Cyclone type dirt separator and electric vacuum cleaner

Abstract

A cyclone type dirt separator disposed at an intermediate point of an suction tube which connects the suction fitting and the cleaner main body of an electric vacuum cleaner, the dirt separator including: a dirt separating section which causes the suction air to undergo a spiral flow and conducts air from the vicinity of the center of this spiral flow to the cleaner main body, a dirt collection chamber which is attached to the dirt separating section from below and causes the dirt separated from the spiral flow to drop so that the dirt is collected inside the dirt collection chamber, and a recessed portion which is formed in the vicinity of the inside bottom center of the dirt collection chamber so as to be recessed downward.

Description

BACKGROUND OF THE INVENTION [0001] 1. Technical Field [0002] The present invention relates to a cyclone type dirt separator which is provided at an intermediate point of the suction tube of an electric vacuum cleaner and further relates to an electric vacuum cleaner that uses such a separator. [0003] 2. Description of the Related Art [0004] In typical electric vacuum cleaners, suction air that involves dirt that is sucked in via a suction fitting (suction nozzle) is led to the cleaner main body via a suction tube. Here, the suction air that contains dirt passes through a filter installed in the cleaner main body, and dirt is collected by this filter. [0005] In collection of the dirt, if relatively large pieces of dirt such as paper debris, sludge and the like are contained in large quantities in the dirt that is sucked in, the filter quickly becomes clogged, so that the suction capacity soon drops. Accordingly, the filter must be cleaned frequently, and this frequent filter cleaning...

AI Technical Summary

Benefits of technology

[0011] Accordingly, the first object of the present invention is to provide a cyclone type dirt separator which assuredly prevents the entrainment of dirt accumulated in the

Problems solved by technology

In collection of the dirt, if relatively large pieces of dirt such as paper debris, sludge and the like are contained in large quantities in the dirt that is sucked in, the filter quickly becomes clogged, so that the suction capacity soon drops.

Accordingly, the filter must be cleaned frequently, and this frequent filter cleaning is in fact a problem of poor efficiency.

This dirt causes clogging of the filter of the cleaner main body

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