JP2564266Y2 - Centrifugal compressor - Google Patents
Centrifugal compressorInfo
- Publication number
- JP2564266Y2 JP2564266Y2 JP1990124214U JP12421490U JP2564266Y2 JP 2564266 Y2 JP2564266 Y2 JP 2564266Y2 JP 1990124214 U JP1990124214 U JP 1990124214U JP 12421490 U JP12421490 U JP 12421490U JP 2564266 Y2 JP2564266 Y2 JP 2564266Y2
- Authority
- JP
- Japan
- Prior art keywords
- polyimide
- centrifugal compressor
- magnetic bearing
- rotor
- 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.)
- Expired - Lifetime
Links
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 (産業上の利用分野) 本考案は、2,2−ジクロロ−1,1,1−トリフルオロエタ
ンCHCl2CF3(以下フロン123と記述する)を冷媒に使用
する遠心圧縮機に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to 2,2-dichloro-1,1,1-trifluoroethane CHCl 2 CF 3 (hereinafter referred to as Freon 123). The present invention relates to a centrifugal compressor that uses water as a refrigerant.
(従来の技術) 従来のヒートポンプ等に用いられる遠心圧縮機では、
ジクロル・ジフルオルメタンCCl2F2(フロン12)、トリ
クロル・モノフルオルメタンCCl3F(フロン11)、モノ
クロル・ジフルオルメタンCHCF2(フロン22)等のフロ
ンが冷媒として使われた来た。(Prior art) In a centrifugal compressor used in a conventional heat pump or the like,
Fluorocarbons such as dichlorodifluoromethane CCl 2 F 2 (fluorocarbon 12), trichloromonofluoromethane CCl 3 F (fluorocarbon 11), and monochlorodifluoromethane CHCF 2 (fluorocarbon 22) have been used as refrigerants. .
(考案が解決しようとする課題) しかし、これ等のフロンはオゾン破壊力が高く、温室
結果係数も大きいため、地球の環境を保護する上で問題
となってきた。(Problems to be solved by the invention) However, these fluorocarbons have a high ozone depleting power and a large greenhouse result coefficient, and thus have become a problem in protecting the environment of the earth.
これ等以外のフロンは、活性が強く、絶縁材料を損傷
させ、軸受の潤滑剤をも分解してしまい、ヒートポンプ
としての性能を低下させるばかりか、遠心圧縮機の破損
にもつながる。Other fluorocarbons have high activity and damage insulating materials, decompose lubricants of bearings, and deteriorate not only the performance as a heat pump but also the centrifugal compressor.
本考案は上記した従来の欠点に鑑みなされたものであ
り、、オゾン破壊力が低く温室効果係数も小さいフロン
123を冷媒に使用した遠心圧縮機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 conventional disadvantages, and has a low ozone depleting power and a low greenhouse effect coefficient.
It is an object to provide a centrifugal compressor using 123 as a refrigerant.
(課題を解決するための手段) 上記目的を達成するため本考案においてはフロン123
を冷媒に用い、同一の冷媒で圧縮機の機内を冷却すると
ともに、軸変位センサを備えた磁気軸受を有する遠心圧
縮機において、磁気軸受は鉄心スロットにポリイミド被
覆絶縁電線とポリイミドフィルムまたは芳香族ポリアミ
ド紙からなるスロット絶縁を収納しポリイミドを含有し
た樹脂にてモールドされた電磁石を備え、軸変位センサ
には回転子の位置を検出して前記磁気軸受の制御を行う
ポリイミド被覆絶縁電線を用いポリイミドを含有した含
浸樹脂にてモールドされたコイルを備えた構成とする。(Means for solving the problem) In order to achieve the above object, in the present invention, Freon 123 is used.
In a centrifugal compressor having a magnetic bearing equipped with an axial displacement sensor while cooling the inside of the compressor with the same refrigerant, the magnetic bearing uses a polyimide-coated insulated wire and a polyimide film or aromatic polyamide in the iron core slot. Equipped with an electromagnet molded with a resin containing polyimide containing a slot insulation made of paper and using a polyimide-coated insulated wire that controls the magnetic bearing by detecting the position of the rotor on the shaft displacement sensor. A configuration in which a coil molded with the impregnated resin contained is provided.
(作用) 上述した構成の磁気軸受装置は、使用した絶縁材料が
フロン123に対して強く、フロン123浸漬下で運転された
際に、絶縁物質が抽出されたり、クラックが入ったりし
て電磁石や変位検出用センサに有害な作用を引起こすこ
とがなく、また磁気軸受を採用したことにより従来の玉
軸受やすべり軸受等の潤滑剤として必要とされるグリス
や潤滑油が不要となるため、完全密封が達成でき圧縮機
内の冷媒が大気中に放出されることが皆無となり、環境
破壊を引き起こすこともなく、かつ非接触に安定に支持
でき従来の軸受のように潤滑剤が冷媒中に混入すること
がなくヒートポンプとしての性能を低下させることもな
い。(Operation) In the magnetic bearing device having the above-described configuration, the used insulating material is strong against Freon 123, and when the magnetic bearing device is operated under the Freon 123 immersion, the insulating material is extracted or cracks are generated, so that the electromagnet It does not cause harmful effects on the displacement detection sensor, and the use of magnetic bearings eliminates the need for grease and lubricating oil, which are required as lubricants for conventional ball bearings and plain bearings. Sealing can be achieved and the refrigerant in the compressor is never released to the atmosphere, it does not cause environmental destruction, it can be stably supported in a non-contact manner, and lubricant is mixed into the refrigerant like a conventional bearing There is no deterioration of the performance as a heat pump.
(実施例) 本考案の一実施例は第1図をもとに説明する。第1図
は本考案による遠心圧縮機の縦断面図であり、1はイン
ペラであり、回転子2の軸端部に固定されている。3は
駆動用電動機であり、回転子2に取付けられるロータ鉄
心3−1と静止側に取付けられるステータ鉄心3−2を
有し、回転子2とインペラ1を回転させる駆動源とな
る。4はラジアル磁気軸受であり、上下左右4個の電磁
石からなる。5はラジアル方向の軸変位検出センサであ
り、軸方向2カ所で上下左右の軸変位を検出する。6は
スラスト磁気軸受であり、ドーナツ状の2個の電磁石か
らなり、回転子2のラジアル方向のディスク状突起を挟
んで対向して取付けられている。7はスラスト方向の軸
変位検出センサであり、軸端部に取付けられている。こ
こで、軸変位検出センサ5,7としては例えば渦電流式変
位計や鉄心にコイルを巻いた磁気抵抗式変位計を用い
る。8は制御装置であり、各軸変位検出センサ5,7から
の軸変位信号により回転子2を安定に非接触で支持する
信号を作り各電磁石4,6に送る。(Embodiment) An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a longitudinal sectional view of a centrifugal compressor according to the present invention, wherein 1 is an impeller, which is fixed to a shaft end of a rotor 2. A driving motor 3 has a rotor core 3-1 attached to the rotor 2 and a stator core 3-2 attached to the stationary side, and serves as a drive source for rotating the rotor 2 and the impeller 1. Numeral 4 denotes a radial magnetic bearing, which comprises four electromagnets in the upper, lower, left and right directions. Reference numeral 5 denotes a radial axial displacement detection sensor which detects vertical, horizontal, and lateral axial displacements at two locations in the axial direction. Reference numeral 6 denotes a thrust magnetic bearing, which is composed of two donut-shaped electromagnets, and is attached to face the rotor 2 with a radial disk-shaped projection interposed therebetween. Reference numeral 7 denotes a sensor for detecting axial displacement in the thrust direction, which is attached to the shaft end. Here, as the axial displacement detection sensors 5 and 7, for example, an eddy current displacement meter or a magnetoresistive displacement meter in which a coil is wound around an iron core is used. Reference numeral 8 denotes a control device that generates a signal for stably supporting the rotor 2 in a non-contact manner based on the shaft displacement signals from the shaft displacement detection sensors 5 and 7 and sends the signal to the electromagnets 4 and 6.
第2図は第1図の磁気軸受4,6用電磁石の要部断面図
であり、9はポリイミド被覆絶縁電線からなるコイルで
あり、10はコイル9をモールドする含浸樹脂であり、ポ
リイミドを含有した樹脂を使用している。11はスロット
絶縁であり、ポリイミドフィルムまたは芳香族ポリアミ
ド紙からなる。12はこれらをおさめるスロットを持った
鉄心である。FIG. 2 is a sectional view of an essential part of the electromagnets for the magnetic bearings 4 and 6 shown in FIG. 1, wherein 9 is a coil made of a polyimide-coated insulated wire, 10 is an impregnating resin for molding the coil 9, and contains polyimide. The resin used is used. Reference numeral 11 denotes slot insulation, which is made of a polyimide film or aromatic polyamide paper. 12 is an iron core with a slot for holding these.
第3図は第1図の軸変位検出センサの先端部断面図で
あり、第2図同様9はコイル10は含浸樹脂である。13は
モールドされたコイル9を支持するケースである。FIG. 3 is a sectional view of the tip of the axial displacement detection sensor of FIG. 1, and the coil 9 is an impregnated resin 9 as in FIG. Reference numeral 13 denotes a case for supporting the molded coil 9.
次に作用効果について説明する。本考案によれば回転
子2の軸変位は各軸変位検出センサ5,7によって検出さ
れ、制御装置8に送られる。制御装置8では送られた信
号によって、回転子2を非接触に安定に支持するための
各信号を作り、各磁気軸受4,6の電磁石へ送る。各磁気
軸受4,6の電磁石では送られてきた信号によって回転子
2を各磁気軸受4,6の中心に位置させる吸引力を生ず
る。従って回転子2は非接触でかつ安定に支持すること
ができ、さらにフロン123に対して強い絶縁材を使用し
たことにより冷媒としてフロン123を使用することがで
きる。Next, the operation and effect will be described. According to the present invention, the axial displacement of the rotor 2 is detected by the respective axial displacement detecting sensors 5 and 7 and sent to the control device 8. The control device 8 generates signals for stably supporting the rotor 2 in a non-contact manner based on the transmitted signals, and sends the signals to the electromagnets of the magnetic bearings 4 and 6. The electromagnets of the magnetic bearings 4 and 6 generate an attractive force for positioning the rotor 2 at the center of each of the magnetic bearings 4 and 6 by the transmitted signal. Therefore, the rotor 2 can be stably supported in a non-contact manner, and the use of a strong insulating material against Freon 123 allows Freon 123 to be used as a refrigerant.
以上述べたように本考案の遠心圧縮機は冷媒としてフ
ロン123を使用することが出来るので、万が一冷媒が大
気中に漏れても成層圈オゾン層を破壊する事がなく、地
球の温暖化等の環境問題を引起こす事もない。As described above, the centrifugal compressor of the present invention can use Freon 123 as a refrigerant, so that even if the refrigerant leaks into the atmosphere, it does not destroy the stratospheric ozone layer, and the global warming etc. It does not cause environmental problems.
また、回転子を非接触で支持できるので、潤滑剤を使
用する必要がなく、従って潤滑剤が冷媒中に混入してヒ
ートポンプの性能低下を招く事もなく、軸受の潤滑不良
による遠心圧縮機自体の破損事故等の心配もない。In addition, since the rotor can be supported in a non-contact manner, there is no need to use a lubricant, so that the lubricant is not mixed into the refrigerant to cause a decrease in the performance of the heat pump, and the centrifugal compressor itself due to poor lubrication of the bearing. No worries about damage accidents.
第1図は本考案の一実施例の遠心圧縮機の縦断面図、第
2図は第1図の磁気軸受用電磁石の要部断面図、第3図
は第1図の軸変位検出センサの先端部断面図である。 1…インペラ、2…回転子 3…電動機、4…ラジアル磁気軸受 5…軸変位検出センサ、6…スラスト磁気軸受 7…軸変位検出センサ、8…制御装置 9…コイル、10…含浸樹脂 11…スロット絶縁、12…鉄心 13…ケースFIG. 1 is a longitudinal sectional view of a centrifugal compressor according to an embodiment of the present invention, FIG. 2 is a sectional view of an essential part of a magnetic bearing electromagnet of FIG. 1, and FIG. It is a front-end | tip part sectional drawing. DESCRIPTION OF SYMBOLS 1 ... Impeller, 2 ... Rotor 3 ... Electric motor, 4 ... Radial magnetic bearing 5 ... Shaft displacement detection sensor, 6 ... Thrust magnetic bearing 7 ... Shaft displacement detection sensor, 8 ... Control device 9 ... Coil, 10 ... Impregnated resin 11 ... Slot insulation, 12 ... iron core 13 ... case
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平1−269867(JP,A) 特開 平1−112708(JP,A) 特開 平2−136046(JP,A) 特開 平2−237395(JP,A) 特開 平2−237079(JP,A) 特開 昭64−9601(JP,A) 特開 平2−78793(JP,A) 実開 昭62−26596(JP,U) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-269867 (JP, A) JP-A-1-112708 (JP, A) JP-A-2-136046 (JP, A) JP-A-2- 237395 (JP, A) JP-A-2-237079 (JP, A) JP-A-64-9601 (JP, A) JP-A-2-78793 (JP, A) Jpn.
Claims (1)
トリフルオロエタンを用い、同一の冷媒で圧縮機の機内
を冷却するとともに、軸変位センサを備えた磁気軸受を
有する遠心圧縮機において、磁気軸受は鉄心スロットに
ポリイミド被覆絶縁電線とポリイミドフィルムまたは芳
香族ポリアミド紙からなるスロット絶縁を収納し、ポリ
イミドを含有した樹脂にてモールドされた電磁石を有
し、軸変位センサは回転子の位置を検出して前記磁気軸
受の制御を行うポリイミド被覆絶縁電線を用いポリイミ
ドを含有した含浸樹脂にてモールドされたコイルを備え
たことを特徴とする遠心圧縮機。1. A refrigerant to be compressed which is 2,2-dichloro-1,1,1-
In a centrifugal compressor that uses trifluoroethane and cools the inside of the compressor with the same refrigerant and has a magnetic bearing with an axial displacement sensor, the magnetic bearing is made of a polyimide-coated insulated wire and a polyimide film or an aromatic film in the iron core slot. A slot insulation made of polyamide paper is housed, and has an electromagnet molded with a resin containing polyimide, and a shaft displacement sensor uses a polyimide-coated insulated wire that detects the position of a rotor and controls the magnetic bearing. A centrifugal compressor comprising a coil molded with an impregnated resin containing polyimide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990124214U JP2564266Y2 (en) | 1990-11-28 | 1990-11-28 | Centrifugal compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990124214U JP2564266Y2 (en) | 1990-11-28 | 1990-11-28 | Centrifugal compressor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0482394U JPH0482394U (en) | 1992-07-17 |
JP2564266Y2 true JP2564266Y2 (en) | 1998-03-04 |
Family
ID=31871874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990124214U Expired - Lifetime JP2564266Y2 (en) | 1990-11-28 | 1990-11-28 | Centrifugal compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2564266Y2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01112708A (en) * | 1987-10-27 | 1989-05-01 | Mitsubishi Alum Co Ltd | Electromagnetic coil |
JPH0749888B2 (en) * | 1988-04-20 | 1995-05-31 | 株式会社荏原製作所 | heat pump |
-
1990
- 1990-11-28 JP JP1990124214U patent/JP2564266Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0482394U (en) | 1992-07-17 |
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