(19)
(11) EP 1 293 735 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.05.2003 Bulletin 2003/22

(43) Date of publication A2:
19.03.2003 Bulletin 2003/12

(21) Application number: 02020405.3

(22) Date of filing: 10.09.2002
(51) International Patent Classification (IPC)7: F25B 13/00, F25B 9/00
(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: 12.09.2001 JP 2001276040

(71) Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
Tokyo 100-8310 (JP)

(72) Inventors:
  • Sugiyama, Kunio
    Chiyoda-ku, Tokyo 100-8310 (JP)
  • Yamada, Yoichi
    Chiyoda-ku, Tokyo 100-8310 (JP)
  • Zuiki, Shigeo
    Chiyoda-ku, Tokyo 100-8310 (JP)
  • Nagasaki, Yoshiki
    Chiyoda-ku, Tokyo 100-8310 (JP)
  • Sumida, Yoshihiro
    Chiyoda-ku, Tokyo 100-8310 (JP)

(74) Representative: Bohnenberger, Johannes, Dr. et al
Meissner, Bolte & Partner Postfach 86 06 24
81633 München
81633 München (DE)

   


(54) Refrigerant circuit


(57) In a refrigerant circuit, an expansion valve 4 is connected to a heat exchanger 5 by a refrigerant pipe, and a bypass pipe 7/9 is provided. By way of a bypass pipe 9 having a check valve 10, a refrigerant is returned to a refrigerant circuit from a refrigerant amount control tank 8 that is installed in the bypass pipe 7/9.






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