20150059582 | GREEN CASCADE-TYPE DEVICE FOR INTERCEPTING AND FILTERING OIL FUMES - A cascade-type device for intercepting and filtering oil fumes comprises an exhausting space formed between a housing and a filter and a cascading space formed between the filter and an external plate. A wind entrance communicated with the cascading space is formed between a lower portion of the external plate and the housing. The housing accommodates rinsing liquid whose height is higher than a bottom edge of the external plate. A negative pressure formed in the exhausting and the cascading space while drawing air allows the rinsing liquid blown by a wind pressure to hit the filter and generate water bloom for combining oil molecules of oil fumes. When the oil fumes further pass the filter, the oil molecules are adhered to the filter again and then scoured off by the water bloom, thereby attaining a dual-filtering effect and an automatic cleanliness of the filter and the housing. | 03-05-2015 |