(19)
(11) EP 1 380 801 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.05.2005 Bulletin 2005/18

(43) Date of publication A2:
14.01.2004 Bulletin 2004/03

(21) Application number: 03015469.4

(22) Date of filing: 09.07.2003
(51) International Patent Classification (IPC)7: F25B 41/06, F16K 31/68
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 11.07.2002 JP 2002202013
12.05.2003 JP 2003133266

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

(72) Inventors:
  • Sendo, Isao, c/o TGK Co., Ltd.
    Hachioji-shi, Tokyo 193-0942 (JP)
  • Yuasa, Tomohiro, c/o TGK Co., Ltd.
    Hachioji-shi, Tokyo 193-0942 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)

   


(54) Expansion valve


(57) The stroke of a valve element 8 of an expansion valve is set such that refrigerant flows at a flow rate 1.0 to 1.4 times the flow rate corresponding to the set tonnage. This means a limit of the valve lift to fully open state during start-up and prevents an unnecessary and excessive refrigerant flow and reduces flow noise of refrigerant during start-up and allows to save driving force for the compressor.






Search report