US3743454A - Rotary compressor - Google Patents

Rotary compressor Download PDF

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Publication number
US3743454A
US3743454A US00218721A US3743454DA US3743454A US 3743454 A US3743454 A US 3743454A US 00218721 A US00218721 A US 00218721A US 3743454D A US3743454D A US 3743454DA US 3743454 A US3743454 A US 3743454A
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US
United States
Prior art keywords
vane
rotor
housing
spring
extending
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.)
Expired - Lifetime
Application number
US00218721A
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English (en)
Inventor
D Rinehart
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US3743454A publication Critical patent/US3743454A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • 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

Definitions

  • ABSTRACT A rotary Compressor comprising a cylinder, a vane slid- [52] us. Cl. 418/248 bly mo n e in the cylindrical wall of the cylinder and [51] Int. Cl F01c 1/00, F04c' 1/00 a pring to bias th vane into engagement with an ec- [58] Field of Search 418/248 centrically rotatable rotor.
  • the spring is C-shaped and has one end mounted in the vane and the other diamet- [56] References Cited rically located and arranged in the stationary member to pivotally move in response to movement of the vane.
  • the present invention relates to rotary compressors and is more particularly concerned with the hermetic rotary compressor particularly adapted for use in refrigerating systems and the like.
  • a well-known type of rotary compressor comprises a cylindrical wall defining a compression cylinder, a rotor eccentrically mounted in the cylinder and a vane slidably mounted on the cylindrical wall for engagement of the inner end thereof with the periphery of the rotor to divide the cylinder into a high-pressure side and a low-pressure side.
  • one or more compression springs positioned between the outer end of the vane and a suitable, fixed support means.
  • a primary object of the present invention is to provide a rotary compressor including improved vane biasing means which is inexpensive, and requires a minimum safe spring force over a large range of compressor displacement.
  • SUMMARY OF THE INVENTION compressor comprises cylindrical and end walls defining a compression cylinder, a rotor eccentrically rotatable within the cylinder and a radial slot in the cylindrical wall which slidably receives a radial extending vane having an inner end continuously engaging the periphery of the rotor to divide the compression cylinder into a high and low pressure side.
  • the radially projecting portion includes a spring receiving recess having its axis parallel to the compressor axis. The vane is maintained BRIEF DESCRIPTION OF THE DRAWING In the accompanying drawing:
  • FIG. 1 is an elevational view partly in cross section of a portion of a hermetic refrigerant compressor incorporating the present invention.
  • the compressor 11 includes a cylindrically shaped housing 14 which is centrally supported in the casing 10 by radially projecting portions or arms 16 and 17 formed on the bottom portion of the housing 14 so as to locate the upper surface 18 approximately at the axial center of the housing 14.
  • Located centrally in the housing 14 is an inner cylindrical wall 19 which in combination with the upper and lower end walls or plates 21 and 22 defines an annular compression or cylinder chamber 23.
  • a rotor 24 driven by an eccentric 25 on the shaft 12 is contained within the chamber 23.
  • a vane 26 slidably disposed within a radial slot 27 is adapted to engage the periphery of rotor 24 and divide the cylinder into a low pressure side 28 and a high pressure side 29.
  • the slot 27 extends through the wall 19 of the housing 14 and into the arm 17 so lhat the lower portion of the vane 26 located beyond the periphery of the housing 14 is supported therein.
  • Such a hermetic compressor is particularly adapted to be connected to a refrigeration system so as to withdraw low pressure or gaseous refrigerant from the sys tem through a suction line 31 having an outlet port 32 communicating with the low pressure side 28 of the compression chamber through valve 33 and to discharge high pressure refrigerant through a valve controlled discharge port 34 and the interior of the casing 10.
  • FIG. 2 is a sectional view along line 2-2 of FIG. 1.
  • this means for maintaining the vane 26 in engagement with the rotor 24 comprises a generally C-shaped spring 37, having one end 38 located 180 from the vane 26 and the other end 39 engaged with the outer end of the vane 26 for movement therewith.
  • Located in the portion 16 of the housing 14 diametrically opposite from the vane 26 is a hole or recess 41 extending through the housing '14 and aligned parallel to the axis of shaft 12.
  • Located in the recess 41 is an arm 42 formed on the end 38 of the spring 37.
  • the arm 42 is perpendicular to the spring 37 and extends downwardly from the end 38. Bent radially inwardly from the end 39 of the spring 37 is an arm 43 (FIG.
  • the dimension between the spring ends 38 and 39 changes during each revolution of the rotor 24 as the resulting reciprocating action of the vane 26 causes the spring 37 to stretch as the end 39, carried on the outer edge of the reciprocating vane, is pulled away from the end 38 and its arm 42 located in the recess 41 of the stationary portion 16.
  • the end 38 of the spring 37 is rotated and allowed to pivot about the arm 42 on the surface of the recess 41.
  • This pivoting motion of arm 42 on the surface of recess 41 eliminates any twisting action that would be present in a rigidly held spring.
  • a tab portion 45 is bent radially inwardly from the free end of arm 42 and as assembled is located radially inwardly from the hole 41.
  • the arm 43 is inserted into the recess 44 and the arm 42 is then placed in the hole 41.
  • the dimension of the recess 44 is greater than the tab portion 45.
  • a hermetic rotary compressor comprising a cylindrical housing having radially extending support arms projecting from the lower axial end portion of the housing for supporting the compressor in a casing, a cylindrical inner wall in the housing and end walls defining a cylinder, a rotor eccentrically rotatable within said cylinder, the housing having a radial slot extending the entire axial dimension of said housing through the cylindrical wall and into a portion of one of the support arms, a vane slidably mounted in the slot for engagement of the inner end with the periphery of the rotor;
  • the other radially extending arm of the housing having a passage diametrically opposite from the vane and aligned parallel to the axis of the rotor and extending through the arm;
  • spring means including a C-shaped spring section located in a plane which is perpendicular to the axis of said rotor and which intersects the recess for biasing the vane into engagement with the rotor; a radially inwardly projecting tab at one end of the spring section extending into the recess in the vane;
  • the other end of the spring section having a portion projecting downwardly perpendicular to the spring section and positioned in the passage in the housmg;
  • the projecting portion being arranged in the passage to pivotally move in response to movement of said vane during each revolution of the rotor whereby twisting of the spring adjacent the projecting portion is eliminated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
US00218721A 1972-01-18 1972-01-18 Rotary compressor Expired - Lifetime US3743454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21872172A 1972-01-18 1972-01-18

Publications (1)

Publication Number Publication Date
US3743454A true US3743454A (en) 1973-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00218721A Expired - Lifetime US3743454A (en) 1972-01-18 1972-01-18 Rotary compressor

Country Status (5)

Country Link
US (1) US3743454A (enrdf_load_html_response)
JP (1) JPS5610474B2 (enrdf_load_html_response)
DE (1) DE2301609A1 (enrdf_load_html_response)
FR (1) FR2168794A5 (enrdf_load_html_response)
IT (1) IT978144B (enrdf_load_html_response)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245459A1 (de) * 1981-12-08 1983-06-16 Sanyo Electric Co., Ltd., Moriguchi, Osaka Hermetisch abgedichteter rotationskompressor
US5129799A (en) * 1991-09-09 1992-07-14 General Electric Company Torsional vane spring
US5408839A (en) * 1990-03-30 1995-04-25 Kabushiki Kaisha Toshiba Refrigerant compressor
US20060140791A1 (en) * 2004-12-29 2006-06-29 Deming Glenn I Miniature rotary compressor, and methods related thereto
US20110209477A1 (en) * 2010-03-01 2011-09-01 Frazier Scott R Rotary compressor-expander systems and associated methods of use and manufacture, including integral heat exchanger systems
CN104265374A (zh) * 2014-09-24 2015-01-07 周觉明 具有转轮传动活塞变速机构的流体动力机械
EP2955324A1 (en) * 2014-06-10 2015-12-16 Round Shine Industrial Co., Ltd. Multi-follower rotary compressor and sectional-compressing method for the same
US9551292B2 (en) 2011-06-28 2017-01-24 Bright Energy Storage Technologies, Llp Semi-isothermal compression engines with separate combustors and expanders, and associated systems and methods

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5422167Y2 (enrdf_load_html_response) * 1974-11-11 1979-08-03
JPS52104113U (enrdf_load_html_response) * 1976-02-05 1977-08-08

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724548A (en) * 1953-04-01 1955-11-22 Gen Electric Compressor oil pump
US3423013A (en) * 1966-08-25 1969-01-21 Gen Electric Rotary compressor
US3532448A (en) * 1969-03-18 1970-10-06 Gen Electric Rotary compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724548A (en) * 1953-04-01 1955-11-22 Gen Electric Compressor oil pump
US3423013A (en) * 1966-08-25 1969-01-21 Gen Electric Rotary compressor
US3532448A (en) * 1969-03-18 1970-10-06 Gen Electric Rotary compressor

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245459A1 (de) * 1981-12-08 1983-06-16 Sanyo Electric Co., Ltd., Moriguchi, Osaka Hermetisch abgedichteter rotationskompressor
US5408839A (en) * 1990-03-30 1995-04-25 Kabushiki Kaisha Toshiba Refrigerant compressor
US5129799A (en) * 1991-09-09 1992-07-14 General Electric Company Torsional vane spring
US20060140791A1 (en) * 2004-12-29 2006-06-29 Deming Glenn I Miniature rotary compressor, and methods related thereto
US20110217197A1 (en) * 2010-03-01 2011-09-08 Frazier Scott R Rotary compressor-expander systems and associated methods of use and manufacture, including two-lobed rotor systems
US20110209480A1 (en) * 2010-03-01 2011-09-01 Frazier Scott R Rotary compressor-expander systems and associated methods of use and manufacture
US20110209477A1 (en) * 2010-03-01 2011-09-01 Frazier Scott R Rotary compressor-expander systems and associated methods of use and manufacture, including integral heat exchanger systems
US9057265B2 (en) 2010-03-01 2015-06-16 Bright Energy Storage Technologies LLP. Rotary compressor-expander systems and associated methods of use and manufacture
US9062548B2 (en) 2010-03-01 2015-06-23 Bright Energy Storage Technologies, Llp Rotary compressor-expander systems and associated methods of use and manufacture, including integral heat exchanger systems
US9551292B2 (en) 2011-06-28 2017-01-24 Bright Energy Storage Technologies, Llp Semi-isothermal compression engines with separate combustors and expanders, and associated systems and methods
EP2955324A1 (en) * 2014-06-10 2015-12-16 Round Shine Industrial Co., Ltd. Multi-follower rotary compressor and sectional-compressing method for the same
CN104265374A (zh) * 2014-09-24 2015-01-07 周觉明 具有转轮传动活塞变速机构的流体动力机械
CN104265374B (zh) * 2014-09-24 2019-11-15 南通金鼎天轮动力科技有限公司 具有转轮传动活塞变速机构的流体动力机械

Also Published As

Publication number Publication date
FR2168794A5 (enrdf_load_html_response) 1973-08-31
JPS4882413A (enrdf_load_html_response) 1973-11-05
IT978144B (it) 1974-09-20
JPS5610474B2 (enrdf_load_html_response) 1981-03-07
DE2301609A1 (de) 1973-07-26

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