appropriate clearance between the secondary bearing, vane, and roller.
実施例
以下本発明の一実施例について図面を参照しながら説明
する。第１図は本発明の一実施例によるロータリーコン
プレッサの横断面を、第２図は同じく縦断面を示す。１
はロータリーコンプレッサである。２はシャフト、８は
ローラ、４はシリンダ、９はベーンである。又、６は主
軸受、７は副軸受である。尚、ローラ８．ベーン９は炭
化硅素を分散した焼結合金で作成した。シャフト２にロ
ー２８が偏心して組立てられておシ、ローラ８がシリン
ダ４の内壁と密接しながら、かつベーン９の先端曲率部
と摺動しながら回転するもので、ロー２８の動きに対応
して、ベーン９はシリンダ４のベーン溝を出入シする往
復運動を行うものである。又ローラ８、ベーン９は主軸
受６、副軸受７によシ適度なりリアランスを保ち、両側
から保持されている。EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross section of a rotary compressor according to an embodiment of the present invention, and FIG. 2 shows a longitudinal section thereof. 1
is a rotary compressor. 2 is a shaft, 8 is a roller, 4 is a cylinder, and 9 is a vane. Further, 6 is a main bearing, and 7 is a sub bearing. In addition, roller 8. Vane 9 was made of a sintered alloy in which silicon carbide was dispersed. The row 28 is eccentrically assembled on the shaft 2, and the roller 8 rotates while being in close contact with the inner wall of the cylinder 4 and sliding on the curvature of the tip of the vane 9, and corresponds to the movement of the row 28. The vane 9 reciprocates in and out of the vane groove of the cylinder 4. Further, the rollers 8 and the vanes 9 are held from both sides by the main bearing 6 and the sub-bearing 7 to maintain a certain amount of clearance.
本実施例のローラ８、ベーン９に用いた材料は、平均粒
径１μｍの炭化硅素を３ｗｔ％分散した焼結合金で、銅
１ｗｔ％、炭素０．３ｗｔ％、その他不純物０．１ｗｔ
％以下を含む鉄系燃結合金をマトリックスとした。マト
リックスである焼結合金は、線膨張係数をシャフト２、
シリンダ４の材料である鋳鉄に一致させるために鉄系の
焼結合金を選択した。The material used for the roller 8 and vane 9 in this example is a sintered alloy in which 3 wt% silicon carbide with an average particle size of 1 μm is dispersed, 1 wt% copper, 0.3 wt% carbon, and 0.1 wt% other impurities.
% or less was used as the matrix. The sintered alloy that is the matrix has a coefficient of linear expansion of shaft 2,
A ferrous sintered alloy was selected to match the cast iron that is the material of the cylinder 4.
これは、温度変化による各部クリアランスの変化を極力
抑えるためである。又、焼結合金に含有するセラミック
粉末は、耐摩耗性と加工性の点より上記のものを選択し
た。粒径を大きくする程、又含有量を多くする程耐摩耗
性は向上するが、仕上後の面粗度が悪くなるため加工に
時間を要する。This is to suppress changes in the clearances of each part due to temperature changes as much as possible. Further, the ceramic powder contained in the sintered alloy was selected from the above-mentioned ones from the viewpoint of wear resistance and workability. The larger the particle size or the higher the content, the better the wear resistance, but the surface roughness after finishing worsens, so it takes more time to process.
従って最適値は、粒径０．１〜３μｍ、含有量０．１〜
１０ｗｔ％である。炭化硅素以外のセラミックへ例えば
窒化硅素、ジルコニア）を用いても同等の特性が得られ
るが、本実施例では、最も耐摩耗性に優れた炭化硅素を
選択した。Therefore, the optimum values are a particle size of 0.1 to 3 μm and a content of 0.1 to 3 μm.
It is 10wt%. Although similar characteristics can be obtained by using ceramics other than silicon carbide, such as silicon nitride or zirconia, in this example, silicon carbide, which has the best wear resistance, was selected.
本実施例の冷蔵庫用４ＣＣロータリーコンプレツサにお
いて、ローラ８、ベーン９と主軸受６、副軸受７の間の
クリアランスを従来比％とすることにより、シリンダ４
内の高圧縮ガスの洩れを減少させ約２チの能力が向上し
た。In the 4CC rotary compressor for refrigerators of this embodiment, the clearance between the roller 8, vane 9, main bearing 6, and sub-bearing 7 is made % compared to the conventional one, so that the cylinder 4
The leakage of highly compressed gas inside the tank has been reduced and the capacity has been improved by about 2 inches.
一方、本実施例の焼結合金が時間経過に伴う寸法変化が
従来に比べて少ないことを確認するため以下の実験を行
った。供試品として、本実施例に用いた炭化硅素分散型
焼結合金と従来例である焼入れ焼戻し処理を行った鋳物
（Ｆｅ１２）を各５個届意し、約３週間１５０’Ｃの熱
風乾燥炉中に保持しその間の寸法変化を測定した。従来
例である鋳物は平均で約６μｍ／１０ｍｍ膨張したが、
本実施例の炭化硅素分散型焼結合金では寸法変化量が１
μ号′１０、以下でほとんど変化が認められなかった。On the other hand, the following experiment was conducted to confirm that the sintered alloy of this example exhibits less dimensional change over time than conventional ones. As test products, we delivered five pieces each of the silicon carbide dispersed sintered alloy used in this example and the conventional casting (Fe12) that had been quenched and tempered, and dried them with hot air at 150'C for about three weeks. It was kept in a furnace and the dimensional changes during that time were measured. Conventional castings expanded by an average of about 6 μm/10 mm, but
In the silicon carbide dispersed sintered alloy of this example, the dimensional change is 1
Almost no change was observed in μ No.'10 and below.
従って本実施例によれば、ロータリーコンプレッサのロ
ーラ８、ベーン９を炭化硅素を分散した鉄系焼結合金に
て構成することによシ経時寸法変化を抑えることができ
、主軸受６、副軸受７とのクリアランスを従来より小さ
くすることによりコンプレッサ能力を向上することがで
きる。Therefore, according to this embodiment, by constructing the rollers 8 and vanes 9 of the rotary compressor from an iron-based sintered alloy in which silicon carbide is dispersed, dimensional changes over time can be suppressed, and the main bearing 6 and sub-bearing By making the clearance with 7 smaller than before, the compressor capacity can be improved.
発明の効果
以上のように本発明は、ローラ、ベーンをセラミックス
粉末を均一に分散した鉄系焼結合金にて構成することに
よりロータリーコンプレッサの性能を向上させることが
できる。Effects of the Invention As described above, the present invention can improve the performance of a rotary compressor by constructing the rollers and vanes from an iron-based sintered alloy in which ceramic powder is uniformly dispersed.
第１図は本発明の一実施例によるロータリーコンプレッ
サの横断面図、第２図は同縦断面図、第３図は従来例に
よるロータリーコンプレッサの横断面図、第４図は同縦
断面図である。
４・・・・・・シリンダ、８・・・・・・ローラ、９・
・・・・・ベーン。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名４−
−−シリンダ
第２図Fig. 1 is a cross-sectional view of a rotary compressor according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view thereof, Fig. 3 is a cross-sectional view of a rotary compressor according to a conventional example, and Fig. 4 is a longitudinal cross-sectional view thereof. be. 4...Cylinder, 8...Roller, 9.
...Bane. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
--Cylinder diagram 2
Claims (2)
るベーンと、ローラ及びベーンを収納しているシリンダ
からなり、前記ベーン及びローラの少なくとも一方を、
セラミックス微粉末を均一に分散した鉄系焼結合金で構
成したことを特徴とするロータリーコンプレッサ。(1) Consisting of a rotating roller, a vane in pressure contact with the outer periphery of the roller, and a cylinder housing the roller and vane, at least one of the vane and the roller,
A rotary compressor characterized by being constructed of an iron-based sintered alloy in which fine ceramic powder is uniformly dispersed.
１０ｗｔ％とし、前記セラミックスを粒径０．１〜３μ
ｍの炭化硅素とした特許請求の範囲第１項記載のロータ
リーコンプレッサ。(2) Ceramic content in the sintered alloy is 0.1~
10wt%, and the ceramic has a particle size of 0.1 to 3μ.
2. The rotary compressor according to claim 1, wherein silicon carbide is made of silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-154737A JPH01384A (en) | 1987-06-22 | rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-154737A JPH01384A (en) | 1987-06-22 | rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS64384A JPS64384A (en) | 1989-01-05 |
| JPH01384A true JPH01384A (en) | 1989-01-05 |
Family
ID=
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