US20150176583A1 - Rotary compressor - Google Patents

Rotary compressor Download PDF

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Publication number
US20150176583A1
US20150176583A1 US14/409,289 US201314409289A US2015176583A1 US 20150176583 A1 US20150176583 A1 US 20150176583A1 US 201314409289 A US201314409289 A US 201314409289A US 2015176583 A1 US2015176583 A1 US 2015176583A1
Authority
US
United States
Prior art keywords
rotor
cylinder
drive plate
rotate
shaft
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.)
Abandoned
Application number
US14/409,289
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English (en)
Inventor
Yoshinori Murase
Akira Inagaki
Hiroki Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Assigned to DENSO CORPORATION reassignment DENSO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INAGAKI, AKIRA, ISHII, HIROKI, MURASE, YOSHINORI
Publication of US20150176583A1 publication Critical patent/US20150176583A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • 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
    • F04C18/22—Rotary-piston pumps specially adapted for elastic fluids of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth equivalents than the outer member
    • 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
    • F04C18/32—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 both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members
    • F04C18/332—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 both the movement defined in group F04C18/02 and relative reciprocation between the co-operating members with vanes hinged to the outer member and reciprocating with respect to the inner member
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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

Definitions

  • the present invention relates to a rotary compressor, more particularly to one which is high in efficiency and reliability in compression of a refrigerant in an air-conditioner etc. and which can be reduced in size while achieving both high efficiency and reliability.
  • the springs and vanes are arranged at the rotating cylinder part, so centrifugal force acts on them at the time of high speed rotation. If overcoming the spring force, clearance is formed between the vane nose and rotor (the vane is separate from the rotor.) and no compression operation occurs, so the drop in performance becomes a problem. Therefore this was unsuited for high speed rotation. Further, if increasing the spring force so as to overcome the centrifugal force, the sliding action occurs in the state where the pressing force between the vane nose and the rotor becomes excessive, and the vane nose part would seize up by adhesive wear or other problems would arise in reliability.
  • PLT 2 discloses forming a compression chamber by a vane part 13 (partition plate) between a cylinder 8 which is formed integrally with a rotor of an electric motor, and a stationary type piston 11 which is set at an eccentric position with respect to the cylinder 8 .
  • This prior art can also still basically be called a usual rolling piston, so the above-mentioned problems arose.
  • PLT 1 Japanese Examined Patent Publication No. 53-043682B2
  • PLT 2 Japanese Examined Patent Publication No. 01-054560B2
  • the present invention in view of the above problems, provides a rotary compressor which is high in efficiency and reliability and can be reduced in size while achieving both high efficiency and reliability.
  • the aspect of the invention of claim 1 provides a rotary compressor which is provided with a rotor ( 11 ) which can rotate about an axial center (O 1 ) of a shaft ( 12 ) which is attached to a casing ( 1 ), a cylinder ( 8 ) which can rotate about a center of rotation (O 2 ) which is eccentric from the shaft ( 12 ), and a drive plate ( 13 ) which can swing with respect to either the cylinder ( 8 ) or the rotor ( 11 ) and can slide with respect to the other and which connects the cylinder ( 8 ) and the rotor ( 11 ) to be able to rotate, in which rotary compressor, an inner surface of the cylinder ( 8 ) and an outer circumference of the rotor ( 11 ) are made to contact at a partition point (C) by making the center of rotation (O 2 ) of the cylinder ( 8 ) eccentric from the axial center (O 1 ) of the shaft ( 12 ), and the space between an inner surface of the
  • FIG. 1 is a cross-sectional view which shows a first embodiment of the present invention.
  • FIG. 2 is a detailed partial cross-sectional view which shows the first embodiment of the present invention.
  • FIG. 3 is an explanatory view which shows the operation of the first embodiment of the present invention.
  • FIG. 4 is a cross-sectional view which shows the first embodiment of the present invention.
  • FIG. 5 is a cross-sectional view which shows a second embodiment of the present invention.
  • FIG. 6 is a cross-sectional view which shows a third embodiment of the present invention.
  • FIG. 7 is a cross-sectional view which shows a fourth embodiment of the present invention.
  • a stator 2 of an electric motor is fit and fastened at an inner surface of a casing 1 .
  • the casing 1 has a lid 4 attached to it by fastening bolts etc.
  • a rotor 3 (motor rotor) of the electric motor is fastened to an outer circumference of a drive cylinder 8 (cylinder 8 ), so the drive cylinder 8 is made to rotate about a shaft 12 by the motor rotor 3 .
  • the drive cylinder 8 comprises a tubular shaped cylinder and side plates 27 and 27 which are attached to the two sides of the tubular shaped cylinder by fastening bolts 41 etc.
  • the tubular shaped cylinder and the side plates together configure the drive cylinder 8 .
  • the shaft 12 is press fit into the casing 1 at the right end in FIG. 1 .
  • the left end part of the shaft 12 is inserted or press fit into the lid 4 , so the shaft 12 is designed not to rotate.
  • the motor rotor 3 and the drive cylinder 8 are formed integrally each other around this stationary shaft 12 and are able to rotate with respect to an eccentric part 12 ′ of the shaft 12 through bearings 42 .
  • a rotor 11 which acts as a compressor is turned along with the drive cylinder 8 by a drive plate 13 .
  • the axial center O 1 of the shaft 12 is eccentric from the center of rotation O 2 of the motor rotor 3 of the electric motor.
  • These center of rotation O 2 and axial center O 1 are non-moving points.
  • the rotor 11 of the compressor is arranged so that the rotor 11 can rotate around the shaft 12 .
  • the rotor 11 can rotate about the non-moving axial center O 1 and is turned along with the drive cylinder 8 by the drive plate 13 .
  • the drive motor of the present embodiment an electric motor is used, but the invention can also be applied to the case of a belt transmission.
  • One end of the drive plate 13 is set at the drive cylinder 8 so as to be able to swing, while the other end of the drive plate 13 is inserted into a sliding groove 24 of the rotor 11 of the compressor.
  • Rotation of the drive cylinder 8 is transmitted by the drive plate 13 to the rotor 11 whereby the rotor 11 rotates.
  • the drive cylinder 8 and the rotor 11 contact each other at the partition part (contact point) C at all times during rotation.
  • one end of the drive plate 13 may be set at the rotor 11 so as to be able to swing, while the other end of the drive plate 13 may be inserted into a sliding groove 24 of the drive cylinder 8 .
  • the refrigerant gas to be compressed or other compression medium is introduced from a suction port 16 , passes through a suction passage 17 , and is introduced from a shaft opening 18 and rotor passage 20 to a suction side working chamber (suction chamber) 10 .
  • the shaft opening 18 and the rotor passage 20 are communicated at all times at all angles.
  • a groove 19 is formed across the entire circumference in the circumferential direction of part of the shaft 12 .
  • a compression chamber discharge port 21 is provided at the side plate 27 which is fastened to one side of the drive cylinder 8 .
  • a reed valve 22 discharge valve part
  • another valve poppet valve etc.
  • the compression chamber discharge port 21 and reed valve 22 rotate while discharging compressed gas to the space inside of the casing along with rotation of the drive cylinder 8 . After that, the gas is discharged outside from a casing discharge port 23 .
  • the drive plate 13 is a member which corresponds to a “vane” in a rolling piston of the prior art. That is, in the present embodiment, the drive plate 13 is a member which partitions a space into a compression chamber (compression side working chamber) 9 and a suction chamber 10 .
  • the drive plate 13 also has the function as a connecting member for making the rotor 11 of the compressor be turned along with the drive cylinder 8 .
  • a head part 131 of the drive plate 13 forms a cylindrical surface.
  • the drive plate 13 is designed to be able to swing with respect to a center axis of the head part 131 due to the provision of a clearance 132 at the drive cylinder 8 .
  • the compressor part comprises the rotor 11 which can rotate about the axial center O 1 of the shaft 12 which is fastened to the casing 1 , the drive cylinder 8 which can freely rotate about the center of rotation O 2 which is eccentric from the shaft 12 , and the drive plate 13 which connects the drive cylinder 8 and the rotor 11 .
  • the space between the rotor 11 and the drive cylinder 8 forms working chambers.
  • the working chambers are formed by the drive plate 13 splitting the space, whereby the compression chamber 9 and the suction chamber 10 are formed.
  • the electric motor 2 , 3 which drives rotation of the drive cylinder 8 is used to make the drive cylinder 8 rotate so that, among the working chambers which are formed between the drive cylinder 8 and the rotor 11 , the compression chamber 9 at the front of the drive plate 13 in the direction of rotation compresses the suction gas.
  • the working chambers which are formed between the drive cylinder 8 and the rotor 11 are partitioned by the drive plate 13 and the partition point C of the contact point of the drive cylinder 8 and the rotor 11 .
  • the compression chamber 9 is formed, while at the rear, the suction chamber 10 is formed.
  • the drive cylinder 8 is arranged inside of the motor rotor 3 of the electric motor. Therefore, it is possible to make the compressor smaller in size.
  • the shaft 12 does not rotate, so the shaft 12 may have a suction port 16 set at it to suck in the gas. Further, at a side plate 27 where there is a little effect of centrifugal force at the time of rotation, a compression chamber discharge port 21 and reed valve 22 are provided.
  • the head part 131 of the drive plate 13 forms a cylindrical surface.
  • the drive plate 13 is configured to be able to swing with respect to the center axis of the head part 131 .
  • two shoes 133 with single sides which are configured by cylindrical surfaces are set so as to sandwich the end part of the drive plate 13 .
  • the rest is configured the same as in FIGS. 1 and 2 .
  • the edge part of the front end face of the drive plate 13 which is inserted into the sliding groove 24 which is formed at the rotor 11 , is formed with a rounded shape.
  • the edge part of the opening part of the sliding groove 24 which is formed at the circumferential surface of the rotor 11 , is formed with a rounded shape.
  • the head part 131 of the drive plate 13 as shown in FIGS. 1 and 2 , can be provided at the drive cylinder 8 or can be provided at the rotor 11 .
  • the second embodiment of the present invention is the case where the shaft 12 (axial center O 1 ) is attached so as to rotate with respect to the casing 1 and the cylinder 8 is driven to rotate from the rotor 11 of the compressor through the drive plate 13 .
  • the motor rotor 3 is connected with the shaft 12 .
  • the rotor 11 of the compressor and the shaft 12 are formed integrally.
  • the shaft 12 is provided with an off-centered eccentric part 12 ′, so the cylinder 8 can rotate by the drive plate 13 around the center of rotation O 2 of this eccentric part 12 .
  • the rest is the same as in the first embodiment.
  • the shaft 12 (axial center O 1 ) is attached so as to rotate with respect to the casing 1 and the cylinder 8 is driven to rotate from the rotor 11 side through the drive plate 13 .
  • an electric motor of a type where, unlike a normal motor, the stator 2 is at the inside is used.
  • the motor rotor 3 is formed integrally with the shaft 12 (axial center O 1 ) together with the rotor 11 of the compressor. Since the shaft 12 has the off-centered eccentric part 12 ′ set at the shaft 12 , the cylinder 8 can rotate by the drive plate 13 around the center of rotation O 2 of this eccentric part 12 ′. The rest is the same as in the first embodiment.
  • the fourth embodiment is an embodiment in which the suction and discharge of the first embodiment are reversed.
  • the suction port 16 is set at the position of reference sign 23 in FIG. 1 .
  • the part 21 of the side plate 27 becomes the compression chamber suction port 21 ′ (reed valve unnecessary).
  • a compression chamber 9 is formed, while at the rear, a suction chamber 10 is formed, so at the front of the drive plate 13 in the direction of rotation, part of the discharge passage constituted by the rotor passage 20 is formed, while at the rear of the drive plate 13 in the direction of rotation, a compression chamber suction port 21 ′ is provided.
  • Reference signs 17 and 16 of FIG. 1 show the discharge passage in this embodiment.
  • a discharge valve part (reed valve etc.) is set.
  • the inside of the casing 1 becomes a suction chamber, so the temperature becomes low and the electric motor is improved in motor efficiency by cooling.
  • the other effects are the same as in the first embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)
US14/409,289 2012-06-26 2013-06-26 Rotary compressor Abandoned US20150176583A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012142867A JP5901446B2 (ja) 2012-06-26 2012-06-26 回転型圧縮機
JP2012-142867 2012-06-26
PCT/JP2013/067528 WO2014003060A1 (ja) 2012-06-26 2013-06-26 回転型圧縮機

Publications (1)

Publication Number Publication Date
US20150176583A1 true US20150176583A1 (en) 2015-06-25

Family

ID=49783201

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/409,289 Abandoned US20150176583A1 (en) 2012-06-26 2013-06-26 Rotary compressor

Country Status (5)

Country Link
US (1) US20150176583A1 (enrdf_load_stackoverflow)
JP (1) JP5901446B2 (enrdf_load_stackoverflow)
CN (1) CN104471250A (enrdf_load_stackoverflow)
DE (1) DE112013003254T5 (enrdf_load_stackoverflow)
WO (1) WO2014003060A1 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160091054A1 (en) * 2014-09-29 2016-03-31 Delbert Tesar Compact Parallel Eccentric Rotary Actuator
US20160138679A1 (en) * 2014-09-29 2016-05-19 Delbert Tesar Spring augmented orthotic or prosthetic equipped with a compact parallel eccentric actuator
US20180038372A1 (en) * 2015-03-27 2018-02-08 Denso Corporation Rotating cylinder type compressor
US10125770B2 (en) 2013-12-25 2018-11-13 Denso Corporation Cylinder-rotation compressor with a discharge valve
US10145373B2 (en) 2013-06-06 2018-12-04 Denso Corporation Rotary compression mechanism
US10422336B2 (en) 2014-12-23 2019-09-24 Denso Corporation Cylinder rotary compressor having an inlet of the rotor-side suction passage opened at the rotor-side concave portion and communicating with a rotor-side communication space therein
US10533554B2 (en) 2015-05-26 2020-01-14 Denso Corporation Cylinder-rotation compressor with improved vane and suction passage locations
US10907628B2 (en) 2015-11-12 2021-02-02 Denso Corporation Electric compressor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6204867B2 (ja) * 2014-04-07 2017-09-27 株式会社Ｓｏｋｅｎ 電動圧縮機
JP6331938B2 (ja) * 2014-10-02 2018-05-30 株式会社Ｓｏｋｅｎ 積層コア、同期電動機、および電動圧縮機
JP2016108955A (ja) * 2014-12-02 2016-06-20 株式会社デンソー シリンダ回転型圧縮機
KR101982437B1 (ko) * 2018-02-07 2019-05-27 조성엽 A 중공펌프
WO2024201105A1 (en) * 2023-03-30 2024-10-03 Siam Compressor Industry Co., Ltd. Rotary compressor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440593A (en) * 1946-10-23 1948-04-27 Harry B Miller Radial vane pump mechanism
US7344367B2 (en) * 2005-01-18 2008-03-18 Tecumseh Products Company Rotary compressor having a discharge valve

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US4568257A (en) * 1984-04-13 1986-02-04 Moore Jesse C Rotary pump
JPH029982A (ja) * 1988-06-27 1990-01-12 Matsushita Electric Ind Co Ltd 回転圧縮機
JPH0261384A (ja) * 1988-08-25 1990-03-01 Yoshio Takeuchi 搖動ベーン型ロータリーコンプレッサ
JPH05215087A (ja) * 1992-02-05 1993-08-24 Shingo Saida ロータリーコンプレッサー
CN1264792A (zh) * 2000-03-17 2000-08-30 李辛沫 叶片式旋转压缩机
EP2251545B1 (en) * 2008-01-29 2017-04-12 Dafeng Fengtai Fluid Machinery Technology Co., Ltd. A rotary compressor
JP4962585B2 (ja) * 2010-03-19 2012-06-27 ダイキン工業株式会社 回転式圧縮機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440593A (en) * 1946-10-23 1948-04-27 Harry B Miller Radial vane pump mechanism
US7344367B2 (en) * 2005-01-18 2008-03-18 Tecumseh Products Company Rotary compressor having a discharge valve

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10145373B2 (en) 2013-06-06 2018-12-04 Denso Corporation Rotary compression mechanism
US10125770B2 (en) 2013-12-25 2018-11-13 Denso Corporation Cylinder-rotation compressor with a discharge valve
US20160091054A1 (en) * 2014-09-29 2016-03-31 Delbert Tesar Compact Parallel Eccentric Rotary Actuator
US20160138679A1 (en) * 2014-09-29 2016-05-19 Delbert Tesar Spring augmented orthotic or prosthetic equipped with a compact parallel eccentric actuator
US9915319B2 (en) * 2014-09-29 2018-03-13 Delbert Tesar Compact parallel eccentric rotary actuator
US20180163820A1 (en) * 2014-09-29 2018-06-14 Delbert Tesar Compact parallel eccentric rotary actuator
US10502284B2 (en) * 2014-09-29 2019-12-10 Delbert Tesar Spring augmented orthotic or prosthetic equipped with a compact parallel eccentric actuator
US10801586B2 (en) * 2014-09-29 2020-10-13 Delbert Tesar Compact parallel eccentric rotary actuator
US10422336B2 (en) 2014-12-23 2019-09-24 Denso Corporation Cylinder rotary compressor having an inlet of the rotor-side suction passage opened at the rotor-side concave portion and communicating with a rotor-side communication space therein
US20180038372A1 (en) * 2015-03-27 2018-02-08 Denso Corporation Rotating cylinder type compressor
US10533554B2 (en) 2015-05-26 2020-01-14 Denso Corporation Cylinder-rotation compressor with improved vane and suction passage locations
US10907628B2 (en) 2015-11-12 2021-02-02 Denso Corporation Electric compressor

Also Published As

Publication number Publication date
WO2014003060A1 (ja) 2014-01-03
JP5901446B2 (ja) 2016-04-13
CN104471250A (zh) 2015-03-25
DE112013003254T5 (de) 2015-04-02
JP2014005795A (ja) 2014-01-16

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AS Assignment

Owner name: DENSO CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MURASE, YOSHINORI;INAGAKI, AKIRA;ISHII, HIROKI;REEL/FRAME:034549/0550

Effective date: 20141105

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION