(19)
(11) EP 1 978 251 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.12.2009 Bulletin 2009/53

(43) Date of publication A2:
08.10.2008 Bulletin 2008/41

(21) Application number: 08005766.4

(22) Date of filing: 27.03.2008
(51) International Patent Classification (IPC): 
F04B 27/10(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 MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 28.03.2007 JP 2007084792
29.03.2007 JP 2007088327

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

(72) Inventors:
  • Wang, Xiaoliang
    Kariya-shi, Aichi-ken (JP)
  • Hoshino, Nobuaki
    Kariya-shi, Aichi-ken (JP)
  • Ota, Masaki
    Kariya-shi, Aichi-ken (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Refrigerant suction structure in fixed displacement type piston compressor, and operation control method in fixed displacement type piston compressor


(57) An introduction passage (31) of rotary valve (35, 36) has outlets (312, 313) for feeding out refrigerant in a suction pressure zone (142) toward each of compression chambers (271, 281). A switch portion in a shutoff state shuts off a portion (142) of the suction pressure zone within a compressor (10) from the outlets (312, 313) of the introduction passage (31). The switch portion includes a valve body (42), a working pressure chamber (412), and a working pressure applying portion (48, 67-68). The working pressure chamber (412) introduces a working pressure that is applied to the valve body (42) so as to arrange the valve body (42) at a communication position. The pressure in the suction pressure zone (142) acts against the pressure in the working pressure chamber (412) through the valve body (42).







Search report