(19)
(11) EP 1 283 360 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.07.2004 Bulletin 2004/30

(43) Date of publication A2:
12.02.2003 Bulletin 2003/07

(21) Application number: 02017854.7

(22) Date of filing: 08.08.2002
(51) International Patent Classification (IPC)7F04B 27/10
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 10.08.2001 JP 2001244759

(71) Applicant: Kabushiki Kaisha Toyota Jidoshokki
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Yokomachi, Naoya, K. Kaisha Toyota Jidoshokki
    Kariya-shi, Aichi-ken (JP)
  • Koide, Tatsuya, K. Kaisha Toyota Jidoshokki
    Kariya-shi, Aichi-ken (JP)
  • Imai, Takayuki, K. Kaisha Toyota Jidoshokki
    Kariya-shi, Aichi-ken (JP)
  • Murase, Masakazu, K. Kaisha Toyota Jidoshokki
    Kariya-shi, Aichi-ken (JP)

(74) Representative: Leson, Thomas Johannes Alois, Dipl.-Ing. 
Tiedtke-Bühling-Kinne & Partner GbR, TBK-Patent, Bavariaring 4
80336 München
80336 München (DE)

   


(54) Structure of channel in variable displacement piston type compressor


(57) A variable displacement piston type compressor has a housing, a drive shaft, a cam plate and a piston. The drive shaft is rotatably supported by the housing. The drive shaft has a first end and a second end. The first end of the drive shaft extends through the housing. The cylinder block is placed between the first end and the second end. The suction chamber and the discharge chamber are defined near the first end relative to the cylinder block. The crank chamber is defined near the second end relative to the cylinder block. The refrigerant in the crank chamber is bled into the suction pressure region through a bleed passage. Thereby, the inclination angle of the cam plate is controlled. The crank chamber and the suction chamber are connected with each other through the bleed passage. The bleed passage is formed outside of the drive shaft.







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