The refrigerator has become one of the indispensable important household appliancesin people’s daily life. The compressor, which works as the heart of refrigerator, has a directimpact on the refrigerator lifespan, energy consumption and environmental performance.However, refrigerating compressor belongs to high-tech product, while companies in ourcountry have been busy expanding production to deal with the fierce market competition,pay less attention on the digestion, absorption of the introduction technology. We mustacknowledge that we are still in a simple production situation and have not yet formed ourown technology. In recent years, some companies have realized the importance ofimproving product quality, and spent a certain amount of men, resources on structuraloptimization and technology development of products.Just under the above context, this thesis is begun. The main purpose of this thesis isto reduce maintenance costs and improve the lifespan of the refrigerating compressor. Theresearch achievement has a very important practical significance for increasing the marketshare of the product. This thesis mainly consists in the following aspects:First, based on structural mechanics and fluid dynamics, Use calculation softwareprogram MATLAB to simulate laws of motion and mathematical models of reed valves.Then compared to the theoretical model, to confirm the reliability of the motion model weget. The results provide a basis for us to analyzing of the flow pattern of compressor.Second, using FLUENT dynamic mesh method to analyze the flow properties of theintake process and exhaust process under different flow time while the valves in differentopen angle. Then analyze the flow noise in the process and the directivity of noisetransmission.Third, using computer simulation design software platform ANSYS WORKBENCH,the stress distribution during working process of the valve plate are been simulated,byfluid-structure interaction. And the valves’ resonant vibration modes are been analyzed,providing a theoretical basis for the design, selection and structure optimization of the reedvalves.Finally, by changing the shape of reed valves, the changes of stress and deformationof valves are analyzed comparatively, and structural optimization is applied to both of them. The results could provide theoretical reference to extend the lifespan of thecompressor valves and reduce the cost of compressor. |