EP0902184A2 - Procédé de production d'un amortisseur de son pour une ouverture d'admission de fluide partculièrement adapté pour des circuits de compression des installations de réfrigération - Google Patents

Procédé de production d'un amortisseur de son pour une ouverture d'admission de fluide partculièrement adapté pour des circuits de compression des installations de réfrigération Download PDF

Info

Publication number
EP0902184A2
EP0902184A2 EP98115986A EP98115986A EP0902184A2 EP 0902184 A2 EP0902184 A2 EP 0902184A2 EP 98115986 A EP98115986 A EP 98115986A EP 98115986 A EP98115986 A EP 98115986A EP 0902184 A2 EP0902184 A2 EP 0902184A2
Authority
EP
European Patent Office
Prior art keywords
base
cover
intake muffler
retention joint
intake
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.)
Granted
Application number
EP98115986A
Other languages
German (de)
English (en)
Other versions
EP0902184A3 (fr
EP0902184B1 (fr
Inventor
Lanfranco Cavicchioli
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.)
Clam SpA
Original Assignee
Clam SpA
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 Clam SpA filed Critical Clam SpA
Publication of EP0902184A2 publication Critical patent/EP0902184A2/fr
Publication of EP0902184A3 publication Critical patent/EP0902184A3/fr
Application granted granted Critical
Publication of EP0902184B1 publication Critical patent/EP0902184B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the present invention relates to a method for manufacturing an intake muffler, particularly for compression circuits for refrigeration systems and the like.
  • an air intake device which acts as silencer and as cooling system, is used for each compressor in compression circuits.
  • This device better known as intake muffler, consists of two parts: a base, in which a labyrinth-like path is molded, and a cover; said parts are assembled in order to obtain a hermetic casing.
  • the muffler since the intake is transmitted to capillary ducts, the muffler must be provided so that in addition to ensuring perfect tightness it has no flash which, as a consequence of its separation, might start circulating and obstruct said capillary passages.
  • Intake mufflers are currently manufactured in two parts which are joined by ultrasonic welding. Although this type of welding occurs in controlled conditions as regards the profile of the two parts to be coupled, the shape of the sonotrode and the frequency and intensity of the welding action, nonetheless some of the welded parts have flash along their inside and outside perimeters.
  • Another conventional solution for mutually assembling the cover and the base of the muffler provides for the mutual interlocking of the two parts by means of teeth formed in the plastic; in this manner the muffler is not pressure-tight.
  • Another conventional solution provides for the insertion, between the base and the cover, of a third element made of rubber-like material which, when compressed, provides at least some sort of pressure-tightness.
  • the aim of the present invention is to provide a method for manufacturing an intake muffler for compression circuits for refrigeration systems and the like which combines optimum tightness with substantially complete absence of flash.
  • an object of the present invention is to provide a method for manufacturing an intake muffler for compression circuits for refrigeration systems and the like in which internal flash is fully eliminated.
  • Another object of the present invention is to provide a method for manufacturing an intake muffler for compression circuits for refrigeration systems and the like in which the construction method according to the invention is provided by modifying molds that are currently used.
  • Another object of the present invention is to provide a method for manufacturing an intake muffler for compression circuits for refrigeration systems and the like which is highly reliable, relatively easy to manufacture and at low costs.
  • an intake muffler for compression circuits comprising a base provided with air passage channels and with a cover which is meant to be coupled to said base, characterized in that it comprises a retention joint which is molded around the perimetric seam between said base and said cover.
  • the method for manufacturing the intake muffler according to the present invention comprises a first step which consists in molding the base 1 and the cover 2 of the muffler in separate molds, thus obtaining the finished parts meant to be assembled in order to constitute the intake muffler, generally designated by the reference numeral 100 in Figure 3.
  • the step for the assembly of the muffler is performed in a suitable assembly mold, in which a perimetric profile is formed, being adapted to provide a retention joint 3 which is molded perimetrically at the coupling edge of the base 1 and of the cover 2.
  • the retention joint 3 thus closes the perimeter of the base and of the cover of the muffler; in order to provide a hermetic coupling on the upper surface of the cover 2, at the edge, and on the lower surface of the base, at the rim, perimetric grooves 4 are provided in which complementarily shaped raised portions 5 engage.
  • the raised portions are formed on the retention joint 3 as a consequence of molding in the mold for the assembly of the muffler 100.
  • the retention joint therefore has, in a transverse sectional view, a substantially C-shaped profile as shown in Figure 3.
  • the coupling between the base 1 and the cover 2 occurs by means of the interlocking of a frustum-shaped protrusion 6 of the cover 2 in a cavity 7 formed in the base 1.
  • the frustum-like shape of the cavity 7 and of the protrusion 6 allows to obtain an interlock between the base 1 and the cover 2 which combines with the action of the retention joint 3, engaging between the rim of the cover 2 and the rim of the base 1, as described above.
  • the molding of the retention joint 3 around the seam for coupling the base and the cover eliminates the possibility of forming internal flash and any external flash that might form at the closure regions of the mold can be easily eliminated.
  • the compactness of the muffler can be increased by using additional systems for mutually anchoring the retention joint 3 and the base 1 of the muffler.
  • undercuts 8 formed as grooves provided in the outer rim of the base 1 of the muffler.
  • the method according to the invention fully achieves the intended aim, since it allows to perform the hermetic assembly of an intake muffler while avoiding the forming of internal and external perimetric flash, which can be damaging, if it breaks off, by obstructing capillary passages in which the cooling air aspirated by the compressor through said muffler must pass.
  • the base 1 and the cover 2 of the muffler can be provided, at one or more outer rim regions, with an undercut which is more definite than the undercuts 4 (perimetric grooves) shown in Figure 3, to anchor the retention jont 3.
  • the outer rim profile is suitably interrupted at one or more regions, to define at least one indentation 10. Accordingly, the retention joint 3 is molded perimetrically and the indentation 10 fills with molded material when the base and the cover are assembled, in order to strenghten the coupling.
  • the materials employed may be any according to requirements and to the state of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Exhaust Silencers (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
EP19980115986 1997-09-11 1998-08-25 Procédé de production d'un amortisseur de son pour une ouverture d'admission de fluide partculièrement adapté pour des circuits de compression des installations de réfrigération Expired - Lifetime EP0902184B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI972073 1997-09-11
ITMI972073 IT1295020B1 (it) 1997-09-11 1997-09-11 Procedimento di realizzazione di muffola di aspirazione, particolarmente per circuiti di compressione per impianti frigoriferi

Publications (3)

Publication Number Publication Date
EP0902184A2 true EP0902184A2 (fr) 1999-03-17
EP0902184A3 EP0902184A3 (fr) 2000-03-22
EP0902184B1 EP0902184B1 (fr) 2005-04-20

Family

ID=11377859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980115986 Expired - Lifetime EP0902184B1 (fr) 1997-09-11 1998-08-25 Procédé de production d'un amortisseur de son pour une ouverture d'admission de fluide partculièrement adapté pour des circuits de compression des installations de réfrigération

Country Status (4)

Country Link
EP (1) EP0902184B1 (fr)
DE (1) DE69829810T2 (fr)
ES (1) ES2242252T3 (fr)
IT (1) IT1295020B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073656A1 (fr) * 1999-05-27 2000-12-07 Matsushita Refrigeration Company Silencieux d'aspiration pour compresseur hermetique
EP1316943A3 (fr) * 2001-11-28 2003-12-17 Omron Corporation Filtre acoustique
EP1088993A4 (fr) * 1999-04-15 2004-08-04 Matsushita Refrigeration Silencieux d'aspiration et compresseur electrique ferme
WO2004085848A1 (fr) * 2003-03-28 2004-10-07 Empresa Brasileira De Compressores S.A. - Embraco Silencieux d'aspiration pour compresseur hermetique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1005684A (fr) * 1947-09-05 1952-04-15 Roulements A Aiguilles Sa Procédé d'assemblage d'éléments métalliques et assemblages résultant de l'application de ce procédé
JPS5943917A (ja) * 1982-09-02 1984-03-12 Sanyo Electric Co Ltd 圧縮機の吸込マフラ製造方法
DE3312231A1 (de) * 1983-04-05 1984-10-11 Bayer Ag, 5090 Leverkusen Hohlkoerper aus kunststoffen
BR8804016A (pt) * 1988-07-29 1990-03-20 Brasil Compressores Sa Aperfeicoamento em sistema de succao para compressor hermetico de refrigeracao
FR2690376B1 (fr) * 1992-04-22 1995-08-11 Aplast Consortium Procede pour fabriquer un corps creux en matiere plastique par assemblage de deux demi-coquilles, et corps creux ainsi obtenu, notamment collecteur d'amission d'air de moteur a explosion.
US5341654A (en) * 1993-04-16 1994-08-30 Copeland Corporation Suction gas conduit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1088993A4 (fr) * 1999-04-15 2004-08-04 Matsushita Refrigeration Silencieux d'aspiration et compresseur electrique ferme
WO2000073656A1 (fr) * 1999-05-27 2000-12-07 Matsushita Refrigeration Company Silencieux d'aspiration pour compresseur hermetique
AU754210B2 (en) * 1999-05-27 2002-11-07 Matsushita Refrigeration Company Suction muffler for a hermetic compressor
US6688856B1 (en) 1999-05-27 2004-02-10 Matsushita Refrigeration Company Suction muffler for a hermetic compressor
EP1316943A3 (fr) * 2001-11-28 2003-12-17 Omron Corporation Filtre acoustique
WO2004085848A1 (fr) * 2003-03-28 2004-10-07 Empresa Brasileira De Compressores S.A. - Embraco Silencieux d'aspiration pour compresseur hermetique
CN100414101C (zh) * 2003-03-28 2008-08-27 巴西船用压缩机有限公司 用来关闭封闭式压缩机的吸入消声器的系统
US7500540B2 (en) 2003-03-28 2009-03-10 Empresa Brasileira De Compressores S.A. Embraco Suction muffler for a hermetic compressor
KR101039365B1 (ko) * 2003-03-28 2011-06-08 월풀 에쎄.아. 밀폐형 압축기의 흡입 머플러

Also Published As

Publication number Publication date
IT1295020B1 (it) 1999-04-27
EP0902184A3 (fr) 2000-03-22
ES2242252T3 (es) 2005-11-01
DE69829810T2 (de) 2006-03-02
ITMI972073A1 (it) 1999-03-11
DE69829810D1 (de) 2005-05-25
EP0902184B1 (fr) 2005-04-20

Similar Documents

Publication Publication Date Title
US8833771B2 (en) Gasket assembly with improved locating and retention pin and method of construction thereof
CA1279579C (fr) Dispositif pour amortir un bruit d'aspiration
JPH06191280A (ja) 開閉可能な車輛ルーフのカバーおよびそのカバーの製造方法
EP0902184B1 (fr) Procédé de production d'un amortisseur de son pour une ouverture d'admission de fluide partculièrement adapté pour des circuits de compression des installations de réfrigération
US6394226B1 (en) Method for manufacturing an intake muffler particularly for compression circuit for refrigeration systems and the like
EP1415101B1 (fr) Dispositif comprenant un joint d'etancheite place entre deux elements constitutifs
JP2004502480A (ja) 接合されるテープに溶着された歯を備える封止用スライドファスナ
GB2271955A (en) Joining the ends of a weatherstrip by moulding
CA2182712A1 (fr) Joint en elastomere, particulierement pour portes de four de cuisson
JPH0345212B2 (fr)
US20070262537A1 (en) Method for the Production of a Flat Seal, and Flat Seal
JP2001280207A (ja) 仕切板付きタンク
US20080296218A1 (en) Oil Canning of Mesh Screen for Filter
CA2626478C (fr) Silencieux acoustique pour compresseur hermetique
KR100349703B1 (ko) 차량용 등기구 및 그 제조 방법
CN220135314U (zh) 一种灯具及灯具的壳体
KR200156186Y1 (ko) 밀폐형 압축기의 머플러
JPH10141508A (ja) バックアップリング付きオイルシール
JP2003025418A (ja) ブロー成形用型内インサート
JP3255851B2 (ja) 密閉型電動圧縮機
JPH0694165A (ja) ウォールカバー
KR100517173B1 (ko) 타이어 가류금형의 블레이드 구조_
JPH0986175A (ja) ウエザーストリップの接続構造
JPH05288117A (ja) ガスケット
JP4484000B2 (ja) リップシールの製造方法

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

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 04B 39/00 A, 7B 29C 67/00 B

17P Request for examination filed

Effective date: 20000825

AKX Designation fees paid

Free format text: DE ES FR GB IT

17Q First examination report despatched

Effective date: 20040107

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69829810

Country of ref document: DE

Date of ref document: 20050525

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050825

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2242252

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060123

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050825

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20080228

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080228

Year of fee payment: 10

Ref country code: DE

Payment date: 20080228

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050420

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080825

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090303

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080826

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080826