简单来讲Ozone就是阻抗来自宇宙太阳有害辐射的大气层，主要成飞由臭氧构成，因此又称之为臭氧层。冷媒中含有的氟，会造成严重的臭氧层损坏，因此所有从事空调维修的工作人员必须经过EPA的考试。
Ozone is a form of oxygen. In the earth’s stratosphere, it helps to block potentially harmful ultraviolet radiation from reaching the ground. However, at lower levels in the atmosphere (the air we breathe) it’s a product of pollution and can be dangerous. In-home air purifiers that make ozone should be avoided. Other ozone sources include items with electric motors such as vacuum cleaners and refrigerators.
