EP0041428A1 - Dispositif d'atténuation du bruit produit par un compresseur hermétique à piston - Google Patents

Dispositif d'atténuation du bruit produit par un compresseur hermétique à piston Download PDF

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Publication number
EP0041428A1
EP0041428A1 EP81400788A EP81400788A EP0041428A1 EP 0041428 A1 EP0041428 A1 EP 0041428A1 EP 81400788 A EP81400788 A EP 81400788A EP 81400788 A EP81400788 A EP 81400788A EP 0041428 A1 EP0041428 A1 EP 0041428A1
Authority
EP
European Patent Office
Prior art keywords
tongue
crankshaft
compressor
oil
axis
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.)
Ceased
Application number
EP81400788A
Other languages
German (de)
English (en)
French (fr)
Inventor
Joel Crespin
Jacques Martin
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.)
Lunite Hermetique SA
Original Assignee
Lunite Hermetique 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 Lunite Hermetique SA filed Critical Lunite Hermetique SA
Publication of EP0041428A1 publication Critical patent/EP0041428A1/fr
Ceased 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
    • F04B39/0077—Pulsation and noise damping means by generating oil foam

Definitions

  • the present invention relates to a device for attenuating the noise produced by a hermetic piston compressor.
  • compressors currently used in heating and refrigeration heat pumps are, for the most part, of the hermetic piston type.
  • Such compressors are simple in construction and have a long service life, but the noise caused in particular by the reciprocating movement of the piston is relatively high and can be annoying in some cases.
  • the present invention relates to a device making it possible to attenuate the noise produced by a hermetic compressor of this type.
  • a device for attenuating the noise of a hermetic piston compressor comprising a hermetic envelope containing oil, an electric motor provided with a stator and a rotor whose shaft is integral with a crankshaft causing, by means of a connecting rod, the displacement of the piston in a cylinder
  • this device which comprises means for emulsifying the oil, is characterized in that these means comprise a fixed tongue on the crankshaft between the connecting rod and a lower bearing of this crankshaft and is arranged so that its free end is immersed in the compressor lubricating oil.
  • the compressor shown in Figure 1 is a conventional compressor of the lower piston type.
  • This compressor is enclosed in a hermetic envelope 1, and essentially comprises an electric motor 2 consisting of a stator and a rotor.
  • the rotor shaft 3 is integral with a crankshaft 4 driving, by means of a connecting rod 5 a piston 6 moving in a cylinder 7.
  • the crankshaft 4 is extended by a shaft end 8 coaxial with the rotor shaft 3.
  • the shaft end 8 is supported by a lower bearing device 9.
  • the hermetic envelope 1 contains a certain quantity of lubricating oil 10, the upper level of which, at rest, is represented by a dashed line 11. This upper level arrives substantially at the height of the upper face of the bearing 9, slightly between below the piston 6.
  • the compressor being well known per se, will not be described in more detail.
  • the device 12 for noise reduction according to the invention is fixed, for example by force fitting.
  • the device 12 is produced, for example, by cutting and stamping a metal sheet having a thickness of approximately 1 mm.
  • the device 12 consists of a ring 13 having an internal diameter substantially equal to that of the end of the shaft 8, this ring 13 extending on one side by a wall 14 extending radially and then by a wall 15 s' extending axially.
  • the walls 14 and 15 form a cylindrical cup, the internal diameter of which is greater than that of the ring 13.
  • the wall 15 ends in a rim 16 extending radially.
  • the rim 16 has the shape of a circular crown and has an appendage 17 consisting of two parts: a first part 18 lying in the same plane as the rim 16, and a second part, called tongue 19, perpendicular to the first part and folded back towards the ring 13.
  • the tongue 19 extends in a radial plane passing through the axis of the shaft end 8 and has a rectangular shape. In the embodiment shown in the drawing, the rectangle formed by the tongue 19 has dimensions of approximately 12 x 6 mm.
  • the lower part 20 at least of the tongue 19 is immersed in the oil 10 when the compressor is at rest. It is understood that any other suitable device for fixing the tongue 19 to the shaft end 8 may be suitable.
  • the height, taken in the axial direction, of the part 20 of the tongue 19 is, in the example shown in the drawing, of approximately 6 mm, but could be approximately 4 mm without the acoustic result obtained being significantly reduced. .
  • the vertical axis of the tongue 19 is approximately 23 mm from the axis of the shaft end 8, but it could be placed at a distance between approximately 20 mm and 26 mm, taking into account the space available between the bearing 9 and the cylinder 7.
  • this spacing is not very critical and could have other values in the application to compressors of other types or other dimensions.
  • the tongue 19 emulsifies the oil 10 mixed with the fluid (for example Freon) compressed by the compressor, and the foam thus produced spreads at least throughout the lower part of envelope 1 and cover in in particular the piston 6 with its connecting rod 5.
  • the foam produced is maintained, and this foam attenuates the operating noise of the compressor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP81400788A 1980-06-03 1981-05-19 Dispositif d'atténuation du bruit produit par un compresseur hermétique à piston Ceased EP0041428A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8012281 1980-06-03
FR8012281A FR2483534A1 (fr) 1980-06-03 1980-06-03 Dispositif d'attenuation du bruit produit par un compresseur hermetique a piston, et compresseur comportant un tel dispositif

Publications (1)

Publication Number Publication Date
EP0041428A1 true EP0041428A1 (fr) 1981-12-09

Family

ID=9242641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400788A Ceased EP0041428A1 (fr) 1980-06-03 1981-05-19 Dispositif d'atténuation du bruit produit par un compresseur hermétique à piston

Country Status (3)

Country Link
EP (1) EP0041428A1 (es)
ES (1) ES267308Y (es)
FR (1) FR2483534A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597930A1 (fr) * 1986-04-28 1987-10-30 Carrier Corp Dispositif de lubrification a huile et de suppression de bruit, notamment pour compresseurs hermetiques

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990111A (en) * 1959-09-22 1961-06-27 American Motors Corp Refrigerating apparatus
GB1017369A (en) * 1963-11-12 1966-01-19 Westinghouse Electric Corp Improvements in lubrication of bearings
US3614384A (en) * 1970-02-16 1971-10-19 Westinghouse Electric Corp Motor compressor unit with reduced noise transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792755A (en) * 1973-03-26 1974-02-19 Tecumseh Products Co Method of suppressing noise in hermetic compressors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990111A (en) * 1959-09-22 1961-06-27 American Motors Corp Refrigerating apparatus
GB1017369A (en) * 1963-11-12 1966-01-19 Westinghouse Electric Corp Improvements in lubrication of bearings
US3614384A (en) * 1970-02-16 1971-10-19 Westinghouse Electric Corp Motor compressor unit with reduced noise transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597930A1 (fr) * 1986-04-28 1987-10-30 Carrier Corp Dispositif de lubrification a huile et de suppression de bruit, notamment pour compresseurs hermetiques

Also Published As

Publication number Publication date
ES267308U (es) 1983-03-16
FR2483534A1 (fr) 1981-12-04
ES267308Y (es) 1983-09-16

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT DE FR GB IT NL

17P Request for examination filed

Effective date: 19820311

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19830818

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARTIN, JACQUES

Inventor name: CRESPIN, JOEL