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1. (WO2007009202) A PISTON-AND-CYLINDER ASSEMBLY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/009202 International Application No.: PCT/BR2006/000146
Publication Date: 25.01.2007 International Filing Date: 21.07.2006
Chapter 2 Demand Filed: 16.05.2007
IPC:
F04B 39/12 (2006.01) ,F04B 53/00 (2006.01) ,F04B 53/16 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
39
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/-F04B37/225
12
Casings; Cylinders; Cylinder heads; Fluid connections
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
16
Casings; Cylinders; Cylinder liners or heads; Fluid connections
Applicants:
WHIRLPOOL S.A. [BR/BR]; Av. das Naçöes Unidas, 12.995, 32°andar Brooklin Novo-04578-000 São Paulo, SP, BR (AllExceptUS)
GRAF, Egerhardt [BR/BR]; BR (UsOnly)
LINK, Rodrigo [BR/BR]; BR (UsOnly)
KLEIN, Fabio Henrique [BR/BR]; BR (UsOnly)
SCHRAMM, Cristiano, Rafael [BR/BR]; BR (UsOnly)
Inventors:
GRAF, Egerhardt; BR
LINK, Rodrigo; BR
KLEIN, Fabio Henrique; BR
SCHRAMM, Cristiano, Rafael; BR
Agent:
DANNEMANN, Siemsen ; Caixa Postal 2142 Rua Marqués de Olinda, 70 22251-040-Rio de Janeiro-RJ, BR
Priority Data:
PI0503019-622.07.2005BR
Title (EN) A PISTON-AND-CYLINDER ASSEMBLY
(FR) ENSEMBLE PISTON-CYLINDRE
Abstract:
(EN) A piston-and-cylinder assembly, used in cooling sys terns that may include, for example, refrigerators, air-conditioning systems and the like. In order to solve the problems of volumetric loss (or of cooling capacity) of compressors in general, according to the present invention, one foresees configuring the cylinder (11) of the compression chamber in such a manner that the friction will be as low as possible in the phase in which the gas being compresses still does not exert a significant force onto the piston (10) top and will only have a significant effect during the phase in which the gas to be compressed exerts a greater force onto the piston (10) , a moment when the volumetric loss impairs the efficiency of the compressor.
(FR) La présente invention concerne un ensemble piston-cylindre utilisé dans des sytèmes de refroidissement, parmi lesquels on peut citer comme exemples les réfrigirateurs, les systèmes de climatisation et similaires. Afin de résoudre le problème posé par la perte volumétrique (ou de capacité de refroidissement) des compresseurs en général, conformément à la présente invention, il est prévu de configurer le cylindre (11) de la chambre de compression de manière à ce que la friction soit aussi faible que possible dans la phase durant laquelle le gaz étant comprimé n’exerce pas encore une force suffisante sur la face supérieure du piston (10) et n’ait d’effet signifcatif qu’au cours de la phase durant laquelle le gaz à comprimer exerce une force supérieure sur le piston (10), moment auquel l’efficacité du compresseur est réduite à cause de la perte volumétrique.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
MXMX/a/2008/000810KR1020080027892EP1907703JP2009503368US20100186585CN101228354
JP2013139884