(19)
(11) EP 2 096 308 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.05.2010 Bulletin 2010/19

(43) Date of publication A2:
02.09.2009 Bulletin 2009/36

(21) Application number: 09153858.7

(22) Date of filing: 27.02.2009
(51) International Patent Classification (IPC): 
F04B 27/18(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 TR
Designated Extension States:
AL BA RS

(30) Priority: 28.02.2008 JP 2008047022

(71) Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Yamamoto, Kenji
    Kariya-shi Aichi 448-8671 (JP)
  • Hayashi, Shiro
    Kariya-shi Aichi 448-8671 (JP)
  • Mizutani, Hideki
    Kariya-shi Aichi 448-8671 (JP)
  • Kayukawa, Hiroaki
    Kariya-shi Aichi 448-8671 (JP)

(74) Representative: TBK-Patent 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Swash plate type variable displacement compressor


(57) A swash plate type variable displacement compressor includes a crank chamber (16), a rotary shaft (17), a swash plate (23), a piston (29), a supply passage (42) and first and second bleed passages (48,58). The supply passage connecting the crank chamber to a discharge pressure region (39) is provided with a displacement control valve (35). The pressure in the crank chamber is varied by adjusting the opening of the displacement control valve. The first bleed passage (48) connecting the crank chamber to the suction pressure region is provided with a valve (50). The second bleed passage (58) constantly connecting the crank chamber to the suction pressure region (38) is provided with a throttle (59). The valve (50) operates to close the first bleed passage according to the magnitude of centrifugal force generated by the rotation of the rotary shaft.







Search report