EP0451230B1 - Compresseur pour refrigerateurs domestiques - Google Patents

Compresseur pour refrigerateurs domestiques Download PDF

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Publication number
EP0451230B1
EP0451230B1 EP90914562A EP90914562A EP0451230B1 EP 0451230 B1 EP0451230 B1 EP 0451230B1 EP 90914562 A EP90914562 A EP 90914562A EP 90914562 A EP90914562 A EP 90914562A EP 0451230 B1 EP0451230 B1 EP 0451230B1
Authority
EP
European Patent Office
Prior art keywords
intake
cylinder block
port
lower half
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.)
Expired - Lifetime
Application number
EP90914562A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0451230A1 (fr
Inventor
Traian Novolan
Ilie Ungureanu
Petru Nistor
Dumitru Bordea
Ioan Paulescu
Matei Sandu
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.)
Arctic SA
Original Assignee
S C Arctic S A Gaesti
Arctic SA
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 S C Arctic S A Gaesti, Arctic SA filed Critical S C Arctic S A Gaesti
Publication of EP0451230A1 publication Critical patent/EP0451230A1/fr
Application granted granted Critical
Publication of EP0451230B1 publication Critical patent/EP0451230B1/fr
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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0261—Hermetic compressors with an auxiliary oil pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings

Definitions

  • the present invention relates to a compressor for domestic refrigerators comprising a carcass formed by a lower half-carcass and an upper half-carcass hermetically assembled, an electric motor mounted elastically in the lower half-carcass, said motor having a shaft directed towards the top and provided with an orifice for transferring the oil from the lower half-carcass to the upper half-carcass, an assembly formed by a cylinder block mounted on the engine and a piston connected to an eccentric which performs a back-and-forth movement, the cylinder block being provided with an inlet orifice at one of its ends.
  • a similar compressor, said to be hermetic, is described for example in DE-A-3,715,661.
  • Hermetic compressors are known for domestic refrigerators, operating on freon, which consist mainly of a carcass, inside which an electric motor drives, by means of a shaft, an eccentric which, in turn, drives a piston inside a cylinder block.
  • the suction of the freon, which constitutes the working agent, is carried out by a pipe which enters a body which supports the whole assembly.
  • Lubrication is obtained using a pump driven by a shaft, and the assembly of the assembly inside the carcass is carried out by springs arranged radially or perpendicularly to the horizontal plane, these springs being fixed by rings mounted on the carcass and on the above-mentioned assembly.
  • the electrical energy is supplied by a three-pole terminal, located near the suction pipe through which the working agent of the evaporator circulates.
  • the object of the invention is to increase the storage space in the refrigeration cabinet, simultaneously with an increase in refrigeration efficiency and a reduction in energy expenditure.
  • the compressor is formed of a carcass A in which are located: a suction body B and a pump C, with an electric motor 1 and a cylinder block 2.
  • the carcass A is formed by the upper half-carcass 3 and the lower half-carcass 4, sealed in a known manner, such as for example welding.
  • the half-carcass 3 has lower projections, located on either side of the major axis thereof, and the half-carcass 4, is provided with a small orifice b and a large orifice c, diametrically opposite, having centers located in the same plane, as well as planar surfaces, so placed that they are located along the vertices of an isosceles trapezoid.
  • the half-carcass 3 has a lower oval shaped portion e and an asymmetrical upper portion f to attenuate the frequencies which have harmful effects on hearing.
  • the rotational movement of the motor 1 is transmitted via a shaft 5 and respectively of a slide 6 to a piston 7 located in the cylinder block 2.
  • the shaft 5 has a counterweight g, and, near that here, diametrically opposite, is an eccentric h, on which the slide 6 is mounted.
  • the cylinder block 2 is provided with an axial hole i, near which there are cavities j and k, which communicate with each other, by an open, short channel 1.
  • the cylinder block 2 On either side of the cavities j and k, the cylinder block 2 has blind holes m and n, large and, respectively, small.
  • the counterweight g partially enters an external release groove o, formed in the cylinder block.
  • the cylinder block 2 has a greater prominence p located near the portion f of the half-carcass 3.
  • Channels r having axes parallel to each other and blind holes s, are formed at a frontal surface q in the cylinder block 2.
  • the cylinder block 2 is fixed to a body 8, using a few screws, which are not shown in the drawings, introduced by drilled holes, the positioning and adjustment being made using pins, which do not are not shown in the drawings, placed in the blind holes n with grooves, and between the cylinder block 2 and the body 8 is mounted a gasket 9 elastic, flat, sealing.
  • the body 8 has spurs t directed upwards, placed at the level of the prominences a of the half-carcass 3, as well as cavities located at level j and k, a situation which is not shown in the drawing.
  • the body 8 has a hub u in which partially penetrates an upper end v of a shaft 5, and the counterweight g is located above the body 8.
  • holes w located near the hub u, at least two of which are made at the level of the cylinder block 2.
  • This has an internal cavity and an axial release groove not shown in the drawings, and into the axial groove penetrates the neck y of a part 12, belonging to the body B, which also has a cover 13, sealed from in a known manner, for example by gluing the piece 12.
  • the cover 13 has longitudinal z-ribs, located symmetrically with respect to its axis of symmetry, and at the bottom there is a prominence a 'having the shape of a drop, whose axis of symmetry coincides with that of the cover 13, and at the level of this prominence a ', in the cover is made a suction hole b' delimited by a converging wall c ', the center of which coincides with the center of 'a portion of, lower, of the prominence a'.
  • the latter has a channel f', in which partially enters the collar e '.
  • a hole g 'upper under which is located a prominence h ', positioning the hole g', relative to the valve chair.
  • the part 12 has walls j ', k' and vertical, exterior and interior, which together with walls m 'and n' vertical and walls o 'and p' inclined upper and lower respectively , delimit compartments q 'and r'.
  • the walls k 'and the interior are connected by a median wall, which, with the walls k' and l ', delimits a median compartment t'.
  • a median wall which, with the walls k' and l ', delimits a median compartment t'.
  • In the cover 13 are also provided vertical channels u ′ and v ′, into which the walls k ′ and l partially enter, so that the compartment t ′ is separated from the outside by the cover 13.
  • the compartment t ' is in communication with the compartments q' and r ', to reduce the noise level during the circulation of the refrigerant.
  • the suction hole b ' has its center located on the same axis as that where the center of the hole b is placed, made in the half-carcass 4.
  • the pump C is formed of a body 14 of revolution, having portions b '' and c '' upper cylindrical and in lower warhead. At the portion c '' there are fins of radial.
  • the body 14 has diametrically opposite longitudinal fins e ''.
  • the body 14 has spurs f '', diametrically opposite, which penetrate into housings g '', practiced in the shaft 5, so that in an axial channel h '', practiced in tree 5, partially penetrates the portion b ''.
  • the body 14, in the shaft 5, is held in the mounted position by means of an elastic ring 15, which is in contact with a wall i '', of form frustoconical, to ensure the frontal contact of the body 14 with the shaft 5.
  • lower guides 16 fitted into supports 17, thus profiled inside, which they retain in the working position of the compression springs 18 also fixed to upper guides 19, made integral in turn , two by two, by one of the plates 20 and 21.
  • the guides 16 and 19 have their axes in the extension and are placed at the vertices of an isosceles trapezoid, having the center of gravity on the vertical direction of the center of gravity of the suspended mass.
  • the plates 20 and 21 are so dimensioned that they allow only limited displacements in a horizontal plane, by bringing them into contact with the half-carcass 4.
  • the body 8 is fixed on the plates 20 and 21 using screws 22 which also enter the motor 1.
  • the power supply of the motor 1 is carried out using a three-pole terminal 23, placed in the hole c of the half-carcass, the contacting of the terminal 23 with the motor being made very close to it. this.
  • the pump C is rotated by the shaft 5, so that the oil is drawn upwards through an orifice j '' lower from the body 14, and transported by a channel k '' in the form of a spiral, which exists inside the shaft 5, until contact with the half-carcass 3.
  • the curtain formed by drops of oil descends and comes into contact with the assembly supported by the half-carcass 4, and with the interior of the carcass A, l oil also circulating through the windows w made in the body 8.
  • the refrigerant is transported by a tube 24, connected to the half-carcass 4, at the level of the suction orifice b formed therein, and enters through the hole b 'to flow mainly through the compartment t' median, up to the level of the hole g 'through which it exits, entering the cylinder block 2, where it is compressed and pushed into the cavity of the cover 11, from which it is discharged, after the execution of a circulation through the orifices r and through the cavities j and k, in a tube 25, connected to the cover 11.
  • the oil in compartments q 'and r' can flow during the stop through the orifices a '' and the oil is directed by the ribs z because of the shape of the prominence a 'which bypasses the hole b '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP90914562A 1989-10-06 1990-09-21 Compresseur pour refrigerateurs domestiques Expired - Lifetime EP0451230B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RO141894A RO100617B1 (ro) 1989-10-06 1989-10-06 Compresor pentru frigidere casnice
RO141894 1989-10-06
PCT/RO1990/000002 WO1991005165A1 (fr) 1989-10-06 1990-09-21 Compresseur pour refrigerateurs domestiques

Publications (2)

Publication Number Publication Date
EP0451230A1 EP0451230A1 (fr) 1991-10-16
EP0451230B1 true EP0451230B1 (fr) 1994-04-06

Family

ID=20125759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914562A Expired - Lifetime EP0451230B1 (fr) 1989-10-06 1990-09-21 Compresseur pour refrigerateurs domestiques

Country Status (5)

Country Link
US (1) US5228843A (ro)
EP (1) EP0451230B1 (ro)
DE (1) DE69007969D1 (ro)
RO (1) RO100617B1 (ro)
WO (1) WO1991005165A1 (ro)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5322419A (en) * 1989-10-06 1994-06-21 Arctic S.A. Compressor for domestic refrigerators
US5879076A (en) * 1995-02-08 1999-03-09 Flexalite Technology Corporation Method and appartus for light transmission
KR0153343B1 (ko) * 1995-10-13 1999-03-20 김광호 왕복동형 압축기
CN1109821C (zh) * 1997-10-23 2003-05-28 Lg电子株式会社 密封式压缩机中的吸油结构
JP4682441B2 (ja) * 2001-05-07 2011-05-11 パナソニック株式会社 密閉型電動圧縮機
JP4101505B2 (ja) * 2001-12-05 2008-06-18 松下冷機株式会社 密閉型圧縮機
CN1329664C (zh) * 2002-12-25 2007-08-01 乐金电子(天津)电器有限公司 旋转式压缩机的吸气结构
JP5945845B2 (ja) * 2011-04-11 2016-07-05 パナソニックＩｐマネジメント株式会社 密閉型圧縮機
CN102352830B (zh) * 2011-10-28 2014-06-18 黄石东贝电器股份有限公司 封闭式压缩机壳体

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306524A (en) * 1964-03-10 1967-02-28 Toskyo Sanyo Electric Co Ltd Hermetically sealed motor-compressor
DE1501026A1 (de) * 1966-03-22 1969-10-16 Danfoss As Federnd in seiner Kapsel aufgehaengter Motorverdichter fuer Kaeltemaschinen
US3663127A (en) * 1970-11-30 1972-05-16 Tecumseh Products Co Hermetic compressor oil cooling system
CA1006489A (en) * 1976-04-28 1977-03-08 Gerard M. Erkens Support bracket
US4086033A (en) * 1976-05-17 1978-04-25 White-Westinghouse Corporation Oil pump for motor compressor
JPS53130509A (en) * 1977-04-20 1978-11-14 Hitachi Ltd Totally-enclosed motor compressor
US4194264A (en) * 1978-07-26 1980-03-25 Gunter Stoffregen Door check device
US4209080A (en) * 1978-11-16 1980-06-24 Tecumseh Products Company Snap-fit lubricant pick-up tube for a motor compressor
IT1191233B (it) * 1982-09-02 1988-02-24 Sanyo Electric Co Motocompressore chiuso ermeticamente
IT1172782B (it) * 1983-12-12 1987-06-18 Necchi Spa Silenziatore per motocompressori
IT1179810B (it) * 1984-10-31 1987-09-16 Aspera Spa Gruppo motocompressore ermetico per circuiti frigoriferi
US4576555A (en) * 1984-11-13 1986-03-18 Tecumseh Products Company Oil dispersing device
DD229201A1 (de) * 1984-11-19 1985-10-30 Dkk Scharfenstein Veb Sauggasseparator fuer hermetische kaeltemittelverdichter
IT1184167B (it) * 1985-03-21 1987-10-22 Eurodomestici Ind Riunite Perfezionamento nei motocompressori sigillati per circuiti frigoriferi
IT1204203B (it) * 1986-05-22 1989-03-01 Necchi Spa Motocompressore ermetico alternativo

Also Published As

Publication number Publication date
EP0451230A1 (fr) 1991-10-16
US5228843A (en) 1993-07-20
DE69007969D1 (de) 1994-05-11
WO1991005165A1 (fr) 1991-04-18
RO100617B1 (ro) 1993-02-28

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