VACUUM CLEANING APPLIANCE WITH A BATTERY PACK

摘要

A vacuum cleaning appliance (100) comprises a dirt and dust separating apparatus (152) and a fan (200) and fan motor (220) for generating an airflow from a dirty air inlet (124), through the dirt and dust separating apparatus (152) to a cleaned air outlet (40a, b, c). The appliance (100) is powered by a battery pack (10) which is located downstream of the fan along the airflow path through the appliance (100). The battery pack (10) has a housing (12) containing a plurality of cells (18), an inlet port (38) for receiving a stream of cooling fluid from the airflow path and at least one outlet port (40) for emitting the stream of cooling fluid, and a cooling fluid path between the inlet port or ports (38) and the outlet port or ports (40) for carrying cooling fluid therebetween. The cooling during discharging of the cells (18) allows the cells (18) to operate at or near their optimum temperature in order to maximise efficiency and energy consumption. It also provides a silencing function.