JP2011089482A - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- JP2011089482A JP2011089482A JP2009244004A JP2009244004A JP2011089482A JP 2011089482 A JP2011089482 A JP 2011089482A JP 2009244004 A JP2009244004 A JP 2009244004A JP 2009244004 A JP2009244004 A JP 2009244004A JP 2011089482 A JP2011089482 A JP 2011089482A
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Abstract
Description
本発明は、シリンダにシリンダ室を形成し、該シリンダ室に、駆動軸の偏心部の偏心回転に伴って回転するローラを内装すると共に、前記シリンダ室を圧縮室と吸入室とに区画するブレードが、前記ローラの偏芯回転に伴い、前記シリンダに形成されているブレード摺動溝を摺動可能に内装したロータリ圧縮機に関し、特にシリンダのブレード摺動溝部付近の形状を改良したロータリ圧縮機に関するものである。 According to the present invention, a cylinder chamber is formed in a cylinder, and a roller that rotates with the eccentric rotation of an eccentric portion of a drive shaft is provided in the cylinder chamber, and the blade that partitions the cylinder chamber into a compression chamber and a suction chamber The present invention relates to a rotary compressor in which a blade sliding groove formed in the cylinder is slidably provided along with the eccentric rotation of the roller, and more particularly, a rotary compressor having an improved shape near the blade sliding groove portion of the cylinder It is about.
従来のロータリ圧縮機は、図6で示すように、密閉ケーシング1に内装されるシリンダ2にシリンダ室21を形成し、このシリンダ室21にローラ3を回転可能に内装すると共に、該ローラ3に駆動軸4の偏心部41を挿入させて、この偏心部41の回転によって前記ローラ3を前記シリンダ室21内で偏心回転させるようになす一方、前記シリンダ2に径方向に延びるブレード摺動溝22を形成し、該摺動溝22にその背面側に配設したばね6により常時前記ローラ3の外周面に圧接されるブレード5を摺動可能に設け、このブレード5により前記シリンダ室21を、吐出ポート23が開口する圧縮室と吸入ポート24が開口する吸入室とに区画している。 As shown in FIG. 6, the conventional rotary compressor has a cylinder chamber 21 formed in a cylinder 2 housed in a hermetic casing 1, and a roller 3 is rotatably housed in the cylinder chamber 21. The eccentric part 41 of the drive shaft 4 is inserted, and the rotation of the eccentric part 41 causes the roller 3 to rotate eccentrically in the cylinder chamber 21, while the blade sliding groove 22 extending radially in the cylinder 2. The blade 5 is slidably provided on the outer periphery of the roller 3 by a spring 6 disposed on the back side of the sliding groove 22, and the cylinder chamber 21 is formed by the blade 5. A discharge chamber 23 is divided into a compression chamber and a suction port 24 is opened.
そして、図8に示すように、液圧縮運転によるシリンダ室内での異常な圧力上昇を防止するため、ブレード5、シリンダ2、ローラ3で囲まれる空間と吐出ポート23が連通するように、ブレード摺動溝22のシリンダ内径側の圧縮室側の面取り形状を吐出ポートに架かるまで大きくしていた。 Then, as shown in FIG. 8, in order to prevent an abnormal pressure increase in the cylinder chamber due to the liquid compression operation, the blade slide is made so that the discharge port 23 communicates with the space surrounded by the blade 5, the cylinder 2, and the roller 3. The chamfered shape on the compression chamber side on the cylinder inner diameter side of the dynamic groove 22 was increased until it was put on the discharge port.
このようなロータリ圧縮機においては、圧縮完了時にブレード5、シリンダ2、ローラ3で囲まれる空間に残存した高圧冷媒気体が、続くローラ3回転時に圧縮室X側に戻り、再圧縮運動をすることによる性能の低下を引き起こしている。 In such a rotary compressor, the high-pressure refrigerant gas remaining in the space surrounded by the blade 5, the cylinder 2, and the roller 3 at the completion of compression returns to the compression chamber X side during the subsequent rotation of the roller 3 and recompresses. Is causing performance degradation.
前記従来のロータリ圧縮機では、液圧縮運転を防止するために、ブレード5、シリンダ2、ローラ3で囲まれる空間と吐出ポート23が連通するように、ブレード摺動溝22のシリンダ2内径側の圧縮室X側の面取り形状Aを吐出ポート23に架かるまで大きく施しており、圧縮完了時、前記空間内に圧縮済みの冷媒気体が残存するために、高圧冷媒気体が再び圧縮室側に戻り、再圧縮運動による性能低下を引き起こしていた。 In the conventional rotary compressor, in order to prevent the liquid compression operation, the space surrounded by the blade 5, the cylinder 2, and the roller 3 and the discharge port 23 communicate with each other on the inner diameter side of the cylinder 2 of the blade sliding groove 22. The chamfered shape A on the compression chamber X side is greatly applied until it extends over the discharge port 23. When the compression is completed, the compressed refrigerant gas remains in the space, so that the high-pressure refrigerant gas returns to the compression chamber side again, It was causing performance degradation due to recompression motion.
本発明は、上記従来の課題を解決するもので、再圧縮体積を縮小させることで、ロータリ圧縮機の性能向上を実現することを目的とする。 This invention solves the said conventional subject, and it aims at implement | achieving the performance improvement of a rotary compressor by reducing a recompression volume.
上記課題を解決するために、本発明の請求項1記載の発明は、シリンダにシリンダ室を形成し、該シリンダ室に、駆動軸の偏心部の偏心回転に伴って回転するローラを内装すると共に、前記シリンダ室を圧縮室と吸入室とに区画するブレードが、前記ローラの偏芯回転に伴い、前記シリンダに形成されているブレード摺動溝を摺動可能に内装したロータリ圧縮機において、シリンダ内径の圧縮室側には極めて微小な面取りを施しながら、ブレー
ド、シリンダ、ローラで囲まれる空間と吐出ポートを連通させる切欠き部位をシリンダ面取りと吐出ポート間に設けることで、液圧縮運転を防止しながら、前記空間容積を縮小したロータリ圧縮機である。
In order to solve the above-mentioned problems, according to a first aspect of the present invention, a cylinder chamber is formed in a cylinder, and a roller that rotates with the eccentric rotation of the eccentric portion of the drive shaft is provided in the cylinder chamber. A rotary compressor in which a blade that divides the cylinder chamber into a compression chamber and a suction chamber is slidably mounted in a blade sliding groove formed in the cylinder as the roller rotates eccentrically. Liquid compression operation is prevented by providing a notched part between the cylinder chamfer and the discharge port that allows communication between the space surrounded by the blade, cylinder, and roller and the discharge port, while providing a very small chamfer on the compression chamber side of the inner diameter. However, the rotary compressor has a reduced space volume.
これによって、再圧縮体積を減少させることができ、前記課題の解決による圧縮機の性能向上を実現する。 Thereby, the recompression volume can be reduced, and the performance of the compressor can be improved by solving the above-mentioned problems.
本発明のロータリ圧縮機は、再圧縮体積の縮小により、ロータリ圧縮機の性能向上を実現することを目的とする。 The purpose of the rotary compressor of the present invention is to improve the performance of the rotary compressor by reducing the recompression volume.
第1の発明は、シリンダにシリンダ室を形成し、該シリンダ室に、駆動軸の偏心部の偏心回転に伴って回転するローラを内装すると共に、シリンダ室を圧縮室と吸入室とに区画するブレードが、ローラの偏芯回転に伴い、シリンダに形成されているブレード摺動溝を摺動可能に内装したロータリ圧縮機において、シリンダ内径の圧縮室側に微小な面取りを施し、ブレード、シリンダ、ローラで囲まれる空間と吐出ポートを連通させる切欠き部位をシリンダ面取りと吐出ポート間に設けることで、前記空間容積、すなわち再圧縮体積を縮小し、ロータリ圧縮機の性能向上を実現させることができる。 According to a first aspect of the present invention, a cylinder chamber is formed in a cylinder, and a roller that rotates in accordance with the eccentric rotation of the eccentric portion of the drive shaft is provided in the cylinder chamber, and the cylinder chamber is divided into a compression chamber and a suction chamber. In the rotary compressor in which the blade is slidably mounted in the blade sliding groove formed in the cylinder in accordance with the eccentric rotation of the roller, the cylinder, the cylinder, By providing a notch portion between the cylinder chamfer and the discharge port so that the space surrounded by the roller and the discharge port communicate with each other, the space volume, that is, the recompression volume can be reduced, and the performance of the rotary compressor can be improved. .
第2の発明は、第一の発明のロータリ圧縮機に用いる冷媒にHFC32とHFC125の混合冷媒を用いたロータリ圧縮機であって、第1の発明と同様の効果が得られる。 The second invention is a rotary compressor using a mixed refrigerant of HFC32 and HFC125 as a refrigerant used in the rotary compressor of the first invention, and the same effect as the first invention can be obtained.
第3の発明は、第一の発明のロータリ圧縮機に用いる冷媒に二酸化炭素やアンモニア、ヘリウム等の自然冷媒を用いたロータリ圧縮機であって、第1の発明と同様の効果が得られる。 The third invention is a rotary compressor using a natural refrigerant such as carbon dioxide, ammonia, helium or the like as the refrigerant used in the rotary compressor of the first invention, and the same effect as in the first invention can be obtained.
第4の発明は第1乃至第3の発明の切欠き部の断面形状を図4に示すように、直線状にすることにより、第一の発明と同様の効果が得られる。 In the fourth invention, the same effect as that of the first invention can be obtained by making the cross-sectional shape of the notch portion of the first to third inventions linear as shown in FIG.
第5の発明は第1乃至第3の発明の切欠き部の断面形状を図5に示すように、曲線を含む形状にすることにより、第一の発明と同様の効果が得られる。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、以下に記載する実施の形態により本発明が限定されるものではない。 In the fifth aspect of the invention, the same effect as that of the first aspect of the invention can be obtained by making the cross-sectional shape of the notch portion of the first to third aspects into a shape including a curve as shown in FIG. Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by embodiment described below.
(実施の形態1)
図1は本発明第1の実施の形態におけるロータリ圧縮機の模式図である。図1において圧縮機は、密閉ケーシング1に内装されるシリンダ2にシリンダ室21を形成し、このシ
リンダ室21にローラ3を回転可能に内装すると共に、該ローラ3にモータから延びる駆動軸4の偏心部41を挿入させて、この偏心部41の偏心回転によってローラ3を前記シリンダ室21内で偏心回転させるようになす一方、シリンダ2に径方向に延びるブレード摺動溝22を形成して、該摺動溝22に、その背面側に配設したばね6により常時ローラ3の外周面に圧接されるブレード5を摺動可能に設けて、このブレード5によりシリンダ室21の内部を吐出ポート23が開口する圧縮室と吸入ポート24が開口する吸入室とに区画している。
(Embodiment 1)
FIG. 1 is a schematic diagram of a rotary compressor according to a first embodiment of the present invention. In FIG. 1, the compressor forms a cylinder chamber 21 in a cylinder 2 housed in a hermetic casing 1, and a roller 3 is rotatably housed in the cylinder chamber 21, and a drive shaft 4 extending from the motor is mounted on the roller 3. The eccentric part 41 is inserted, and the roller 3 is eccentrically rotated in the cylinder chamber 21 by the eccentric rotation of the eccentric part 41, while the blade sliding groove 22 extending in the radial direction is formed in the cylinder 2, A blade 5 that is always pressed against the outer peripheral surface of the roller 3 by a spring 6 disposed on the back side of the sliding groove 22 is provided in the sliding groove 22 so as to be slidable. Is divided into a compression chamber in which the suction port is opened and a suction chamber in which the suction port 24 is opened.
以上のように構成されたロータリ圧縮機において、シリンダ2に形成されたブレード摺動溝22のシリンダ内径側の形状は、図3に示すように、圧縮室側の面取りCと吐出ポート23を連通させる切欠き部位Dを両者間に設けている。 In the rotary compressor configured as described above, the shape of the blade sliding groove 22 formed in the cylinder 2 on the cylinder inner diameter side is communicated with the chamfer C on the compression chamber side and the discharge port 23 as shown in FIG. A notch portion D is provided between the two.
以上のように、本実施の形態においては、ブレード摺動溝22のシリンダ内径側の圧縮室側に極めて微小な面取りCを施し、ブレード5、シリンダ2、ローラ3で囲まれる空間と吐出ポート24を連通させる切欠き部位Bをシリンダ面取りCと吐出ポート24間に設けることで、液圧縮運転によるシリンダ室内での異常な圧力上昇を防止しながら、再圧縮体積を縮小し、ロータリ圧縮機の性能向上を実現する。 As described above, in the present embodiment, a very small chamfer C is applied to the inner diameter side of the blade sliding groove 22 on the compression chamber side, and the space surrounded by the blade 5, the cylinder 2, and the roller 3 and the discharge port 24. By providing a notched portion B between the cylinder chamfer C and the discharge port 24, the recompression volume is reduced while preventing abnormal pressure increase in the cylinder chamber due to the liquid compression operation, and the performance of the rotary compressor Achieve improvements.
以上のように、本発明におけるロータリ圧縮機は、空調用の高効率圧縮機として用いることができ、使用冷媒としては、R410Aに関わらず、R407C等、すべてのHCFC22の代替冷媒用に適用できるほか、地球環境保護の観点から注目される二酸化炭素やアンモニア、ヘリウム等の自然冷媒にも適応することができる。 As described above, the rotary compressor according to the present invention can be used as a high-efficiency compressor for air conditioning, and as a refrigerant used, it can be applied to all HCFC22 substitute refrigerants such as R407C regardless of R410A. It can also be applied to natural refrigerants such as carbon dioxide, ammonia and helium, which are attracting attention from the viewpoint of protecting the global environment.
1 密閉ケーシング
2 シリンダ
21 シリンダ室
22 ブレード摺動溝
23 吐出ポート
24 吸入ポート
3 ローラ
4 駆動軸
41 偏心部
5 ブレード
6 ばね
DESCRIPTION OF SYMBOLS 1 Sealed casing 2 Cylinder 21 Cylinder chamber 22 Blade sliding groove 23 Discharge port 24 Suction port 3 Roller 4 Drive shaft 41 Eccentric part 5 Blade 6 Spring
Claims (5)
Priority Applications (1)
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JP2009244004A JP2011089482A (en) | 2009-10-23 | 2009-10-23 | Rotary compressor |
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JP2009244004A JP2011089482A (en) | 2009-10-23 | 2009-10-23 | Rotary compressor |
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JP2011089482A true JP2011089482A (en) | 2011-05-06 |
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ID=44107942
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JP2009244004A Pending JP2011089482A (en) | 2009-10-23 | 2009-10-23 | Rotary compressor |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107091230A (en) * | 2017-06-30 | 2017-08-25 | 广东美芝制冷设备有限公司 | Compressor and the refrigerating plant with it |
CN107091232A (en) * | 2017-06-30 | 2017-08-25 | 广东美芝制冷设备有限公司 | Lid sealing and lid sealing assembly, compressor for compressor |
CN107100842A (en) * | 2017-06-30 | 2017-08-29 | 广东美芝制冷设备有限公司 | The compression mechanism of compressor and the compressor with it |
WO2023020033A1 (en) * | 2021-08-20 | 2023-02-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder and compressor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS62156181U (en) * | 1986-03-27 | 1987-10-03 | ||
JPH01121589A (en) * | 1987-11-02 | 1989-05-15 | Hitachi Ltd | Rotary compressor |
JP2006063942A (en) * | 2004-08-30 | 2006-03-09 | Matsushita Electric Ind Co Ltd | Rotary compressor |
JP2006077582A (en) * | 2004-09-07 | 2006-03-23 | Mitsubishi Electric Corp | Rotary compressor |
-
2009
- 2009-10-23 JP JP2009244004A patent/JP2011089482A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62156181U (en) * | 1986-03-27 | 1987-10-03 | ||
JPH01121589A (en) * | 1987-11-02 | 1989-05-15 | Hitachi Ltd | Rotary compressor |
JP2006063942A (en) * | 2004-08-30 | 2006-03-09 | Matsushita Electric Ind Co Ltd | Rotary compressor |
JP2006077582A (en) * | 2004-09-07 | 2006-03-23 | Mitsubishi Electric Corp | Rotary compressor |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107091230A (en) * | 2017-06-30 | 2017-08-25 | 广东美芝制冷设备有限公司 | Compressor and the refrigerating plant with it |
CN107091232A (en) * | 2017-06-30 | 2017-08-25 | 广东美芝制冷设备有限公司 | Lid sealing and lid sealing assembly, compressor for compressor |
CN107100842A (en) * | 2017-06-30 | 2017-08-29 | 广东美芝制冷设备有限公司 | The compression mechanism of compressor and the compressor with it |
CN107091230B (en) * | 2017-06-30 | 2020-03-06 | 广东美芝制冷设备有限公司 | Compressor and refrigerating device with same |
CN107100842B (en) * | 2017-06-30 | 2020-03-06 | 广东美芝制冷设备有限公司 | Compression mechanism of compressor and compressor with same |
CN107091232B (en) * | 2017-06-30 | 2020-04-03 | 广东美芝制冷设备有限公司 | Cover seal and cover seal assembly for compressor and compressor |
WO2023020033A1 (en) * | 2021-08-20 | 2023-02-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Cylinder and compressor |
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