JPH06128666A - Powdery composite material for scroll - Google Patents
Powdery composite material for scrollInfo
- Publication number
- JPH06128666A JPH06128666A JP27723992A JP27723992A JPH06128666A JP H06128666 A JPH06128666 A JP H06128666A JP 27723992 A JP27723992 A JP 27723992A JP 27723992 A JP27723992 A JP 27723992A JP H06128666 A JPH06128666 A JP H06128666A
- Authority
- JP
- Japan
- Prior art keywords
- scroll
- powder
- composite material
- reinforcing material
- whiskers
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本願発明は、スクロール圧縮機の
スクロール用材料として使用される粉末複合材料に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder composite material used as a scroll material for a scroll compressor.
【０００２】[0002]
【従来の技術】従来より、例えば空調機において冷媒圧
縮用に使用される圧縮機の一つとしてスクロール圧縮機
が知られている。このスクロール圧縮機は、図１及び図
２に示すように、渦巻状の羽根１５を備え且つケーシン
グ１側に固定される固定スクロール５と、同じく渦巻状
の羽根１６を備えた可動スクロール６とを、該各羽根１
５,１６を相互に噛合させた状態で対向配置し、上記可
動スクロール６を上記固定スクロール５の中心Ｇの回り
で公転させることでこれら各羽根１５,１６の間に形成
される各作動室７,７,・・が順次容積を減少させながら
上記中心Ｇ側に向って移動し、これにより所要の圧縮作
用を行うようになっている。そして、従来一般に上記各
スクロール５,６はこれをねずみ鋳鉄あるいはアルミニ
ウム合金AC8C(下記表１及び表２にその組成を示す)を素
材として鋳造成形するのが通例であった。尚、図１にお
いて符号２はモータ、３は主軸受、４は回転軸、１０は
偏心軸受である。2. Description of the Related Art Conventionally, a scroll compressor has been known as one of compressors used for refrigerant compression in an air conditioner, for example. As shown in FIGS. 1 and 2, this scroll compressor includes a fixed scroll 5 having spiral blades 15 and fixed to the casing 1 side, and a movable scroll 6 also having spiral blades 16. , Each blade 1
When the movable scroll 6 is revolved around the center G of the fixed scroll 5, the working chambers 7 formed between the blades 15 and 16 are arranged so that the movable scroll 6 and the movable scroll 6 face each other. , 7 move to the center G side while gradually decreasing the volume, and thereby perform a required compression action. In general, the scrolls 5 and 6 have conventionally been cast-molded from gray cast iron or aluminum alloy AC8C (compositions of which are shown in Tables 1 and 2 below). In FIG. 1, reference numeral 2 is a motor, 3 is a main bearing, 4 is a rotating shaft, and 10 is an eccentric bearing.
【０００３】[0003]
【表１】 [Table 1]
【０００４】[0004]
【表２】 [Table 2]
【０００５】[0005]
【発明が解決しようとする課題】ところで、このような
スクロール圧縮機においては、固定スクロール５の羽根
１５と可動スクロール６の羽根１６との間の気密性が圧
縮性能に直接的に反映されるものであるため、該各羽根
１５,１６には高度の加工精度が要求される。By the way, in such a scroll compressor, the airtightness between the blades 15 of the fixed scroll 5 and the blades 16 of the movable scroll 6 is directly reflected in the compression performance. Therefore, each of the blades 15 and 16 is required to have a high processing accuracy.
【０００６】しかるに、従来は上述のようにこれをねず
み鋳鉄あるいはアルミニウム合金AC8Cを用いて鋳造成形
していたため、次のような問題があった。[0006] However, conventionally, as described above, this was cast-molded by using gray cast iron or aluminum alloy AC8C, so that there were the following problems.
【０００７】 上掲の現行各材料はその熱膨張係数
が、それぞれ11.0 × 1/106 , 22.0 ×1/106(下記表４
参照)と比較的大きいことから、圧縮性能の確保上から
要求される加工精度(熱膨張量)を十分に達成できない
(図３参照)。[0007] The thermal expansion coefficient of the current each material listed above, respectively 11.0 × 1/10 6, 22.0 × 1 /10 6 ( Table 4
Since it is comparatively large, the processing accuracy (thermal expansion amount) required to secure compression performance cannot be sufficiently achieved.
(See Figure 3).
【０００８】 鋳造材であるため加工精度確保上、鋳
造成形後における加工工数が大きく、コストアップを招
来する要因の一つとなっている。Since it is a cast material, in order to secure the processing accuracy, the number of processing steps after casting and molding is large, which is one of the factors that increase the cost.
【０００９】そこで本願発明は、高度の加工精度が確保
されるとともに、加工工数の低減によりコストダウンを
図り得るようなスクロール用粉末複合材料を提供せんと
してなされたものである。Therefore, the invention of the present application is made to provide a powder composite material for a scroll which ensures a high degree of processing accuracy and can reduce the cost by reducing the number of processing steps.
【００１０】[0010]
【課題を解決するための手段】本願発明ではかかる課題
を解決するための具体的手段として、請求項１記載の発
明にかかるスクロール用粉末複合材料では、鉄を主成分
とする粉末からなるマトリックスと、セラミック粉末ま
たはウィスカーからなる強化材とを混合して焼結するこ
とを特徴としている。As a concrete means for solving such a problem in the present invention, in the powder composite material for a scroll according to the invention described in claim 1, a matrix composed of powder containing iron as a main component is used. , A ceramic powder or a reinforcing material composed of whiskers is mixed and sintered.
【００１１】請求項２記載の発明にかかるスクロール用
粉末複合材料では、請求項１において、上記強化材を、
カーボン、炭化硅素、ホウ酸アルミニウム、アルミナの
粉末またはウィスカーとしたことを特徴としている。According to a second aspect of the present invention, there is provided a powder composite material for a scroll according to the first aspect, wherein the reinforcing material is
It is characterized by being powder of carbon, silicon carbide, aluminum borate, alumina or whiskers.
【００１２】請求項３記載の発明にかかるスクロール用
粉末複合材料では、請求項１において、上記強化材をカ
ーボン粉末とし且つその混合割合を体積率２０％以上と
したことを特徴としている。According to a third aspect of the present invention, there is provided a powder composite material for a scroll according to the first aspect, wherein the reinforcing material is carbon powder and the mixing ratio thereof is 20% or more by volume.
【００１３】請求項４記載の発明にかかるスクロール用
粉末複合材料では、請求項１において、上記マトリック
スを、主成分としての鉄に所定量のクローム、モリブデ
ン、タングステン、ニッケル、硅素を混合して構成し、
また上記強化材をセラミック粉末またはウィスカーとし
且つその混合割合を体積率２０％以上としたことを特徴
としている。According to a fourth aspect of the present invention, there is provided a powder composite material for scrolls according to the first aspect, wherein the matrix is formed by mixing iron as a main component with a predetermined amount of chrome, molybdenum, tungsten, nickel and silicon. Then
The reinforcing material is ceramic powder or whiskers, and the mixing ratio thereof is 20% or more in volume.
【００１４】[0014]
【発明の効果】本願各発明のスクロール用粉末複合材料
によれば、鉄を主成分とするマトリックスとセラミック
粉末等からなる強化材とを混合し且つ焼結してなるもの
であることから、該粉末複合材料によってスクロールを
焼結成形する場合には、例えば従来のように鋳造材によ
ってスクロールを鋳造成形する場合に比して、より製品
形状に近い形状に成形して事後の加工工数を低減させて
より一層のコストダウンを図ることができるという効果
が得られるものである。EFFECTS OF THE INVENTION According to the powder composite material for a scroll of the inventions of the present application, a matrix containing iron as a main component and a reinforcing material such as ceramic powder are mixed and sintered. When a scroll is formed by sintering with a powder composite material, for example, compared with the conventional case where a scroll is cast by using a casting material, the scroll is formed into a shape closer to the product shape, and the number of post-processing steps is reduced. Therefore, the effect that the cost can be further reduced can be obtained.
【００１５】また、マトリックスに強化材を混合して焼
結するものであることから、これによって形成されるス
クロールは、従来のようにねずみ鋳鉄等の金属材の鋳造
により得られるスクロールに比して、熱膨張係数が大幅
に低くその加工精度が格段に向上するため、スクロール
圧縮機においては圧縮作用を行うスクロール部の高水準
の気密性が維持され、延いてはその圧縮性能の向上に寄
与し得るという効果も得られるものである。Further, since the matrix is mixed with the reinforcing material and is sintered, the scroll formed by this is compared with the scroll obtained by casting a metal material such as gray cast iron as in the conventional scroll. Since the coefficient of thermal expansion is significantly low and the processing accuracy is greatly improved, the scroll compressor maintains a high level of airtightness in the scroll section that performs the compression action, which in turn contributes to the improvement of its compression performance. The effect of obtaining is also obtained.
【００１６】[0016]
【実施例】以下、本願発明のスクロール用粉末複合材料
を実施例に基づいて具体的に説明すると、このスクロー
ル用粉末複合材料は、上述したスクロール圧縮機の固定
スクロール５あるいは可動スクロール６を焼結加工によ
り形成するためのものである。従って、このスクロール
用粉末複合材料により焼結成形されるスクロール５,６
には、製品形状により近い形状に形成することで事後の
加工工数の低減が図れるという焼結成形に特有の利点を
有することは勿論であるが、その一方で、圧縮部分にお
ける気密性を保持して高度の圧縮性能を確保するという
観点から、熱膨張係数が小さく温度変化による加工精度
のバラツキが少ないものであることが要求されることは
既述の通りである。EXAMPLES The powder composite material for a scroll of the present invention will be described below in detail with reference to examples. This powder composite material for a scroll sinters the fixed scroll 5 or the movable scroll 6 of the scroll compressor described above. It is for forming by processing. Therefore, the scrolls 5 and 6 which are sinter-molded with this powder composite material for scrolls
Of course has the unique advantage of sinter molding that it is possible to reduce the number of post-processing steps by forming the shape closer to the product shape, but on the other hand, maintaining the airtightness in the compressed part As described above, from the viewpoint of ensuring a high level of compression performance, it is required that the coefficient of thermal expansion be small and the variation in processing accuracy due to temperature changes be small.
【００１７】そこで、この実施例においては、かかる要
求を満足する材料として、本願各発明を適用して、下掲
する表３に示す三つの材料(Ａ〜Ｃ)を提案し、且つこれ
らの熱膨張係数を計測してこれがスクロール用材料とし
て適用できるか否かについて考察した。以下、これを説
明する。Therefore, in this embodiment, three materials (A to C) shown in Table 3 below are proposed by applying the inventions of the present application as materials satisfying such requirements, and the heat of these materials is proposed. The expansion coefficient was measured and it was considered whether it could be applied as a scroll material. This will be described below.
【００１８】[0018]
【表３】 [Table 3]
【００１９】材料Ａは、マトリックスとして、主成分た
る鉄(Fe−５０％)の他にクローム(Cr−５％)とモリブデ
ン(Mo−４％)とタングステン(W−５％)とニッケル(Ni−
１％)と硅素(Si−５％)とを添加した高速度鋼に近い組
成とする一方、強化材としてカーボン粉末を採用し且つ
その混合割合を３０％としたものである。The material A is used as a matrix, in addition to iron (Fe-50%) as a main component, chromium (Cr-5%), molybdenum (Mo-4%), tungsten (W-5%) and nickel (Ni). −
1%) and silicon (Si-5%) are added, the composition is close to that of high-speed steel, while carbon powder is used as a reinforcing material and the mixing ratio is 30%.
【００２０】材料Ｂは、材料Ａと同様の組成において、
鉄の割合を５５％に増加させる一方、カーボン粉末の割
合を２５％に減少させたものである。Material B has the same composition as Material A,
The iron content was increased to 55% while the carbon powder content was reduced to 25%.
【００２１】材料Ｃは、材料Ｂの組成からさらに、鉄の
割合を６０％に増加させる一方、カーボン粉末の割合を
２０％に減少させたものである。The material C is obtained by further increasing the proportion of iron to 60% and decreasing the proportion of carbon powder to 20% from the composition of the material B.
【００２２】このような組成の材料Ａ〜Ｃをプラズマ焼
結装置により焼結させてそれぞれ成形品を得た。そし
て、この各材料Ａ〜Ｃのそれぞれについて熱膨張係数を
測定し、これを表４に示した。Materials A to C having such compositions were sintered by a plasma sintering apparatus to obtain molded products. Then, the coefficient of thermal expansion was measured for each of the materials A to C and is shown in Table 4.
【００２３】[0023]
【表４】 [Table 4]
【００２４】ここで、本発明にかかる上記各材料Ａ〜Ｃ
と、比較材料としてのねずみ鋳鉄及びアルミニウム合金
AC8Cとでそれぞれスクロールを形成した場合における加
工精度(熱膨張量)を比較評価した。Here, each of the above materials A to C according to the present invention.
And gray cast iron and aluminum alloys as comparative materials
The processing accuracy (thermal expansion amount) in the case of forming a scroll with AC8C was comparatively evaluated.
【００２５】例として、２HPのスクロール圧縮機を考え
る。このスクロール圧縮機におけるスクロール直径は約
100mmであり、運転時には低温部と高温部との間において
約80℃の温度差ができる。 この温度差による熱膨張量
を求めると次の通りである。As an example, consider a 2 HP scroll compressor. The scroll diameter of this scroll compressor is about
It is 100 mm, and there is a temperature difference of about 80 ° C. between the low temperature part and the high temperature part during operation. The thermal expansion amount due to this temperature difference is as follows.
【００２６】材料Ａの場合 50 × 103 × 80 × 6.43 × 1/106 = 2.5 μm 材料Ｂの場合 50 × 103 × 80 × 7.10 × 1/106 = 2.8 μm 材料Ｃの場合 50 × 103 × 80 × 7.73 × 1/106 = 3.1 μm ねずみ鋳鉄の場合 50 × 103 × 80 × 11.0 × 1/106 = 4.4 μｍ アルミニウム合金ＡＣ８Ｃの場合 50 × 103 × 80 × 22.0 × 1/106 = 8.8 μm この結果を熱膨張係数と加工精度(膨張量)の関係として
表したものが図３である。一般に、スクロール用材料と
しては膨張量が５μm以下であることが望ましいとされ
ていることから考えて、本発明各材料Ａ〜Ｃはスクロー
ル用材料として十分な加工精度をもつものであると言え
る。尚、ここで、目標とする加工精度を膨張両３μmに
設定した場合、カーボン粉末の体積率が２０％と最も低
い材料Ｃにおいても達成されるものである。In the case of material A 50 × 10 3 × 80 × 6.43 × 1/10 6 = 2.5 μm In the case of material B 50 × 10 3 × 80 × 7.10 × 1/10 6 = 2.8 μm In the case of material C 50 × 10 3 × 80 × 7.73 × 1/10 6 = 3.1 μm Gray cast iron 50 × 10 3 × 80 × 11.0 × 1/10 6 = 4.4 μm Aluminum alloy AC8C 50 × 10 3 × 80 × 22.0 × 1/10 6 = 8.8 μm Figure 3 shows this result as a relationship between the coefficient of thermal expansion and the processing accuracy (expansion amount). In general, it is considered that the expansion amount is preferably 5 μm or less as a scroll material, so that it can be said that each of the materials A to C of the present invention has sufficient processing accuracy as a scroll material. In addition, here, when the target processing accuracy is set to be 3 μm for both expansions, it can be achieved even with the material C having the lowest volume ratio of carbon powder of 20%.
【図１】スクロール圧縮機の要部断面図である。FIG. 1 is a cross-sectional view of a main part of a scroll compressor.
【図２】図１のII-II断面図である。FIG. 2 is a sectional view taken along the line II-II in FIG.
【図３】スクロールの熱膨張係数と加工精度との相関図
である。FIG. 3 is a correlation diagram between a coefficient of thermal expansion of a scroll and processing accuracy.
１はケーシング、２はモータ、３は主軸受、４は回転
軸、５は固定スクロール、６は可動スクロール、７は作
動室、１０は偏心軸受、１５及び１６は羽根である。1 is a casing, 2 is a motor, 3 is a main bearing, 4 is a rotary shaft, 5 is a fixed scroll, 6 is a movable scroll, 7 is a working chamber, 10 is an eccentric bearing, and 15 and 16 are blades.
Claims (4)
クスと、セラミック粉末またはウィスカーからなる強化
材とを混合して焼結することを特徴とするスクロール用
粉末複合材料。1. A powder composite material for a scroll, characterized in that a matrix made of powder containing iron as a main component and a reinforcing material made of ceramic powder or whiskers are mixed and sintered.
ボン、炭化硅素、ホウ酸アルミニウム、アルミナの粉末
またはウィスカーであることを特徴とするスクロール用
粉末複合材料。2. The powder composite material for a scroll according to claim 1, wherein the reinforcing material is carbon, silicon carbide, aluminum borate, alumina powder or whiskers.
ン粉末であり且つその混合割合が体積率２０％以上とさ
れていることを特徴とするスクロール用粉末複合材料。3. The powder composite material for a scroll according to claim 1, wherein the reinforcing material is carbon powder and the mixing ratio thereof is 20% or more by volume.
が、主成分としての鉄に所定量のクローム、モリブデ
ン、タングステン、ニッケル、硅素を混合してなり、ま
た上記強化材がセラミック粉末またはウィスカーであり
且つその混合割合が体積率２０％以上とされていること
を特徴とするスクロール用粉末複合材料。4. The method according to claim 1, wherein the matrix is formed by mixing iron as a main component with a predetermined amount of chrome, molybdenum, tungsten, nickel, and silicon, and the reinforcing material is ceramic powder or whiskers. A powder composite material for a scroll, characterized in that the mixing ratio is 20% or more by volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27723992A JPH06128666A (en) | 1992-10-15 | 1992-10-15 | Powdery composite material for scroll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27723992A JPH06128666A (en) | 1992-10-15 | 1992-10-15 | Powdery composite material for scroll |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06128666A true JPH06128666A (en) | 1994-05-10 |
Family
ID=17580761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27723992A Pending JPH06128666A (en) | 1992-10-15 | 1992-10-15 | Powdery composite material for scroll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06128666A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331395A3 (en) * | 2002-01-24 | 2003-09-10 | Copeland Corporation | Powder metal scrolls |
| US8684711B2 (en) | 2007-01-26 | 2014-04-01 | Emerson Climate Technologies, Inc. | Powder metal scroll hub joint |
| US8955220B2 (en) | 2009-03-11 | 2015-02-17 | Emerson Climate Technologies, Inc. | Powder metal scrolls and sinter-brazing methods for making the same |
-
1992
- 1992-10-15 JP JP27723992A patent/JPH06128666A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331395A3 (en) * | 2002-01-24 | 2003-09-10 | Copeland Corporation | Powder metal scrolls |
| US6705848B2 (en) | 2002-01-24 | 2004-03-16 | Copeland Corporation | Powder metal scrolls |
| EP1500818A2 (en) | 2002-01-24 | 2005-01-26 | Copeland Corporation | Powder metal scroll for a scroll compressor |
| US7086151B2 (en) | 2002-01-24 | 2006-08-08 | Copeland Corporation | Powder metal scrolls |
| EP1500818A3 (en) * | 2002-01-24 | 2008-01-02 | Emerson Climate Technologies, Inc. | Powder metal scroll for a scroll compressor |
| AU2002325600B2 (en) * | 2002-01-24 | 2008-02-21 | Emerson Climate Technologies, Inc. | Powder metal scrolls |
| CN100400204C (en) * | 2002-01-24 | 2008-07-09 | 爱默生气候技术公司 | Powder metal scrolls |
| KR100886111B1 (en) * | 2002-01-24 | 2009-02-27 | 에머슨 클리메이트 테크놀로지즈 인코퍼레이티드 | Powder metal scrolls |
| KR100886112B1 (en) * | 2002-01-24 | 2009-02-27 | 에머슨 클리메이트 테크놀로지즈 인코퍼레이티드 | Powder metal scrolls |
| US7845918B2 (en) | 2002-01-24 | 2010-12-07 | Emerson Climate Technologies, Inc. | Powder metal scrolls |
| EP2282060A3 (en) * | 2002-01-24 | 2013-05-01 | Emerson Climate Technologies, Inc. | Powder metal scrolls |
| US8568117B2 (en) | 2002-01-24 | 2013-10-29 | Emerson Climate Technologies, Inc. | Powder metal scrolls |
| US8684711B2 (en) | 2007-01-26 | 2014-04-01 | Emerson Climate Technologies, Inc. | Powder metal scroll hub joint |
| US8955220B2 (en) | 2009-03-11 | 2015-02-17 | Emerson Climate Technologies, Inc. | Powder metal scrolls and sinter-brazing methods for making the same |
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