US20040191104A1 - Rotary compressor having a rotor with a sliding vane - Google Patents

Rotary compressor having a rotor with a sliding vane Download PDF

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Publication number
US20040191104A1
US20040191104A1 US10/395,391 US39539103A US2004191104A1 US 20040191104 A1 US20040191104 A1 US 20040191104A1 US 39539103 A US39539103 A US 39539103A US 2004191104 A1 US2004191104 A1 US 2004191104A1
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United States
Prior art keywords
rotor
segment
opposite
outlet
sliding vane
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
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US10/395,391
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English (en)
Inventor
Wen-Shao Hsu
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/395,391 priority Critical patent/US20040191104A1/en
Priority to EP03253261A priority patent/EP1479914A1/de
Publication of US20040191104A1 publication Critical patent/US20040191104A1/en
Abandoned legal-status Critical Current

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    • 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
    • F04C18/344—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 inner member
    • F04C18/3441—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation

Definitions

  • This invention relates to a rotary compressor, more particularly to a rotary compressor having a rotor with a sliding vane that extends radially through the rotating axis of the rotor.
  • FIG. 1 illustrates a conventional sliding-vane type rotary compressor 1 that includes a cylinder 11 formed with an inlet 112 and an outlet 113 , and a rotor 12 disposed eccentrically and rotatably in the cylinder 11 and formed with a plurality of angularly spaced apart slots 121 .
  • the cylinder 11 and the rotor 12 cooperatively define a chamber 14 therebetween.
  • a plurality of vanes 13 are respectively and slidably received in the slots 121 so as to divide the chamber 14 into a plurality of independent sub-chambers.
  • Each sub-chamber receives fluid from the inlet 112 upon passing by the inlet 112 .
  • the fluid in each sub- chamber is gradually compressed when the sub-chamber approaches to the outlet 113 , and is discharged at the outlet 113 to an external container (not shown).
  • a pressure-regulating valve (not shown) is connected to the container for controlling the pressure in the container.
  • the aforesaid conventional rotary compressor 1 is disadvantageous in that friction among the vanes 13 and an inner wall of the cylinder 11 is relatively large during rotation of the rotor 12 , which results in high temperature of the rotary compressor 1 , which has an adverse effect on the performance of the rotary compressor 1 , and which can result in a shorter service life for the rotary compressor 1 .
  • the object of the present invention is to provide a rotary compressor that can overcome the aforementioned drawback of the prior art.
  • a rotary compressor that comprises: a cylinder having an inner wall that defines an inner space therein, and formed with an inlet that is in fluid communication with the inner space, and an outlet which is spaced apart from the inlet and which is in fluid communication with the inner space; a rotor mounted rotatably in the inner space and defining a sliding space, the rotor and the inner wall of the cylinder cooperatively defining a chamber therebetween, the rotor being rotatable about an axis in a rotating direction, the chamber being in fluid communication with the inlet and the outlet, the sliding space being in spatial communication with the chamber, extending through the axis in a radial direction relative to the axis, and having two opposite ends opposite to each other in the radial direction, the rotor being eccentrically disposed in the inner space and being in close proximity to a portion of the inner wall at a position between the inlet and the outlet; and a sliding vane mounted slidingly in the sliding space,
  • FIG. 1 is a schematic top view of a conventional rotary compressor
  • FIG. 2 is an exploded perspective view of a rotary compressor embodying the present invention
  • FIG. 3 is a sectional side view of the rotary compressor of FIG. 2;
  • FIG. 4 is a top view of the rotary compressor of FIG. 2, which illustrates rotation of a sliding vane to a first position
  • FIG. 5 is a top view of the rotary compressor of FIG. 2, which illustrates rotation of the sliding vane to a second position
  • FIG. 6 is a sectional top view of the rotary compressor of FIG. 2, which illustrates rotation of the sliding vane to a third position
  • FIG. 7 is a top view of the rotary compressor of FIG. 2, which illustrates rotation of the sliding vane to a fourth position.
  • FIGS. 2 to 7 illustrate the preferred embodiment of a rotary compressor according to the present invention.
  • the rotary compressor includes: a cylinder 22 having an inner wall 24 that defines an inner space 20 therein, and formed with an inlet 26 that is in fluid communication with the inner space 20 , and an outlet 27 which is angularly spaced apart from the inlet 26 and which is in fluid communication with the inner space 20 ; a rotor 3 mounted rotatably in the inner space 20 and defining a sliding space 34 , the rotor 3 and the inner wall 24 of the cylinder 22 cooperatively defining a chamber 31 therebetween, the rotor 3 being rotatable about an axis 28 in a rotating direction, the chamber 31 being in fluid communication with the inlet 26 and the outlet 27 , the sliding space 34 being in spatial communication with the chamber 31 , extending through the axis 28 in a radial direction relative to the axis 28 , and having two opposite ends opposite to each other in the radial direction, the rotor 3 being eccentrically
  • a middle segment 313 is formed between the discharging segment 311 and the intake segment 312 (see FIG. 7) immediately after one of the opposite ends 42 , 43 of the sliding vane 4 passes by the inlet 26 , and becomes the next discharging segment when moved to communicate with the outlet 27 .
  • the sliding vane 4 is in the form of a plate that has an H-shaped portion 40 which includes parallel first and second leaves 42 ′, 43 ′ and a middle rib 41 interconnecting the first and second leaves 42 ′, 43 ′.
  • the first and second leaves 42 ′, 43 ′ are opposite to each other in the radial direction, and respectively define the opposite ends 42 , 43 of the sliding vane 4 .
  • the cross-section of the chamber 31 gradually increases from a position proximate to the portion 242 of the inner wall 24 to an opposite position 245 diametrically opposite to the portion 242 of the inner wall 24 , and gradually decreases from the opposite position 245 to the outlet 27 .
  • the rotor 3 is cylindrical in shape, and includes first and second halves 33 , 33 ′ which cooperatively define the sliding space 34 therebetween.
  • the cylinder 22 has opposite upper and lower open ends 221 , 222 and upper and lower sealing flanges 23 , 21 that are fixed sealingly and respectively to the upper and lower open ends 221 , 222 and that are respectively formed with central openings 230 , 210 .
  • the first and second halves 33 , 33 ′ of the rotor 3 are indented in an axial direction relative to the rotor 3 to form opposite upper and lower recesses 330 .
  • the rotary compressor further includes upper and lower bearings 231 , 211 that are respectively received in the central openings 230 , 210 in the upper and lower flanges 23 , 21 , and upper and lower journals 32 that respectively have upper and lower limiting flanges 320 which are respectively received in the upper and lower recesses 330 and which are secured to the rotor 3 , and upper and lower shafts 322 which extend respectively and outwardly of the cylinder 22 from the upper and lower limiting flanges 320 through the upper and lower bearings 231 , 211 .
  • Each of the upper and lower limiting flanges 320 has a periphery edge 3201 , and a pair of opposite radial slits 321 that extend inwardly and radially from the periphery edge 3201 .
  • the first and second leaves 42 ′, 43 ′ of the sliding vane 4 have upper and lower ends that are respectively received in the slits 321 in the upper and lower limiting flanges 320 .
  • a pulley 5 is connected to the upper shaft 322 of the upper journal 32 for driving the latter.
  • Each of the first and second halves 33 ( 33 ′) of the rotor 3 has opposite outer and inner surfaces 339 ( 339 ′), 331 ( 331 ′) extending angularly of the rotor 3 , and opposite first and second ends 337 ( 337 ′), 338 ( 338 ′) opposite to each other in the radial direction.
  • the first and second ends 337 ( 337 ′), 338 ( 338 ′) of each of the first and second halves 33 ( 33 ′) of the rotor 3 respectively confront the first and second leaves 42 ′, 43 ′ of the sliding vane 4 .
  • the rotor 3 further includes first and second tubular elements 335 , 335 ′, and is formed with a first channel 38 (see FIG.
  • the first channel 38 has a first segment 381 that is formed in the first half 33 of the rotor 3 , and a second segment 382 that is formed in the second half 33 ′ of the rotor 3 .
  • the first segment 381 of the first channel 38 has an inlet port 336 that is formed in the outer surface 339 of the first half 33 of the rotor 3 , and a first connecting port 334 that is formed in the inner surface 331 of the first half 33 of the rotor 3 .
  • the second segment 382 of the first channel 38 has a second connecting port 333 ′ that is formed in the inner surface 331 ′ of the second half 33 ′ of the rotor 3 and that is connected to and that is in fluid communication with the first connecting port 334 through the first tubular element 335 , and an outlet port 332 ′ that is formed in the first end 337 ′ of the second half 33 ′ of the rotor 3 and that confronts the first leaf 42 ′ of the sliding vane 4 .
  • the second channel 39 has a first segment 391 that is formed in the second half 33 ′ of the rotor 3 , and a second segment 392 that is formed in the first half 33 of the rotor 3 .
  • the first segment 391 of the second channel 39 has an inlet port 336 ′ that is formed in the outer surface 339 ′ of the second half 33 ′ of the rotor 3 , and a first connecting port 334 ′ that is formed in the inner surface 331 ′ of the second half 33 ′ of the rotor 3 .
  • the second segment 392 of the second channel 39 has a second connecting port 333 that is formed in the inner surface 331 of the first half 33 of the rotor 3 and that is connected to and that is in fluid communication with the first connecting port 334 ′ of the second channel 39 through the second tubular element 335 ′, and an outlet port 332 that is formed in the second end 338 of the first half 33 of the rotor 3 and that confronts the second leaf 43 ′ of the sliding vane 4 .
  • the inlet port 336 ( 336 ′) of the first segment 381 ( 391 ) of each of the first and second channels 38 ( 39 ) is disposed anteriorly of the respective one of the first and second leaves 42 ′, 43 ′ in the rotating direction, while the outlet port 332 ( 332 ′) of the second segment 382 ( 392 ) of each of the first and second channels 38 ( 39 ) is disposed posteriorly of the respective one of the first and second leaves 42 ′, 43 ′ in the rotating direction.
  • the fluid enters into the second channel 39 through the inlet port 336 ′ and is discharged at the outlet port 332 , which results in a counter force that pushes the second leaf 43 ′ in the rotating direction, and which offsets the aforesaid force, thereby maintaining balance of the sliding vane 4 during rotation of the rotor 3 .
  • the inner wall 24 of the cylinder 22 is divided into different segments which have different curvatures in such a manner that the sliding vane 4 can smoothly rotate from a first position shown in FIG. 7 through a second position shown in FIG. 4 (where the sliding vane 4 passed by the outlet 27 in the cylinder 22 ) to a third position (where the sliding vane 4 passes by the portion 242 of the inner wall 24 of the cylinder 22 ) shown in FIG. 5, and that the rotary compressor can be operated quietly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
US10/395,391 2003-03-25 2003-03-25 Rotary compressor having a rotor with a sliding vane Abandoned US20040191104A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/395,391 US20040191104A1 (en) 2003-03-25 2003-03-25 Rotary compressor having a rotor with a sliding vane
EP03253261A EP1479914A1 (de) 2003-03-25 2003-05-23 Flügelzellenverdichter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/395,391 US20040191104A1 (en) 2003-03-25 2003-03-25 Rotary compressor having a rotor with a sliding vane
EP03253261A EP1479914A1 (de) 2003-03-25 2003-05-23 Flügelzellenverdichter

Publications (1)

Publication Number Publication Date
US20040191104A1 true US20040191104A1 (en) 2004-09-30

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US10/395,391 Abandoned US20040191104A1 (en) 2003-03-25 2003-03-25 Rotary compressor having a rotor with a sliding vane

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US (1) US20040191104A1 (de)
EP (1) EP1479914A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943757A (zh) * 2012-10-23 2013-02-27 即墨市振华电机厂 摆动转子压缩机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004034919B3 (de) * 2004-07-09 2005-12-01 Joma-Hydromechanic Gmbh Einflügelvakuumpumpe
DE102005015721B3 (de) * 2005-03-31 2006-12-21 Joma-Hydromechanic Gmbh Vakuumpumpe
CN108916045B (zh) * 2018-07-18 2024-04-02 珠海格力电器股份有限公司 泵体组件、流体机械及换热设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1848670A (en) * 1932-03-08 Pitman counterbalance
US1972744A (en) * 1923-01-11 1934-09-04 Lister William Rotary piston and cylinder construction
US2410596A (en) * 1943-11-09 1946-11-05 Aaron C Bradford Sliding vane engine or pump
US3386648A (en) * 1967-01-31 1968-06-04 Walter J. Van Rossem Rotary vane type pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191122712A (en) * 1910-10-17 1911-11-30 Giulio Silvestri Improvements in and relating to Rotary Engines.
GB528034A (en) * 1939-12-06 1940-10-21 Gavin Ralston Improvements in rotary liquid pressure motors
US2282642A (en) * 1940-05-17 1942-05-12 Curtis Pump Co Vane structure for rotary pumps
EP0264778B1 (de) * 1986-10-18 1991-01-02 B a r m a g AG Flügelzellenpumpe
US5758501A (en) * 1995-03-08 1998-06-02 Jirnov; Olga Sliding-blade vapor engine with vortex boiler
DE20018958U1 (de) * 2000-11-07 2002-03-21 Joma-Hydromechanic GmbH, 72411 Bodelshausen Schieber zum gegenseitigen Trennen der beiden Kammern im Gehäuseraum einer Flügelzellenpumpe oder eines solchen Motors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1848670A (en) * 1932-03-08 Pitman counterbalance
US1972744A (en) * 1923-01-11 1934-09-04 Lister William Rotary piston and cylinder construction
US2410596A (en) * 1943-11-09 1946-11-05 Aaron C Bradford Sliding vane engine or pump
US3386648A (en) * 1967-01-31 1968-06-04 Walter J. Van Rossem Rotary vane type pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943757A (zh) * 2012-10-23 2013-02-27 即墨市振华电机厂 摆动转子压缩机

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EP1479914A1 (de) 2004-11-24

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STCB Information on status: application discontinuation

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