EP0561383B1 - A refrigeration compressor - Google Patents

A refrigeration compressor Download PDF

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Publication number
EP0561383B1
EP0561383B1 EP93104357A EP93104357A EP0561383B1 EP 0561383 B1 EP0561383 B1 EP 0561383B1 EP 93104357 A EP93104357 A EP 93104357A EP 93104357 A EP93104357 A EP 93104357A EP 0561383 B1 EP0561383 B1 EP 0561383B1
Authority
EP
European Patent Office
Prior art keywords
compressor
chamber
silencer
gas
pipe
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.)
Expired - Lifetime
Application number
EP93104357A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0561383A1 (en
Inventor
Maurizio Bucciarelli
Lanfranco Pol
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.)
ACC Compressors SpA
Original Assignee
Zanussi Elettromeccanica 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 Zanussi Elettromeccanica SpA filed Critical Zanussi Elettromeccanica SpA
Publication of EP0561383A1 publication Critical patent/EP0561383A1/en
Application granted granted Critical
Publication of EP0561383B1 publication Critical patent/EP0561383B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0066—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using sidebranch resonators, e.g. Helmholtz resonators

Definitions

  • the present invention relates to a special form of inlet pipe for cooling gas inside an airtight enclosure containing an electric compressor, particularly employed in refrigerators for household use.
  • the body of the compressor has an inlet pipe inside the casing connected to the inlet valve via various channels and cavities that permit the drawn-in gas to be conveyed inside the cylinder.
  • the gas Being in contact with all the hot surfaces of the compressor, the gas heats up and reduces its density during these passages.
  • thermodynamic efficiency in this way would accordingly increase the level of acoustic power emitted, particularly during intake, that is transmitted directly outside the casing of the compressor, thereby compromising the requirements of quietness.
  • the acoustic control system is preferably made of plastic material.
  • An expansion silencer is realized between two pipes (having different sections) and by a Helmholtz resonator whose collar is positioned along the pipe at the outlet of the silencer on the side of the inlet valve.
  • the spread of the acoustic waves is subject to interference and reflection phenomena that attenuate their acoustic intensity (understood to be the energy flow per unit of area).
  • thermodynamic cycle there is no flow of gas through the resonator cavity. Since there is thus no variation in the gas temperature due to the interposed cavity, the efficiency characteristics of the thermodynamic cycle are maintained unchanged.
  • the gas entering the compressor and coming from the inlet pipe is not dispersed in the casing to be then drawn into the inlet pipe present in the compressor body, but is immediately "intercepted" and directed toward the head without being allowed to spread.
  • a silencer is designed and mounted for guiding the path of the gas and connecting on one side the area facing the gas entry port in the casing, and on the other side the inlet port in the cylinder head.
  • intake silencer 4 made of plastic material, with gas entry port 6 and gas outlet pipe 8 from chamber 5, followed by port 7 toward the gas inlet valve in the head.
  • the cooling gas in pipe 6 enters chamber 5 inside silencer 4.
  • the silencer is interposed between the cavity inside the compressor casing and the gas inlet pipe within cylinder head 3, and is substantially L-shaped, whereby the greater side, widened at the center and virtually box-shaped, contains expansion chamber 5 and gas admission pipe 6 into the chamber, and the restriction of the lesser side constitutes gas outlet pipe 8 from chamber 5.
  • Expansion chamber 5 can have different forms, but preferably has two substantially parallel plane opposing walls and two curved opposing walls with the same direction and with substantially the same angle of curvature.
  • Chamber 5 can also have different forms provided that the following proportions are maintained between some critical dimensions.
  • the ratio between the area of admission pipe 6 and the transverse section of chamber 5 must be approximately 0.03.
  • the length of cavity 5 must be approximately 34 mm.
  • the silencer is preferably made of plastic material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP93104357A 1992-03-18 1993-03-17 A refrigeration compressor Expired - Lifetime EP0561383B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN920010 1992-02-11
IT92PN000010U IT229032Y1 (it) 1992-03-18 1992-03-18 Compressori frigoriferi perfezionati

Publications (2)

Publication Number Publication Date
EP0561383A1 EP0561383A1 (en) 1993-09-22
EP0561383B1 true EP0561383B1 (en) 1996-07-17

Family

ID=11394624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104357A Expired - Lifetime EP0561383B1 (en) 1992-03-18 1993-03-17 A refrigeration compressor

Country Status (5)

Country Link
EP (1) EP0561383B1 (es)
AT (1) ATE140518T1 (es)
DE (1) DE69303644T2 (es)
ES (1) ES2090743T3 (es)
IT (1) IT229032Y1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027402A2 (en) * 1995-09-29 1997-07-31 Matsushita Refrigeration Company Electrically-operated sealed compressor
US6012908A (en) * 1996-01-23 2000-01-11 Matsushita Refrigeration Company Electrically operated seal compressor having a refrigerant flow branch tube with a chamber disposed in the vicinity of a suction port
CN101871444B (zh) * 2010-07-30 2012-07-18 思科普压缩机(天津)有限公司 消音器
CN104612941A (zh) * 2015-02-14 2015-05-13 浙江鸿友压缩机制造有限公司 一种基于多层级管式衰减单元的压缩机进气消声器
WO2017030986A1 (en) 2015-08-14 2017-02-23 Sabic Global Technologies B.V. Cylinder head for compressor
CN110285496B (zh) * 2019-07-29 2023-11-03 珠海格力节能环保制冷技术研究中心有限公司 消音器、制冷系统及空调器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR8602173A (pt) * 1986-05-02 1987-12-22 Brasil Compressores Sa Aperfeicoamento em sistema de succao de compressor hermetico de refrigeracao
BR8804016A (pt) * 1988-07-29 1990-03-20 Brasil Compressores Sa Aperfeicoamento em sistema de succao para compressor hermetico de refrigeracao
BR9102288A (pt) * 1991-05-28 1993-01-05 Brasileira S A Embraco Empresa Conjunto abafador de succao para compressor hermetico

Also Published As

Publication number Publication date
DE69303644D1 (de) 1996-08-22
ITPN920010V0 (it) 1992-03-18
DE69303644T2 (de) 1996-11-21
ITPN920010U1 (it) 1993-09-18
ES2090743T3 (es) 1996-10-16
EP0561383A1 (en) 1993-09-22
ATE140518T1 (de) 1996-08-15
IT229032Y1 (it) 1998-06-24

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