JPH0427781A - Sealed compressor - Google Patents
Sealed compressorInfo
- Publication number
- JPH0427781A JPH0427781A JP13343890A JP13343890A JPH0427781A JP H0427781 A JPH0427781 A JP H0427781A JP 13343890 A JP13343890 A JP 13343890A JP 13343890 A JP13343890 A JP 13343890A JP H0427781 A JPH0427781 A JP H0427781A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- section
- refrigerant
- desiccant
- supply device
- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 22
- 239000002274 desiccant Substances 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 28
- 239000010721 machine oil Substances 0.000 claims description 17
- 238000005057 refrigeration Methods 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 10
- 150000001722 carbon compounds Chemical group 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 5
- 239000010696 ester oil Substances 0.000 claims description 3
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical group FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005984 hydrogenation reaction Methods 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 13
- 238000001816 cooling Methods 0.000 abstract description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical group 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 6
- 150000007513 acids Chemical class 0.000 description 5
- 238000010292 electrical insulation Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 2
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- WXGNWUVNYMJENI-UHFFFAOYSA-N 1,1,2,2-tetrafluoroethane Chemical compound FC(F)C(F)F WXGNWUVNYMJENI-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- WCCJDBZJUYKDBF-UHFFFAOYSA-N copper silicon Chemical compound [Si].[Cu] WCCJDBZJUYKDBF-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、冷蔵庫、冷凍庫等に用いる密閉型圧縮機に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hermetic compressor used in refrigerators, freezers, etc.
従来の技術
近年、クロロフルオロカーボン（以下ＣＦＣと称する）
の影響によるオゾン層破壊及び地球の温暖化等の環境問
題が注目されている。このような観点より、冷媒である
ＣＦＣの使用量削減が、極めて重要なテーマとなってき
ている。従来、ＣＦＣとして使用されて来た完全ハロゲ
ン化炭素化合物は、少なくと心水素を１個以上含むハロ
ゲン化炭素化合物に代替化が図られつつある。Prior art In recent years, chlorofluorocarbons (hereinafter referred to as CFCs)
Environmental problems such as ozone layer depletion and global warming due to the effects of environmental pollution are attracting attention. From this perspective, reducing the amount of CFC refrigerant used has become an extremely important theme. The fully halogenated carbon compounds conventionally used as CFCs are being replaced by halogenated carbon compounds containing at least one or more core hydrogen atoms.
さらに具体的には、代表的な冷媒であるジクロロジフル
オロメタン（以下ＣＦＣ−１２と称する）は、ＣＦＣの
代替物質であり、オゾン破壊に対する影響の少ない水素
を２個含むハロゲン化炭素化合物である１、 １．１．
２−テトラフルオロエタン（以下ＨＦＣ１３４ａと称す
る）へ代替化を図るため種々の改善取組みがなされてい
る。More specifically, dichlorodifluoromethane (hereinafter referred to as CFC-12), a typical refrigerant, is a halogenated carbon compound containing two hydrogen atoms, which is an alternative to CFC and has less impact on ozone depletion. , 1.1.
Various improvements have been made to replace 2-tetrafluoroethane (hereinafter referred to as HFC134a).
例えば、１９７８年１０月発行のＤｕＰｏｎｔ社の Ｒ
ｅ５ｅａｒｃｈ Ｄｉｓｃｌｏｓｕｒｅの記載によれ
ば、ＨＦＣ−１３４＆は従来のどのような油とも相溶性
が悪く全ての温度域で二層分離を生じ、唯一クリコール
系油にのみ溶解する。For example, DuPont's R
According to e5earch Disclosure, HFC-134& has poor compatibility with any conventional oil, causing two-layer separation in all temperature ranges, and is only soluble in glycol-based oils.
しかし、その後の研究によりエステル系油にも溶解する
ことが判ってきた０例えば、米国特許４８５１１４４号
においてエステル系とグリコール系の混合した冷凍機油
が冷媒ＨＦＣ−１３４ａに溶解することが示されている
。However, subsequent research has revealed that ester-based oils are also soluble.For example, U.S. Patent No. 4,851,144 shows that refrigeration oil, which is a mixture of ester-based and glycol-based oils, is soluble in the refrigerant HFC-134a. .
第２図は、従来の密閉型圧縮機の断面図である。FIG. 2 is a sectional view of a conventional hermetic compressor.
第２区において１は機械部であり、シャフト２、副軸受
８、軸受４、ピストン５、シリンダー６からなる。前記
、シャフト２、副軸受３、軸受４、ピストン５、シリン
ダー６は圧縮室７を形成している。８は給油装置であり
、給油管９と前記給油管内に位置し粘性ポンプとして働
くバネ１０とから成り立ている。１１は冷媒ＣＦＣ−１
２と冷凍機油の混合液であり給油装置８は混合液１１を
摺動面に供給する。１２はモーター部である。１３は、
モーター部１２に電気を供給するためのターミナル部で
ある。また１４は前記の機械部１やモーター部１２を収
納する金属性の密閉ケーシングである。In the second section, 1 is a mechanical section, which consists of a shaft 2, an auxiliary bearing 8, a bearing 4, a piston 5, and a cylinder 6. The shaft 2, sub-bearing 3, bearing 4, piston 5, and cylinder 6 form a compression chamber 7. Reference numeral 8 denotes an oil supply device, which is composed of an oil supply pipe 9 and a spring 10 located inside the oil supply pipe and functioning as a viscous pump. 11 is refrigerant CFC-1
The oil supply device 8 supplies the mixed liquid 11 to the sliding surface. 12 is a motor section. 13 is
This is a terminal section for supplying electricity to the motor section 12. Further, 14 is a metal sealed casing that houses the mechanical section 1 and the motor section 12.
発明が解決しようとする課題
以上のように構成された密閉型圧縮機において、シャフ
ト２は、モーター部１２の回転力によって回転し、ピス
トン５を動かし、副軸受３、軸受４、及びシリンダー６
によって形成された圧縮室７内の冷媒を圧縮する。圧縮
された冷媒は凝縮器で液化し、ドライヤ内にある乾燥剤
で脱水された後、蒸発器で気化し冷却を行なった援再び
圧縮機に戻ってくる。しかし、凝縮器の後に設置された
乾燥剤での脱水は冷媒に対しては有効であるが、圧縮機
内の冷凍機油に対しては脱水効果がほとんんと無かった
。特に、冷凍機油が親水性の高いエステル系油やクリコ
ール系油ではその傾向が大きくなる。Problems to be Solved by the Invention In the hermetic compressor configured as described above, the shaft 2 is rotated by the rotational force of the motor section 12, moves the piston 5, and moves the sub bearing 3, the bearing 4, and the cylinder 6.
The refrigerant in the compression chamber 7 formed by the refrigerant is compressed. The compressed refrigerant is liquefied in a condenser, dehydrated by a desiccant in a dryer, and then vaporized in an evaporator, cooled, and returned to the compressor. However, although dehydration using a desiccant installed after the condenser is effective for refrigerant, it has little effect on refrigerating machine oil in the compressor. This tendency is particularly strong when the refrigerating machine oil is a highly hydrophilic ester oil or glycol oil.
また、図に示したような圧縮機は、近年省スペース化を
目的として小型化される傾向に有るため放熱が悪くなり
高温で使われることが多くなっている。このため、−船
釣に耐熱性がよいエステル系油やグリコール系油でも、
空気や不純物が共存し高温になると化学反応を起こし冷
凍システムにとって有害な物質を生成する。特にエステ
ル系油は冷凍機油中に残った水分によって加水分解を起
こして酸を生じ、その反応受止じた酸が触媒作用を持ち
１．さらに多量の酸や有害物質を生じさせる（参照文献
：潤滑第２３巻第１号 ｐ３０ 平野、藤原）。In addition, compressors such as the one shown in the figure have recently become smaller in size for the purpose of space saving, so they have poor heat dissipation and are often used at high temperatures. For this reason, even ester-based oils and glycol-based oils that have good heat resistance for boat fishing,
When air and impurities coexist and the temperature reaches high temperatures, a chemical reaction occurs and produces substances that are harmful to the refrigeration system. In particular, ester oils are hydrolyzed by the water remaining in the refrigerating machine oil to produce acids, and the acids that react with them have a catalytic effect.1. Furthermore, large amounts of acids and harmful substances are generated (Reference document: Lubrication Vol. 23, No. 1, p. 30, Hirano, Fujiwara).
そして発生した酸や有害物質は冷凍機油の電気絶縁性を
悪化さる。特に酸は機械部１の摺動面に給油され腐蝕摩
耗を生じ圧縮機の寿命を短くする。The generated acids and harmful substances deteriorate the electrical insulation properties of the refrigerating machine oil. In particular, acid is supplied to the sliding surfaces of the mechanical part 1, causing corrosive wear and shortening the life of the compressor.
また、発生した有害物質の内の重合物は冷凍システムの
配管内に詰まり冷却不良を生じる。In addition, polymers among the generated harmful substances clog the pipes of the refrigeration system, resulting in poor cooling.
もちろん、冷凍機油を事前に浄油機などを使用して脱水
したり冷凍システムの乾燥剤の量を増加させたりして対
応できないことはない、しかし、浄油機による脱水は限
度が有る上、冷凍システム配管の表面に吸着した水分や
モーター部１２のステーターの珪素銅板の密着した隙間
に保持されている水分は除去できない、そして、これら
の除去できない＊分は声ツジ庄蛤烏を１町、でいス？り
ｈに析出する。そのためどうしても冷凍機油中には微量
の水分が残存する。また、冷凍システムの凝縮器の後に
位置する乾燥剤の量を増加させても、冷凍機油から直接
水分を除去できなかった。Of course, it is not impossible to dehydrate the refrigeration oil in advance using an oil purifier or increase the amount of desiccant in the refrigeration system, but dehydration using an oil purifier has its limits. Moisture adsorbed on the surface of the refrigeration system piping and moisture retained in the tight gaps between the silicon copper plates of the stator of the motor section 12 cannot be removed. Yes? It precipitates on the surface. Therefore, a trace amount of water inevitably remains in the refrigerating machine oil. Also, increasing the amount of desiccant located after the condenser of the refrigeration system has not been able to directly remove moisture from the refrigeration oil.
従って、本発明の密閉型圧縮機は上記点に鑑み、少なく
とも１個以上の水素で置換されたハロゲン化炭素化合物
からなる冷媒と前記冷媒に溶解し、分解を起こし酸を発
生するような冷凍機油でも使用できるような密閉型圧縮
機を提供するもの↑ある。Therefore, in view of the above points, the hermetic compressor of the present invention includes a refrigerant made of a halogenated carbon compound substituted with at least one hydrogen, and a refrigerating machine oil that dissolves in the refrigerant and decomposes to generate acid. However, there are some that provide hermetic compressors that can be used in
課題を解決するための手段
上記課題を解決するために本発明の圧縮機は、少なくと
も１個以上の水素で置換されたハロゲン化炭素化合物か
らなる冷媒と前記冷媒に溶解する冷凍機油を封入した密
閉ケーシングと、前記密閉ケーシング内に収納された機
械部と前記機械部を駆動させるモーター部と、前記機械
部に冷凍機油を搬送する給油装置と、この給油装置の入
口部に隣接する位置に形成したフィルター部とから成り
、ｒ ／７”ｌ ＋７ノ＋＋、々−ｓ Ｉ７ｅ ４１１
ｍ ｔｓ 遭ｂ ＋ 、 ＋ ＊、 ｒｒｒ ｖ ＊
Ｘ作用
本発明は上記した構成によって、給油装置の人口部に隣
接する位置に形成したフィルター部に乾燥剤を満たし、
冷凍機油中の水分を直接除去することによって、化学反
応による酸の発生を阻止でき電気絶縁性の悪化や、Ｍ蝕
摩粍や詰まりによる冷却不良をなくすことができる。Means for Solving the Problems In order to solve the above problems, the compressor of the present invention is a hermetically sealed compressor in which a refrigerant made of a halogenated carbon compound substituted with at least one hydrogen and refrigerating machine oil dissolved in the refrigerant are sealed. A casing, a mechanical part housed in the sealed casing, a motor part for driving the mechanical part, an oil supply device for conveying refrigerating machine oil to the mechanical part, and a fuel supply device formed at a position adjacent to an inlet of the oil supply device. Consists of a filter section, r /7"l +7ノ++, -s I7e 411
m ts encounter b + , + *, rrr v *
X action The present invention has the above-described structure, and fills the filter part formed in the position adjacent to the artificial part of the oil supply device with a desiccant,
By directly removing the moisture in the refrigerating machine oil, it is possible to prevent the generation of acid due to chemical reactions, thereby eliminating deterioration of electrical insulation and poor cooling due to M corrosion and clogging.
実施例
以下、本発明の一実施例の圧縮機について、図１図を参
照しながら説明するが、従来例と同じものは、同一番号
を付して説明を省略する。EXAMPLE Hereinafter, a compressor according to an example of the present invention will be described with reference to FIG. 1. Parts that are the same as those of the conventional example will be given the same numbers and the description thereof will be omitted.
１５は給油装置８の入口部に隣接する位置に形成された
フィルター部であり、１６はその中にパンチメタルやメ
ツシュによって固定されている乾燥剤である。乾燥剤と
しては耐熱性が高く、高温でも水分吸着力の高いモレキ
ュラー＝シーブス（ユニオン＝カーバイト社の商標）が
適している。Reference numeral 15 denotes a filter portion formed adjacent to the inlet portion of the oil supply device 8, and reference numeral 16 denotes a desiccant fixed therein by punch metal or mesh. As a desiccant, Molecular Thieves (trademark of Union Carbide Co.), which has high heat resistance and high water adsorption power even at high temperatures, is suitable.
フィルター部１５の下方の側面には多数の貫通穴が設け
られ冷凍機油が内部に入り易くなっている。A large number of through holes are provided in the lower side surface of the filter section 15, so that refrigerating machine oil can easily enter the inside.
以上のように構成された密閉型圧縮機についてその動作
を説明する。The operation of the hermetic compressor configured as above will be explained.
シャフト２は、モーター部１２の回転力によって回転し
、ピストン５を動かし、副軸受３、軸受４、及びシリン
ダー６によって形成された圧縮室７内の冷媒を圧縮する
。圧縮された冷媒は冷凍システムで冷却を行ない再び圧
縮機に戻ってくる。The shaft 2 is rotated by the rotational force of the motor section 12, moves the piston 5, and compresses the refrigerant in the compression chamber 7 formed by the sub-bearing 3, the bearing 4, and the cylinder 6. The compressed refrigerant is cooled in the refrigeration system and then returned to the compressor.
この時、冷媒ＲＦＣ−１３４＆と冷凍機油の混合液が潤
滑のため給油装置８を通じて機械部に供給される。フィ
ルター部１５は給油装置８の人口部に隣接するように設
けられ、その下方の側面には多数の貫通穴が設けられて
いる。そのため水分を含んだ冷凍機油は確実に乾燥剤１
６の中を通過しその含有水分が除去される。At this time, a liquid mixture of refrigerant RFC-134& and refrigerating machine oil is supplied to the mechanical part through the oil supply device 8 for lubrication. The filter part 15 is provided adjacent to the artificial part of the fuel supply device 8, and a number of through holes are provided in the lower side surface thereof. Therefore, refrigerating machine oil containing moisture is definitely a desiccant.
6, and the moisture contained therein is removed.
すなわち、化学反応による酸の発生を阻止でき、その酸
による冷凍機油の電気絶縁性の悪化がなくなる。また酸
が機械部１の摺動面に給油さなくなるので腐蝕摩耗を生
じ圧縮機の寿命が短かくなる事が無い。また、発生した
酸での触媒作用により生じる有害物質の重合物が冷凍シ
ステムの配管内に詰まり冷却不良を生じる事もなくなる
。That is, generation of acid due to chemical reactions can be prevented, and deterioration of the electrical insulation properties of the refrigerating machine oil due to the acid is eliminated. Furthermore, since acid is no longer supplied to the sliding surfaces of the mechanical part 1, corrosive wear will not occur and the life of the compressor will not be shortened. In addition, polymerization of harmful substances produced by the catalytic action of the generated acid will not clog the piping of the refrigeration system and cause cooling failure.
発明の効果
以上のように本発明の圧縮機は、冷媒と冷凍機油を封入
した密閉ケーシングと、前記密閉ケーシング内に収納さ
れた機械部と前記機械部を駆動させるモーター部と、前
記機械部に冷凍機油を搬送する給油装置と、この給油装
置の人口部に隣接する位置に形成したフィルター部とか
ら成り、このフィルター部を乾燥剤で満たしたものであ
り、多量の酸や有害物質を生じさせることが無くなり電
気絶縁性が高く、腐蝕摩耗が生じず、冷却不良の発生を
なくすることができる。Effects of the Invention As described above, the compressor of the present invention includes a sealed casing in which refrigerant and refrigeration oil are sealed, a mechanical part housed in the sealed casing, a motor part that drives the mechanical part, and a motor part that drives the mechanical part. It consists of a refrigerating machine oil supply device that conveys refrigerating machine oil, and a filter section formed adjacent to the artificial section of the refrigerating machine oil supply device.This filter section is filled with a desiccant, which generates large amounts of acids and harmful substances. The electrical insulation is high, corrosive wear does not occur, and the occurrence of cooling failures can be eliminated.
第１図は本発明の一実施例における圧縮機の断面図、第
２図は従来の圧縮機の断面図である。
１・・・機械部、８・・・給油装置、１２・モーター部
、１５・・・フィルター部、１６・・乾燥剤。
代理人の氏名 弁理士 粟野重孝 はか１名第
図
第
図
◇FIG. 1 is a sectional view of a compressor according to an embodiment of the present invention, and FIG. 2 is a sectional view of a conventional compressor. DESCRIPTION OF SYMBOLS 1... Mechanical part, 8... Oil supply device, 12... Motor part, 15... Filter part, 16... Desiccant. Name of agent: Patent attorney Shigetaka Awano
Claims (2)
化炭素化合物からなる冷媒と前記冷媒に溶解する冷凍機
油を封入した密閉ケーシングと、前記密閉ケーシング内
に収納された機械部と前記機械部を駆動させるモーター
部と、前記機械部に冷凍機油を搬送する給油装置と、こ
の給油装置の入口部に隣接する位置に形成したフィルタ
ー部とから成り、このフィルター部に乾燥剤を満たした
ことを特徴とする密閉型圧縮機。(1) A sealed casing containing a refrigerant made of a halogenated carbon compound substituted with at least one hydrogen and refrigeration oil dissolved in the refrigerant, a mechanical part housed in the sealed casing, and a mechanical part. It consists of a driving motor section, an oil supply device that conveys refrigerating machine oil to the mechanical section, and a filter section formed at a position adjacent to the inlet of the oil supply device, and the filter section is filled with a desiccant. Hermetic compressor.
あり、冷凍機油がエステル系油とグリコール系油であり
、乾燥剤がモレキュラー＝シーブス（ユニオン＝カーバ
イト社の商標）であることを特徴とする請求項（１）記
載の密閉型圧縮機。(2) The refrigerant is 1,1,1,2-tetrafluoroethane, the refrigeration oil is ester oil and glycol oil, and the desiccant is Molecular Thieves (trademark of Union Carbide). The hermetic compressor according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13343890A JPH0427781A (en) | 1990-05-23 | 1990-05-23 | Sealed compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13343890A JPH0427781A (en) | 1990-05-23 | 1990-05-23 | Sealed compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0427781A true JPH0427781A (en) | 1992-01-30 |
Family
ID=15104775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13343890A Pending JPH0427781A (en) | 1990-05-23 | 1990-05-23 | Sealed compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0427781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721066A3 (en) * | 1994-12-09 | 1998-02-11 | Hansa Metallwerke Ag | Piston compressor for refrigeration systems, in particular for air-conditioning systems |
-
1990
- 1990-05-23 JP JP13343890A patent/JPH0427781A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721066A3 (en) * | 1994-12-09 | 1998-02-11 | Hansa Metallwerke Ag | Piston compressor for refrigeration systems, in particular for air-conditioning systems |
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