JP5152018B2 - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- JP5152018B2 JP5152018B2 JP2009019158A JP2009019158A JP5152018B2 JP 5152018 B2 JP5152018 B2 JP 5152018B2 JP 2009019158 A JP2009019158 A JP 2009019158A JP 2009019158 A JP2009019158 A JP 2009019158A JP 5152018 B2 JP5152018 B2 JP 5152018B2
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- crankshaft
- rotary compressor
- shaft portion
- bearing
- electric element
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Description
本発明は、密閉容器内に電動要素と圧縮要素とを備えてなる、ロータリー式圧縮機の構造に係り、特に前記電動要素を構成するロータに連結される前記圧縮要素を構成するクランク軸に関するものである。 The present invention relates to a structure of a rotary compressor including an electric element and a compression element in an airtight container, and particularly to a crankshaft constituting the compression element connected to a rotor constituting the electric element. It is.
従来のロータリー式圧縮機としては、例えば特許文献１に示されたものがあった。図２および図３は特許文献１に記載された従来のロータリー式圧縮機を示すものである。 図２においてロータリー式圧縮機は、密閉容器１内の上部に電動要素２を、下部に圧縮要素３を配置しており、電動要素２は圧縮要素３を構成するクランク軸４に連結され回転するロータ２ａと、このロータ２ａを回転させる密閉容器１の内周面に固定されたステータ２ｂとで構成される。 As a conventional rotary compressor, for example, there is one disclosed in Patent Document 1. 2 and 3 show a conventional rotary compressor described in Patent Document 1. FIG. In FIG. 2, the rotary compressor has an electric element 2 disposed in the upper part of the sealed container 1 and a compression element 3 disposed in the lower part. The electric element 2 is connected to a crankshaft 4 constituting the compression element 3 and rotates. The rotor 2a and the stator 2b fixed to the inner peripheral surface of the sealed container 1 for rotating the rotor 2a.
圧縮要素３には、環状で中空のシリンダ５と、このシリンダ５の上下端面を挟み込んで閉塞すると共に、クランク軸４に設けられた上軸部４ｅと下軸部４ｂを支承する上軸受６と下軸受７が配置され、閉塞されたシリンダ５内にはクランク軸４の一部でもある偏芯軸４ａに係合するローラ８が設けられ、電動要素２のロータ２ａからの駆動によりシリンダ５内を偏芯して回転する。 The compression element 3 includes an annular hollow cylinder 5 and an upper bearing 6 that supports the upper shaft portion 4e and the lower shaft portion 4b provided on the crankshaft 4 while sandwiching and closing the upper and lower end surfaces of the cylinder 5. A roller 8 that engages with an eccentric shaft 4a that is also a part of the crankshaft 4 is provided in the closed cylinder 5 in which the lower bearing 7 is disposed, and is driven into the cylinder 5 by driving the electric element 2 from the rotor 2a. Rotate eccentrically.
圧縮要素３には更に冷媒圧縮の為に、一端がローラ８に常に接して、シリンダ５内を吸入側（低圧側）と吐出側（高圧側）とに仕切るよう、シリンダ５に設けられた溝を往復運動する板状のブレード１０が設けられ、シリンダ５内に吸入された冷媒が圧縮される構造となっている。 A groove provided in the cylinder 5 so that one end of the compression element 3 is always in contact with the roller 8 and partitions the inside of the cylinder 5 into a suction side (low pressure side) and a discharge side (high pressure side) for further refrigerant compression. A plate-like blade 10 that reciprocates is provided, and the refrigerant sucked into the cylinder 5 is compressed.
また密閉容器１内の底部には潤滑油９が溜められており、クランク軸４に設けられた下軸部４ｂには、下軸受７との摺動部全体に潤滑油９を供給し潤滑をするため給油穴を有した段差部４ｃが図３のように設けられていた。
しかしながら、前記従来のロータリー式圧縮機では、クランク軸４に設けられた下軸部４ｂの給油穴を有した段差部４がエッジ４ｄになっていたため、圧縮要素３での冷媒圧縮の際に下軸部４ｂと、支承をしている下軸受７との摺動部において、支承の支点となり特に大きな荷重がかかる部分がエッジ４ｄとなっているために集中荷重が加わり、摺動部の異常摩耗もしくは焼付きによる製品不良が発生するという問題があった。 However, in the conventional rotary compressor, the stepped portion 4 having the oil supply hole of the lower shaft portion 4b provided on the crankshaft 4 is the edge 4d. In the sliding portion between the shaft portion 4b and the supporting lower bearing 7, the portion that is a supporting point of the bearing and that receives a particularly large load is the edge 4d. Therefore, concentrated load is applied and abnormal wear of the sliding portion occurs. Or there was a problem that product defects occurred due to seizure.
前記従来の課題を解決する為に、本発明のロータリー式圧縮機は、密閉容器内の上部に電動要素を、前記密閉容器内の下部に前記電動要素によって駆動される圧縮要素を配置し、前記電動要素を構成するロータに連結される前記圧縮要素を構成するクランク軸、および前記クランク軸に設けられた上軸部と下軸部を支承する、上軸受と下軸受を有するロータリー式圧縮機において、前記クランク軸の下軸部に設けられた給油穴を有した段差部のエッジにＲ形状を設けたものである。 In order to solve the conventional problem, the rotary compressor according to the present invention has an electric element disposed in an upper part of a sealed container and a compression element driven by the electric element in a lower part of the sealed container, In a rotary compressor having an upper bearing and a lower bearing for supporting a crankshaft constituting the compression element connected to a rotor constituting an electric element, and an upper shaft portion and a lower shaft portion provided on the crankshaft In addition, an R shape is provided at the edge of the step portion having an oil supply hole provided in the lower shaft portion of the crankshaft.
本発明のロータリー式圧縮機は、前記構成を有し、クランク軸の下軸部に設けられた給
油穴を有した段差部のエッジをＲ形状とすることで、圧縮要素での冷媒圧縮の際に下軸部と、支承をしている下軸受との摺動部において、支承の支点となり特に大きな荷重がかかる部分をＲ形状とすることで荷重が分散され、摺動部の異常摩耗もしくは焼付きによる製品不良の発生を抑えることができる。
The rotary compressor according to the present invention has the above-described configuration, and the edge of the stepped portion having the oil supply hole provided in the lower shaft portion of the crankshaft is formed in an R shape so that the refrigerant is compressed by the compression element. In addition, in the sliding part between the lower shaft part and the supporting lower bearing, the part that becomes a fulcrum of the bearing and that receives a particularly large load has an R shape, so that the load is dispersed and abnormal sliding or burning of the sliding part occurs. Occurrence of product defects due to sticking can be suppressed.
以下、本発明の実施の形態について、図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
（実施の形態１）
図１は、本発明の実施の形態１における給油穴を有した段差部の縦断面図、図２は、ロータリー式圧縮機の縦断面図である。
(Embodiment 1)
FIG. 1 is a longitudinal sectional view of a stepped portion having an oil supply hole in Embodiment 1 of the present invention, and FIG. 2 is a longitudinal sectional view of a rotary compressor.
図２に示すように、密閉容器１内の上部に電動要素２を、下部に圧縮要素３を配置しており、電動要素２は圧縮要素３を構成するクランク軸４に連結され回転するロータ２ａと、このロータ２ａを回転させる密閉容器１の内周面に固定されたステータ２ｂとで構成される。 As shown in FIG. 2, the electric element 2 is arranged in the upper part of the sealed container 1 and the compression element 3 is arranged in the lower part. The electric element 2 is connected to a crankshaft 4 constituting the compression element 3 and rotates. And a stator 2b fixed to the inner peripheral surface of the sealed container 1 for rotating the rotor 2a.
圧縮要素３には、環状で中空のシリンダ５と、このシリンダ５の上下端面を挟み込んで閉塞すると共に、クランク軸４に設けられた上軸部４ｅと下軸部４ｂを支承する上軸受６と下軸受７が配置され、閉塞されたシリンダ５内にはクランク軸４の一部でもある偏芯軸４ａに係合するローラ８が設けられ、電動要素２のロータ２ａからの駆動によりシリンダ５内を偏芯して回転する。 The compression element 3 includes an annular hollow cylinder 5 and an upper bearing 6 that supports the upper shaft portion 4e and the lower shaft portion 4b provided on the crankshaft 4 while sandwiching and closing the upper and lower end surfaces of the cylinder 5. A roller 8 that engages with an eccentric shaft 4a that is also a part of the crankshaft 4 is provided in the closed cylinder 5 in which the lower bearing 7 is disposed, and is driven into the cylinder 5 by driving the electric element 2 from the rotor 2a. Rotate eccentrically.
圧縮要素３には更に冷媒圧縮の為に、一端がローラ８に常に接して、シリンダ５内を吸入側（低圧側）と吐出側（高圧側）とに仕切るよう、シリンダ５に設けられた溝を往復運動する板状のブレード１０が設けられ、シリンダ５内に吸入された冷媒が圧縮される構造となっている。 A groove provided in the cylinder 5 so that one end of the compression element 3 is always in contact with the roller 8 and partitions the inside of the cylinder 5 into a suction side (low pressure side) and a discharge side (high pressure side) for further refrigerant compression. A plate-like blade 10 that reciprocates is provided, and the refrigerant sucked into the cylinder 5 is compressed.
また密閉容器１内の底部には潤滑油９が溜められており、クランク軸４に設けられた下軸部４ｂには図１のように、下軸受７との摺動部全体に潤滑油９を供給し潤滑をするため給油穴を有した段差部４ｃが設けられ、給油穴を有した段差部４ｃのエッジをＲ形状とした構造としている。 Lubricating oil 9 is stored at the bottom of the sealed container 1, and the lower shaft portion 4 b provided on the crankshaft 4 has a lubricating oil 9 on the entire sliding portion with the lower bearing 7 as shown in FIG. In order to lubricate and lubricate, a step portion 4c having an oil supply hole is provided, and the edge of the step portion 4c having an oil supply hole has an R shape.
かかる構造によれば、クランク軸４の下軸部４ｂと、支承をしている下軸受７との摺動部において、支承の支点となり特に大きな荷重がかかる部分がＲ形状であるため荷重が分散され、摺動部の異常摩耗もしくは焼付きによる製品不良の発生を抑えることができる。 According to such a structure, in the sliding portion between the lower shaft portion 4b of the crankshaft 4 and the lower bearing 7 that supports the load, the load is dispersed because the portion that becomes a fulcrum of the support and has a particularly large load is R-shaped. Therefore, the occurrence of product defects due to abnormal wear or seizure of the sliding portion can be suppressed.
なお上記、実施の形態の図１の給油穴を有した段差部４ｃは下軸部４ｂであるが、これに限定されるものではなく、上軸側４ｅに設けても同様な作用効果を得ることができる。 In addition, although the level | step-difference part 4c which has the oil supply hole of FIG. 1 of the said embodiment is the lower shaft part 4b, it is not limited to this, Even if it provides in the upper shaft side 4e, the same effect is acquired. be able to.
本発明のロータリー式圧縮機は、軸受により支承されるクランク軸を備える、あらゆる圧縮機に適応が可能である。 The rotary compressor of the present invention can be applied to any compressor having a crankshaft supported by a bearing.
１ 密閉容器
２ 電動要素
２ａ ロータ
２ｂ ステータ
３ 圧縮要素
４ クランク軸
４ａ 偏芯軸
４ｂ 下軸部
４ｃ 給油穴を有する段差部
４ｅ 上軸部
５ シリンダ
６ 上軸受
７ 下軸受
８ ローラ
９ 潤滑油
１０ ブレード
DESCRIPTION OF SYMBOLS 1 Airtight container 2 Electric element 2a Rotor 2b Stator 3 Compression element 4 Crankshaft 4a Eccentric shaft 4b Lower shaft part 4c Step part which has an oil supply hole 4e Upper shaft part 5 Cylinder 6 Upper bearing 7 Lower bearing 8 Roller 9 Lubricating oil 10 Blade
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009019158A JP5152018B2 (en) | 2009-01-30 | 2009-01-30 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009019158A JP5152018B2 (en) | 2009-01-30 | 2009-01-30 | Rotary compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010174770A JP2010174770A (en) | 2010-08-12 |
| JP5152018B2 true JP5152018B2 (en) | 2013-02-27 |
Family
ID=42705978
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009019158A Expired - Fee Related JP5152018B2 (en) | 2009-01-30 | 2009-01-30 | Rotary compressor |
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|---|---|
| JP (1) | JP5152018B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58120897U (en) * | 1982-02-12 | 1983-08-17 | ダイキン工業株式会社 | rotary compressor |
| JP2003003959A (en) * | 2001-06-20 | 2003-01-08 | Matsushita Electric Ind Co Ltd | Compressor |
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- 2009-01-30 JP JP2009019158A patent/JP5152018B2/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| JP2010174770A (en) | 2010-08-12 |
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