Patent ID: 7055334

Claim:
A method for controlling an air-conditioning unit comprising: drawing air in from an inlet; exchanging heat between air drawn in from said inlet and a refrigerant using a heat exchanger; discharging air that has been heat-exchanged using said heat exchanger from a diffuser using an airflow device; and activating an allergen deactivation enzyme supported by an enzyme carrier in an internal space of the air-conditioning unit by creating an atmosphere in the internal space that is operable to activate the enzyme, retaining air flow within the internal space using an internal air retaining device; wherein the internal air retaining device is an open/close device operable to close part of or all of openings communicating with the internal space to keep the internal space in a semi-enclosed or fully enclosed condition; and wherein said retaining comprises having the internal space enclosed in the semi-enclosed or fully enclosed condition during said activating and operating said airflow device to agitate the air of the atmosphere in the internal space that is operable to activate the enzyme.