This is a bit vague. If you want to help you find something specific, you need to observe this latest machine. I suggest you search it on Soopat. Patentee: Midea Company (including: Midea Group, Foshan Midea, etc.) Summary: Water purification filter element
The companies include the following:
Then download these 48 patents and compare them one by one, and you can be found I want the patent. I can only help you so far, because it will take a lot of time to find the patent you want, you know.