US3154245A - Hermetically sealed refrigerating machine - Google Patents

Hermetically sealed refrigerating machine Download PDF

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Publication number
US3154245A
US3154245A US175561A US17556162A US3154245A US 3154245 A US3154245 A US 3154245A US 175561 A US175561 A US 175561A US 17556162 A US17556162 A US 17556162A US 3154245 A US3154245 A US 3154245A
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Prior art keywords
cylinder
oil
pressure
capsule
piston
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Expired - Lifetime
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US175561A
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English (en)
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Roelsgaard Knud
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/902—Hermetically sealed motor pump unit

Definitions

  • HERMETICALLY SEALED REFRIGERATING MACHINE Filed Feb. 26, 1962 United States Patent 3,154,245 IERME'IZCALLY SEALED REFRIGERATENG MACHHNE Knnd Roelsgaard, Nordborg, Denmark, assignor to Danfoss ved ing. M. Qlausen, Nordhorg, Denmark, 2 company of Denmark Filed Feb. 26, 1962, Ser. No. 175,561 Claims priority, application Germany, Feb. 24, 1961, D 35,482 Claims. (Cl. 230-432)
  • This invention relates to a hermetically-sealed refrigerating machine of the type in which the pressure silencer or mufller is disposed in the interior of the capsule and in which the interior cavity of the capsule is under suction pressure.
  • a major problem in hermetically-enclosed refrigerating machines is the heat which tends to be produced interiorly of the hermetically-sealed capsule which encloses the compressor assembly. This heat is the result of heat emission from the electric motor, the heat of compression of the gas, and the heat of friction in the moving parts of the compressor.
  • the pressure muffler or silencer is connected in the pressure line and is provided exteriorly with heat insulation and/ or with means which hinder gas flow or the deposit of oil which would tend to transfer heat. A considerable part of the heat content of the compressed refrigerant is, in this manner, prevented from being transmitted into the interior of the capsule, and heating of the unit is thus reduced.
  • a reduction of temperature int riorly of the capsule is achieved by a re-arrangement of the parts of the compressor assembly.
  • the desired heat reduction is obtained by placing the muffier or silencer in the pressure line in a position such that it will be sheltered by the other parts of the refrigerating unit, thus protecting the muilier from oil sprays.
  • the sheltering which is provided in accordance with this invention is thus intended to comprise the shielding of the pressure mufiler so that it is kept free of the direct influence of these oil particles.
  • the gas flowing through the suction chamber interiorly of the capsule and carrying suspended particles of oil can transfer heat.
  • this slight heat transfer can be reduced considerably if the pressure mufder is disposed in such manner that the pressure mufller is substantially outside the area of flow of the suction gas present inside the capsule.
  • the compressor is mounted by means of springs 4 interiorly of the capsule 2 which has a cooperating cover 3 to provide a hermetically-sealed enclosure.
  • Springs 4 are fastened to the supporting element 5 of the motor stator, and element 5 is provided with a bearing (not shown) for the vertical motor-crankshaft 6.
  • Shaft 6 carries the rotor for the motor, only the stator 7 of which is shown.
  • On top of the supporting element 5 is mounted the cylinder 8 in which the piston 9 reciprocates.
  • the piston 9 is driven, through a Scotch yoke 18, by the crankpin 11, in known manner, and at the upper dead center position of the piston or compression zone of the cylinder there is provided an intermediate valve plate 12 containing the suctionand pressure-valves, which are not shown since they are of known construction and form no part of the present invention. Both valve chambers are located in the closing plate 13 of the cylinder 8.
  • a suction muwerr 1d shown by dotted lines, can be mounted on the cylinder.
  • a tube 15 leads to the pressure muffler 16 which, by means of a connecting line 17 is connected to a sinuous conduit section 18.
  • the pressure line can easily equalize any movements occurring between the cylinder and the point of passage of the pressure line through the wall of the capsule.
  • This passage is not shown but is located behind the cylinder 8.
  • the sucked-in gas is carried to the interior of the capsule through the inlet 19 and continues, through an inlet line which is not shown in order to avoid unnecessary complication of the drawing, to a valve chamber in the closing plate 13, or to a suction muffler connected to the valve chamber.
  • the pressure muffler 15 is disposed in such manner that it can be hit neither by the oil particles ejected at A nor by the oil particles ejected at B. It is sheltered from the area or range of emission of oil at A by the supporting element of the stator, especially the free end 23. It is sheltered from the area or range of emission of oil at B by the cylinder 8, and by the suction muffiers 14 when present upon the cylinder. If the shielding by the foregoing provisions should not be as completely suificient as desired, due to the circular form of the parts and 8, shielding plate 24, indicated on the drawing by a broken line, is advantageously mounted adjacent the pressure mufiier 16.
  • the principle of the present invention can be utilized not only in connection with refrigerant compressors but Wherever a reduction in the temperature inside the capsule of an enclosed motor compressor unit is required, for example in air compressors for paint spraying units, air compressors for auto repair shops, as Well as all other gas compressors. In all of these cases, an increase in capacity and an improvement in the lubrication of the shaft bearing can be obtained in relation to known compressor constructions.
  • the motor and the compressor per se are not part of the present invention and they can be of conventional construction, subject to the structural changes relating to heat removal described and illustrated which are characteristic of the present invention.
  • a typical motor compressor in which the present invention can be embodied is described, for example, in U.S. Patent No. 2,312,596.
  • the motor and compressor can also be, for example, of the construction shown in my above-mentioned application filed November 13, 1961, entitled Lubricating Device for a Motor'Compressor.
  • a hermetically-sealed refrigerating machine of the type comprising a hermetically-sealed capsule adapted to be placed under suction pressure having an inlet for refrigeration to be drawn into said capsule and containing a compressor unit comprising means defining a cylinder and having a pressure line leading therefrom and containing a piston reciprocable in said cylinder, a driving means for reciprocating said piston in said cylinder, means defining an oil sump adapted to contain a quantity of lubricating oil, means connected to said driving means for forming lubricating oil sprays from the oil in said pump to lubricate said driving means and said piston, the combination of a pressure mufiier disposed in the interior of said capsule in an area remote from said oil sump and from said compressor unit, said mufller being disposed connected in said pressure line leading from said cylinder for receiving refrigerant after compression in said compressor unit and being positioned in spaced relation with respect to said cylinder and the other component of said machine, and said pressure mufiler being
  • a hermetically-sealed refrigerating machine of the type comprising a hermetically-sealed capsule adapted to be placed under suction pressure having an inlet for refrigerant to be drawn into said capsule and containing a compressor unit comprising means defining a cylinder and having a pressure line leading therefrom and containing a piston reciprocable in said cylinder, a driving means for reciprocating said piston in said cylinder, means defining an oil sump adapted to contain a quantity of lubricating oil, means connected to said driving means for forming lubricating oil sprays from the oil in said sump to lubricate said driving means and said piston, the combination of a pressure mutfier disposed in the interior of said capsule in an area remote from said oil sump and from said compressor unit, said mufiler being disposed connected in said pressure line leading from said cylinder for receiving refrigerant after compression in said compressor unit and being positioned in spaced relation with respect to said cylinder and the other components of said machine, said' pressure muff
  • a hermetically-sealed refrigerating machine of the type comprising a hermetically-sealed capsule adapted to be placed under suction pressure having an inlet for refrigerant to be drawn into said capsule and containing a compressor unit comprising means defining a cylinder and having a pressure line leading therefrom and containing a piston reciprocable in said cylinder, a driving means comprising an electric motor for reciprocating said piston in said cylinder, means defining an oil sump adapted to contain a quantity of lubricating oil, means connected to said driving means for forming lubricating oil sprays from the oil in said sump to lubricate said driving means and said piston to the combination of a pressure mufiler disposed in the interior of said capsule in an area remote from said oil sump and from said compressor unit, said mufiler being disposed connected to said pressure line leading from said cylinder for receiving refrigerant after compression in said compressor unit and being positioned in spaced relation with respect to said cylinder and the other components of said machine, said pressure
  • a hermetically-sealed refrigerating machine of the type comprising a hermetically-sealed capsule adapted to be placed under suction pressure having an inlet for refrigerant to be drawn into said capsule and containing a compressor unit comprising means defining a cylinder and having a pressure line leading therefrom and containing a piston reciprocable in said cylinder, a driving means comprising an electric motor for reciprocating said piston in said cylinder, means defining an oil sump adapted to contain a quantity of lubricating oil, means connected to said driving means for forming lubricating oil sprays from the oil in said sump to lubricate said driving means and said piston, the combination of a pressure mufiier disposed in the interior of said capsule in an area remote from said oil sump and from said compressor unit, said muffler being disposed connected in said pressure line leading from said cylinder for receiving refrigerant after compression in said compressor unit and being positioned in spaced relation with respect to said cylinder and the other components of said machine,
  • a hermetically-sealed refrigerating machine of the type comprising a hermetically-sealed capsule adapted to be placed under suction pressure having an inlet for refrigerant to be drawn into said capsule and containing a compressor unit comprising means defining a cylinder and having a pressure line leading therefrom and containing a piston reciprocable in said cylinder, 2.
  • driving means for reciprocating said piston in said cylinder, means defining an oil sump adapted to contain a quantity of lubricating oil, means connected to said driving means for forming lubricating oil sprays from the oil in said pump to lubricate said driving means and said piston, the combination of a pressure mufiler disposed in the interior of said capsule in an area remote from said oil sump and from said compressor unit, said muflier being disposed connected in said pressure line leading from said cylinder for receiving refrigerant after compression in said compressor unit and being positioned in spaced relation with respect to said cylinder and the other components of said machine, said pressure mufiier being sheltered from said oil sprays produced by said spray-forming means by said cylinder and other components of the machine, said cylinder having a compression zone, said pressure mufiler being disposed close but spaced from said compression zone, and a shield on said muffler shielding it from oil spray to preclude any contact between oil spray and said pressure mufiler.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US175561A 1961-02-24 1962-02-26 Hermetically sealed refrigerating machine Expired - Lifetime US3154245A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED35482A DE1149024B (de) 1961-02-24 1961-02-24 Hermetisch gekapselte Kleinkaeltemaschine

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US3154245A true US3154245A (en) 1964-10-27

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US (1) US3154245A (da)
DE (1) DE1149024B (da)
DK (1) DK123439B (da)
GB (1) GB990932A (da)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461683A (en) * 1968-01-30 1969-08-19 Danfoss As Pressure pipe for encapsulated refrigerating machine
FR2370245A1 (fr) * 1976-11-08 1978-06-02 Danfoss As Machine frigorifique sous carter perfectionnee
US4141223A (en) * 1976-11-08 1979-02-27 Danfoss A/S Encapsulated refrigerator
US4231228A (en) * 1979-08-03 1980-11-04 Carrier Corporation Combination process tube and vibration attenuator for a refrigeration circuit
US5443371A (en) * 1994-12-12 1995-08-22 Tecumseh Products Company Noise damper for hermetic compressors
US6537041B2 (en) * 2001-03-12 2003-03-25 Samsung Kwangju Electronics Co., Ltd. Tension generating means for reducing vibrations in a hermetic compressor discharge line tube
WO2014059503A1 (en) * 2012-10-18 2014-04-24 Whirlpool S.A. Hermetically sealed pipe for a compressor and hermetically sealed compressor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174536A (en) * 1934-08-30 1939-10-03 Gen Motors Corp Motor-compressor unit for refrigerating apparatus
US2178811A (en) * 1935-11-30 1939-11-07 Westinghouse Electric & Mfg Co Compression apparatus
US2200222A (en) * 1936-12-30 1940-05-07 Gen Motors Corp Refrigerating apparatus
US2274942A (en) * 1940-03-30 1942-03-03 Touborg Jens Lubricated refrigerant compressor
US2587246A (en) * 1949-11-28 1952-02-26 Tresco Inc Hermetic refrigeration compressor
US2823850A (en) * 1954-08-05 1958-02-18 Stempel Hermetik Gmbh Carrier for a motor compressor of a refrigerating machine
US2996240A (en) * 1954-12-17 1961-08-15 Licentia Gmbh Arrangement of oil pumps in compression type refrigerating machines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2338486A (en) * 1941-10-09 1944-01-04 Gen Electric Compressor unloader

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2174536A (en) * 1934-08-30 1939-10-03 Gen Motors Corp Motor-compressor unit for refrigerating apparatus
US2178811A (en) * 1935-11-30 1939-11-07 Westinghouse Electric & Mfg Co Compression apparatus
US2200222A (en) * 1936-12-30 1940-05-07 Gen Motors Corp Refrigerating apparatus
US2274942A (en) * 1940-03-30 1942-03-03 Touborg Jens Lubricated refrigerant compressor
US2587246A (en) * 1949-11-28 1952-02-26 Tresco Inc Hermetic refrigeration compressor
US2823850A (en) * 1954-08-05 1958-02-18 Stempel Hermetik Gmbh Carrier for a motor compressor of a refrigerating machine
US2996240A (en) * 1954-12-17 1961-08-15 Licentia Gmbh Arrangement of oil pumps in compression type refrigerating machines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461683A (en) * 1968-01-30 1969-08-19 Danfoss As Pressure pipe for encapsulated refrigerating machine
FR2370245A1 (fr) * 1976-11-08 1978-06-02 Danfoss As Machine frigorifique sous carter perfectionnee
US4141223A (en) * 1976-11-08 1979-02-27 Danfoss A/S Encapsulated refrigerator
US4142380A (en) * 1976-11-08 1979-03-06 Danfoss A/S Encapsulated refrigerator
US4231228A (en) * 1979-08-03 1980-11-04 Carrier Corporation Combination process tube and vibration attenuator for a refrigeration circuit
US5443371A (en) * 1994-12-12 1995-08-22 Tecumseh Products Company Noise damper for hermetic compressors
US6537041B2 (en) * 2001-03-12 2003-03-25 Samsung Kwangju Electronics Co., Ltd. Tension generating means for reducing vibrations in a hermetic compressor discharge line tube
WO2014059503A1 (en) * 2012-10-18 2014-04-24 Whirlpool S.A. Hermetically sealed pipe for a compressor and hermetically sealed compressor

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Publication number Publication date
DE1149024B (de) 1963-05-22
GB990932A (en) 1965-05-05
DK123439B (da) 1972-06-19

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