JP2001173559A - Compressor - Google Patents
CompressorInfo
- Publication number
- JP2001173559A JP2001173559A JP2000342612A JP2000342612A JP2001173559A JP 2001173559 A JP2001173559 A JP 2001173559A JP 2000342612 A JP2000342612 A JP 2000342612A JP 2000342612 A JP2000342612 A JP 2000342612A JP 2001173559 A JP2001173559 A JP 2001173559A
- Authority
- JP
- Japan
- Prior art keywords
- case
- main body
- body case
- compressor
- refrigerant
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/806—Pipes for fluids; Fittings therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は空気調和機等の冷凍サイ
クルに組み込まれるコンプレッサに係り、特にコンプレ
ッサにおける密閉ケースのケース構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor incorporated in a refrigeration cycle of an air conditioner or the like, and more particularly to a case structure of a closed case in a compressor.
【０００２】[0002]
【従来の技術】室内を冷暖房する空気調和機等の冷凍サ
イクルには密閉型電動圧縮機であるコンプレッサが組み
込まれており、このコンプレッサにてＲ−１２やＲ−２
２等の冷媒を圧縮し、圧縮された冷媒を冷凍サイクル内
に吐出するようになっている。2. Description of the Related Art A refrigeration cycle such as an air conditioner for cooling and heating the inside of a room incorporates a compressor which is a hermetic electric compressor.
The second refrigerant is compressed, and the compressed refrigerant is discharged into the refrigeration cycle.
【０００３】従来のコンプレッサはレシプロタイプとロ
ータリタイプに大別され、各コンプレッサには密閉ケー
ス内にモータ部とこのモータ部により駆動される圧縮機
械部とを収容している。Conventional compressors are roughly classified into reciprocating type and rotary type compressors. Each compressor contains a motor unit and a compression machine unit driven by the motor unit in a sealed case.
【０００４】従来のロータリコンプレッサは図１０に示
すように構成され、密閉ケース１内にモータ部２と圧縮
機械部３とが収容される。モータ部２は密閉ケース１の
上部に配置され、下部には圧縮機械部３が配置される。[0004] A conventional rotary compressor is configured as shown in FIG. 1, and a motor unit 2 and a compression machine unit 3 are housed in a sealed case 1. The motor unit 2 is arranged on the upper part of the sealed case 1, and the compression unit 3 is arranged on the lower part.
【０００５】モータ部２は密閉ケース１に圧入されるス
テータ５と回転シャフト６を軸装したロータ７とからな
る電動モータで構成され、このモータ部２からの出力は
回転シャフト５を介して圧縮機械部３に伝達されるよう
になっている。回転シャフト５はメインベアリング８ａ
およびサブベアリング８ｂにより回転自在に支持され
る。The motor section 2 is composed of an electric motor comprising a stator 5 which is press-fitted into the closed case 1 and a rotor 7 having a rotating shaft 6 mounted thereon. The output from the motor section 2 is compressed via the rotating shaft 5. This is transmitted to the mechanical unit 3. The rotating shaft 5 is a main bearing 8a
And is rotatably supported by the sub bearing 8b.
【０００６】一方、圧縮機械部３は２つのシリンダ９，
１０を有し、各シリンダ９，１０により形成される圧縮
室内にピストンローラ１１，１２が収容される。各ピス
トンローラ１１，１２は、回転シャフト６のクランク部
に偏心回転自在に装着され、ピストンローラ１１，１２
の偏心回転により冷媒の圧縮作用が行なわれる。On the other hand, the compression machine section 3 has two cylinders 9,
The piston rollers 11 and 12 are accommodated in a compression chamber formed by the cylinders 9 and 10. Each of the piston rollers 11 and 12 is eccentrically mounted on a crank portion of the rotating shaft 6 so as to be eccentrically rotatable.
The compression action of the refrigerant is performed by the eccentric rotation of.
【０００７】そして、上側のシリンダ９が断面コの字状
のフレーム４にボルト固定され、フレーム４がケース１
の内周に溶接固定されることにより、圧縮機械部３はケ
ース１内に固定される。The upper cylinder 9 is fixed to the frame 4 having a U-shaped cross section by bolts.
Is fixed to the inside of the case 1 by welding.
【０００８】また、圧縮機械部３の圧縮室と密閉ケース
１の外側に設けられるアキュムレータ１３とは吸込管１
４，１５を介して連通され、アキュムレータ１３から冷
媒が吸込管１４，１５を通って圧縮室に案内されるよう
になっている。[0008] The compression chamber of the compression machine unit 3 and the accumulator 13 provided outside the closed case 1 are connected to the suction pipe 1.
The refrigerant flows from the accumulator 13 through the suction pipes 14 and 15 to the compression chamber.
【０００９】[0009]
【発明が解決しようとする課題】２シリンダ構造のロー
タリコンプレッサでは、アキュムレータ１３から圧縮機
械部３の圧縮室にガス冷媒を案内する２本の吸込管１
４，１５が延設されており、各吸込管１４，１５は薄肉
の密閉ケース１の取付孔に図１１に示すガイドパイプ１
６を介して気密に取り付けられる。吸込管１４，１５を
取り付ける２本の取付孔間のピッチは圧縮機械部３のデ
ィメンションによって決定されるが、いずれにしても孔
ピッチは小さいため、薄肉の密閉ケース１は取付孔と取
付孔との間のケース耐圧強度が低下するという問題があ
った。In a rotary compressor having a two-cylinder structure, two suction pipes 1 for guiding a gas refrigerant from an accumulator 13 to a compression chamber of a compression machine part 3 are provided.
The suction pipes 14 and 15 are provided in the mounting holes of the thin-walled closed case 1 in the guide pipe 1 shown in FIG.
6 to be airtightly attached. The pitch between the two mounting holes for mounting the suction pipes 14 and 15 is determined by the dimensions of the compression machine section 3. In any case, since the hole pitch is small, the thin-walled closed case 1 has the mounting hole, the mounting hole and During this time, there is a problem that the pressure resistance of the case decreases.
【００１０】一方、最近ではＲ１２やＲ２２冷媒に代わ
るコンプレッサ用冷媒が種々検討されており、各種の代
替冷媒が開発されている。この中には冷媒特性は優れる
が、飽和圧力が既存の冷媒より高い新冷媒が存在し、こ
の新冷媒を採用しようとすると、密閉ケース１の取付孔
付近のケース耐圧冷媒の低下が問題になっている。[0010] On the other hand, recently, various refrigerants for compressors in place of R12 and R22 refrigerants have been studied, and various alternative refrigerants have been developed. Among them, there is a new refrigerant having excellent refrigerant characteristics, but a new refrigerant having a higher saturation pressure than the existing refrigerant. If this new refrigerant is to be adopted, a drop in the case pressure-resistant refrigerant near the mounting hole of the closed case 1 becomes a problem. ing.
【００１１】また、従来のコンプレッサに用いられる密
閉ケースは、図１２に示すように深絞り加工により順次
絞り込んで形成されたケース本体１ａと、このケース本
体１ａの開口部を覆うカバーケース１ｂの２ピースで構
成され、ケース本体１ａにカバーケース１ｂを溶接にて
固定し、密閉構造としている。As shown in FIG. 12, a closed case used for a conventional compressor is composed of a case body 1a formed by successively drawing by deep drawing and a cover case 1b covering an opening of the case body 1a. The cover case 1b is fixed to the case body 1a by welding to form a sealed structure.
【００１２】密閉ケース１のケース本体１ａを深絞り加
工で形成すると、ケース本体１ａの湾曲部１８の肉厚が
著しく減少するため、その部分のケース耐圧強度が大き
く低下する。ケース耐圧強度を向上させるためには、湾
曲部に肉厚のアップが要求され、厚肉の鋼板等のケース
部材の深絞り加工が要求される。しかし、厚肉のケース
部材の深絞り加工は、大きな加工力を必要とし、加工に
困難性を伴い、深絞り加工でケース本体１ａの湾曲部１
８の肉厚を厚肉にすることは難しい。When the case main body 1a of the closed case 1 is formed by deep drawing, the thickness of the curved portion 18 of the case main body 1a is significantly reduced, so that the case pressure resistance of that portion is greatly reduced. In order to improve the pressure resistance of the case, it is required to increase the thickness of the curved portion, and deep drawing of a case member such as a thick steel plate is required. However, deep drawing of a thick case member requires a large processing force and involves difficulties in processing.
It is difficult to increase the wall thickness of 8.
【００１３】特に、既存の冷媒に代えて飽和圧力が高い
新冷媒を用いる高圧タイプのコンプレッサでは、密閉ケ
ース１のケース耐圧強度の向上が要求される。従来の深
絞り加工による密閉ケース１では、ケース耐圧強度や疲
労強度に対する安全率を充分に確保できない問題があっ
た。In particular, in a high-pressure compressor using a new refrigerant having a high saturation pressure in place of the existing refrigerant, it is required to improve the pressure resistance of the closed case 1. In the closed case 1 formed by the conventional deep drawing, there is a problem that a safety factor for the case pressure resistance and the fatigue strength cannot be sufficiently secured.
【００１４】また、コンプレッサの中には、実開昭６３
−１７４５８２号公報に示すように、密閉ケースを筒状
の本体ケース部とその両側の鏡板部（蓋体部）との３ピ
ースで構成したものがある。[0014] Some of the compressors are disclosed in
As shown in JP-A-174581, there is a case in which a closed case is constituted by three pieces of a cylindrical main body case portion and end plates (lid portions) on both sides thereof.
【００１５】しかし、３ピース構造の密閉ケースは、本
体ケース部を断面円弧状にロール成形した複数の片体の
溶接により形成したものであるから、溶接箇所が多い。
このため、母材である片体の鋼板と溶接部との境目が溶
接欠陥により強度が低下する場合があり、溶接部に微小
なピンホール等の欠陥が生じ、冷媒リークや密閉ケース
の破損が生じ易い虞があった。特に、３ピース構造の従
来の密閉ケースを備えたコンプレッサでは、冷媒特性が
優れるが飽和圧力が高い新冷媒を使用し、密閉ケース内
の冷媒圧力が高くなる場合の影響が全く考慮されていな
い。However, since the three-piece sealed case is formed by welding a plurality of pieces formed by roll forming the main body case into an arc-shaped cross section, there are many welds.
For this reason, the boundary between the single-piece steel plate as the base material and the weld may be reduced in strength due to welding defects, resulting in defects such as minute pinholes in the weld, refrigerant leakage and damage to the sealed case. There was a possibility that this would easily occur. Particularly, in a compressor having a conventional three-piece sealed case, a new refrigerant having excellent refrigerant characteristics but a high saturation pressure is used, and no consideration is given to the influence of a case where the refrigerant pressure in the closed case becomes high.
【００１６】本発明は、上述した事情を考慮してなされ
たもので、密閉ケースを筒状の本体ケース部と鏡板部と
に分けて構成し、密閉ケースの機械加工を容易にすると
ともに、ケース耐圧強度を向上させ、飽和圧力の高い冷
媒にも適した信頼性の高いコンプレッサを提供すること
を目的とする。The present invention has been made in view of the above-mentioned circumstances, and comprises a sealed case divided into a cylindrical main body case portion and a head plate portion, thereby facilitating machining of the sealed case, It is an object of the present invention to provide a highly reliable compressor that has improved pressure resistance and is suitable for a refrigerant having a high saturation pressure.
【００１７】本発明の他の目的は、密閉ケースに深絞り
加工を不要とし、ケース湾曲部の肉厚をアップさせて湾
曲部のケース耐圧強度を向上させ、ケース剛性を向上さ
せたコンプレッサを提供するにある。Another object of the present invention is to provide a compressor which does not require deep drawing in a closed case, increases the thickness of the case curved portion, improves the case pressure resistance of the curved portion, and improves the case rigidity. To be.
【００１８】本発明の別の目的は、密閉ケースの圧縮機
械部収納側をモータ部収納側より厚肉構造としてケース
耐圧強度およびケース剛性を向上させ、密閉ケースの変
形を防止したコンプレッサを提供するにある。Another object of the present invention is to provide a compressor in which the compression machine part storage side of the sealed case is made thicker than the motor part storage side to improve the case pressure resistance and the case rigidity and prevent the sealed case from being deformed. It is in.
【００１９】[0019]
【課題を解決するための手段】本発明に係るコンプレッ
サは、上述した課題を解決するために、請求項１に記載
したように、密閉ケース内にモータ部と圧縮機械部とを
収容したコンプレッサにおいて、冷媒としてＨＦＣ３２
を４０〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０ｗ
ｔ％の割合で混合した混合冷媒を使用するとともに、前
記密閉ケースを筒状の本体ケース部とこの本体ケース部
の両側に設けられる鏡板部の３ピースで構成し、上記本
体ケース部は平板状のケース部材を筒状に丸曲げして１
箇所の合せ部を形成し、この合せ部を接合して構成した
ものである。According to a first aspect of the present invention, there is provided a compressor in which a motor unit and a compression machine unit are housed in a sealed case. HFC32 as a refrigerant
40 to 60 wt% and HFC125 to 60 to 40 w
In addition to using a mixed refrigerant mixed at a ratio of t%, the closed case is composed of a cylindrical main body case portion and three pieces of end plate portions provided on both sides of the main body case portion. Of the case member is bent into a cylindrical shape
A joining portion is formed, and the joining portion is joined.
【００２０】また、本発明に係るコンプレッサは、上述
した課題を解決するために、請求項２に記載したよう
に、密閉ケース内にモータ部と圧縮機械部とを収容した
コンプレッサにおいて、冷媒としてＨＦＣ３２を４０〜
６０ｗｔ％およびＨＦＣ１２５を６０〜４０ｗｔ％の割
合で混合した混合冷媒を使用するとともに、前記密閉ケ
ースを筒状の本体ケース部とこの本体ケース部の両側に
設けられる鏡板部の３ピースで構成し、上記本体ケース
部はＳＰＨ材からなる平板状のケース部材を筒状に丸曲
げして１箇所の合せ部を形成し、この合せ部を接合して
構成したものである。According to a second aspect of the present invention, there is provided a compressor in which a motor unit and a compression mechanical unit are housed in a sealed case. From 40 to
A mixed refrigerant in which 60 wt% and HFC125 are mixed at a ratio of 60 to 40 wt% is used, and the closed case is constituted by a three-piece cylindrical main body case portion and end plate portions provided on both sides of the main body case portion, The main body case is formed by bending a flat plate-like case member made of SPH material into a cylindrical shape to form one joint, and joining the joints.
【００２１】さらに、本発明に係るコンプレッサは、上
述した課題を解決するために、請求項３に記載したよう
に、密閉ケース内にモータ部と圧縮機械部とを収容した
コンプレッサにおいて、冷媒としてＨＦＣ３２を４０〜
６０ｗｔ％およびＨＦＣ１２５を６０〜４０ｗｔ％の割
合で混合した混合冷媒を使用するとともに、前記密閉ケ
ースを筒状の本体ケース部とこの本体ケース部の両側に
設けられる鏡板部の３ピースで構成し、上記本体ケース
部は平板状のケース部材を筒状に丸曲げして１箇所の合
せ部を形成し、この合せ部を接合して構成するととも
に、上記本体ケース部と鏡板部の少なくとも一方の肉厚
を４ｍｍ以上としたものである。Further, in order to solve the above-mentioned problems, a compressor according to the present invention is a compressor in which a motor unit and a compression machine unit are housed in a closed case, and the HFC32 is used as a refrigerant. From 40 to
A mixed refrigerant in which 60 wt% and HFC125 are mixed at a ratio of 60 to 40 wt% is used, and the closed case is constituted by a three-piece cylindrical main body case portion and end plate portions provided on both sides of the main body case portion, The main body case portion is formed by bending a flat case member into a cylindrical shape to form a single joining portion, and joining the joining portions. The thickness was 4 mm or more.
【００２２】一方、本発明に係るコンプレッサは、上述
した課題を解決するために、請求項４に記載したよう
に、密閉ケース内にモータ部と圧縮機械部とを収容した
コンプレッサにおいて、冷媒としてＨＦＣ３２を４０〜
６０ｗｔ％およびＨＦＣ１２５を６０〜４０ｗｔ％の割
合で混合した混合冷媒を使用するとともに、前記密閉ケ
ースを筒状の本体ケース部とこの本体ケース部の両側に
設けられる鏡板部の３ピースで構成し、上記本体ケース
部はＳＰＨ材からなる平板状のケース部材を筒状に丸曲
げして１箇所の合せ部を形成し、この合せ部を接合して
構成するとともに、上記本体ケース部と鏡板部の少なく
とも一方の肉厚を４ｍｍ以上としたものである。On the other hand, in order to solve the above-mentioned problems, a compressor according to the present invention is a compressor in which a motor unit and a compression machine unit are housed in a closed case, and the HFC32 is used as a refrigerant. From 40 to
A mixed refrigerant in which 60 wt% and HFC125 are mixed at a ratio of 60 to 40 wt% is used, and the closed case is constituted by a three-piece cylindrical main body case portion and end plate portions provided on both sides of the main body case portion, The main body case portion is formed by joining a flat case member made of SPH material into a cylindrical shape by round bending to form a single joining portion, and joining the joining portions. At least one of the thicknesses is 4 mm or more.
【００２３】さらに、上述した課題を解決するために、
本発明に係るコンプレッサは、請求項５に記載したよう
に、本体ケース部の合せ部および鏡板部と本体ケース部
とのシーム部の少なくとも一方は、レーザ溶接により接
合したものである。Further, in order to solve the above-mentioned problems,
In the compressor according to the present invention, at least one of the mating portion of the main body case portion and the seam portion between the end plate portion and the main body case portion is joined by laser welding.
【００２４】[0024]
【作用】このコンプレッサでは、冷媒としてＨＦＣ３２
を４０〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０ｗ
ｔ％の割合で混合した混合冷媒を用い、密閉ケースを筒
状の本体ケース部と両側の鏡板部との３ピースで構成
し、本体ケース部は平板状ケース部材あるいは平板状Ｓ
ＰＨ材を筒状に丸曲げし、１箇所の合せ部を接合したの
で、飽和圧力が高いが、冷媒特性に優れた混合冷媒を使
用しても、本体ケース部の深絞り加工が不要となり、密
閉ケースの機械加工を容易に行なうことができるととも
に、ケース湾曲部の薄肉化を防止してケース耐圧強度を
向上させ、飽和圧力が高い冷媒にも適した信頼性の高い
コンプレッサを提供することができる。In this compressor, HFC32 is used as a refrigerant.
40 to 60 wt% and HFC125 to 60 to 40 w
Using a mixed refrigerant mixed at a rate of t%, the closed case is composed of three pieces of a cylindrical main body case portion and both end plate portions, and the main body case portion is a flat case member or a flat S member.
Since the PH material was round-bent into a cylindrical shape and one joint was joined, the saturation pressure was high, but even if a mixed refrigerant with excellent refrigerant characteristics was used, deep drawing of the main body case became unnecessary, It is possible to provide a highly reliable compressor suitable for a refrigerant having a high saturation pressure, while easily performing machining of a closed case, preventing a case curved portion from being thinned, improving a case pressure resistance. it can.
【００２５】また、本発明に係るコンプレッサでは、密
閉ケースの本体ケース部および鏡板部の肉厚を４ｍｍ以
上としたので、ケース耐圧強度やケース剛性を向上さ
せ、信頼性を高めることができる。Further, in the compressor according to the present invention, the thickness of the main body case portion and the end plate portion of the closed case is set to 4 mm or more, so that the case pressure resistance and the case rigidity can be improved, and the reliability can be improved.
【００２６】さらに、本発明に係るコンプレッサでは、
本体ケース部の合せ部ならびに鏡板部と本体ケース部と
のシーム部をレーザ溶接により接合したので、溶け込み
が良好で、ピンポール等を生じさせることなく良好な溶
接を確保でき、密閉ケースを高圧ケースとして使用して
も、溶接箇所からの亀裂発生を有効に防止できる。Further, in the compressor according to the present invention,
Since the joint of the main body case and the seam between the end plate and the main body case are joined by laser welding, penetration is good, good welding can be secured without generating pin poles, etc. Even if used, crack generation from the welded portion can be effectively prevented.
【００２７】[0027]
【実施例】以下、本発明に係るコンプレッサの一実施例
を添付図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the compressor according to the present invention will be described below with reference to the accompanying drawings.
【００２８】図１は２シリンダ構造のロータリコンプレ
ッサを示すものである。このロータリコンプレッサは密
閉ケース２０内に電動モータからなるモータ部２１とこ
のモータ部２１により駆動される圧縮機械部２２とが収
容され、モータ部２１は上部に、圧縮機械部２２は下部
にそれぞれ設置される。FIG. 1 shows a rotary compressor having a two-cylinder structure. In this rotary compressor, a motor unit 21 composed of an electric motor and a compression machine unit 22 driven by the motor unit 21 are accommodated in a closed case 20, and the motor unit 21 is installed at an upper part and the compression machine unit 22 is installed at a lower part. Is done.
【００２９】モータ部２１は密閉ケース２０内上部に圧
入されるステータ２３とこのステータ２３に回転自在に
設けられるロータ２４とを有し、ロータ２４には回転シ
ャフト２５が一体的に設けられる。The motor section 21 has a stator 23 which is press-fitted into the upper portion of the closed case 20 and a rotor 24 rotatably provided on the stator 23. The rotor 24 is provided integrally with a rotary shaft 25.
【００３０】回転シャフト２５はロータ２４より下方向
に突出して延び、圧縮機械部２２のメインベアリング２
６およびサブベアリング２７により回転自在に支持され
る。The rotary shaft 25 protrudes below the rotor 24 and extends therefrom.
6 and a sub bearing 27 so as to be rotatable.
【００３１】圧縮機械部２２は複数、例えば２個のシリ
ンダ（シリンダブロック）２８，２９を有し、各シリン
ダ２８，２９の圧縮室３０，３１内にピストンローラ３
２，３３が収容される。ピストンローラ３２，３３は回
転シャフト２５のクランク部２５ａ，２５ｂに軸装さ
れ、この回転シャフト２５の回転により偏心回転せしめ
られるようになっている。各シリンダ２８，２９間は仕
切プレート３４で仕切られている。そして、この圧縮機
械部２２は、メインベアリング２６側のシリンダ２８を
断面コの字状のフレーム４にボルト固定し、このフレー
ム４をケース内周部に溶接することにより、ケース内に
固定支持される。The compression mechanical section 22 has a plurality of, for example, two cylinders (cylinder blocks) 28, 29, and the piston rollers 3 are provided in compression chambers 30, 31 of each of the cylinders 28, 29.
2, 33 are accommodated. The piston rollers 32 and 33 are mounted on the crank portions 25a and 25b of the rotary shaft 25, and are eccentrically rotated by the rotation of the rotary shaft 25. Each cylinder 28, 29 is partitioned by a partition plate 34. The compression machine portion 22 is fixedly supported in the case by fixing the cylinder 28 on the side of the main bearing 26 to the frame 4 having a U-shaped cross section and welding the frame 4 to the inner peripheral portion of the case. You.
【００３２】一方、ロータリコンプレッサの密閉ケース
２０は有底筒状の本体ケース２０ａとこの本体ケース２
０ａの開口部を覆うカバーケース２０ｂとから構成さ
れ、カバーケース２０ｂを本体ケース２０ａに溶接にて
取り付けることにより密閉構造とされる。On the other hand, the sealed case 20 of the rotary compressor has a bottomed cylindrical main body case 20a and this main body case 2a.
And a cover case 20b that covers the opening of the main case 20a by welding.
【００３３】密閉ケース２０には収容された圧縮機械部
２２に対向して吸込用開口部３５が形成される。この吸
込用開口部３５は図２に示すように楕円形あるいは長円
形状でも、矩形状でもよい。吸込用開口部３５には密閉
ケース２０より厚肉の管ガイドホルダ３６が挿入され、
固定される。管ガイドホルダ３６は図３（Ａ）および
（Ｂ）に示すように吸込用開口部３５と補形形状に形成
され、全周に亘って取付フランジを形成する段付フラン
ジ３７を有する。A suction opening 35 is formed in the sealed case 20 so as to face the compression machine portion 22 housed therein. As shown in FIG. 2, the suction opening 35 may have an elliptical shape, an elliptical shape, or a rectangular shape. A pipe guide holder 36 thicker than the sealed case 20 is inserted into the suction opening 35,
Fixed. As shown in FIGS. 3A and 3B, the pipe guide holder 36 is formed in a complementary shape with the suction opening 35, and has a stepped flange 37 that forms a mounting flange over the entire circumference.
【００３４】管ガイドホルダ３６は密閉ケース２０の内
側から吸込用開口部３５に筒状のホルダ本体３８を挿入
し、段付フランジ３７を密閉ケース２０の内周壁に密着
される。段付フランジ３７を密着させた状態で図４に示
すように、抵抗溶接等の溶接により密閉ケース２０の内
側面に気密に接合させ、密閉ケース２０を局所的に補強
している。The tube guide holder 36 has a cylindrical holder body 38 inserted into the suction opening 35 from the inside of the closed case 20, and the stepped flange 37 is closely attached to the inner peripheral wall of the closed case 20. As shown in FIG. 4, the stepped flange 37 is tightly joined to the inner surface of the sealed case 20 by welding such as resistance welding in a state where the stepped flange 37 is in close contact, and the sealed case 20 is locally reinforced.
【００３５】管ガイドホルダ３６は圧縮機械部２２のデ
ィメンションに応じた寸法形状に構成され、複数、例え
ば２個の取付孔３９を有する。この取付孔３９にはガイ
ドパイプ４０が挿入され、銀ロー付けや銅ロー付け等の
溶接により気密に固定される。上記ガイドパイプ４０に
吸込管４３，４４が挿入され、溶接等で固定される。The pipe guide holder 36 is formed in a size and shape corresponding to the dimension of the compression machine section 22 and has a plurality of, for example, two mounting holes 39. A guide pipe 40 is inserted into the mounting hole 39, and is hermetically fixed by welding such as silver brazing or copper brazing. The suction pipes 43 and 44 are inserted into the guide pipe 40 and fixed by welding or the like.
【００３６】吸込管４３，４４は密閉ケース２０外に設
置されるアキュムレータ４５と圧縮機械部２２の圧縮室
３０，３１とを連通させるものであり、アキュムレータ
４５により気液分離されたガス冷媒は吸込管４３，４４
を通って圧縮室３０，３１に案内され、ここで圧縮作用
が行なわれる。圧縮室３０，３１で圧縮された冷媒は密
閉ケース２０内に吐出された後、吐出パイプ４６を通っ
て外部に吐出される。The suction pipes 43 and 44 connect the accumulator 45 installed outside the closed case 20 and the compression chambers 30 and 31 of the compression machine section 22, and the gas refrigerant separated by the accumulator 45 into gas and liquid is sucked. Tubes 43,44
Through the compression chambers 30, 31 where the compression action takes place. The refrigerant compressed in the compression chambers 30 and 31 is discharged into the closed case 20 and then discharged to the outside through the discharge pipe 46.
【００３７】ところで、ロータリコンプレッサに用いら
れる冷媒として例えばＨＦＣ（ハイドロフルオロカーボ
ン）３２（Ｒ３２）およびＨＦＣ１２５（Ｒ１２５）の
混合冷媒を用いることが考慮されている。この混合冷媒
は、従来のＲ−２２冷媒に比べ約１．５倍の冷凍能力が
期待されるが、飽和圧力は約１．７倍となる。Ｒ３２と
Ｒ１２５の混合割合は４０ｗｔ％〜６０ｗｔ％対６０ｗ
ｔ％〜４０ｗｔ％程度が好ましい。飽和圧力が１．７倍
となるような混合冷媒は、シリンダ排除容積が小さくな
り、また、吐出圧力が上がるので、圧縮機械部２２のコ
ンパクト化が図れ、各シリンダ２８，２９への吸込孔の
孔ピッチをさらに小さくする必要がある。By the way, it is considered that a mixed refrigerant of HFC (hydrofluorocarbon) 32 (R32) and HFC125 (R125) is used as the refrigerant used for the rotary compressor. This mixed refrigerant is expected to have a refrigerating capacity of about 1.5 times that of the conventional R-22 refrigerant, but has a saturation pressure of about 1.7 times. The mixing ratio of R32 and R125 is 40wt% -60wt% to 60w
About t% to 40 wt% is preferable. A mixed refrigerant having a saturation pressure of 1.7 times has a smaller cylinder displacement volume and a higher discharge pressure, so that the compression mechanical section 22 can be made compact, and suction holes for the cylinders 28 and 29 can be formed. It is necessary to further reduce the hole pitch.
【００３８】また、ロータリコンプレッサに用いられる
冷媒として、ＨＦＣ３２（Ｒ３２）を単独で用いると、
Ｒ３２冷媒の冷媒特性上、潜熱が大きく、冷凍能力が大
きいが、可燃性であり、吐出圧力が高い。Ｒ３２冷媒
は、合成油であるエステル油等の潤滑油に溶けにくく、
吐出温度が高い不具合がある。When HFC32 (R32) is used alone as a refrigerant used in the rotary compressor,
Due to the refrigerant characteristics of the R32 refrigerant, the latent heat is large and the refrigerating capacity is large, but it is flammable and the discharge pressure is high. R32 refrigerant is hardly soluble in lubricating oils such as ester oils which are synthetic oils,
There is a problem that the discharge temperature is high.
【００３９】一方、ＨＦＣ１２５（Ｒ１２５）冷媒は、
吐出圧力が低いが潜熱が小さく、冷凍能力が小さく、さ
らに、成績係数（ＣＤＰ）が低い等の問題がある。On the other hand, HFC125 (R125) refrigerant
There are problems such as low discharge pressure, low latent heat, low refrigeration capacity, and low coefficient of performance (CDP).
【００４０】これに対し、冷媒としてＨＦＣ３２を４０
〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０ｗｔ％の
比率（割合）で混合した混合冷媒は、吐出圧力の点を除
いて冷媒特性に優れ、ＨＦＣ３２冷媒やＨＦＣ１２５冷
媒を単独で用いた不具合を改善できる。On the other hand, HFC32 was used
A mixed refrigerant obtained by mixing 60 wt% and HFC125 at a ratio (ratio) of 60 to 40 wt% has excellent refrigerant characteristics except for the discharge pressure, and can solve the problem of using the HFC32 refrigerant or the HFC125 refrigerant alone.
【００４１】管ガイドホルダ３６の各取付孔３９の孔ピ
ッチは各シリンダ２８，２９の吸込孔ピッチと同一ピッ
チで形成されているが、管ガイドホルダ３６には密閉ケ
ース２０の板厚（肉厚）より厚い鋼材が使用される。こ
の鋼材は密閉ケース２０のケース部材と同じ材料である
ことが好ましい。The pitch of each mounting hole 39 of the pipe guide holder 36 is formed at the same pitch as the pitch of the suction holes of the cylinders 28 and 29. ) Thicker steels are used. This steel material is preferably the same material as the case member of the closed case 20.
【００４２】密閉ケース２０全体には、ケース内圧を
Ｐ，管ガイドホルダ３６の板厚をｔ，本体ケース２０ａ
の内径をＤとすると、概略（１）式で表わされる応力σ
が生じる。In the entire closed case 20, the internal pressure of the case is P, the plate thickness of the pipe guide holder 36 is t, and the main body case 20a
Let D be the inner diameter of the stress σ
Occurs.
【００４３】[0043]
【数１】σ＝Ｐ・Ｄ／２・ｔ ……（１）## EQU1 ## σ = P · D / 2 · t (1)
【００４４】しかし、密閉ケース２０の取付孔部分は、
孔が複数並設されるためケース耐圧強度的に最も弱くな
る。そこで、管ガイドホルダ３６の肉厚ｔを大きくする
ことにより、ケース耐圧強度を向上させることができ
る。However, the mounting hole of the sealed case 20
Since a plurality of holes are provided in parallel, the case pressure strength is the weakest. Therefore, by increasing the thickness t of the pipe guide holder 36, the pressure resistance of the case can be improved.
【００４５】本発明の第１実施例では、管ガイドホルダ
３６に段付フランジ３７を備えた例について示したが、
図５（Ａ），（Ｂ）および図６に示すように、段付フラ
ンジを備えない管ガイドホルダ５０であってもよい。こ
の場合には、管ガイドホルダ５０の密閉ケース２０の吸
込用開口部３５への挿入は密閉ケース２０内側からであ
っても、ケース外側からであってもよい。In the first embodiment of the present invention, an example in which the pipe guide holder 36 is provided with the stepped flange 37 has been described.
As shown in FIGS. 5A, 5B and 6, the pipe guide holder 50 may not have a stepped flange. In this case, the insertion of the tube guide holder 50 into the suction opening 35 of the closed case 20 may be performed from the inside of the closed case 20 or from the outside of the case.
【００４６】本発明に係るコンプレッサの好適実施例を
図７以降を参照して説明する。A preferred embodiment of the compressor according to the present invention will be described with reference to FIGS.
【００４７】図７および図８に示すロータリコンプレッ
サは、密閉ケース５１を３ピース構造に構成したこと
が、図１に示す密閉ケース構造と基本的に相違する。密
閉ケース５１を３ピース構造とすることにより、ケース
耐圧強度やケース剛性を向上させ、管ガイドホルダを不
要としたものである。他の構成は、図１に示すロータリ
コンプレッサと実質的に異ならないので、同じ符号を用
いて説明を省略する。The rotary compressor shown in FIGS. 7 and 8 is basically different from the sealed case structure shown in FIG. 1 in that the sealed case 51 has a three-piece structure. By forming the sealed case 51 into a three-piece structure, the case pressure resistance and the case rigidity are improved, and the tube guide holder is not required. The other configuration is not substantially different from the rotary compressor shown in FIG.
【００４８】密閉ケース５１は筒状の本体ケース部５１
ａとこの本体ケース部５１ａの両側に設けられる鏡板部
（蓋部）５１ｂ，５１ｃとの３ピースで構成される。密
閉ケース５１を形成するケース部材には、ＪＩＳ Ｇ３
１９３のＳＰＨ材等のＪＩＳ規格のプレス材が用いられ
る。The sealed case 51 has a cylindrical main body case portion 51.
a, and end plates (covers) 51b and 51c provided on both sides of the main body case 51a. The case members forming the closed case 51 include JIS G3
JIS standard press materials such as 193 SPH materials are used.
【００４９】ＪＩＳ Ｇ３１９３は熱間圧延鋼板の形状
や寸法、質量などを規定したもので、ＪＩＳ Ｇ３１９
３のＳＰＨ材は、熱間圧延鋼板である。ＳＰＨ材は、熱
間圧延鋼板としてＪＩＳ ３１３１の「ＳＰＨＣ」材、
「ＳＰＨＤ」材や「ＳＰＨＥ」材を総称するものであ
る。JIS G3193 defines the shape, dimensions, mass and the like of a hot-rolled steel sheet.
The SPH material of No. 3 is a hot-rolled steel plate. SPH material is “SPHC” material of JIS 3131 as hot rolled steel sheet,
"SPHD" material and "SPHE" material are collectively referred to.
【００５０】ＳＰＨ材は、材料の引張り強さや伸びの特
性が丸曲げ加工に適した機械的性質を有する。ＳＰＨ材
は、ＨＦＣ３２とＨＦＣ１２５の混合冷媒の物性に悪影
響を及ぼしたり、混合冷媒によって材料の劣化が生じる
ことがない。The SPH material has mechanical properties such as tensile strength and elongation characteristics suitable for round bending. The SPH material does not adversely affect the physical properties of the mixed refrigerant of HFC32 and HFC125 and does not cause deterioration of the material due to the mixed refrigerant.
【００５１】本体ケース部５１ａはＪＩＳ規格化された
プレート状ケース部材を機械加工により丸曲げし、合せ
部（シーム部）５５を溶接にて接合することにより形成
される。合せ部５５は１箇所の溶接部であるから、溶接
箇所を少なくすることができる。溶接箇所を少なくする
ことで、母材のＳＰＨ材と溶接部の境目に溶接欠陥が生
じる可能性が低く、溶接欠陥によりケース強度が低下し
たり、微小なピンホール等の欠陥の発生を防止できる。
溶接欠陥の影響は、密閉ケース５１の冷媒圧力が高いほ
ど大きく、ケース破損や冷媒リークが生じ易いが、これ
らの不具合を溶接箇所を少なくすることで防止できる。
鏡板部５１ｂ，５１ｃはケース部材をプレス加工，絞り
曲げ加工等の機械加工により形成される。その際、鏡板
部５１ｂ，５１ｃの底部は浅底であるため、深絞り加工
が不要となり、湾曲部の肉厚減少を少なくすることがで
きる。鏡板部５１ｂ，５１ｃは、深底に成形する必要が
ないので、肉厚のあるケース部材でも絞ることができ、
充分な強度を確保することができる。The main body case portion 51a is formed by bending a JIS standardized plate-shaped case member by machining, and joining the joint portion (seam portion) 55 by welding. Since the joining portion 55 is a single welding portion, the number of welding portions can be reduced. By reducing the number of welding points, the possibility that welding defects are generated at the boundary between the SPH material of the base material and the welding portion is low, and it is possible to prevent the case strength from being reduced due to the welding defects and the occurrence of defects such as minute pinholes. .
The effect of the welding defect is greater as the refrigerant pressure in the sealed case 51 is higher, and the case is easily damaged or the refrigerant leaks. However, these problems can be prevented by reducing the number of welding points.
The end plates 51b and 51c are formed by machining a case member such as pressing and drawing. At this time, since the bottoms of the end plates 51b and 51c are shallow, deep drawing is not required, and a decrease in the thickness of the curved portion can be reduced. Since the end plates 51b and 51c do not need to be formed at a deep bottom, even a thick case member can be squeezed.
Sufficient strength can be secured.
【００５２】ところで、既存の密閉ケースには例えば最
大内圧２６ｋｇ，ケース内径１１５．２ｍｍ，ケース高
さ２３０ｍｍのもので標準厚さ３．２ｍｍの板厚が採用
されているが、密閉ケースの耐圧強度が板厚の３乗に比
例すると考えると、Ｒ３２とＲ１２５の混合冷媒を使用
したものでは、飽和圧力がアシュレ条件（米国冷凍協
会：ＡＳＨＲＥで判定した条件）で既存のＲ１２やＲ２
２冷媒の単独使用１．３〜１．７倍程度になるため、約
３．７ｍｍ程度のケース肉厚が必要となり、ＪＩＳ系列
の標準厚さ（３．６ｍｍ，４．０ｍｍ，４．５ｍｍ…）
に従うと４ｍｍ以上のケース板厚が必要となる。The existing sealed case has a maximum internal pressure of 26 kg, a case inner diameter of 115.2 mm, a case height of 230 mm, and a standard thickness of 3.2 mm, for example. Is considered to be proportional to the cube of the plate thickness, in the case of using a refrigerant mixture of R32 and R125, the saturation pressure is the same as that of the existing R12 or R2 under the Ashle condition (the condition determined by the American Refrigeration Association: ASHRE).
Since the single use of the two refrigerants is about 1.3 to 1.7 times, a case thickness of about 3.7 mm is required, and the standard thickness of the JIS series (3.6 mm, 4.0 mm, 4.5 mm ... )
According to the above, a case thickness of 4 mm or more is required.
【００５３】密閉ケース５１の板厚を４ｍｍ以上と厚肉
化しても、密閉ケース５１を３ピース構造とすることに
より、深絞り加工は必要なく、鏡板部５１ｂ，５１ｃを
絞り曲げ加工やプレス加工等の機械加工で簡単に成形で
き、厚いケース部材でも深絞りを不要としたので絞るこ
とができて、ケース湾曲部の肉厚減少を少なくでき、充
分なケース耐圧強度，ケース剛性を確保することができ
る。Even if the thickness of the closed case 51 is increased to 4 mm or more, the closed case 51 has a three-piece structure, so that deep drawing is not required, and the end plates 51b and 51c are drawn and pressed or pressed. It can be easily formed by machining, etc., and it is possible to squeeze even thick case members because deep drawing is not necessary, it is possible to reduce the decrease in thickness of the curved part of the case, and secure sufficient case pressure strength and case rigidity. Can be.
【００５４】また、この密閉ケース５１においては、図
７に示すように本体ケース部５１ａの１個の合せ部５５
や図８に示す本体ケース部５１ａと鏡板部５１ｂ，５１
ｃとのシーム部５６，５７はレーザ溶接により接合され
る。レーザ溶接では、溶接時の溶け込みが良好であるた
めピンポールができにくく、飽和圧力が高い混合冷媒を
使用しても、充分なケース耐圧強度を確保でき、コンプ
レッサ使用時に溶接部付近からの亀裂発生が生じにくく
なる。In this sealed case 51, as shown in FIG. 7, one mating portion 55 of the main body case portion 51a is provided.
8 and the main body case 51a and the end plates 51b, 51 shown in FIG.
The seams 56 and 57 are joined by laser welding. In laser welding, pinholes are difficult to be formed due to good penetration during welding, and sufficient case pressure resistance can be ensured even when a mixed refrigerant with high saturation pressure is used, and cracks are generated near the weld when using a compressor. Less likely to occur.
【００５５】他方、密閉ケース５１の圧縮機械部２２収
容側は、圧縮機械部２２の固定のために変形が生じ易
く、飽和圧力が高い混合冷媒を使用すると、密閉ケース
５１と圧縮機械部２２の接合部に損傷や破損を生じさせ
るおそれがある。このため、このコンプレッサでは密閉
ケース５１の圧縮機械部２２収容側の剛性を、モータ部
２１収容側より大きくするため、図９に示すように、厚
肉構造とする。すなわち、圧縮機械部２２が収容される
側の密閉ケース５１をモータ部２１収容側より板厚の厚
い厚肉構造とし、圧縮機械部２２収容側のケース剛性や
ケース耐圧強度を向上させ、圧縮機械部２２側の密閉ケ
ース５１の変形を防止している。On the other hand, the side of the closed casing 51 on which the compression mechanical section 22 is accommodated is easily deformed due to the fixing of the compression mechanical section 22. The joint may be damaged or broken. For this reason, this compressor has a thick structure as shown in FIG. 9 in order to make the rigidity of the closed casing 51 on the compression machine section 22 storage side greater than that of the motor section 21 storage side. That is, the sealed case 51 on the side where the compression machine section 22 is housed has a thicker structure than the motor section 21 housing side, and the case rigidity and the case pressure resistance on the compression machine section 22 housing side are improved. The deformation of the sealed case 51 on the part 22 side is prevented.
【００５６】図１０に示す従来のロータリコンプレッサ
では、密閉ケースを深絞り加工で形成すると、ケース湾
曲部１８の肉厚が著しく減少するため、ケース耐圧強度
が低下し、ケース肉厚のアップが必要となる。しかし、
厚肉のケース部材の深絞り加工は加工の困難性を伴う。
そこで、図７〜図９に示すように、密閉ケース５１を筒
状の本体ケース部５１ａと両側に設けられる鏡板部５１
ｂ，５１ｃとの３ピース構造とすることで、深絞り加工
を不要とし、ケース肉厚の厚いものでも絞れるように
し、ケース湾曲部の肉厚減少を少なくしてケース耐圧強
度を向上させ、充分な強度を確保したものである。In the conventional rotary compressor shown in FIG. 10, when the hermetically closed case is formed by deep drawing, the thickness of the case curved portion 18 is remarkably reduced, so that the case pressure resistance is reduced and the case thickness needs to be increased. Becomes But,
Deep drawing of a thick case member involves processing difficulties.
Therefore, as shown in FIGS. 7 to 9, the closed case 51 is made up of a cylindrical main body case portion 51 a and end plate portions 51 provided on both sides.
The three-piece structure of b and 51c eliminates the need for deep drawing and enables the squeezing of thick cases, reducing the wall thickness of the curved part of the case and improving the pressure resistance of the case. High strength.
【００５７】また、図９に示すように、本体ケース部５
１Ａを圧縮機械部２２収容側がモータ部２１収容側より
厚肉構造に構成すると、圧縮機械部２２側のケース剛性
を高めることができ、圧縮機械部２２を本体ケース部５
１ａに固定のための変形や損傷を効果的に防止できる。Further, as shown in FIG.
When 1A is configured to have a thicker structure on the compression machine section 22 housing side than the motor section 21 housing side, the case rigidity on the compression machine section 22 side can be increased, and the compression machine section 22
Deformation and damage for fixing to 1a can be effectively prevented.
【００５８】なお、本発明の実施例ではロータリコンプ
レッサについて説明したが、必ずしもロータリコンプレ
ッサに限定されない。また密閉ケースは縦置きだけに限
定されず、横置きタイプのものでもよい。さらに、コン
プレッサに組み込まれるシリンダの数は必ずしも２個に
限定されない。Although the embodiment of the present invention has been described with respect to the rotary compressor, the invention is not necessarily limited to the rotary compressor. Further, the sealed case is not limited to the vertical installation, and may be a horizontal installation type. Further, the number of cylinders incorporated in the compressor is not necessarily limited to two.
【００５９】[0059]
【発明の効果】以上に述べたように本発明に係るコンプ
レッサにおいては、ＨＦＣ３２とＨＦＣ１２５とを所定
の重量％比率で混合した混合冷媒を用い、密閉ケースを
筒状の本体ケース部と両側の鏡板部との３ピースで構成
し、本体ケース部はケース部材を筒状に丸曲げし、１箇
所の合せ部を接合したので、冷媒特性に優れ、飽和圧力
の高い混合冷媒を使用しても、本体ケース部の深絞り加
工が不要となり、密閉ケースの機械加工を容易に行なう
ことができ、ケース湾曲部の薄肉化を防止してケース耐
圧強度を向上させることができ、溶接箇所を少なくして
ＨＦＣ３２とＨＦＣ１２５との混合冷媒の冷媒特性を積
極的に活用することができ、信頼性の高いコンプレッサ
を提供できる。As described above, in the compressor according to the present invention, a mixed refrigerant in which HFC32 and HFC125 are mixed at a predetermined weight% ratio is used, and the closed case is made up of a cylindrical main body case portion and both end plates. The main body case part is formed by bending the case member into a cylindrical shape and joining one mating part, so that even if a mixed refrigerant having a high saturation pressure is used, it has excellent refrigerant characteristics. Deep drawing of the main body case is not required, machining of the closed case can be easily performed, thinning of the curved part of the case can be prevented, and the pressure resistance of the case can be improved. The refrigerant characteristics of the mixed refrigerant of HFC32 and HFC125 can be positively utilized, and a highly reliable compressor can be provided.
【００６０】また、本体ケース部を平板状のＳＰＨ材を
筒状に丸曲げ加工すると、ＳＰＨ材の材料特性により丸
曲げ加工が容易となる一方、ＳＰＨ材が混合冷媒に悪影
響を与えることを防止でき、混合冷媒により材料の劣化
が生じることもない。When the main body case is formed by bending a flat SPH material into a cylindrical shape, the material properties of the SPH material facilitate the round bending process, while preventing the SPH material from adversely affecting the mixed refrigerant. The material can be prevented from being deteriorated by the mixed refrigerant.
【００６１】さらに、本体ケース部および鏡板部の肉厚
を４ｍｍ以上とすると、ケース耐圧強度やケース剛性を
向上させ、ケースの変形を防止して信頼性の向上が図れ
る。Further, when the thickness of the main body case portion and the end plate portion is 4 mm or more, the case pressure resistance and the case rigidity are improved, and the case is prevented from being deformed, so that the reliability is improved.
【００６２】さらにまた、本体ケース部の合せ部ならび
に鏡板部と本体ケース部のシーム部をレーザ溶媒により
接合したので、合せ部やシーム部の相互溶け込みが良好
で、ピンポール等を生じさせることなく良好な溶接を確
保でき、密閉ケースを高圧ケースとして使用しても、溶
接箇所からの亀裂発生を有効に防止できる。Further, since the joining portion of the main body case portion and the seam portion of the end plate portion and the main body case portion are joined by the laser solvent, the joining portion and the seam portion are well-melted with each other and good without causing pin poles and the like. In addition, even if the sealed case is used as a high-pressure case, cracks can be effectively prevented from being generated from the welded portions.
【図１】コンプレッサの一実施例を示す縦断面図。FIG. 1 is a longitudinal sectional view showing one embodiment of a compressor.
【図２】図１のコンプレッサに用いられる密閉ケースの
下部を示す外観図。FIG. 2 is an external view showing a lower part of a sealed case used in the compressor of FIG.
【図３】（Ａ）は密閉ケースの吸込用開口部に取り付け
られる管ガイドホルダの正面図、（Ｂ）は図３（Ａ）の
Ｂ−Ｂ線に沿う断面図。3A is a front view of a tube guide holder attached to a suction opening of a closed case, and FIG. 3B is a cross-sectional view taken along line BB of FIG. 3A.
【図４】密閉ケースの吸込用開口部への管ガイドホルダ
の取付状態を示す断面図。FIG. 4 is a sectional view showing a state in which a pipe guide holder is attached to a suction opening of a closed case.
【図５】（Ａ）および（Ｂ）は密閉ケースの吸込用開口
部に取り付けられる図３（Ａ）および（Ｂ）と同様な管
ガイドホルダの正面図および断面図。5 (A) and (B) are a front view and a sectional view of a pipe guide holder similar to FIGS. 3 (A) and (B), which is attached to a suction opening of a sealed case.
【図６】図５に示す管ガイドホルダを密閉ケースの吸込
用開口部に取り付けた状態を示す断面図。FIG. 6 is a cross-sectional view showing a state where the pipe guide holder shown in FIG. 5 is attached to a suction opening of a sealed case.
【図７】本発明に係るコンプレッサの好適実施例を示す
概略的な外観図。FIG. 7 is a schematic external view showing a preferred embodiment of a compressor according to the present invention.
【図８】本発明に係るコンプレッサの好適実施例を示す
縦断面図。FIG. 8 is a longitudinal sectional view showing a preferred embodiment of a compressor according to the present invention.
【図９】本発明に係るコンプレッサの他の実施例を示す
縦断面図。FIG. 9 is a longitudinal sectional view showing another embodiment of the compressor according to the present invention.
【図１０】従来のロータリコンプレッサを示す縦断面
図。FIG. 10 is a longitudinal sectional view showing a conventional rotary compressor.
【図１１】図１０のＡ部を概略的に示す部分断面図。FIG. 11 is a partial cross-sectional view schematically showing part A of FIG. 10;
【図１２】ロータリコンプレッサの本体ケース部の絞り
加工の加工手順を示す図。FIG. 12 is a diagram showing a processing procedure of drawing of a main body case portion of the rotary compressor.
２０，５１ 密閉ケース ２０ａ 本体ケース ２０ｂ カバーケース ２１ モータ部 ２２ 圧縮機械部 ２３ ステータ ２４ ロータ ２５ 回転シャフト ２６ メインベアリング ２７ サブベアリング ２８，２９ シリンダ ３０，３１ 圧縮室 ３２，３３ ピストンローラ ３６，５０ 管ガイドホルダ ３７ 段付フランジ ３９ 取付孔 ４３，４４ 吸込管 ４５ アキュムレータ ５１ａ 本体ケース部 ５１ｂ，５１ｃ 鏡板部 ５５ 合せ部（シーム部） ５６，５７ シーム部 20, 51 Sealed case 20a Body case 20b Cover case 21 Motor part 22 Compressed machine part 23 Stator 24 Rotor 25 Rotary shaft 26 Main bearing 27 Sub bearing 28, 29 Cylinder 30, 31 Compression chamber 32, 33 Piston roller 36, 50 Pipe guide Holder 37 Stepped flange 39 Mounting hole 43, 44 Suction pipe 45 Accumulator 51a Main body case section 51b, 51c End plate section 55 Fitting section (seam section) 56, 57 Seam section
Claims (5)
を収容したコンプレッサにおいて、冷媒としてＨＦＣ３
２を４０〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０
ｗｔ％の割合で混合した混合冷媒を使用するとともに、
前記密閉ケースを筒状の本体ケース部とこの本体ケース
部の両側に設けられる鏡板部の３ピースで構成し、上記
本体ケース部は平板状のケース部材を筒状に丸曲げして
１箇所の合せ部を形成し、この合せ部を接合して構成し
たことを特徴とするコンプレッサ。1. A compressor in which a motor unit and a compression machine unit are housed in a closed case, wherein HFC3 is used as a refrigerant.
2 to 40 to 60 wt% and HFC125 to 60 to 40
While using a mixed refrigerant mixed at a ratio of wt%,
The sealed case is composed of a cylindrical main body case part and three pieces of end plate parts provided on both sides of the main body case part. The main body case part is formed by bending a flat case member into a cylindrical shape and forming one piece. A compressor characterized by forming a joining portion and joining the joining portion.
を収容したコンプレッサにおいて、冷媒としてＨＦＣ３
２を４０〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０
ｗｔ％の割合で混合した混合冷媒を使用するとともに、
前記密閉ケースを筒状の本体ケース部とこの本体ケース
部の両側に設けられる鏡板部の３ピースで構成し、上記
本体ケース部はＳＰＨ材からなる平板状のケース部材を
筒状に丸曲げして１箇所の合せ部を形成し、この合せ部
を接合して構成したことを特徴とするコンプレッサ。2. A compressor in which a motor unit and a compression machine unit are housed in a closed case, wherein HFC3 is used as a refrigerant.
2 to 40 to 60 wt% and HFC125 to 60 to 40
While using a mixed refrigerant mixed at a ratio of wt%,
The closed case is composed of a cylindrical main body case part and three pieces of end plate parts provided on both sides of the main body case part. The main body case part is formed by bending a flat case member made of SPH material into a cylindrical shape. A compressor formed by forming a single joining portion by joining the joining portions.
を収容したコンプレッサにおいて、冷媒としてＨＦＣ３
２を４０〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０
ｗｔ％の割合で混合した混合冷媒を使用するとともに、
前記密閉ケースを筒状の本体ケース部とこの本体ケース
部の両側に設けられる鏡板部の３ピースで構成し、上記
本体ケース部は平板状のケース部材を筒状に丸曲げして
１箇所の合せ部を形成し、この合せ部を接合して構成す
るとともに、上記本体ケース部と鏡板部の少なくとも一
方の肉厚を４ｍｍ以上としたことを特徴とするコンプレ
ッサ。3. A compressor in which a motor unit and a compression machine unit are housed in a closed case, wherein HFC3 is used as a refrigerant.
2 to 40 to 60 wt% and HFC125 to 60 to 40
While using a mixed refrigerant mixed at a ratio of wt%,
The sealed case is composed of a cylindrical main body case part and three pieces of end plate parts provided on both sides of the main body case part. The main body case part is formed by bending a flat case member into a cylindrical shape and forming one piece. A compressor characterized by forming a joining portion, joining the joining portion, and making at least one of the main body case portion and the end plate portion have a thickness of 4 mm or more.
を収容したコンプレッサにおいて、冷媒としてＨＦＣ３
２を４０〜６０ｗｔ％およびＨＦＣ１２５を６０〜４０
ｗｔ％の割合で混合した混合冷媒を使用するとともに、
前記密閉ケースを筒状の本体ケース部とこの本体ケース
部の両側に設けられる鏡板部の３ピースで構成し、上記
本体ケース部はＳＰＨ材からなる平板状のケース部材を
筒状に丸曲げして１箇所の合せ部を形成し、この合せ部
を接合して構成するとともに、上記本体ケース部と鏡板
部の少なくとも一方の肉厚を４ｍｍ以上としたことを特
徴とするコンプレッサ。4. A compressor in which a motor section and a compression mechanical section are housed in a closed case, wherein HFC3 is used as a refrigerant.
2 to 40 to 60 wt% and HFC125 to 60 to 40
While using a mixed refrigerant mixed at a ratio of wt%,
The closed case is composed of a cylindrical main body case part and three pieces of end plate parts provided on both sides of the main body case part. The main body case part is formed by bending a flat case member made of SPH material into a cylindrical shape. And a joining portion formed at one place by joining the joining portions, and the thickness of at least one of the main body case portion and the end plate portion is set to 4 mm or more.
体ケース部とのシーム部の少なくとも一方は、レーザ溶
接により接合した請求項１ないし請求項４のいずれかに
記載のコンプレッサ。5. The compressor according to claim 1, wherein at least one of a mating portion of the main body case portion and a seam portion between the end plate portion and the main body case portion are joined by laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000342612A JP2001173559A (en) | 2000-11-09 | 2000-11-09 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000342612A JP2001173559A (en) | 2000-11-09 | 2000-11-09 | Compressor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31361893A Division JP3144747B2 (en) | 1993-12-14 | 1993-12-14 | compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001173559A true JP2001173559A (en) | 2001-06-26 |
Family
ID=18817128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000342612A Pending JP2001173559A (en) | 2000-11-09 | 2000-11-09 | Compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001173559A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027853A (en) * | 2002-06-21 | 2004-01-29 | Matsushita Electric Ind Co Ltd | Sealed compressor |
| JP2005283425A (en) * | 2004-03-30 | 2005-10-13 | Denso Corp | Temperature sensor |
| CN105683572A (en) * | 2013-10-29 | 2016-06-15 | 大金工业株式会社 | Compressor and method for producing compressor |
| JP2018123717A (en) * | 2017-01-30 | 2018-08-09 | 株式会社富士通ゼネラル | Rotary compressor and refrigeration cycle device |
-
2000
- 2000-11-09 JP JP2000342612A patent/JP2001173559A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004027853A (en) * | 2002-06-21 | 2004-01-29 | Matsushita Electric Ind Co Ltd | Sealed compressor |
| JP2005283425A (en) * | 2004-03-30 | 2005-10-13 | Denso Corp | Temperature sensor |
| CN105683572A (en) * | 2013-10-29 | 2016-06-15 | 大金工业株式会社 | Compressor and method for producing compressor |
| US9841024B2 (en) | 2013-10-29 | 2017-12-12 | Daikin Industries, Ltd. | Compressor and method for producing compressor |
| JP2018123717A (en) * | 2017-01-30 | 2018-08-09 | 株式会社富士通ゼネラル | Rotary compressor and refrigeration cycle device |
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