JPH02299437A - Refrigerating cycle - Google Patents

Refrigerating cycle

Info

Publication number
JPH02299437A
JPH02299437A JP11784289A JP11784289A JPH02299437A JP H02299437 A JPH02299437 A JP H02299437A JP 11784289 A JP11784289 A JP 11784289A JP 11784289 A JP11784289 A JP 11784289A JP H02299437 A JPH02299437 A JP H02299437A
Authority
JP
Japan
Prior art keywords
winding
compressor
film
insulating film
insulating
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
Application number
JP11784289A
Other languages
Japanese (ja)
Inventor
Katsuhiko Kanetake
金武 克彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP11784289A priority Critical patent/JPH02299437A/en
Publication of JPH02299437A publication Critical patent/JPH02299437A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Insulating Materials (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

PURPOSE:To improve reliability by a method wherein an insulating film for partitioning the windings of a motor incorporated into a compressor is formed of an insulating material having high resistance to hydrolysis. CONSTITUTION:The stator coil 2 of the winding unit 1 of a motor incorporated into a compressor is constituted of the first winding 3, the second winding 4 and an insulating film 5 for partitioning the first winding 3 and the second winding 4. The insulating film 5 is constituted of an insulating material having a high resistance to hydrolysis such as the laminate film of polyethylene terephthalate film 6 and a polyethylene sulfide film 7, for example. According to this method, the dielectric breakdown voltage of the winding units of the motor its never deteriorated during use and the reliability of a refrigerating cycle is improved.

Description

【発明の詳細な説明】 〔発明の目的〕 (産業上の利用分野) 本発明は冷凍機油としてポリアルキレングリコールを用
いた冷凍サイクルに関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a refrigeration cycle using polyalkylene glycol as refrigeration oil.

(従来の技術) 一般に用いられている冷蔵庫に組み込まれている冷凍サ
イクルは、圧縮機、熱交換器、膨脹装置を順次配管で接
続して構成されるものであり、冷凍機油として鉱油を用
い、圧縮機に組み込まれる電動機の絶縁フィルムとして
ポリエステル樹脂フィルムを用い、冷媒としてはR12
(フロン)を使用している。
(Prior Art) A refrigeration cycle built into a commonly used refrigerator is constructed by sequentially connecting a compressor, a heat exchanger, and an expansion device with piping, and uses mineral oil as the refrigeration oil. A polyester resin film is used as the insulating film of the electric motor incorporated in the compressor, and R12 is used as the refrigerant.
(Freon) is used.

フロンガスは、毒性がなく、化学的に安定であり、金属
を腐食させない特性を持っているが、フロンによるオゾ
ン層破壊に対する保護の目的から、R12(フロン)の
使用が規制されている。
Although fluorocarbon gas is non-toxic, chemically stable, and does not corrode metals, the use of R12 (fluorocarbons) is regulated for the purpose of protecting against ozone layer depletion caused by fluorocarbons.

そこでR12(フロン)と熱力学的性質が似ているR1
34a (1,1,1,2−テトラフルオロエタン)を
冷媒として使用する研究が行われているが、冷媒として
R134aを使用する場合には、溶解性の点から冷凍機
油としてはポリアルキレングリコールを使用する必要が
ある。
Therefore, R1, which has similar thermodynamic properties to R12 (fluorocarbon),
Research is being conducted on using R134a (1,1,1,2-tetrafluoroethane) as a refrigerant, but when using R134a as a refrigerant, it is recommended to use polyalkylene glycol as the refrigerating machine oil from the viewpoint of solubility. need to use.

(発明が解決しようとする課題) 冷凍サイクルの冷媒としてR134aを用いた場合には
、冷凍機油としてはポリアルキレングリコールを使用す
るために、圧縮機に組み込まれる電動機の絶縁フィルム
として使用されるポリエステル樹脂フィルムがポリアル
キレングリコールに溶解している水分により加水分解し
、絶縁性を低下させてしまうという難点がある。
(Problem to be Solved by the Invention) When R134a is used as the refrigerant in the refrigeration cycle, polyester resin used as the insulating film of the electric motor incorporated in the compressor is used because polyalkylene glycol is used as the refrigerating machine oil. The problem is that the film is hydrolyzed by the water dissolved in the polyalkylene glycol, reducing its insulation properties.

本発明は上記した点に鑑みてなされたもので、圧縮機に
組み込まれる電動機の巻線を仕切るための絶縁フィルム
を、耐加水分解性の高い絶縁材料のもので形成し、冷凍
機油として用いられるポリアルキレングリコールによる
絶縁フィルムの絶縁性低下を防ぎ、運転の信頼性を確保
するようにした冷凍サイクル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 points, and an insulating film for partitioning the windings of an electric motor incorporated in a compressor is formed of an insulating material with high hydrolysis resistance, and the film is used as refrigerating machine oil. The purpose of the present invention is to provide a refrigeration cycle that prevents a decrease in the insulation properties of an insulating film due to polyalkylene glycol and ensures reliability of operation.

〔発明の構成〕[Structure of the invention]

(課題を解決するための手段) 本発明の冷凍サイクルは、圧縮機、熱交換器、膨脹装置
を順次配管で接続し、冷凍機油としてポリアルキレング
リコールを用いた冷凍サイクルにおいて、圧縮機に組み
込まれる電動機の巻線を仕切るための絶縁フィルムを耐
加水分解性の高い絶縁材料で形成して構成される。
(Means for Solving the Problems) The refrigeration cycle of the present invention connects a compressor, a heat exchanger, and an expansion device sequentially through piping, and is incorporated into the compressor in a refrigeration cycle using polyalkylene glycol as refrigeration oil. It is constructed by forming an insulating film to partition the windings of the motor using an insulating material with high hydrolysis resistance.

(実施例) 以下本発明の一実施例を図面につき説明する。(Example) An embodiment of the present invention will be described below with reference to the drawings.

第1図は冷凍サイクルを構成する圧縮機に組み込まれる
電動機の巻線部分1を示し、この巻線部分1のステータ
コイル2は第1巻線3と、第2巻線4と、第1巻線3と
第2巻線4を仕切るための絶縁フィルム5とから構成さ
れている。
FIG. 1 shows a winding section 1 of an electric motor incorporated in a compressor constituting a refrigeration cycle, and a stator coil 2 of this winding section 1 has a first winding 3, a second winding 4, and a first winding. It is composed of an insulating film 5 for partitioning the wire 3 and the second winding 4.

上記絶縁フィルム5は、たとえば第2図に示すようにポ
リエチレンテレフタレートフィルム6とポリフェニレン
サルファイドフィルム7のラミネートフィルムのような
耐加水分解性の高い絶縁材料で構成されている。
The insulating film 5 is made of an insulating material with high hydrolysis resistance, such as a laminate film of a polyethylene terephthalate film 6 and a polyphenylene sulfide film 7, as shown in FIG.

また第1巻線3と第2巻線4の被覆部としてはをポリア
ミドイミド樹脂が用いられている。
Furthermore, polyamide-imide resin is used as the covering portions of the first winding 3 and the second winding 4.

第3図に本発明の電動機の巻線部分と従来品の巻線部分
とをポリアルキレングリコールの冷凍機油に浸漬した絶
縁破壊特性を比較した実験結果を示す。
FIG. 3 shows the results of an experiment comparing the dielectric breakdown characteristics of the winding portion of the motor of the present invention and the winding portion of a conventional motor immersed in polyalkylene glycol refrigerating machine oil.

本発明の電動機の巻線部分にはポリエチレンテレフタレ
ートフィルムとポリフェニレンサルファイドフィルムの
ラミネートフィルムからなる絶縁フィルム、巻線の被覆
部としてはポリアミドイミド樹脂が用いられ、従来品の
電動機の巻線部分にはポリエステルフィルムからなる絶
縁フィルム、巻線の被覆部としてはポリエステル樹脂が
用いられた。
The winding part of the motor of the present invention uses an insulating film made of a laminate film of polyethylene terephthalate film and polyphenylene sulfide film, and the winding covering part uses polyamide-imide resin, whereas the winding part of the conventional motor uses polyester. Polyester resin was used for the insulating film and the winding covering.

実験結果によれば、本発明の電動機の巻線部分の絶縁破
壊電圧は耐久試験後でもほとんど変化しなかったが、従
来品の電動機の巻線部分の絶縁破壊電圧は耐久試験後に
大きく低下した。
According to the experimental results, the dielectric breakdown voltage of the winding portion of the motor of the present invention hardly changed even after the durability test, but the dielectric breakdown voltage of the winding portion of the conventional motor decreased significantly after the durability test.

なお上記実施例では耐加水分解性の高い絶縁材料として
ポリフェニレンサルファイドを用いたが、耐加水分解性
の高い絶縁材料であれば、たとえばポリサルホン、ポリ
エーテルサルホン、ポリイミド、ポリエーテルイミド、
芳香族ポリアミド、ポリアミドイミド、ポリエーテルエ
ーテルケトン、ポリテトラフルオロエチレン、ポリテト
ラフルオロエチレンのコポリマー、ポリふっ化ビニリデ
ン、ポリパラパン酸、ポリアリレート、ポリエチレン2
.6−ナフタレートであってもよく、また場合によって
はこれら絶縁材料のうちの2つをラミネートシたもので
あってもよい。
In the above examples, polyphenylene sulfide was used as an insulating material with high hydrolysis resistance, but any insulating material with high hydrolysis resistance may be used, such as polysulfone, polyethersulfone, polyimide, polyetherimide,
Aromatic polyamide, polyamideimide, polyetheretherketone, polytetrafluoroethylene, copolymer of polytetrafluoroethylene, polyvinylidene fluoride, polyparapanic acid, polyarylate, polyethylene 2
.. It may be 6-naphthalate, or in some cases it may be a laminate of two of these insulating materials.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明によれば、圧縮機に組み込まれ
る電動機の巻線を仕切るための絶縁フィルムを耐加水分
解性の高い絶縁材料で構成したので、この種の圧縮機を
冷凍機油としてポリアルキレングリコールを用いた冷凍
サイクルに組み込んでも、電動機の巻線部分の絶縁破壊
電圧が使用中に低下することがなく、冷凍サイクルの信
頼性が大幅に向上するという効果を奏する。
As described above, according to the present invention, the insulating film for partitioning the windings of the electric motor incorporated in the compressor is made of an insulating material with high hydrolysis resistance. Even when incorporated into a refrigeration cycle using alkylene glycol, the dielectric breakdown voltage of the winding portion of the motor does not decrease during use, and the reliability of the refrigeration cycle is significantly improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明による冷凍サイクルの圧縮機に組み込ま
れる電動機の巻線部分を示す図、第2図は電動機の巻線
を仕切る絶縁フィルムの断面図、第3図は絶縁破壊特性
を示す図である。 1・・・巻線部分、2・・・ステータコイル、3・・・
第1巻線、4・・・第2巻線、5・・・絶縁フィルム。 出願人代理人  佐  藤  −雄 第1図 寂 イ臭 第3図
Figure 1 is a diagram showing the windings of a motor incorporated in the compressor of the refrigeration cycle according to the present invention, Figure 2 is a cross-sectional view of an insulating film that partitions the windings of the motor, and Figure 3 is a diagram showing dielectric breakdown characteristics. It is. 1... Winding part, 2... Stator coil, 3...
First winding, 4... Second winding, 5... Insulating film. Applicant's representative Mr. Sato - Figure 1 - Jakui Omori Figure 3

Claims (2)

【特許請求の範囲】[Claims] 1.圧縮機、熱交換器、膨脹装置を順次配管で接続し、
冷凍機油としてポリアルキレングリコールを用いた冷凍
サイクルにおいて、上記圧縮機に組み込まれる電動機の
巻線を仕切るための絶縁フィルムを耐加水分解性の高い
絶縁材料で形成したことを特徴とする冷凍サイクル。
1. Connect the compressor, heat exchanger, and expansion device in sequence with piping,
A refrigeration cycle using polyalkylene glycol as refrigeration oil, characterized in that an insulating film for partitioning windings of a motor incorporated in the compressor is formed of an insulating material with high hydrolysis resistance.
2.耐加水分解性の高い絶縁材料がポリフェニレンサル
ファイド、ポリサルホン、ポリエーテルサルホン、ポリ
イミド、ポリエーテルイミド、芳香族ポリアミド、ポリ
アミドイミド、ポリエーテルエーテルケトン、ポリテト
ラフルオロエチレン、ポリテトラフルオロエチレンのコ
ポリマー、ポリふっ化ビニリデン、ポリパラパン酸、ポ
リアリレート、ポリエチレン2、6−ナフタレートのう
ちの少なくとも1つを有する材料であることを特徴とす
る請求項1記載の冷凍サイクル。
2. Insulating materials with high hydrolysis resistance include polyphenylene sulfide, polysulfone, polyethersulfone, polyimide, polyetherimide, aromatic polyamide, polyamideimide, polyetheretherketone, polytetrafluoroethylene, polytetrafluoroethylene copolymers, and The refrigeration cycle according to claim 1, characterized in that the material is a material containing at least one of vinylidene fluoride, polyparapanic acid, polyarylate, and polyethylene 2,6-naphthalate.
JP11784289A 1989-05-11 1989-05-11 Refrigerating cycle Pending JPH02299437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11784289A JPH02299437A (en) 1989-05-11 1989-05-11 Refrigerating cycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11784289A JPH02299437A (en) 1989-05-11 1989-05-11 Refrigerating cycle

Publications (1)

Publication Number Publication Date
JPH02299437A true JPH02299437A (en) 1990-12-11

Family

ID=14721618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11784289A Pending JPH02299437A (en) 1989-05-11 1989-05-11 Refrigerating cycle

Country Status (1)

Country Link
JP (1) JPH02299437A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05290628A (en) * 1992-04-06 1993-11-05 Mitsubishi Electric Corp Electrical equipment
JPH0813300A (en) * 1994-06-27 1996-01-16 Goosen:Kk Motor ties
JP2002272042A (en) * 2001-03-05 2002-09-20 Daikin Ind Ltd Rotary compressor and air conditioner equipped with the rotary compressor
JP2002272043A (en) * 2001-03-05 2002-09-20 Daikin Ind Ltd Rotary compressor and air conditioner equipped with the rotary compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05290628A (en) * 1992-04-06 1993-11-05 Mitsubishi Electric Corp Electrical equipment
JPH0813300A (en) * 1994-06-27 1996-01-16 Goosen:Kk Motor ties
JP2002272042A (en) * 2001-03-05 2002-09-20 Daikin Ind Ltd Rotary compressor and air conditioner equipped with the rotary compressor
JP2002272043A (en) * 2001-03-05 2002-09-20 Daikin Ind Ltd Rotary compressor and air conditioner equipped with the rotary compressor

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