Abstract: Large flow reverse osmosis (RO) water purifier, in order to better meet the smaller installation space under the kitchen cabinet, the flat filter bottle instead of the cylindrical filter bottle, so that the shape of the water purifier becomes slim. In the process of product development, it is difficult to verify its reliability. Usually, the method is to make the product into a mold sample and then verify it, which requires more money and time. However, the FEA technology can overcome the shortcomings of the above traditional product development. When designing flat filter bottles, we use FEA simulation analysis to find the weak points of the product and optimize them through the total deformation and the stress intensity. In this way, the flat filter bottle can be reliably applied to the water purifier product.

Key words: Flat filter bottle, FEA simulation, Total deformation, Stress intensity