WO2019187272A1 - Compresseur rotatif - Google Patents

Compresseur rotatif Download PDF

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Publication number
WO2019187272A1
WO2019187272A1 PCT/JP2018/038727 JP2018038727W WO2019187272A1 WO 2019187272 A1 WO2019187272 A1 WO 2019187272A1 JP 2018038727 W JP2018038727 W JP 2018038727W WO 2019187272 A1 WO2019187272 A1 WO 2019187272A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil supply
supply hole
compression mechanism
roller
stage
Prior art date
Application number
PCT/JP2018/038727
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English (en)
Japanese (ja)
Inventor
弘丞 小笠原
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to EP18912376.3A priority Critical patent/EP3779200A4/fr
Publication of WO2019187272A1 publication Critical patent/WO2019187272A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F04C18/3562—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
    • F04C18/3564—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/008—Hermetic pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow

Definitions

  • the present invention relates to a rotary compressor, and more particularly to an internal intermediate pressure type multi-stage (two-stage) rotary compressor provided with first and second rotary compression elements in a sealed container.
  • an internal intermediate pressure type multi-stage (two-stage) compression type rotary compressor having first and second rotary compression elements is known.
  • Such a rotary compressor is constituted by a drive motor and first and second rotary compression mechanisms driven by the drive motor in an airtight container. Refrigerant gas is sucked into the low pressure chamber side of the cylinder from the suction port of the first rotary compression mechanism, is compressed by the operation of the roller and vane to become an intermediate pressure, and is sealed from the high pressure chamber side of the cylinder through the discharge port and the discharge muffler. It is discharged inside.
  • the intermediate-pressure refrigerant gas in the sealed container is sucked into the low-pressure chamber side of the cylinder from the suction port of the second rotary compression mechanism, and the second-stage compression is performed by the operation of the roller and the vane, so that the high-temperature and high-pressure refrigerant gas.
  • a technique of discharging from the high pressure chamber side to the outside is disclosed.
  • Patent Document 1 has a problem that a performance loss due to pressure bypass occurs in the process of returning the oil separated inside the rotary compressor.
  • intermediate pressure oil inside a sealed container is constantly supplied into the compression chamber in order to improve the sealing performance in the second-stage compression chamber. Therefore, there is a problem that the oil discharge amount from the second-stage compression chamber inevitably increases.
  • the amount of oil supplied to the second-stage compression chamber is also difficult to reduce due to restrictions in the manufacturing process such as processing accuracy.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a rotary compressor capable of appropriately adjusting the amount of oil supplied through an oil supply hole with a simple configuration.
  • the present invention provides a drive motor in a sealed container, a first stage rotary compression mechanism and a second stage rotary compression mechanism that are rotationally driven by the rotation of the drive motor, and the first stage rotary compression.
  • An intermediate partition plate provided between the mechanism and the second stage rotary compression mechanism, and an oil supply passage extending outward from the center of the hermetic container is provided in the intermediate partition plate, and the oil
  • An oil supply hole is formed to communicate the supply passage with the second compression chamber of the second stage rotary compression mechanism, and the oil supply hole is located at a position other than the compression stroke of the second roller of the second stage rotary compression mechanism. It is characterized by being formed at a position where it is open.
  • the oil supply hole that opens when the second roller is in a position other than the compression stroke is provided, the oil supply hole can be held in an open state or a closed state according to the crank angle of the second roller. This makes it possible to adjust the amount of oil supplied through the oil supply hole.
  • This specification includes all the contents of the Japanese patent application / Japanese Patent Application No. 2018-063470 filed in Japan on March 29, 2018.
  • the oil supply hole that opens when the second roller is in a position other than the compression stroke is provided, the oil supply hole is held in an open state or a closed state according to the crank angle of the second roller. Accordingly, the amount of oil supplied through the oil supply hole can be adjusted with a simple configuration.
  • FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a rotary compressor according to the present invention.
  • FIG. 2 is an enlarged view of the rotary compressor of this embodiment.
  • FIG. 3 is a diagram illustrating an example in which the oil supply hole of the present embodiment is formed with a distance of 20 mm from the center of the rotation shaft and an angle from the second vane of 120 °.
  • FIG. 4 is a view showing an example in which the oil supply hole of the present embodiment is formed so that the distance from the center of the rotation shaft is 19.2 mm and the angle from the second vane is 120 °.
  • FIG. 1 is a schematic longitudinal sectional view showing an embodiment of a rotary compressor according to the present invention.
  • FIG. 2 is an enlarged view of the rotary compressor of this embodiment.
  • FIG. 3 is a diagram illustrating an example in which the oil supply hole of the present embodiment is formed with a distance of 20 mm from the center of the rotation shaft and an angle from the second vane of 120 °.
  • FIG. 5 is a diagram illustrating an example in which the oil supply hole of the present embodiment is formed with a distance of 20 mm from the center of the rotation shaft and an angle from the second vane of 120 °.
  • FIG. 6 is a diagram showing an example in which the oil supply hole of the present embodiment is formed so that the distance from the center of the rotation shaft is 19.5 mm and the angle from the second vane is 10 °.
  • a drive motor in a sealed container a first stage rotary compression mechanism and a second stage rotary compression mechanism that are rotationally driven by the rotation of the drive motor, the first stage rotary compression mechanism, and the second stage.
  • An intermediate partition plate provided between the rotary rotation compression mechanism and the intermediate partition plate provided with an oil supply passage extending outward from the center of the hermetic container.
  • An oil supply hole that communicates with the second compression chamber of the two-stage rotary compression mechanism is formed, and the oil supply hole is formed at a position that opens when the second roller of the second-stage rotary compression mechanism is in a position other than the compression stroke.
  • the oil supply hole that opens when the second roller is in a position other than the compression stroke is provided, the oil supply hole can be held in an open state or a closed state according to the crank angle of the second roller. This makes it possible to adjust the amount of oil supplied through the oil supply hole with a simple configuration.
  • the oil supply hole extends from the position of the second vane of the second stage rotary compression mechanism to the suction passage side so that the crank angle of the second roller is in a range of 60 ° to 350 °. It is provided in the range of 0 ° to 120 °. According to this, the oil supply hole is communicated in the range of 0 ° to 120 ° from the second vane position of the second stage rotary compression mechanism to the suction passage side so that the crank angle of the second roller is in the range of 60 ° to 350 °. Since it is provided in the range of °, when the second roller is in a position other than the compression stroke, the oil supply hole can be opened, and this makes it possible to adjust the amount of oil supplied through the oil supply hole. Become.
  • FIG. 1 is a schematic longitudinal sectional view showing an embodiment of the rotary compressor of the present invention
  • FIG. 2 is an enlarged view of the rotary compressor.
  • the rotary compressor 1 includes a vertical cylindrical hermetic container 10 made of a steel plate, and a lid 11 is attached to the upper part of the hermetic container 10.
  • a drive motor 20 is accommodated above the inside of the sealed container 10.
  • a terminal 12 for supplying power to the drive motor 20 is attached to the center of the upper surface of the lid 11.
  • the drive motor 20 includes a stator 21 that is annularly attached along the inner peripheral surface of the upper space of the sealed container 10, and a rotor 22 that is inserted and disposed inside the stator 21 with a gap.
  • a rotating shaft 23 extending in the axial direction of the sealed container 10 is attached to the center of the rotor 22.
  • the stator 21 includes a laminated body 24 in which annular electromagnetic steel plates are laminated, and a stator coil 25 wound around the laminated body 24.
  • the rotor 22 includes a laminated body 26 in which electromagnetic steel plates are laminated, and a permanent magnet 27 disposed in the laminated body 26.
  • a first stage rotary compression mechanism 30 that is rotationally driven by the rotary shaft 23 of the drive motor 20 and a second stage rotary compression mechanism 31 that is positioned above the first stage rotary compression mechanism 31 are disposed below the sealed container 10.
  • An intermediate partition plate 32 is disposed between the first stage rotary compression mechanism 30 and the second stage rotary compression mechanism 31.
  • An upper support member 33 that closes the upper surface opening of the second-stage rotary compression mechanism 31 is disposed above the second-stage rotary compression mechanism 31, and below the first-stage rotary compression mechanism 30, the first-stage rotary compression mechanism 31.
  • a lower support member 34 that closes the lower surface opening of the rotary compression mechanism 30 is disposed.
  • the first stage compression mechanism includes a first cylinder 41 having a first compression chamber 40 for compressing a refrigerant therein, a first eccentric member 42 provided in the first cylinder 41, and a first eccentric member.
  • the first roller 43 fitted to 42 and rotated eccentrically, and the first compression chamber 40 in the first cylinder 41 in contact with the outer peripheral surface of the first roller 43 are divided into a low pressure chamber side and a high pressure chamber side, respectively.
  • a first vane 44 is Similarly, the second stage rotary compression mechanism 31 includes a second cylinder 51 having a second compression chamber 50 for compressing the refrigerant therein, and a second eccentric member 52 provided in the second cylinder 51.
  • the second roller 53 fitted into the second eccentric member 52 and rotated eccentrically, and the second compression chamber 50 in the second cylinder 51 in contact with the outer peripheral surface of the second roller 53 are connected to the low pressure chamber side and the high pressure chamber, respectively.
  • the upper support member 33 and the lower support member 34 are provided with a suction passage (not shown) that communicates with the inside of the second cylinder 51 and the first cylinder 41 through a suction port (not shown).
  • An upper cover 35 and a lower cover 36 are provided on the upper surface and the lower surface of the lower support member 34, respectively.
  • On the lower surface of the lower support member 34 a first-stage discharge muffler 37 having an intermediate pressure is provided.
  • a high-pressure second-stage discharge muffler 38 that is partially formed in a concave shape is provided on the upper surface of the upper support member 33.
  • the second stage rotary compression mechanism 31 is provided with a suction passage 60 that communicates from the second compression chamber 50 to the inside of the sealed container 10.
  • the intermediate partition plate 32 is formed with an oil supply passage 61 extending outward from the center of the sealed container 10, and is configured such that intermediate pressure oil is supplied to the oil supply passage 61.
  • the oil supply passage 61 is formed with an oil supply hole 62 that opens into the second compression chamber 50 of the second stage rotary compression mechanism 31.
  • the oil supply hole 62 is formed at an opening position when the second roller 53 is located at a position other than the compression stroke. Specifically, for example, when the position of the second vane 54 is set to 0 ° so that the crank angle of the second roller 53 communicates within a range of 60 ° to 350 °, the second vane 54 moves toward the suction passage 60 side.
  • the oil supply hole 62 is provided in the range of 10 ° to 120 °.
  • the distance from the center of the rotating shaft 23 is also set appropriately for the oil supply hole 62.
  • the oil supply hole 62 is formed at a position that is opened when the second roller 53 is in a position other than the compression stroke.
  • the oil supply hole 62 is opened when the second roller 53 is in the compression stroke position. This is because the oil may flow backward due to the pressure caused by the compression.
  • the oil supply hole 62 is provided in the range of 10 ° to 120 ° from the second vane 54 to the suction passage 60 side, but the present invention is not limited to this. That is, the reason why the angle from the second vane 54 to the suction passage 60 is 10 ° is that the oil supply hole 62 cannot be formed at a position overlapping the second vane 54 in consideration of the width dimension of the second vane 54. Because. Therefore, depending on the width dimension of the second vane 54, the position of the oil supply hole 62 can be set in a range of 0 ° to 10 °.
  • FIG. 3 is a view showing an example in which the oil supply hole 62 is formed with a distance of 20 mm from the center of the rotary shaft 23 and an angle from the second vane 54 of 120 °.
  • FIG. 4 is a view showing an example in which the oil supply hole 62 is formed at a distance of 19.2 mm from the center of the rotating shaft 23 and an angle from the second vane 54 of 120 °.
  • FIG. 5 is a diagram illustrating an example in which the oil supply hole 62 is formed with a distance of 20 mm from the center of the rotating shaft 23 and an angle from the second vane 54 of 120 °.
  • FIG. 6 is a view showing an example in which the oil supply hole 62 is formed with a distance of 19.5 mm from the center of the rotating shaft 23 and an angle from the second vane 54 of 10 °.
  • the crank angle of the second roller 53 is 0 °. In this case, the oil supply hole 62 is closed. Even when the second roller 53 rotates and the crank angle reaches 180 °, the oil supply hole 62 is closed. When the crank angle of the second roller 53 reaches 245 °, the oil supply hole 62 starts to open, and when the crank angle of the second roller 53 reaches 350 °, the oil supply hole 62 finishes opening.
  • the oil mixed in the refrigerant gas flows into the oil supply passage 61 of the intermediate partition plate 32 and flows into the second cylinder 51 through the oil supply hole 62.
  • the oil supply hole 62 is held in an open state or a closed state according to the crank angle of the second roller 53. Therefore, since the oil supply hole 62 is not always opened, the oil supply amount can be appropriately adjusted by the oil supply hole 62.
  • the drive motor 20 in the sealed container 10 the first stage rotary compression mechanism 30 and the second stage rotary compression mechanism 31 that are rotationally driven by the rotation of the drive motor 20,
  • An intermediate partition plate 32 provided between the first-stage rotary compression mechanism 30 and the second-stage rotary compression mechanism 31, and an oil supply extending outward from the center of the sealed container 10 to the intermediate partition plate 32
  • a passage 61 is provided to form an oil supply hole 62 that communicates between the oil supply passage 61 and the second compression chamber 50 of the second stage rotary compression mechanism 31, and the oil supply hole 62 is a second roller of the second stage rotary compression mechanism 31.
  • 53 is formed at a position that opens when it is at a position other than the compression stroke.
  • the oil supply hole 62 that opens when the second roller 53 is located at a position other than the compression stroke is provided, so that the oil supply hole 62 is held in an open state or a closed state according to the crank angle of the second roller 53. Accordingly, the amount of oil supplied through the oil supply hole 62 can be adjusted.
  • the oil supply hole 62 is suctioned from the position of the second vane 54 of the second stage rotary compression mechanism 31 so that the crank angle of the second roller 53 communicates in the range of 60 ° to 350 °. It is provided in the range of 0 ° to 120 ° on the passage 60 side. As a result, the oil supply hole 62 is moved from the position of the second vane 54 of the second stage rotary compression mechanism 31 to the suction passage 60 side so as to communicate with the crank angle of the second roller 53 in the range of 60 ° to 350 °.
  • the oil supply hole 62 can be opened when the second roller 53 is located at a position other than the compression stroke, thereby reducing the amount of oil supplied by the oil supply hole 62. It becomes possible to adjust.
  • the oil supply hole can be held in an open state or a closed state according to the crank angle of the second roller, and the amount of oil supplied through the oil supply hole can be adjusted with a simple configuration. Therefore, it is suitable as a rotary compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un compresseur rotatif dans lequel une quantité d'alimentation d'une huile passant par un trou d'alimentation en huile peut être ajustée de manière appropriée avec une configuration simple. La présente invention comprend, à l'intérieur d'un contenant étanche (10) : un moteur d'entraînement (20) ; un mécanisme de compression rotatif de premier étage (30) et un mécanisme de compression rotatif de second étage (31) qui sont entraînés par la rotation du moteur d'entraînement (20) ; et une plaque de séparation intermédiaire (32) disposée entre le mécanisme de compression rotatif de premier étage (30) et le mécanisme de compression rotatif de second étage (31), sur la plaque de séparation intermédiaire (32), un passage d'alimentation en huile (61) qui s'étend depuis le centre du contenant étanche vers l'extérieur est fourni, un trou d'alimentation en huile (62) est formé, par lequel le passage d'alimentation en huile (61) et une seconde chambre de compression (50) du second mécanisme de compression rotatif (31) communiquent entre eux ; et le trou d'alimentation en huile (62) est formé au niveau d'une position qui est ouverte lorsqu'un second rouleau (53) du second mécanisme de compression rotatif (31) se trouve à une position autre qu'une course de compression.
PCT/JP2018/038727 2018-03-29 2018-10-17 Compresseur rotatif WO2019187272A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18912376.3A EP3779200A4 (fr) 2018-03-29 2018-10-17 Compresseur rotatif

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018063470 2018-03-29
JP2018-063470 2018-03-29

Publications (1)

Publication Number Publication Date
WO2019187272A1 true WO2019187272A1 (fr) 2019-10-03

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ID=68061063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/038727 WO2019187272A1 (fr) 2018-03-29 2018-10-17 Compresseur rotatif

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EP (1) EP3779200A4 (fr)
WO (1) WO2019187272A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111720312A (zh) * 2020-06-18 2020-09-29 广东美芝制冷设备有限公司 旋转压缩机和制冷循环系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004293330A (ja) * 2003-03-25 2004-10-21 Sanyo Electric Co Ltd ロータリコンプレッサ
JP2012072716A (ja) 2010-09-29 2012-04-12 Sanyo Electric Co Ltd ロータリコンプレッサ及びその製造方法
JP2018063470A (ja) 2016-10-11 2018-04-19 富士通株式会社 制御装置および制御方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7128540B2 (en) * 2001-09-27 2006-10-31 Sanyo Electric Co., Ltd. Refrigeration system having a rotary compressor
US7223082B2 (en) * 2003-03-25 2007-05-29 Sanyo Electric Co., Ltd. Rotary compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004293330A (ja) * 2003-03-25 2004-10-21 Sanyo Electric Co Ltd ロータリコンプレッサ
JP2012072716A (ja) 2010-09-29 2012-04-12 Sanyo Electric Co Ltd ロータリコンプレッサ及びその製造方法
JP2018063470A (ja) 2016-10-11 2018-04-19 富士通株式会社 制御装置および制御方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3779200A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111720312A (zh) * 2020-06-18 2020-09-29 广东美芝制冷设备有限公司 旋转压缩机和制冷循环系统
CN111720312B (zh) * 2020-06-18 2022-08-19 广东美芝制冷设备有限公司 旋转压缩机和制冷循环系统

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EP3779200A1 (fr) 2021-02-17
EP3779200A4 (fr) 2021-05-19

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