(19)
(11) EP 2 784 320 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.07.2016 Bulletin 2016/30

(43) Date of publication A2:
01.10.2014 Bulletin 2014/40

(21) Application number: 14160650.9

(22) Date of filing: 19.03.2014
(51) International Patent Classification (IPC): 
F04B 27/18(2006.01)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 27.03.2013 JP 2013066787

(71) Applicant: TGK CO., Ltd.
Tokyo 193-0942 (JP)

(72) Inventors:
  • Tonegawa, Masaaki
    Tokyo, 193-0942 (JP)
  • Sakakibara, Hidekazu
    Tokyo, 193-0942 (JP)
  • Sugamura, Ryouta
    Tokyo, 193-0942 (JP)
  • Saeki, Shinji
    Tokyo, 193-0942 (JP)

(74) Representative: Schröer, Gernot H. 
Meissner Bolte Patentanwälte Rechtsanwälte Partnerschaft mbB Bankgasse 3
90402 Nürnberg
90402 Nürnberg (DE)

   


(54) Control valve for variable displacement compressor


(57) A control valve according to one embodiment includes a body having a main passage communicating a discharge chamber with a crankcase and a sub-passage communicating the crankcase with a suction chamber, a main valve provided in the main valve passage, a sub-valve provided in the sub-passage, a power element for receiving the suction pressure of the suction chamber and generating a drive force exerted in an opening direction of the main valve in accordance with the magnitude of the suction pressure, and a solenoid for generating a drive force in a closing direction of the main valve in accordance with the amount of current supplied. The control valve is configured such that the sub-valve remains closed when the main valve is controlled and such that the sub-valve is opened after the main valve is closed. Also, a change in the area of opening of the sub-valve relative to the uplift amount of the sub-valve element from the sub-valve seat is larger than that of the main valve relative to the uplift amount of the main valve element from the main valve seat.







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Search report