EP 3019655 B1 20190626 - HEAT PUMP LAUNDRY DRYING APPLIANCE WITH ENHANCED OPERATION FLEXIBILITY
Title (en)
HEAT PUMP LAUNDRY DRYING APPLIANCE WITH ENHANCED OPERATION FLEXIBILITY
Title (de)
WÄRMEPUMPENTROCKNER MIT VERBESSERTER, FELXIBLERER BETRIEBSWEISE
Title (fr)
SÈCHE-LINGE À POMPE DE CHALEUR EN MODE D' OPÉRATION PLUS FLÉXIBLE ET PLUS EFFICACE
Publication
Application
Priority
EP 2013064499 W 20130709
Abstract (en)
[origin: WO2015003742A1] An appliance for drying laundry (100) comprising an appliance cabinet (110), a laundry treatment chamber (105) inside the cabinet, a drying air recirculation path for causing recirculation of the drying air into/out from the laundry treatment chamber, a drying air propeller (225) driven by a drying air propeller motor (240; 340f) for causing the drying air to recirculate along the drying air recirculation path, a drying air moisture condensing and heating system (205-220,270) located in the drying air recirculation path for dehydrating the moisture-laden drying air leaving the laundry treatment chamber and heating the dehydrated drying air before it re-enters into the laundry treatment chamber, wherein the drying air moisture condensing and heating system comprises a heat pump operating with a refrigerant fluid, the heat pump comprising a refrigerant fluid compressor (205) and a refrigerant fluid expansion device (220). The refrigerant fluid compressor is a variable-output compressor, capable of being driven to work at different compressor working modes, each compressor working mode corresponding to a respective compressor power consumption course and/or compressor rotational speed course and/or frequency course of the supply current/voltage of the compressor. The refrigerant fluid expansion device is a variable expansion device, controllable to provide different refrigerant fluid mass-flow rates. The appliance has a user interface (121) comprising a laundry drying cycle selector (205) operable by a user for selecting one out of a number of default laundry drying cycles (C1, C2, C3,…, Ck), and a control unit (245) adapted to control the machine operation, comprising commanding the compressor to work at a default output corresponding to the selected default laundry drying cycle, controlling the expansion device to provide a default refrigerant fluid mass-flow rate corresponding to the selected default laundry drying cycle, and commanding the drying air propeller motor to work at a default average speed corresponding to the selected default laundry drying cycle. The user interface comprises a command input means (255) operable by the user for imparting to the appliance a command in response to which the control unit: commands the compressor to work at a changed compressor output course with respect to the default output; controls the expansion device to provide a correspondingly changed refrigerant fluid mass-flow rate with respect to the default refrigerant fluid mass-flow rate corresponding to the selected default laundry drying cycle, and commands the drying propeller motor to work at a changed average speed with respect to the default average speed corresponding to the selected drying cycle.
IPC 8 full level
D06F 58/20 (2006.01)
CPC (source: EP US)
D06F 58/206 (2013.01 - EP US)
Citation (examination)
EP 2733253 A1 20140521 - ELECTROLUX HOME PROD CORP [BE]
Designated contracting state (EPC)
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
DOCDB simple family (publication)
WO 2015003742 A1 20150115; EP 3019655 A1 20160518; EP 3019655 B1 20190626
DOCDB simple family (application)
EP 2013064499 W 20130709; EP 13745362 A 20130709