(19)
(11) EP 1 793 182 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.05.2011 Bulletin 2011/20

(43) Date of publication A2:
06.06.2007 Bulletin 2007/23

(21) Application number: 06024851.5

(22) Date of filing: 30.11.2006
(51) International Patent Classification (IPC): 
F25B 9/06(2006.01)
F25B 9/00(2006.01)
F25B 49/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 30.11.2005 JP 2005345487

(71) Applicant: Panasonic Corporation
Kadoma-shi Osaka 571-8501 (JP)

(72) Inventors:
  • Okaza, Noriho Matsushita Electric Industrial Co., Ltd.
    1-chome,Chuo-ku Osaka-shi,Osaka 540-6319 (JP)
  • Nakatani, Kazuo Matsushita Electric Industrial Co., Ltd.
    1-chome,Chuo-ku Osaka-shi,Osaka 540-6319 (JP)

(74) Representative: Eisenführ, Speiser & Partner 
Postfach 31 02 60
80102 München
80102 München (DE)

   


(54) Control method of refrigeration cycle apparatus


(57) It is an object of the present invention to stably operate the refrigeration cycle apparatus having an expansion mechanism capable of recovering pressure energy at the time of expansion, and to enhance the stability at the time of actuation. A control method of the refrigeration cycle apparatus including a compressing mechanism 2, a heat source-side heat exchanger 6, the expansion mechanism 5 which recovers power, and a utilizing-side heat exchanger 3. The number of revolutions of the expansion mechanism 5 is controlled such that the number of revolutions becomes equal to a target number of revolutions of the expansion mechanism 5 determined from a discharging temperature of the compressing mechanism 2. The number of revolutions of the expansion mechanism 5 can appropriately be controlled, the refrigeration cycle apparatus can be operated stably, and the stability of the refrigeration cycle apparatus at the time of actuation can be enhanced.







Search report