Gas separation: apparatus – With gas and liquid contact apparatus – Liquid bath or reservoir for contact
Patent
1996-01-22
1999-07-20
Chiesa, Richard L.
Gas separation: apparatus
With gas and liquid contact apparatus
Liquid bath or reservoir for contact
15353, 261123, B01D 4702
Patent
active
059251719
DESCRIPTION:
BRIEF SUMMARY
This invention has for object a vacuum cleaner apparatus of the type having an inner container partially submerged in water.
The innovation finds particular even if not exclusive application in the sector of electric and professional appliances destined to clean environments to perfection.
At the present stage of technology, vacuum cleaner apparatuses are well known. The more traditional ones are composed essentially of a body, supported by feet or rotating wheels, inside of which is provided a motor group to suction the external air jointly with the dirt, to be filtered and then re-introduced into circulation. Such an apparatus, suctioning the air through a nosepiece held by the user, commonly allows, depending on necessity, the cleaning of dust from carpets, mats, reed-mats, fitted carpets, and similar surfaces, as well as the actual floor. The suctioned air first passes through at least one filter, which generally consists of the dustbag itself, then once filtered is re-introduced, as we have seen, in the surrounding environment. Generally, the dustbag-filter is made of a particular type of fine-meshed cloth, allowing the circulation of the suctioned air, but retaining inside the large dust particles and general grit.
In the solution shown above, different drawbacks are noticeable. Amongst these, firstly noticeable is the fact that a careful cleaning of a surface undergoing treatment is not possible, but also the fact that an enormous quantity of superfine dust is re-introduced, which once vacuumed and removed cannot be retained by the traditional dustbag-filter. Furthermore, it is somewhat common knowledge that this superfine dust seems to be the cause of innumerable allergies suffered by individuals living within the household walls and causes them to suffer annoying symptoms.
A recent solution has consisted in providing a form combined with a traditional vacuum cleaner, the use of a device suitable also for the simultaneous washing of surfaces. More in particular, such an apparatus always consists in one movable body to which a suction motor group is associated, but which has an internal tank which contains water to be distributed onto the surfaces to be treated. The air, together with the water previously dispersed from a delivery device applied to the nosepiece, is subsequently suctioned and therefore introduced into the interior of the tank. Here, a kind of perpendicular fan placed in correspondence with the exit hole of the suctioned air, by rotating, creates a depression zone which, while blocking the reintroduction of the dust, agitates at the same time both the water and the air. One therefore obtains a precipitation of dust and water thanks to its catalytic effect, discharging into the surrounding environment only air, partially purified of such wastes. But also in such a case drawbacks are noticeable, which consist firstly in the fact that the aforesaid apparatus cannot operate exclusively as a vacuum cleaner. Secondly, treating the surfaces with liquids leaves them quite damp for a short period, which limits their use. The third but not last aspect is that it appears to be a somewhat complicated apparatus that does not allow further optimization of the filtering function of the suctioned air.
In DE.A,4107535 and in the IT patent application n.TV91A000117, a particular vacuumcleaner and relative filter apparatus is described, in which is provided a body for the support of a suction group and a container, in the interior of which is used, in contact with a quantity of previously introduced water and in proximity to the suction mouth, a filter, said filter being obtained from vegetable and/or animal fibres. Also state of the art is the IT patent application n.TV92A000005, consisting of an improvement to the preceding patent, in which is foreseen the fact that inside the container there is: partially submerged in a quantity of water contained in the underlying basin, the afore-mentioned being directly connected to the suction means of the air drawn from the exterior; distribution of the suction
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