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 PDFInfo
- 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
Links
- 239000010687 lubricating oil Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000001804 emulsifying effect Effects 0.000 claims description 2
- 239000006260 foam Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Images
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)
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)
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)
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)
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 |
-
1980
- 1980-06-03 FR FR8012281A patent/FR2483534A1/fr not_active Withdrawn
-
1981
- 1981-05-19 EP EP81400788A patent/EP0041428A1/fr not_active Ceased
- 1981-06-02 ES ES1981267308U patent/ES267308Y/es not_active Expired
Patent Citations (3)
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)
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 |