JP6023970B2 - Hermetic compressor - Google Patents
Hermetic compressor Download PDFInfo
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- JP6023970B2 JP6023970B2 JP2012087097A JP2012087097A JP6023970B2 JP 6023970 B2 JP6023970 B2 JP 6023970B2 JP 2012087097 A JP2012087097 A JP 2012087097A JP 2012087097 A JP2012087097 A JP 2012087097A JP 6023970 B2 JP6023970 B2 JP 6023970B2
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- crankshaft
- oil
- cylinder
- compressor
- end plate
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- 239000003507 refrigerant Substances 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 230000006870 function Effects 0.000 claims 1
- 230000008450 motivation Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
Description
本発明は、冷暖房空調装置や冷蔵庫等の冷却装置、あるいはヒートポンプ式の給湯装置等に用いられる密閉型圧縮機に関するものである。 The present invention relates to a hermetic compressor used in a cooling device such as an air conditioning / air conditioning device or a refrigerator, a heat pump type hot water supply device, or the like.
従来、ロータリ型の圧縮機では図４に示すように、密閉容器１０１の内部に圧縮機構１０２を駆動する電動機１１０が固定されこの電動機に圧縮機構１０２を駆動するクランク軸１０３が結合されている。圧縮機構１０２はクランク軸１０３によって駆動されるローラ１０４と、ローラ１０４を収納する円筒状気筒であるシリンダ１０５と、ローラ１０４に当接してシリンダ１０５内を仕切る仕切り板１０６、およびシリンダ１０５の両端面を保持する端板により構成されている。 Conventionally, in a rotary type compressor, as shown in FIG. 4, an electric motor 110 that drives a compression mechanism 102 is fixed inside an airtight container 101, and a crankshaft 103 that drives the compression mechanism 102 is coupled to the electric motor. The compression mechanism 102 includes a roller 104 driven by a crankshaft 103, a cylinder 105 that is a cylindrical cylinder that houses the roller 104, a partition plate 106 that abuts the roller 104 and partitions the inside of the cylinder 105, and both end surfaces of the cylinder 105 It is comprised by the end plate which hold | maintains.
端板は主端板１０７及び補助端板１０８からなり、クランク軸１０３を保持しかつ軸受けとしての機能も兼ね圧縮機構をはさみ込むように配設され、主端板１０７の外周で密閉容器１０１に溶接固定されている。補助端板１０８には吐出穴１０９が具備され、圧縮された冷媒ガスが密閉容器１０１内に放出される（例えば、特許文献１参照）。 The end plate includes a main end plate 107 and an auxiliary end plate 108. The end plate is disposed so as to hold the crankshaft 103 and also serve as a bearing so as to sandwich a compression mechanism. It is fixed by welding. The auxiliary end plate 108 is provided with a discharge hole 109, and the compressed refrigerant gas is discharged into the sealed container 101 (see, for example, Patent Document 1).
前記従来の構成においては、クランク軸の偏心軸とローラの内径部分の摺動面を潤滑するためのオイルは、クランク軸の偏心軸に設けられたオイル穴とオイル溝から供給される。また、このオイルはローラ内径と偏心軸の隙間が満たされると、主端板に設けられた主軸受側に供給され主軸受の潤滑にも用いられている。 In the conventional configuration, oil for lubricating the eccentric shaft of the crankshaft and the sliding surface of the inner diameter portion of the roller is supplied from an oil hole and an oil groove provided in the eccentric shaft of the crankshaft. Further, when the gap between the roller inner diameter and the eccentric shaft is filled, this oil is supplied to the main bearing side provided on the main end plate and used for lubricating the main bearing.
しかしながら、インバータ等で低速運転されている時などでは、オイルに作用する遠心力が小さく、クランク軸の偏心軸のオイル穴から放出されるオイルは微量であるため、主軸受へのオイル供給が不足しがちで、良好な潤滑状態を得るにために十分なオイル量を確保することが困難な状況となっている。 However, when the inverter is operated at low speed, etc., the centrifugal force acting on the oil is small and the amount of oil released from the oil hole of the eccentric shaft of the crankshaft is very small, so the oil supply to the main bearing is insufficient. Therefore, it is difficult to secure a sufficient amount of oil to obtain a good lubrication state.
本発明は、前記従来の課題を解決するもので、低速運転時にも主軸受に十分なオイルを供給し高い信頼性を有する密閉型圧縮機を提供することを目的とする。 An object of the present invention is to solve the above-described conventional problems, and to provide a hermetic compressor that supplies sufficient oil to a main bearing even during low-speed operation and has high reliability.
上記従来の課題を解決するために本発明の密閉型圧縮機は、密閉容器内に、電動機と、前記電動機によって駆動されるクランク軸と、圧縮機講とを備え、前記圧縮機講は、前記クランク軸にて駆動されるローラ、前記ローラを収納するシリンダ、前記シリンダと前記ローラに当接し、前記シリンダ内を仕切る仕切り板、軸受け機能を有し、上方側から前記クランク軸と前記シリンダとを保持する主端板、下方側から前記クランク軸と前記シリンダとを保持する補助端板にて構成され、インバータ運転を行う密閉型圧縮機において、前記クランク軸の偏心軸の、前記主端板と前記補助端板との間には、オイル溝と前記オイル溝にオイルを供給するオイル穴とが設けられており、前記オイル溝は、断面積が前記クランク軸の軸方向上方に向かって大きくなるように形成されており、かつ、前記オイル溝の最小断面積は、前記オイル穴の断面積より小さいことを特徴とするクランク軸の偏心軸に設けられたオイル溝の深さが、クランク軸の軸方向上方に向かって深くなる構成としたものである。 In order to solve the above-described conventional problems, a hermetic compressor of the present invention includes an electric motor, a crankshaft driven by the electric motor, and a compressor class in a hermetic container. A roller driven by a crankshaft, a cylinder that houses the roller, a partition plate that abuts the cylinder and the roller and partitions the inside of the cylinder, and has a bearing function, and the crankshaft and the cylinder are connected from above. A main end plate to be held, an auxiliary end plate to hold the crankshaft and the cylinder from the lower side, and in a hermetic compressor that performs inverter operation, the main end plate of the eccentric shaft of the crankshaft An oil groove and an oil hole for supplying oil to the oil groove are provided between the auxiliary end plates, and the oil groove has a cross-sectional area that extends upward in the axial direction of the crankshaft. The depth of the oil groove provided on the eccentric shaft of the crankshaft is such that the minimum cross-sectional area of the oil groove is smaller than the cross-sectional area of the oil hole. In this configuration, the shaft becomes deeper upward in the axial direction of the shaft .
これによって、クランク軸の偏心軸のオイル穴から放出されたオイルは、主端板がある上方に向かって流れやすくなり、主端板へのオイル供給量が増加する。なお、凝縮圧力が高く冷媒密度が高い代替冷媒や自然冷媒では、軸受負荷がより大きくなるため、主端板へのオイル供給が増える効果は更に顕著に現れる。 As a result, the oil released from the oil hole of the eccentric shaft of the crankshaft becomes easy to flow upward where the main end plate is located, and the amount of oil supplied to the main end plate increases. In the case of an alternative refrigerant or a natural refrigerant having a high condensing pressure and a high refrigerant density, the bearing load becomes larger, so that the effect of increasing the oil supply to the main end plate is more remarkable.
本発明の密閉型圧縮機により、インバータ運転下での低速運転時においても主端板へのオイル供給が促進されて高い信頼性を有する密閉型圧縮機を提供することができる。 According to the hermetic compressor of the present invention, it is possible to provide a hermetic compressor having high reliability by promoting oil supply to the main end plate even during low-speed operation under inverter operation.
第１の発明は、密閉容器内に、電動機と、前記電動機によって駆動されるクランク軸と、圧縮機講とを備え、前記圧縮機講は、前記クランク軸にて駆動されるローラ、前記ローラを収納するシリンダ、前記シリンダと前記ローラに当接し、前記シリンダ内を仕切る仕切り板、軸受け機能を有し、上方側から前記クランク軸と前記シリンダとを保持する主端板、下方側から前記クランク軸と前記シリンダとを保持する補助端板にて構成され、インバータ運転を行う密閉型圧縮機において、前記クランク軸の偏心軸の、前記主端板と前記補助端板との間には、オイル溝と前記オイル溝にオイルを供給するオイル穴とが設けられており、前記オイル溝は、断面積が前記クランク軸の軸方向上方に向かって大きくなるように形成されており、かつ、前記オイル溝の最小断面積は、前記オイル穴の断面積より小さいことを特徴とする密閉型圧縮機である。これにより、インバータ運転下での低速運転時においても主端板へのオイル供給が促進される。 A first aspect of the present invention is in a sealed container, and electric motive, the comprising: a crankshaft driven by an electric motor, and a compressor lecture, the compressor lectures, the roller driven by the crankshaft, the roller housing the cylinder, said cylinder and abutting said roller, a partition plate for partitioning the inside of said cylinder, has a bearing function, a main end plate for holding said cylinder and said crankshaft from the upper side, the crank from the lower side It is constituted by the auxiliary end plate for holding said the shaft cylinder, the hermetic compressor performing inverter operation, the eccentric shaft of the crankshaft, between the main end plate and the auxiliary end plate, oil A groove and an oil hole for supplying oil to the oil groove, the oil groove being formed so that a cross-sectional area increases upward in the axial direction of the crankshaft; Minimum cross-sectional area of the oil groove is a hermetic compressor and is smaller than the cross-sectional area of the oil hole. As a result, oil supply to the main end plate is promoted even during low-speed operation under inverter operation .
また、これにより、溝の下側が絞られている状態となるため、オイル穴から放出されたオイルは下側へ流れるより上側へ持ち上がる方が多くなり主端板側へよりオイルが供給されやすくなる。 Also, more this, since a state in which the lower side is narrowed groove, the oil released from the oil holes easier oil is supplied to the person who raised upward many become main end plate side of the flow to the lower side Become.
第２の発明は、特に第１の発明において、前記圧縮機講にて、圧縮されるガスが、塩素を含まない代替冷媒である。これにより、主端板へのオイル供給が増える効果が更に顕著に現れる。 A second invention is, in particular in the first invention, in the compressor lectures, gas to be compressed, an alternative refrigerant containing no chlorine. As a result, the effect of increasing the oil supply to the main end plate appears more remarkably.
第３の発明は、特に第１の発明において、前記圧縮機講にて、圧縮されるガスが、二酸化炭素などの自然冷媒である。これにより、主端板へのオイル供給が増える効果が更に顕著に現れる。 In a third aspect of the invention, particularly in the first aspect, the gas to be compressed in the compressor course is a natural refrigerant such as carbon dioxide. As a result, the effect of increasing the oil supply to the main end plate appears more remarkably.
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。なお、この実施の形態によって本発明が限定されるものではない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
（実施の形態１）
図１に示すように、ロータリ型の密閉型圧縮機では、密閉容器１の内部に圧縮機構２を駆動する電動機３の固定子４が固定され、この電動機３の回転子５に圧縮機構２を駆動するクランク軸６が結合されている。
(Embodiment 1)
As shown in FIG. 1, in a rotary type hermetic compressor, a stator 4 of an electric motor 3 that drives a compression mechanism 2 is fixed inside a hermetic container 1, and the compression mechanism 2 is attached to a rotor 5 of the electric motor 3. A driving crankshaft 6 is coupled.
圧縮機構２は、クランク軸６によって駆動されるローラ７と、円筒状気筒であるシリンダ８と、ローラ７に当接してシリンダ８内を仕切る仕切り板９およびシリンダ８の両端面を保持する端板にて構成されている。ここで、端板は、クランク軸６を保持する軸受けも兼ねる主端板１０と補助端板１１とにより、上下から挟み込むように配設され、主端板１０の外周で、密閉容器１に溶接固定されている。 The compression mechanism 2 includes a roller 7 driven by a crankshaft 6, a cylinder 8 that is a cylindrical cylinder, a partition plate 9 that contacts the roller 7 and partitions the inside of the cylinder 8, and an end plate that holds both end faces of the cylinder 8. It is composed of. Here, the end plate is disposed so as to be sandwiched from above and below by the main end plate 10 also serving as a bearing for holding the crankshaft 6 and the auxiliary end plate 11, and is welded to the sealed container 1 on the outer periphery of the main end plate 10. It is fixed.
図２および図３は、本発明の実施の形態１における密閉型圧縮機の要部断面図である。
クランク軸６の偏心軸にはオイル供給穴６ａとオイル溝６ｂが設けてあり、オイル供給穴６ａから放出されたオイルはオイル溝６ｂを通って上下方向に流れていく。この時、オイル溝６ｂは上方に向かって深さが深くなっているので、より上方に向かって流れやすい構成となっているため、主端板１０にオイルが供給されやすくなる。また、オイル溝６ｂの最小断面積が、オイル供給穴６ａの面積より小さくなっていれば、オイル穴から放出されたオイルは、下側へ流れるより上側へ持ち上がる方が多くなり、より主端板側へよりオイルが供給されやすくなる。
2 and 3 are cross-sectional views of main parts of the hermetic compressor according to the first embodiment of the present invention.
The eccentric shaft of the crankshaft 6 is provided with an oil supply hole 6a and an oil groove 6b, and the oil discharged from the oil supply hole 6a flows in the vertical direction through the oil groove 6b. At this time, since the depth of the oil groove 6b is increased upward, the oil groove 6b is configured to easily flow upward, so that oil is easily supplied to the main end plate 10 . Further, if the minimum cross-sectional area of the oil groove 6b is smaller than the area of the oil supply hole 6a, the oil discharged from the oil hole tends to be lifted upward rather than flowing downward, and more main end plate. Oil is more easily supplied to the side.
これにより、インバータ運転下での低速運転時においても、主端板へのオイル供給が促進されて、高い信頼性を有する密閉型圧縮機を提供することができる。 As a result, even during low-speed operation under inverter operation, oil supply to the main end plate is promoted, and a hermetic compressor having high reliability can be provided.
以上のように、本発明にかかる密閉型圧縮機は、圧縮機の高効率を達成することにより、サイクル全体の効率を向上させることで、ＨＦＣ系冷媒、ＨＣＦＣ系冷媒および二酸化炭素を用いた空調用圧縮機やヒートポンプ式給湯機用圧縮機などの用途に適用できるため、省エネルギーの観点からも実用を期待できる。 As described above, the hermetic compressor according to the present invention improves the efficiency of the entire cycle by achieving high efficiency of the compressor, and thus uses an HFC refrigerant, an HCFC refrigerant, and carbon dioxide. Therefore, it can be used practically from the viewpoint of energy saving.
１ 密閉容器
２ 圧縮機構
３ 電動機
４ 固定子
５ 回転子
６ クランク軸
６ａ オイル供給穴
６ｂ オイル溝
７ ローラ
８ シリンダ
１０ 主端板
１１ 補助端板
DESCRIPTION OF SYMBOLS 1 Airtight container 2 Compression mechanism 3 Electric motor 4 Stator 5 Rotor 6 Crankshaft 6a Oil supply hole 6b Oil groove 7 Roller 8 Cylinder 10 Main end plate
11 Auxiliary end plate
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012087097A JP6023970B2 (en) | 2012-04-06 | 2012-04-06 | Hermetic compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012087097A JP6023970B2 (en) | 2012-04-06 | 2012-04-06 | Hermetic compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013217246A JP2013217246A (en) | 2013-10-24 |
| JP6023970B2 true JP6023970B2 (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012087097A Expired - Fee Related JP6023970B2 (en) | 2012-04-06 | 2012-04-06 | Hermetic compressor |
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| Country | Link |
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| JP (1) | JP6023970B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03246392A (en) * | 1990-02-23 | 1991-11-01 | Sanyo Electric Co Ltd | Multiple cylinder rotary compressor |
| JPH0727127A (en) * | 1993-07-13 | 1995-01-27 | Nissan Motor Co Ltd | Crank lubricating device for engine |
| JP3948869B2 (en) * | 1999-11-26 | 2007-07-25 | 松下電器産業株式会社 | Sealed multi-cylinder rotary compressor |
| JP2010031732A (en) * | 2008-07-29 | 2010-02-12 | Panasonic Corp | Rotary compressor |
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2012
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| JP2013217246A (en) | 2013-10-24 |
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