Abstract: The light-weight design of moving parts was one of the important methods of ensuring the reliability of the air-deflector-part of heat pump air conditioner. As the largest moving part of the heat pump air conditioner indoor unit, the large guide air deflector was generally processed with composite design: metal (outer)/plastic (inner). The appearance was beautiful, but weight was heavy, and the production process was complicated. In order to reduce the weight and improvement of productive efficiency, a plastic component was used for a new design. Researched with Creo, the new structural design and maximum driving torque calculations of the heat pump air conditioning all-plastic air deflector were studied. And the assembling efficiency of the all-plastic air deflector was compared with the outer metal/inner plastic composite air deflector. The results showed that, at comparable total mass, the maximum driving torque of the all-plastic air deflector reduced by 11.1%, the assembling efficiency was improved by more than 50%.

Key words: Heat pump air conditioner, Air deflector, Driving torque, Assembling efficiency