(19)
(11) EP 2 163 766 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.03.2015 Bulletin 2015/10

(43) Date of publication A2:
17.03.2010 Bulletin 2010/11

(21) Application number: 09168270.8

(22) Date of filing: 20.08.2009
(51) International Patent Classification (IPC): 
F04C 18/02(2006.01)
 F04C 27/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA RS

(30) Priority: 12.09.2008 JP 2008234160

(71) Applicant: Hitachi Appliances, Inc.
Minato-ku Tokyo (JP)

(72) Inventors:
  • Hasegawa, Shuji
    Shizuoka (JP)
  • Matsunaga, Mutsunori
    Shizuoka (JP)
  • Miyake, Masashi
    Shizuoka (JP)
  • Fukaya, Yoshihiro
    Shizuoka (JP)

(74) Representative: MERH-IP Matias Erny Reichl Hoffmann 
Paul-Heyse-Strasse 29
80336 München
80336 München (DE)

   


(54) Scroll compressor


(57) A scroll compressor includes: an orbiting scroll (200) and a fixed scroll (100) which mesh with each other so as to compress a refrigerant; a discharge pressure space (5) into which the refrigerant is discharged from the compression chamber (4); an orbiting scroll end plate surface (202) on which the orbiting scroll comes into sliding contact with the fixed scroll; a fixed scroll end plate surface (102) on which the fixed scroll comes into sliding contact with the orbiting scroll; a groove-shaped pressurizing pocket space (601) which is provided in the orbiting scroll end plate surface or the fixed scroll end plate surface so as to be located on the outer peripheral side of the compression chamber; a pressure adjusting valve (600) which is provided in a passageway connecting the discharge pressure space with the pressurizing pocket space; and a pressurizing passageway (606) which is provided between the pressure adjusting valve and the pressurizing pocket space, wherein the refrigerant flows from the discharge pressure space to the pressurizing pocket space in the case where the differential pressure between the discharge pressure space and the pressurizing passageway is equal to a predetermined value.







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