(19)
(11) EP 1 909 049 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.10.2009 Bulletin 2009/42

(43) Date of publication A2:
09.04.2008 Bulletin 2008/15

(21) Application number: 07253821.8

(22) Date of filing: 26.09.2007
(51) International Patent Classification (IPC): 
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 MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(30) Priority: 06.10.2006 US 539306

(71) Applicant: Hussmann Corporation
Bridgeton Missouri 63044-4283 (US)

(72) Inventors:
  • Street, Norman E.
    O'Fallon, MO 63366 (US)
  • Baker, George A., Jr.
    Wheaton, Il 60187 (US)
  • Zerbe, Phil K.
    Lombard, IL 60148 (US)

(74) Representative: Holmes, Matthew Peter et al
Marks & Clerk LLP Sussex House
83-85 Mosley Street Manchester M2 3LG
83-85 Mosley Street Manchester M2 3LG (GB)

   


(54) Electronic head pressure control


(57) A condenser assembly (10) for use in a refrigeration system to reject heat from refrigerant to an environment. The condenser assembly includes first and second condenser modules (25) each having a condenser coil (35) and valve (50). Each condenser coil (35) includes an inlet port (60,65) to receive a refrigerant and an outlet port (70) to discharge the refrigerant. The valve (50) is in fluid communication with the corresponding inlet port (60,65) and regulates flow of the refrigerant through the corresponding condenser coil. A sensor (120) in communication with the refrigeration circuit generates a signal indicative of an inlet pressure of the condenser assembly. A controller (125) is programmed to actuate the first valve (50) to regulate the flow of the refrigerant into first condenser coil, and to actuate the second valve (50) independent of the first valve to regulate the flow of the refrigerant into the second condenser coil to control condenser volume based on the signal indicative of the inlet pressure.







Search report