Electric vacuum cleaner

Abstract

An electric vacuum cleaner includes a first dust separation device configured to separate sucked dust, a first dust collection section for collecting the separated dust, a second dust separation device configured to separate the dust, a dust removing device configured to remove the dust adhering to the second dust separation device, a second dust collection section for accumulating the removed dust, a partition wall for zoning the first dust collection section and the second dust collection section and an introduction opening for introducing the removed dust into the second dust collection section; the partition wall includes a communication opening for communicating the first dust collection section to the second dust collection section and an opening and closing member for closing either of the introduction opening or the communication opening and switching the closing to the other by rotating, and the opening and closing member closes the introduction opening with a negative pressure by an electric fan and closes the communication opening by its own weight when the electric fan is not driven.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing an external appearance of an electric vacuum cleaner according to the present invention.

FIG. 2 is a perspective view showing a body of the electric vacuum cleaner.

FIG. 3 is a vertical cross-sectional view showing the structure of the electric vacuum cleaner body.

FIG. 4 is a perspective view illustrating a dust collection container.

FIG. 5 is a perspective view illustrating the dust collection container shown in FIG. 4 seen from another direction.

FIG. 6 is an explanatory view showing a structure of a round air path section of the dust collection container.

FIG. 7 is an explanatory view illustrating a fine dust collection section.

FIG. 8 is a cross-sectional view showing the electric vacuum cleaner body with an introduction opening closed by an opening and closing plate.

FIG. 9 is an explanatory view showing a fine dust collection section with the introduction opening closed by the opening and closing plate.

Claims

1. An electric vacuum cleaner, comprising: a first dust separation device configured to separate dust sucked by a negative pressure of an electric fan;a first dust collection section for collecting the dust separated by the first dust separation device;a second dust separation device configured to separate the dust which has passed through the first dust separation device;a dust removing device configured to remove the dust adhering to the second dust separation device;a second dust collection section positioned in an upstream side of the second dust separation device and provided in a lower portion of the second dust separation device, for accumulating the dust removed by the dust removing device;a partition wall for zoning the first dust collection section and the second dust collection section; andan introduction opening for introducing the dust removed by the dust removing device into the second dust collection section, whereinthe partition wall is provided with a communication opening for communicating the first dust collection section to the second dust collection section,the partition wall is provided with an opening and closing member for closing either of the introduction opening or the communication opening and switching the closing to the other by rotating, andthe opening and closing member closes the introduction opening with the negative pressure by driving of the electric fan and closes the communication opening by its own weight when the electric fan is not driven.

2. The electric vacuum cleaner according to claim 1, wherein the communication opening is formed in an upper portion of the second dust collection section.

3. The electric vacuum cleaner according to claim 1, wherein a bottom portion of the first dust collection section and a bottom portion of the second dust collection section are simultaneously opened, so as to simultaneously discharge the dust accumulated in the first dust collection section and the second dust collection section.

4. The electric vacuum cleaner according to claim 1, wherein the dust removing device removes the dust adhering to the second dust separation device, when operation of the electric fan is stopped.

5. The electric vacuum cleaner according to claim 1, wherein the second dust separation device comprises a pleated filter body.

6. The electric vacuum cleaner according to claim 1, wherein the dust removing device removes the dust adhering to the pleated filter body by vibrating the pleated filter body.