Tumble dryer comprising a heat pump and heating system and method for operating the same

摘要

A tumble dryer having a drying chamber for articles to be dried; a process-air duct; a heater arranged to heat process air, wherein the heater is a two-stage heater having a first heating stage in a first circuit and a second heating stage in a second circuit that is parallel to the first circuit; a first fan to direct heated process air over the articles to be dried in the drying chamber; a heat pump having a heat sink, a heat source and a heat transfer device; a controller; and a thermostatic switch arranged in the first circuit or the second circuit, wherein the thermostatic switch is thermally coupled to the heat pump.

主权项

1. A dryer, comprising:
a drying chamber for articles to be dried; a controller; a heat pump; a heat exchanger; a heater which heats process air from the heat pump, the heater having a first heating stage and a second heating stage; a first fan to direct heated process air to the drying chamber, a second fan to direct ambient air to the heat exchanger, and a third fan to direct air to the heat pump; a thermostatic switch connected on the heat pump and configured to switch off the second heating stage when a measured temperature at the heat pump one of reaches and exceeds a preset maximum value Tmax such that process air from the heat pump is heated by the first heating stage.