JPH01212527A - Electric cleaner - Google Patents

Abstract

PURPOSE:To exterminate ticks reliably even if suction air flow drops by employing spirally protruding inner face in an operating pipe bend with an obtuse angle. CONSTITUTION:A suction path coupled with the filter in an electric cleaner body 1 comprises two extending pipes 2, 3, an operating pipe 4 bent with an obtuse angle and a hose 4'. A spiral pipe wall is formed at the bent section of the operating pipe 4 thus forming an inward spiral protrusion 5. Air containing dust and sucked through a floor nozzle 6 is bent when it passes through the operating pipe 4 and collides against the protrusion 5. Ticks existing in the air containing dust are exterminated by the collision impact and filtered together with the dust.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vacuum cleaner in which dust mites are removed in a suction passage leading to a filter.

BACKGROUND OF THE INVENTION It is well known that mites, such as Leopard mites, which can cause asthma, live on the 9 tatami mat floors, carpets, futons, etc. of homes. When cleaning with a vacuum cleaner, these mites are collected in the dust collecting section along with dust. Here, the dust mites are sucked in along with the dust.
Most of them die by colliding with filters or already collected dust. However, if the suction air volume decreases due to a large amount of dust collected in the dust collection section, the above-mentioned impact insecticidal effect becomes weaker, and the number of surviving mites increases.

Conventionally, the following two methods have been adopted as measures against surviving mites.

Specifically, one of them is a filter made of a paper bag or the like that is impregnated with insecticide, as shown in Japanese Patent Application Laid-Open No. 59-207124, and the other is a filter made of paper bags or the like that is impregnated with insecticide.
As disclosed in Japanese Patent No. 2-127026, the exhaust air from an electric blower is circulated, and the heat of the electric blower is used to heat a dust collecting section, thereby killing mites with the heat.

Problems to be Solved by the Invention However, with the former conventional means, a special filter treated with insecticide is required, and care must be taken when using it.
Moreover, strong insecticides cannot be used due to their effects on the human body.

The threads used were not satisfactory in terms of their ability to dispose of mites. In the latter case, the temperature of the circulation system including the filter membrane and the electric blower rises, so it is necessary to take thermal measures for these, and the product becomes expensive. Moreover, extra time is required to remove mites after cleaning, which is extremely troublesome.

The present invention solves these conventional problems, and aims to perform mite treatment rationally and safely.

Means for Solving the Problems In order to solve the above-mentioned problems of the prior art, the present invention provides a method in which a convex strip is formed on the inner surface of an operating tube bent at an obtuse angle, and the tube wall is formed in a spiral shape to form a convex strip. It has a spiral configuration.

Function According to the present invention, the dust-laden air containing mites collides with force against the convex strip at the bent portion of the operating tube. Therefore, even if the amount of suction air decreases due to an increase in the amount of dust collected, reliable mite treatment can be performed. In addition, if the convex stripes are formed on the spiral pipe wall, the collision of dust mites will be ensured.
Moreover, the operability of the operation tube is also improved.

Example Examples thereof will be described below with reference to the accompanying drawings.

In the figure, the suction passage leading to the filter of the cleaner body 1 is composed of two extension pipes 2.3, an operating pipe 4 bent at an obtuse angle, and a hose 4'. Above operation tube 4
Since the tube wall is constructed in a spiral shape, a convex strip 6 is formed in the curved portion, which also protrudes inwardly in a spiral shape.

In the above configuration, the dust-containing static electricity sucked through the floor nozzle/L/6 etc. is bent when flowing through the operation tube 4 and collides with the protrusion 5 without fail. Therefore, the dust mites in the dust-containing air are killed by the impact force at that time, are filtered together with the dust, and are collected in the dust collecting section.

Further, as described above, if the protruding strip 6 is formed in a spiral shape on the wall of the operating tube 4, the suction airflow will swirl, and the collision of dust mites with the protruding strip 6 will be ensured as a layer. Easy to grip and easy to operate.

Effects of the Invention As described above, according to the present invention, it is possible to reliably kill dust mites in dust-containing air regardless of the amount of dust collected, etc. In particular, in the present invention, the vacuum cleaner main body or filter can be left as is. In addition to this, it is possible to provide a reasonable dust mite-proof vacuum cleaner.

Furthermore, since the wall of the operating tube is spirally shaped to form convex stripes, not only is the mite treatment more reliable, but the operability itself is also improved.

[Brief explanation of the drawing]

FIG. 1 is a cutaway sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is a perspective view of the whole. 2.3... Extension tube, 4... Operation tube, 5
・・・・・・Protrusions.

Claims (2)

[Claims] (1) A vacuum cleaner in which the suction passage leading to the filter is composed of a hose, an operating tube, and an extension tube, the operating tube is bent at an obtuse angle, and a protrusion is formed on at least the inner surface of the bent portion. (2) The vacuum cleaner according to claim 1, wherein the tube wall corresponding to the bent portion of the operation tube is formed in a spiral shape, and the protruding stripes are formed in a spiral shape.