(19)
(11) EP 2 607 542 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.06.2015 Bulletin 2015/24

(43) Date of publication A2:
26.06.2013 Bulletin 2013/26

(21) Application number: 12197541.1

(22) Date of filing: 17.12.2012
(51) International Patent Classification (IPC): 
D06F 39/00(2006.01)
D06F 37/20(2006.01)
 D06F 33/02(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: 22.12.2011 US 201161578925 P
02.10.2012 US 201213633200

(71) Applicant: WHIRLPOOL CORPORATION
Benton Harbor Michigan 49022 (US)

(72) Inventors:
  • Ashrafzadeh, Farhad
    21025 Comerio (IT)
  • Erickson, Donald E.
    21025 Comerio (IT)
  • Janke, Brian P.
    21025 Comerio (IT)
  • Zasowski, Peter E.
    21025 Comerio (IT)

(74) Representative: Guerci, Alessandro et al
Whirlpool Europe S.r.l. Patent Department Viale G. Borghi 27
21025 Comerio (VA)
21025 Comerio (VA) (IT)

   


(54) Method for maximizing drum rotational speed by continuously monitoring inertia during extraction


(57) A laundry treating appliance (10) may have a rotatable drum (16) defining a treating chamber (18) for receiving a laundry load, a motor (88) rotatably driving the drum (16), and a controller (96) controlling the operation of the motor (88). The laundry treating appliance (10) may be operated by accelerating the drum (16) with the motor (88) toward a final speed greater than a satellizing speed, determining a mass value indicative of the mass of the rotating drum (16) and contents within the treating chamber (18) during the accelerating, determining a current rotational speed during the acceleration, calculating a force value indicative of a force acting on the drum based on the determined mass value and the current rotational speed, comparing the force value to a reference force value, and repeating the determining, calculating, and comparing during the acceleration, and ceasing the accelerating when the force value obtains a predetermined relationship with the reference force value.







Search report









Search report