Global Patent Index - EP 2021631 A1

EP 2021631 A1 2009-02-11 - METHOD FOR REGULATING THE COOLANT MASS FLOW RATE OF A COMPRESSOR

Title (en)

METHOD FOR REGULATING THE COOLANT MASS FLOW RATE OF A COMPRESSOR

Title (de)

VERFAHREN ZUM REGELN DES KÄLTEMITTEL-MASSENSTROMS EINES VERDICHTERS

Title (fr)

PROCÉDÉ DE RÉGULATION DU DÉBIT MASSIQUE DE FLUIDE FRIGORIGÈNE D'UN COMPRESSEUR

Publication

EP 2021631 A1 (DE)

Application

EP 07725250 A

Priority

  • EP 2007004334 W
  • DE 102006024533 A
  • DE 102006029874 A
  • DE 102006029875 A

Abstract (en)

[origin: WO2007134760A1] Disclosed is a method for regulating the coolant mass flow rate of a compressor, especially an axial piston compressor, particularly for motor vehicle air conditioners, comprising a drive shaft (2) and a swash plate (1) whose inclination relative to the drive shaft is adjustable and which is disposed in a gear unit compartment of the compressor, said gear unit compartment being essentially defined by a compressor housing. The swash plate (1) defines the piston stroke of the compressor by means of the angle of deflection thereof relative to the drive shaft (2). An approximate equilibrium between a moment M<SUB>SW</SUB> generated by rotationally moved masses and a moment M<SUB>k,ges</SUB> generated by translationally moved masses (M<SUB>SW</SUB> = M<SUB>k,ges</SUB>) is created for at least one angle of deflection of the swash plate (1), and/or moment M<SUB>sw</SUB> is made to exceed moment M<SUB>k,ges</SUB> (M<SUB>SW</SUB> = M<SUB>k,ges</SUB>) in at least one range of the possible angles of deflection of the swash plate. The product of the compressor speed n, the suction gas density p, and the piston stroke s is automatically kept approximately constant for different compressor speeds n, at least in some ranges, especially for compressor speeds n ranging from 600 to 9000 rpm, particularly from 2500 to 7000 rpm, while a pressure p<SUB>c</SUB> prevailing in the gear unit compartment is also kept approximately constant. Also disclosed is a compressor suitable for carrying out the inventive method.

IPC 8 full level (invention and additional information)

F04B 27/18 (2006.01)

CPC (invention and additional information)

F04B 27/1804 (2013.01); F04B 27/1054 (2013.01); F25B 49/022 (2013.01); F04B 2201/1201 (2013.01); F04B 2205/01 (2013.01); F04B 2205/05 (2013.01); F04B 2205/09 (2013.01); F25B 2309/06 (2013.01); F25B 2400/076 (2013.01)

Citation (search report)

See references of WO 2007134760A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

WO 2007134760 A1 20071129; AT 467761 T 20100515; DE 502007003747 D1 20100624; EP 2021631 A1 20090211; EP 2021631 B1 20100512

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