Patent ID: 9528217
Filing Date: 2016-12-27
CPC Classification: D06F

Claim Text:
1. A drainage and filtering system for a washing machine, comprising: an outer barrel; and a filtering apparatus, wherein a groove is defined at the bottom of the outer barrel, the bottom of the groove is provided with a drainage port, the filtering apparatus is mounted in the groove and covers an upper part of the drainage port, the filtering apparatus is provided with at least one filtering passage leading to the drainage port, and a foreign material stop structure is arranged in the at least one filtering passage, wherein the filtering apparatus comprises an upper cover board matched with a shape of an opening of the groove and multiple baffles arranged on a lower surface of the upper cover board, and the multiple baffles are matched to form a sidewall of the at least one filtering passage and the foreign material stop structure in the at least one filtering passage; wherein the multiple baffles comprise a sidewall baffle for forming the sidewall of the at least one filtering passage and filtering baffles arranged in the at least one filtering passage, wherein a bent waterway in the at least one filtering passage is formed between one of the filtering baffles and the sidewall baffle, or between two adjacent filtering baffles of the filtering baffles, the bent waterway is matched with the filtering baffles to form the foreign material stop structure; wherein a height of each of the filtering baffles is less than or equal to a height of the sidewall baffle, the filtering apparatus is supported in the groove by the sidewall baffle; and wherein an annular rib is provided at a lower surface of the upper cover board corresponding to the drainage port, a height of the annular rib is less than that of each of the filtering baffles, multiple flow-guiding blades are distributed radially from a center inside the annular rib, and an end of each of the multiple flow-guiding blades has an arc-shaped transition corresponding to the annular rib.