US20080271943A1 - Acoustic Muffler for a Hermetic Compressor - Google Patents

Acoustic Muffler for a Hermetic Compressor Download PDF

Info

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
Application number
US12/090,383
Other languages
English (en)
Inventor
Salvio Provessi
Roberto Ramsdorf
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.)
Nidec Global Appliance Compressores e Solucoes em Refrigeracao Ltda
Original Assignee
Whirlpool 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 Whirlpool SA filed Critical Whirlpool SA
Assigned to WHIRLPOOL S.A. reassignment WHIRLPOOL S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PROVESSI, SALVIO, RAMSDORF, ROBERTO
Publication of US20080271943A1 publication Critical patent/US20080271943A1/en
Assigned to EMBRACO - INDÚSTRIA DE COMPRESSORES E SOLUÇÕES EM REFRIGERAÇÃO LTDA. reassignment EMBRACO - INDÚSTRIA DE COMPRESSORES E SOLUÇÕES EM REFRIGERAÇÃO LTDA. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WHIRLPOOL S.A.
Abandoned legal-status Critical Current

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)
US12/090,383 2005-11-04 2006-11-01 Acoustic Muffler for a Hermetic Compressor Abandoned US20080271943A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BRPI0504921-0A BRPI0504921B1 (pt) 2005-11-04 2005-11-04 Hermetic compressor acoustic floor pump
BRPI0504921-0 2005-11-04
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 (da)
EP (1) EP1952023B1 (da)
JP (1) JP5119158B2 (da)
KR (1) KR101310856B1 (da)
CN (1) CN101300424B (da)
AT (1) ATE426742T1 (da)
BR (1) BRPI0504921B1 (da)
CA (1) CA2626478C (da)
DE (1) DE602006005956D1 (da)
DK (1) DK1952023T3 (da)
ES (1) ES2322670T3 (da)
WO (1) WO2007051272A1 (da)

Citations (10)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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
CA2626478A1 (en) 2007-05-10
CN101300424A (zh) 2008-11-05
JP2009515077A (ja) 2009-04-09
WO2007051272A1 (en) 2007-05-10
KR101310856B1 (ko) 2013-09-23
BRPI0504921A (pt) 2007-07-31
DE602006005956D1 (de) 2009-05-07
ES2322670T3 (es) 2009-06-24
CN101300424B (zh) 2010-12-15
JP5119158B2 (ja) 2013-01-16
BRPI0504921B1 (pt) 2017-06-27
CA2626478C (en) 2014-10-28
KR20080063802A (ko) 2008-07-07
DK1952023T3 (da) 2009-06-29
ATE426742T1 (de) 2009-04-15
EP1952023A1 (en) 2008-08-06
EP1952023B1 (en) 2009-03-25

Similar Documents

Publication Publication Date Title
US5304044A (en) Hermetic compressor
US20090072492A1 (en) Gasket
JP2001503833A (ja) 冷凍用コンプレッサのヘッド及び消音器における改良
US6293774B1 (en) Refrigerating agent compressor with improved valve
CN104819130B (zh) 压缩机
US20080159881A1 (en) Suction System for a Refrigeration Compressor
CA2626478C (en) Acoustic muffler for a hermetic compressor
US7500540B2 (en) Suction muffler for a hermetic compressor
US6425528B2 (en) Expansion valve
JPH0345212B2 (da)
JP2000282994A (ja) 燃料ポンプ
US6537044B2 (en) Scroll compressor sealing unit structure
US5980223A (en) Refrigerant compressor having an asymmetrically contoured piston
CN107110141B (zh) 用于压缩机的声学衰减装置
WO2015000524A1 (en) Sealing assembly for reciprocating hermetic compressor
CN217154646U (zh) 制冷器具
KR200156186Y1 (ko) 밀폐형 압축기의 머플러
US6401965B1 (en) Refrigerating agent compressor with improved pressure chamber
KR200369548Y1 (ko) 에어컨용 리시버드라이어 탱크의 구조
US8858197B2 (en) Compressor with sensor and valve plate arrangement
KR101966092B1 (ko) 차량용 드레인 유닛
JPH0481582A (ja) ロータリー圧縮機の吐出弁装置
KR200241445Y1 (ko) 호스 클램프
JPH04255593A (ja) 可変容量型圧縮機
MXPA00005701A (es) Compresor de refrigeracion con valvula mejorada

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