Dust cup of cyclone centrifugal filtration type dust collector

Abstract

A dust cup of a cyclone centrifugal filtration type dust collector comprises a dust cup body and a top cover and a bottom cover of the dust cup body. An air inlet which is tangential to the peripheral wall of the cup body is arranged on a side wall on the upper portion of the cup body, an air outlet is arranged on the top cover, a big-end-up conical retainer ring is disposed on the inner wall of the cup body, a plurality of screen holes are arranged on the side walls of the retainer ring, an isolating sleeve is sleeved on the lower side of the retainer ring, the upper end of the isolating sleeve is directly or indirectly fixed with the retainer ring, the lower end of the isolating sleeve is hermetically abutted to the bottom cover, the inner wall of the isolating sleeve and the bottom cover form a coarse dust cavity, and the outer wall of the isolating sleeve, the inner wall of the cup body and the bottom cover form a fine dust cavity. The screen holes are arranged on the retainer ring, so that coarse dust and fine dust are stored separately, problems that the fine dust dropping to the bottom of the dust cup rotates to the center of the dust cup along airflow to fly up, and a small quantity of the fine dust is stopped by the retainer ring in midway to fly up directly can be avoided, the service life of a filter is prolonged, and the dust cup can keep the best dust collection efficiency for a long time.

Description

technical field [0001] The invention relates to an accessory for separating and storing dust in a vacuum cleaner, in particular to a dust cup for a vacuum cleaner which separates dust from the air by rotating and centrifuging and prevents the fine dust from rising. Background technique [0002] As early as May 18, 1988, the "cyclone centrifugal vacuum cleaner" with the patent number "ZL87201282" disclosed that a retaining ring was set on the inner wall of the dust cup of the vacuum cleaner to prevent the dust from entering the bottom of the dust cup during the dust collection process. The airflow rises and causes the filter to be clogged, which reduces the dust collection efficiency of the vacuum cleaner. Since then, the dust cups of many cyclone vacuum cleaners at home and abroad have also adopted this structural form, the only difference is the shape and width of the retaining ring. Setting a retaining ring at a suitable position on the inner wall of the dust cup of the c...

AI Technical Summary

Problems solved by technology

Although this structure can prevent the fine dust falling into the bottom of the dust cup from rotating to the center of the dust cup with the airflow, it cannot prevent a small amount of fine dust from rising with the airflow. Dust is removed, but fine dust can easily clog the filter, so that the dust cup cannot maintain the best dust collection effect for a long time

In addition, the bottom cover of this dust cup has a dead angle that is inconvenient to clean

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