JPH01223921A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To prevent a fine powder dust incapable of being easily viewed with a naked eye from being scattered to a circumference by providing a mechanism for feeding an exhaust air in which the dust is removed from a suction air in a dust collecting part to the internal side of a nozzle again and recirculating as the suction air for sucking the dust. CONSTITUTION:A suction air including a dust is fed to a main body 20 through the suction part 11 of a nozzle 10, preferably through a suction passage 13 of a hose 12 constituted in a double pipe, and the dust is removed in a dust collecting bag 21 prepared for the main body 20 to obtain an exhaust air. The exhaust air emitted from the dust collecting beg 21 is preferably passed through a filter once, and fed to the nozzle 10 by the driving of an exhaust fan 30 or directly through the exhaust passage 14 of the hose 12 without using the exhaust fan 30, and discharged to the lower face space of the nozzle 10, preferably from the external peripheral direction of the lower face space of the nozzle. The discharged air discharged to the lower face space of the nozzle 10 is recirculated as the suction air for sucking the dust without being discharged externally.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum cleaner that is improved so as not to scatter fine dust to the surroundings.

[Conventional technology]

Vacuum cleaners use a motor to rotate blades at high speed to create a low pressure inside the vacuum cleaner, which sucks in dust along with air, separates it in a dust collector, and discharges the air to the outside.

The dust that is sucked in with the air contains a large amount of dust of different sizes, and while large sized dust can be removed by the dust collection bag acting as a filter, fine dust passes through with the air. , which will scatter dust into the surrounding area.

In order to eliminate these harmful effects, the conventional methods were: A: Make the mesh of the dust collection bag finer. B: Prepare a separate filter. C: Release the air from the dust collection bag to a water filter before releasing it to the outside. Prepare an exhaust pipeline in the center of room D, etc.
Solutions have been taken, such as discharging the exhaust air to the outside of the room.

[Problem to be solved by the invention]

As mentioned above, various efforts have been made to prevent fine dust from being scattered around by the exhaust air of a vacuum cleaner, but the situation is still not satisfactory.

That is, with methods A to C described above, although it has come to be possible to remove a large amount of dust that is visible to the naked eye, it has not yet been possible to remove very fine dust that is difficult to see with the naked eye.

Although method D is an extremely effective solution, it has disadvantages such as requiring expensive special equipment and being limited in available locations, so it has not been widely used.

For this reason, the fact remains that using a vacuum cleaner will scatter fine dust into the surrounding area.

In view of the above, the main purpose of the present invention is to provide an improved vacuum cleaner that is less likely to scatter even fine dust that cannot be easily seen with the naked eye. Other objects and advantages of the present invention will become apparent from the following description and accompanying drawings.

[Means to solve the problem]

The above-mentioned problem can be solved by providing a vacuum cleaner with a mechanism in which exhaust air from which dust has been removed from intake air in a dust collecting section is sent to the inside of the nozzle again and recycled as intake air for sucking dust.

[Effect]

The intake air sucked together with dust from the nozzle is collected in the dust collection bag 2.
The dust is separated from the dust in the dust collection section consisting of a vacuum cleaner and becomes exhaust air, but instead of being discharged outside the machine as in conventional vacuum cleaners, it is preferably passed through a -degree filter and used for exhaust air. The air is sent as it is to the nozzle 10 by driving a fan or without passing through an exhaust fan, and is discharged into the space below the nozzle 10, where it is recycled to become intake air that sucks in dust.

〔Example〕

An embodiment of a vacuum cleaner to which the present invention is applied will be described with reference to FIG.

In the drawing, arrows indicate the flow of intake air and exhaust air, and the intake air containing dust flows through the intake section 1 of the nozzle IO.
1. The air is sent to the main body 20 through the intake passage 13 of the hose 12, which is preferably configured as a double pipe, and the dust is removed by a dust collection bag 21 provided in the main body 20, and becomes exhaust air.

Preferably, the exhaust air coming out of the dust collection bag 21 is passed through an -i filter and then passed through the hose 1 by driving the exhaust fan 30 or directly without going through the exhaust fan 30.
The gas is sent to the nozzle 10 through the exhaust passage 14 of No. 2, and is discharged through the exhaust section 15 into the space below the nozzle IO, preferably from the outer circumferential direction of the space below the nozzle as shown.

The exhaust air discharged into the space under the nozzle 10 is not discharged to the outside, but is recycled in the above-described order as intake air for sucking dust.

As mentioned above, the feature of the vacuum cleaner according to the present invention is that the air sucked in together with dust is guided to the nozzle part and reused as intake air without being discharged to the outside. The present invention is not limited to the embodiments described above, but includes a wide range of variations, some of which are illustrated below.

A. It is not limited to vertical or horizontal models, but can be applied to any model that sucks in dust together with air, separates the dust from the intake air in the dust collection section, and then discharges the air to the outside of the machine. It is.

Depending on the model, unlike the illustrated vacuum cleaner, some vacuum cleaners do not utilize components such as nozzles and hoses; however, the present invention does not exclude these types of vacuum cleaners, and the present invention does not exclude these types of vacuum cleaners. will take various specific configurations depending on the type of vacuum cleaner.

B. In the vacuum cleaner of the present invention, an operation part, a nozzle part,
Regarding the individual configurations of the drive unit, dust collection unit, filter, etc., various conventionally known improvements may be incorporated into the configuration of the vacuum cleaner of the present invention, provided that they do not contradict the principles of the present invention described above. It can be applied as a part.

C. In order to prevent the exhaust air from the nozzle portion from scattering, it is necessary to take measures to prevent the exhaust air from blowing out of the nozzle 10.
In addition to the configuration in which exhaust air is exhausted from the outer circumferential direction and air is taken in near the center, the exhaust part 15 is arranged at the center of the lower surface of the nozzle 10 so that the exhaust air flows from the center of the nozzle 10 to the periphery.
It should be constructed so that air is taken in around the exhaust part.

D. Constructed to use the air ejected from the nozzle IO to blow up and suction dust accumulated in floor grooves, tatami mats, sash tongues, etc.

E. Constructed so that the jet of exhaust air is used to operate the rotating brush, swatting plate, etc. provided in the nozzle part.

F. To make the intake air-exhaust air recycling mechanism into a unit so that it can be used by attaching it to a conventional vacuum cleaner. For example, a pipe can be connected to the exhaust port of a conventional vacuum cleaner, and the tip of the pipe can be guided to a special, replaceable nozzle.

〔Effect of the invention〕

The exhaust air is sent to the nozzle and recycled as intake air, which is sucked in along with dust, so unlike conventional vacuum cleaners, even fine dust that is invisible to the naked eye will not be scattered around. There are advantages and it is possible to achieve the above objectives.

In addition, the exhaust air ejected from the nozzle is used to remove dirt and dust buried in grooves and dustpans, and to remove and suction stuck objects, which significantly collects air compared to conventional vacuum cleaners. This has the advantage of improved dust performance.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a TL vacuum cleaner to which the present invention is applied. In the figure, each symbol indicates the following. 10: Nozzle 11: Intake part 12: Hose 13: Intake passage 14: Exhaust passage 15: Exhaust part 20: Vacuum cleaner body 21: Dust collection bag 30: Exhaust fan Patent applicant C&I Co., Ltd. Agent Patent attorney Adachi Adachi Yukio Yuki: Nozzle 11: Intake part 12: Hose 13: Intake passage 14: Exhaust passage 15: Exhaust part 20: Vacuum cleaner body 21: Dust collection bag 30: Exhaust fan

Claims (1)

[Claims] A vacuum cleaner characterized by having a mechanism that sends exhaust air from which dust has been removed from intake air to a nozzle again and recycles it as intake air.