US20080271943A1 - Acoustic Muffler for a Hermetic Compressor - Google Patents
Acoustic Muffler for a Hermetic Compressor Download PDFInfo
- Publication number
- US20080271943A1 US20080271943A1 US12/090,383 US9038306A US2008271943A1 US 20080271943 A1 US20080271943 A1 US 20080271943A1 US 9038306 A US9038306 A US 9038306A US 2008271943 A1 US2008271943 A1 US 2008271943A1
- Authority
- US
- United States
- Prior art keywords
- rib
- recess
- hollow base
- cover
- peripheral
- 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
Links
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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/162—Flanged joints characterised by the sealing means the pipe ends abutting each other
Definitions
- the present invention refers to an acoustic muffler, such as a suction muffler used in the hermetic compressor of refrigeration machines, for example, refrigeration appliances, freezers, drinking fountains, refrigerated counters, etc.
- Hermetic compressors of refrigeration systems usually have their suction provided with an acoustic dampening system (acoustic filter or suction muffler) disposed in the interior of the shell and which conducts the gas from the suction line to the suction valve.
- acoustic dampening system acoustic filter or suction muffler
- the acoustic muffler usually consists of two parts: a hollow base, internally provided with labyrinth-shaped chambers for the passage of gas, and a cover that hermetically closes the hollow base.
- the peripheral flange of the hollow base 1 carries a frusto-conical cavity 1 a and the peripheral flange of the cover 2 carries a projection 2 a , whose shape complements the shape of the cavity 1 a , in order to provide the hermetic coupling of the hollow base 1 to the cover 2 .
- a sealing belt 3 is injected externally to the joining region of the peripheral flanges of the hollow base 1 and cover 2 , generally surrounding an external peripheral edge of said pair of peripheral flanges to be mutually seated.
- peripheral flange 11 , 21 of each part of hollow base 10 and cover 20 presents a respective planar seating surface 13 , 23 , said mutually seated peripheral flanges 11 , 21 receiving a sealing belt 30 injected externally to the joining region of said parts, generally surrounding an external peripheral edge of the pair of peripheral flanges 11 , 21 .
- an acoustic muffler for a hermetic compressor which allows a hermetic mounting to be provided between its component parts of hollow base and cover, with a better locking therebetween, as well as the formation of a more efficient sealing barrier to avoid fluid communication between the interior and exterior of the acoustic muffler.
- a more specific object of the present invention is to provide an acoustic muffler such as cited above, which defines a more efficient sealing barrier against the occurrence of “flash” in the cases in which said acoustic muffler receives, by over-injection, a sealing belt on the joining region of the peripheral flanges of both the hollow base and the cover.
- Another object of the present invention is to provide an acoustic muffler such as cited above, which is easy to manufacture and to mount and has low cost.
- an acoustic muffler for a hermetic compressor comprising: a hollow base; a cover to be coupled to the hollow base, said parts of hollow base and cover including respective peripheral flanges to be mutually seated according to a seating plane; and a retention means, attaching the hollow base to the cover at the junction of said peripheral flanges, each peripheral flange presenting a respective seating surface provided with at least one recess and one rib which are radially adjacent and shaped to respectively complement a rib and a recess of the seating surface of the other peripheral flange, each rib and recess being continuous and provided to define a locking between the parts of hollow base and cover against relative spacing apart movements in said seating plane, as well as to define continuous sealing radial labyrinths between the interior and the exterior of the acoustic muffler at the junction of said peripheral flanges.
- FIG. 1 schematically represents a partial longitudinal sectional view of the joining region of the hollow base and the cover of an acoustic muffler built according to the prior art
- FIG. 2 schematically represents a partial longitudinal sectional view of the joining region of the hollow base and the cover of an acoustic muffler built according to another prior art solution
- FIG. 3 schematically represents a longitudinal sectional view of the peripheral flanges of the parts of hollow base and cover of an acoustic muffler built according to the present invention, said peripheral flanges being spaced from each other;
- FIG. 4 schematically represents a longitudinal sectional view of the parts of hollow base and cover illustrated in FIG. 3 , with the respective peripheral flanges being mutually seated and externally receiving a sealing belt;
- FIG. 5 represents an enlarged view of the seating region of the mutually seated peripheral flanges illustrated in FIG. 4 , indicating the direction in which the forces act to promote the mutual seating of the peripheral flanges.
- acoustic muffler of the type used in a hermetic compressor of a refrigeration system
- said acoustic muffler being of the type that comprises a hollow base 10 , generally obtained in a material of low thermal conductivity and which is closed by a cover 20 seated onto its upper edge and attached thereto by a retention means 30 , to be described ahead, at the junction of said peripheral flanges 11 , 21 .
- the retention means 30 comprises a peripheral sealing belt, with a C-shaped profile and which is over-injected around the mutual seating region of the peripheral flanges 11 , 21 , pressing the latter.
- Each part of hollow base 10 and cover 20 includes a respective peripheral flange 11 , 21 , radially projecting from the respective part and built so that said peripheral flanges 11 , 21 are mutually seated according to a seating plane, upon the closure of the acoustic muffler.
- the hollow base 10 is provided with a gas inlet (not illustrated) in fluid communication with the gas supply to the compressor, and a gas outlet (not illustrated) in fluid communication with a suction side of the compressor.
- the hollow base 10 defines, therewithin, at least one acoustic chamber (not illustrated) in communication with the gas inlet and the gas outlet in relation to the interior of said hollow base 10 .
- each part of hollow base 10 and cover 20 has its respective peripheral flange 11 , 21 projecting from a free edge portion 12 , 22 of said part, each said peripheral flange 11 , 21 defining a respective seating surface 13 , 23 , these being mutually confronting and contained in the seating plane, when said peripheral flanges 11 , 21 are found mutually seated, closing the acoustic muffler.
- the hollow base 10 and the cover 20 define, in the mutual seating condition of their peripheral flanges 11 , 21 , a labyrinth portion obtained, for example, with the provision of ribs 14 , 24 and recesses 15 , 25 , to be mutually fitted by interference.
- each peripheral flange 11 , 21 is provided in a circumferential region of the respective seating surface 13 , 23 spaced from a radially innermost edge of the respective peripheral flange 11 , 21 .
- each peripheral flange 11 , 21 presents the respective seating surface 13 , 23 provided with at least one rib 14 , 24 and one recess 15 , 25 , radially adjacent and which are shaped to respectively complement one recess 15 , 25 and one rib 14 , 24 of the seating surface 13 , 23 of the other peripheral flange 11 , 21 .
- Each rib 14 , 24 and each recess 15 , 25 presents a respective height corresponding to about 15% to 65% the width of the respective peripheral flange 11 , 21 , said parts of rib 14 , 24 and recess 15 , 25 being continuous and provided to define a locking between the parts of hollow base 10 and cover 20 against relative spacing apart movements in said seating plane, as well as to define continuous sealing radial labyrinths between the interior and the exterior of the acoustic muffler, at the junction of said peripheral flanges 11 , 21 .
- each rib 14 , 24 and each recess 15 present a height between about 18% and 25% of the width of the respective peripheral flange 11 , 21 .
- each peripheral flange 11 , 21 presents a determined quantity of ribs 14 , 24 and recesses 15 , 25 with a triangular profile and defined complementary to each other, in an alternate sequential arrangement in the radial direction of the respective peripheral flange 11 , 21 .
- each rib 14 , 24 is consecutively provided with a recess 15 , 25 in the respective seating surface 13 , 23 , for example having each recess 15 , 25 , defined consecutively and immediately adjacent to a rib 14 , 24 and the seating surface of the peripheral flange 21 of the cover 20 having a rib 24 provided in a radially outermost way.
- each peripheral flange 11 , 21 can be provided with ribs 14 , 24 and recesses 15 , in a radial arrangement different from the one illustrated, as long as the continuous profile of the respective seating surface creates upon the mutual seating of the peripheral flanges 11 , 21 a radial barrier between the interior and the exterior of the acoustic muffler.
- each seating surface 13 , 23 presents a rib followed by a recess, both presenting the same triangular profile defined so that the coplanar and adjacent side walls of a rib 14 , 24 and of a consecutive recess 15 , 25 in the same peripheral flange 11 , 21 lie in the same plane inclined in relation to the seating plane.
- the angle of said inclined plane is defined for allowing, upon the mutual seating of the peripheral flanges 11 , 21 , an adhesion to occur between the seating surfaces, said adhesion being sufficient to, under the influence of the room temperature (when the material of the muffler, generally plastic, tends to accommodate and adjust itself), avoid the occurrence of relative movement between the parts of hollow base 10 and cover 20 , breaking this adhesion and causing leakage.
- This adhesion effect (indicated by arrows in FIG. 4 ) is not obtained with the known prior art muffler constructions in which the mutual seating defines only an alignment between the parts to be mutually seated.
- the acoustic muffler described herein presents advantages over the known prior art suction mufflers, as it provides a hermetic junction of the parts of hollow base and cover, resulting in a muffler of high reliability and high resistance to impacts, thermal variations and fatigue.
- the present solution further provides a low cost production with high capability.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0504921-0 | 2005-11-04 | ||
BRPI0504921-0A BRPI0504921B1 (pt) | 2005-11-04 | 2005-11-04 | Hermetic compressor acoustic floor pump |
PCT/BR2006/000242 WO2007051272A1 (en) | 2005-11-04 | 2006-11-01 | Acoustic muffler for a hermetic compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080271943A1 true US20080271943A1 (en) | 2008-11-06 |
Family
ID=37684885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/090,383 Abandoned US20080271943A1 (en) | 2005-11-04 | 2006-11-01 | Acoustic Muffler for a Hermetic Compressor |
Country Status (12)
Country | Link |
---|---|
US (1) | US20080271943A1 (zh) |
EP (1) | EP1952023B1 (zh) |
JP (1) | JP5119158B2 (zh) |
KR (1) | KR101310856B1 (zh) |
CN (1) | CN101300424B (zh) |
AT (1) | ATE426742T1 (zh) |
BR (1) | BRPI0504921B1 (zh) |
CA (1) | CA2626478C (zh) |
DE (1) | DE602006005956D1 (zh) |
DK (1) | DK1952023T3 (zh) |
ES (1) | ES2322670T3 (zh) |
WO (1) | WO2007051272A1 (zh) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1715854A (en) * | 1923-03-06 | 1929-06-04 | Standard Dev Co | Fluid-tight joint |
US1906826A (en) * | 1930-07-12 | 1933-05-02 | United Superior Union Company | Pipe coupling |
US1935673A (en) * | 1931-03-17 | 1933-11-21 | Harry B Smith | Pipe joint |
US5341654A (en) * | 1993-04-16 | 1994-08-30 | Copeland Corporation | Suction gas conduit |
US6076832A (en) * | 1995-06-16 | 2000-06-20 | Management Consultancy Services (Scotland) Ltd. | Split seal |
US6234545B1 (en) * | 1992-09-01 | 2001-05-22 | Swagelok Company | Clamped flange fitting and assembly |
US6361290B1 (en) * | 1999-04-15 | 2002-03-26 | Matsushita Refrigeration Company | Suction muffler and hermetic compressor |
US6394226B1 (en) * | 2000-03-13 | 2002-05-28 | Clam S.P.A. | Method for manufacturing an intake muffler particularly for compression circuit for refrigeration systems and the like |
US20030098199A1 (en) * | 2001-11-28 | 2003-05-29 | Omron Corporation | Acoustic filter |
US20060118358A1 (en) * | 2003-03-28 | 2006-06-08 | Empresa Brasileira De Compressores S.A. Embraco | Suction muffler for a hermetic compressor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0230990A (ja) * | 1988-07-19 | 1990-02-01 | Sanyo Electric Co Ltd | 圧縮機の吸込マフラ |
IT241575Y1 (it) * | 1996-11-19 | 2001-05-09 | Zanussi Elettromecc | Compressore frigorifero con testa e silenziatore perfezionati |
-
2005
- 2005-11-04 BR BRPI0504921-0A patent/BRPI0504921B1/pt not_active IP Right Cessation
-
2006
- 2006-11-01 AT AT06804600T patent/ATE426742T1/de active
- 2006-11-01 WO PCT/BR2006/000242 patent/WO2007051272A1/en active Application Filing
- 2006-11-01 CA CA2626478A patent/CA2626478C/en not_active Expired - Fee Related
- 2006-11-01 ES ES06804600T patent/ES2322670T3/es active Active
- 2006-11-01 CN CN2006800410122A patent/CN101300424B/zh active Active
- 2006-11-01 EP EP06804600A patent/EP1952023B1/en not_active Not-in-force
- 2006-11-01 US US12/090,383 patent/US20080271943A1/en not_active Abandoned
- 2006-11-01 DE DE602006005956T patent/DE602006005956D1/de active Active
- 2006-11-01 JP JP2008538230A patent/JP5119158B2/ja not_active Expired - Fee Related
- 2006-11-01 DK DK06804600T patent/DK1952023T3/da active
- 2006-11-01 KR KR1020087010379A patent/KR101310856B1/ko not_active IP Right Cessation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1715854A (en) * | 1923-03-06 | 1929-06-04 | Standard Dev Co | Fluid-tight joint |
US1906826A (en) * | 1930-07-12 | 1933-05-02 | United Superior Union Company | Pipe coupling |
US1935673A (en) * | 1931-03-17 | 1933-11-21 | Harry B Smith | Pipe joint |
US6234545B1 (en) * | 1992-09-01 | 2001-05-22 | Swagelok Company | Clamped flange fitting and assembly |
US5341654A (en) * | 1993-04-16 | 1994-08-30 | Copeland Corporation | Suction gas conduit |
US6076832A (en) * | 1995-06-16 | 2000-06-20 | Management Consultancy Services (Scotland) Ltd. | Split seal |
US6361290B1 (en) * | 1999-04-15 | 2002-03-26 | Matsushita Refrigeration Company | Suction muffler and hermetic compressor |
US6394226B1 (en) * | 2000-03-13 | 2002-05-28 | Clam S.P.A. | Method for manufacturing an intake muffler particularly for compression circuit for refrigeration systems and the like |
US20030098199A1 (en) * | 2001-11-28 | 2003-05-29 | Omron Corporation | Acoustic filter |
US20060118358A1 (en) * | 2003-03-28 | 2006-06-08 | Empresa Brasileira De Compressores S.A. Embraco | Suction muffler for a hermetic compressor |
Also Published As
Publication number | Publication date |
---|---|
BRPI0504921B1 (pt) | 2017-06-27 |
DE602006005956D1 (de) | 2009-05-07 |
DK1952023T3 (da) | 2009-06-29 |
JP2009515077A (ja) | 2009-04-09 |
EP1952023B1 (en) | 2009-03-25 |
CA2626478C (en) | 2014-10-28 |
JP5119158B2 (ja) | 2013-01-16 |
CA2626478A1 (en) | 2007-05-10 |
CN101300424A (zh) | 2008-11-05 |
ATE426742T1 (de) | 2009-04-15 |
KR20080063802A (ko) | 2008-07-07 |
CN101300424B (zh) | 2010-12-15 |
WO2007051272A1 (en) | 2007-05-10 |
ES2322670T3 (es) | 2009-06-24 |
KR101310856B1 (ko) | 2013-09-23 |
BRPI0504921A (pt) | 2007-07-31 |
EP1952023A1 (en) | 2008-08-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: WHIRLPOOL S.A., BRAZIL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PROVESSI, SALVIO;RAMSDORF, ROBERTO;REEL/FRAME:021206/0338 Effective date: 20080623 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: EMBRACO - INDUSTRIA DE COMPRESSORES E SOLUCOES EM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WHIRLPOOL S.A.;REEL/FRAME:048453/0336 Effective date: 20190218 Owner name: EMBRACO - INDUSTRIA DE COMPRESSORES E SOLUCOES EM REFRIGERACAO LTDA., BRAZIL Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WHIRLPOOL S.A.;REEL/FRAME:048453/0336 Effective date: 20190218 |