US20030138340A1 - Cylinder assembly of compressor - Google Patents

Cylinder assembly of compressor Download PDF

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Publication number
US20030138340A1
US20030138340A1 US10/296,384 US29638402A US2003138340A1 US 20030138340 A1 US20030138340 A1 US 20030138340A1 US 29638402 A US29638402 A US 29638402A US 2003138340 A1 US2003138340 A1 US 2003138340A1
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US
United States
Prior art keywords
cylinder
coupled
inner space
insertion portion
rotational 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
US10/296,384
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English (en)
Inventor
Young-Jong Kim
Jong-Hun Ha
Byung-Ha Ahn
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AHN, BYUNG-HA, HA, JONG-HUN, KIM, YOUNG-JONG
Publication of US20030138340A1 publication Critical patent/US20030138340A1/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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • 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
    • F04C18/3568—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 with axially movable vanes

Definitions

  • the present invention relates to a cylinder assembly of a compressor, and more particularly, to a cylinder assembly of a compressor that is capable of heightening a concentricity between a cylinder compressing a gas and bearings coupled thereto, preventing leakage of a compressed gas and reducing a dead volume.
  • a compressor compresses a gas, including a closed container having a certain internal space, an electric mechanism unit mounted within the closed container and generating a driving force, and a compression mechanism unit for receiving the driving force of the electric mechanism unit and compressing a gas.
  • the compressor is classified into various types of a rotary type compressor, a reciprocating compressor or a scroll compressor depending on the compression mechanism unit compressing a gas.
  • FIGS. 1, 2 and 3 illustrate the compression mechanism unit of a conventional compressor.
  • a cylindrical inner space (V) is formed, and a rotational shaft 20 is penetratingly inserted to the central portion of a cylinder assembly (K) having a suction passage 11 and a discharge passage 12 respectively communicating with the inner space (V).
  • the rotational shaft 20 includes a partition plate 30 with a waveform curve face in shape of sine wave formed at one side of an shaft portion 21 having a certain length.
  • the partition plate 30 is positioned inside the inner space (V) of the cylinder assembly (K), so that the inner space (V) is sectioned into first and second spaces 13 and 14 .
  • Vanes 40 -and 41 having a certain thickness and a certain area are insertedly coupled at both sides of the cylinder assembly (K).
  • an opening and closing unit 50 for discharging a gas compressed in the compression areas 13 b and 14 b of the first and second spaces 13 and 14 is coupled at one side of the first bearing 60 and the second bearing 70 .
  • the cylinder assembly (K) includes: a cylinder 10 having a cylindrical inner space (V) so that the partition plate 30 can be inserted in a cylinder body 15 formed in a certain shape; a first bearing 60 coupled at an upper side of the cylinder 10 (in view of the drawing) to cover the cylinder and supporting the rotational shaft 20 ; and a second bearing 70 coupled at a lower side (in view of the drawing) of the cylinder 10 and supporting the rotational shaft 20 .
  • the first and second bearings 60 and 70 respectively include support units 62 and 72 protruded to have a certain height at one side of the bearing bodies 61 and 71 formed to have a certain thickness and a certain area, shaft insertion holes 63 and 73 in which the rotational shaft 20 is inserted, and a combination protrusion units 64 and 74 having an outer diameter corresponding to an inner diameter of the inner space (V) of the cylinder 10 and having a certain height formed at the other side of the bearing bodies 61 and 71 .
  • Vane slots 65 and 75 in which the vanes 40 and 41 are inserted, are formed at the bearing bodies 61 and 71 , and each one side of the vane slots 65 and 75 correspond to an outer circumferential face of the combination protrusion units 64 and 74 .
  • a discharge passage 12 is penetratingly formed at the bearing bodies 61 and 71 of the first and second bearing, and the opening and closing unit 50 for opening and closing the discharge hole is coupled to the bearing bodies 61 and 71 by being in contact with the side portion of the bearing bodies.
  • vanes 40 and 41 are respectively inserted into the vane slots 65 and 75 of the first and second bearings 60 and 70 , and the vanes 40 and 41 are elastically supported by an elastic support unit 43 .
  • the partition plate 30 As the partition plate 30 is rotated in-the inner space (V) of the cylinder assembly (K), the first space 13 and the second space 14 are changed into suction areas 13 a and 14 a and compression areas 13 b and 14 b and the suction passage 11 penetratingly formed in the cylinder bodies 61 and 71 of the cylinder 10 communicates with the first space 13 and the second space 14 , so that a refrigerant gas is sucked, compressed and discharged through the discharge passage 12 .
  • the conventional art has such a structure that the combination protrusion units 64 and 74 of the first and second bearings 60 and 70 are inserted into the cylinder 10 .
  • the combination protrusion units 64 and 74 of the first and second bearings 60 and 70 need to be formed thick. But in such a case, the path of the discharge passage 12 , that is, a dead volume, is increased only to make a large re-expansion loss, resulting in degradation of a compression efficiency.
  • a cylinder assembly of a compressor including: a cylinder having a cylindrical inner space partitioned into a first space and a second space as partition plate of a rotational shaft is inserted thereinto and a step insertion portion formed at both sides thereof in a ring shape; a first bearing having the rotational shaft coupled at a central portion and being inserted to be coupled into the step insertion portion formed at one side of the cylinder so as to cover the inner space of the cylinder; and a second bearing having the rotational shaft coupled at the central portion thereof and being inserted to be coupled into the step insertion portion formed at the other side of the cylinder so as to cover the inner space of the cylinder.
  • a cylinder assembly of a compressor including: a cylinder having a cylindrical inner space partitioned into a first space and a second space as partition plate of a rotational shaft is inserted thereinto and a step insertion portion formed at both sides thereof in a ring shape; a first bearing having the rotational shaft coupled at a central portion and being inserted to be coupled into the step insertion portion formed at one side of the cylinder so as to cover the inner space of the cylinder; a second bearing having the rotational shaft coupled at the central portion thereof and being inserted to be coupled into the step insertion portion formed at the other side of the cylinder so as to cover the inner space of the cylinder; vanes respectively inserted into the first and second bearings and changing the first and second spaces of the cylinder into a suction area and a compression area as the partition plate coupled to the rotational shaft is rotated; an elastic support unit elastically coupled between the first and second bearings and the vanes; and an opening and closing unit for opening and
  • FIG. 1 is a front sectional view of a compression mechanism unit of a compressor in accordance with a conventional art
  • FIG. 2 is a plan view of the compression mechanism unit of a compressor in accordance with the conventional art
  • FIG. 3 is an exploded perspective view of the compression mechanism unit of a compressor in accordance with the conventional art
  • FIG. 4 is a front sectional view of a compression mechanism unit of a compressor having a cylinder assembly in accordance with the present invention
  • FIG. 5 is a plan view of the compression mechanism unit of a compressor having a cylinder assembly in accordance with the present invention.
  • FIG. 6 is an exploded perspective view of the compression mechanism unit of a compressor having a cylinder assembly in accordance with the present invention.
  • FIGS. 4, 5 and 6 illustrate compression mechanism unit of a compressor having a cylinder assembly in accordance with a preferred embodiment of the present invention.
  • a compression mechanism unit of the compressor includes a cylindrical inner space (W) therein, and a rotational shaft 20 is penetratingly inserted into the central portion of a cylinder assembly (R) having a suction passage 111 and a discharge passage 112 respectively communicating with the inner space (W).
  • the rotational shaft 20 includes a partition plate 30 formed with a waveform curved face in a sine wave form at one side of the shaft portion 21 having a certain length.
  • the partition plate 30 is positioned in the inner space (W) of the cylinder assembly (R), so that the inner space (W) is partitioned into first and second spaces 113 and 114 .
  • Vanes 40 and 41 having a certain thickness and a certain area are insertedly coupled at both sides of the cylinder assembly (R).
  • Both sides of the vanes 40 and 41 are respectively in contact with an inner wall of the inner space (W) of the cylinder assembly (R) and an outer circumferential face of the rotational shaft 20 and elastically supported so that their lower surfaces are constantly come in contact with the contact surface of the partition plate 30 . Accordingly, as the partition plate 30 is rotated, the first and second spaces 113 and 114 are changed into the suction areas 113 a and 114 a and the compression areas 113 b and 114 b.
  • An opening and closing unit 50 is coupled at both sides of the cylinder assembly (R) so as to discharge a gas compressed in the compression areas 113 b and 114 b of the first and second spaces 113 and 114 by opening and closing the discharge passage 112 .
  • the cylinder assembly (R) includes: a cylinder 110 having a cylindrical inner space (W) in a cylinder body ( 115 ) formed in a certain shape so that the partition plate 30 can be inserted and a step insertion portion 116 formed to have a step in a ring shape at both sides of the cylinder body 115 ; a first bearing 160 having supports units 162 and 172 formed protruded in a ring shape with a certain height at the center of bearing bodies 161 and 171 with an outer diameter corresponding to an inner diameter of the cylinder step insertion portion 116 and a certain thickness, shaft insertion holes 163 and 173 formed inside the support units 162 and 172 into which the rotational shaft 20 is inserted, and vane slots 164 and 174 formed at each one side of the bearing bodies 161 and 171 , into which the vanes 40 and 41 are inserted; and a second bearing 170 formed in a shape corresponding to the first bearing 160 and coupled in the opposite shape to the cylinder
  • the inner diameter of the step insertion portion 116 of the cylinder 110 is larger than the inner diameter of the inner space (W).
  • the rotational shaft 20 is inserted into the shaft insertion hole 173 and insertedly coupled into the step insertion portion 116 of the other side so as to cover the other side of the inner space (W) of the cylinder 110 .
  • the discharge passage 112 is formed at the bearing bodies 161 and 171 of the first and second bearings 160 and 170 , and an opening and closing unit 50 is coupled at the side portion so as to open and close the discharge passage 112 .
  • the suction passage 111 is formed at one side of the cylinder 110 so as to suck a gas.
  • the vanes 40 and 41 are respectively inserted into the vane slots 164 and 174 of the first and second bearings 160 and 170 .
  • the vanes 40 and 41 are elastically supported by the elastic support unit 43 .
  • the inner space (W) of the cylinder 110 is covered from both sides and the first bearing 160 and the second bearing 170 supporting the rotational shaft 20 are insertedly coupled into the step insertion portion 116 formed at both sides of the body 115 of the cylinder 110 .
  • a high temperature and high pressure gas compressed inside the inner space (W) of the cylinder 110 is prevented from leaking between the cylinder 110 and the first and second bearings 160 and 170 , and when the cylinder 80 and the first and second bearings 160 and 170 are coupled, the concentricity becomes accurate.
  • the first and second bearings 160 and 170 are coupled in a state of being inserted into the step insertion portion 116 of the cylinder 110 , the first and second bearings 160 and 170 has a relatively reduced thickness, so that the volume of the discharge passage 112 penetratingly formed in the first and second bearings 160 and 170 can be relatively reduced.
  • the cylinder assembly of a compressor of the present invention has many advantages.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
US10/296,384 2001-06-04 2002-06-03 Cylinder assembly of compressor Abandoned US20030138340A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2001-0031106A KR100417584B1 (ko) 2001-06-04 2001-06-04 압축기의 실린더 조립체
KR2001/31106 2001-06-04

Publications (1)

Publication Number Publication Date
US20030138340A1 true US20030138340A1 (en) 2003-07-24

Family

ID=19710355

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/296,384 Abandoned US20030138340A1 (en) 2001-06-04 2002-06-03 Cylinder assembly of compressor

Country Status (7)

Country Link
US (1) US20030138340A1 (ko)
EP (1) EP1392979A1 (ko)
JP (1) JP2004522060A (ko)
KR (1) KR100417584B1 (ko)
BR (1) BR0205518A (ko)
CA (1) CA2420146A1 (ko)
WO (1) WO2002099282A1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070243093A1 (en) * 2004-09-30 2007-10-18 Sanyo Electric Co., Ltd. Compressor
CN100434712C (zh) * 2004-06-09 2008-11-19 乐金电子(天津)电器有限公司 密封式压缩机的冷媒气体防泄漏结构
CN100455801C (zh) * 2004-06-09 2009-01-28 乐金电子(天津)电器有限公司 密闭型压缩机的气体泄漏防止装置
CN101372965B (zh) * 2004-09-30 2011-05-25 三洋电机株式会社 压缩机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100375845C (zh) * 2003-06-17 2008-03-19 乐金电子(天津)电器有限公司 压缩机的挡板槽加工方法
JP4663293B2 (ja) * 2004-11-01 2011-04-06 三洋電機株式会社 圧縮機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853853A (en) * 1954-11-09 1958-09-30 Richard H Ford Coaxial combustion products turbine
US3404632A (en) * 1965-02-04 1968-10-08 Renou Dardel Rotary volumetric pump
US4047859A (en) * 1976-08-16 1977-09-13 Chandler Evans Inc Axial vane pump with non-rotating vanes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54108914A (en) * 1978-02-15 1979-08-27 Mitsubishi Electric Corp Volumetric compressor
DE3418708A1 (de) * 1983-05-21 1984-11-22 Sine Pumps N.V., Curacao, Niederländische Antillen Pumpe
JPS6460791A (en) * 1987-08-31 1989-03-07 Nippon Denso Co Compressor
JPH0192597A (ja) * 1987-10-02 1989-04-11 Nippon Denso Co Ltd 圧縮機
BR0110375B1 (pt) * 2000-04-25 2010-06-29 compressor.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853853A (en) * 1954-11-09 1958-09-30 Richard H Ford Coaxial combustion products turbine
US3404632A (en) * 1965-02-04 1968-10-08 Renou Dardel Rotary volumetric pump
US4047859A (en) * 1976-08-16 1977-09-13 Chandler Evans Inc Axial vane pump with non-rotating vanes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100434712C (zh) * 2004-06-09 2008-11-19 乐金电子(天津)电器有限公司 密封式压缩机的冷媒气体防泄漏结构
CN100455801C (zh) * 2004-06-09 2009-01-28 乐金电子(天津)电器有限公司 密闭型压缩机的气体泄漏防止装置
US20070243093A1 (en) * 2004-09-30 2007-10-18 Sanyo Electric Co., Ltd. Compressor
US20080031764A1 (en) * 2004-09-30 2008-02-07 Sanyo Electric Co., Ltd. Compressor
US7488165B2 (en) * 2004-09-30 2009-02-10 Sanyo Electric Co., Ltd. Compressor having back pressure vane controlled for improving oil distribution
CN101372965B (zh) * 2004-09-30 2011-05-25 三洋电机株式会社 压缩机

Also Published As

Publication number Publication date
BR0205518A (pt) 2003-07-08
EP1392979A1 (en) 2004-03-03
KR20020094240A (ko) 2002-12-18
KR100417584B1 (ko) 2004-02-05
JP2004522060A (ja) 2004-07-22
WO2002099282A1 (en) 2002-12-12
CA2420146A1 (en) 2002-12-12

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AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, YOUNG-JONG;HA, JONG-HUN;AHN, BYUNG-HA;REEL/FRAME:013924/0048

Effective date: 20021111

STCB Information on status: application discontinuation

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