"Tiny Cooling Fan" safe and environmentally friendly, based on the current international energy shortages, as well as the domestic electricity shortage occurred frequently in recent years, energy-saving features will be an unavoidable development. Positioned between the air conditioner and fan air conditioning "Tiny Cooling Fan" power is generally only about 60-80W, and both air supply, cooling, heating and air purification, humidification and other functions into one, it is water as a medium, the use of phase change material absorbs heat of vaporization of water law and the principle of work potential, can send cold air below room temperature, and the built-in conventional electric heat source can be sent warm and humid air. Thus, "Tiny Cooling Fan" can avoid trouble meter trip, there carefree feeling cool air-conditioning fan, it was widely favored by the majority of the working family.