Gas separation: apparatus – With gas and liquid contact apparatus – Liquid bath or reservoir for contact
Patent
1997-09-09
2000-02-01
Chiesa, Richard L.
Gas separation: apparatus
With gas and liquid contact apparatus
Liquid bath or reservoir for contact
96337, 96342, 96346, 96348, 96351, 96360, 96361, 15353, 55DIG3, B01D 4702
Patent
active
060198265
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention has as object a vacuum cleaner of the type with suction path at least partially submerged in a container of water.
This invention can be used as a domestic vacuum cleaner for thorough cleaning of rooms and also as an industrial vacuum cleaner.
BACKGROUND ART
Vacuum cleaners, are already known in prior art. The traditional ones, are essentially made up of a body, supported by feet or pivoting wheels, inside of which an engine group is provided, which sucks the external air with the dirt to be filtered and put back into circulation. Such equipment, sucking the air through a tube, which is gripped by the user, generally allows, according to necessity, the cleaning of dust from carpets, mats, moquette, and similar surfaces, but even more recently the actual floor. The air sucked in this way firstly passes at least one filter, which is generally made up from the same dust-collecting bag, to then, once filtered, be reintroduced, as we have seen, into the surrounding environment. Generally, the filter-bag is made of a particular type of closely-woven material, allowing in this way the circulation of the sucked air, but keeping on the inside only the macrodust and the larger type of dirt.
In the above mentioned solution various drawbacks are noticeable. Firstly amongst these, is the fact that a thorough cleaning of the surface being treated is not possible, but also the fact that an innumerable amount of microdust is reintroduced, which once sucked and removed cannot be held by the traditional filter-bags. Amongst other things, there is the common opinion that the microdust also found between domestic walls is the cause of innumerable allergies verifiable in individuals who frequently complain of annoying symptoms.
A recent solution, consisted in providing in a combined form with a traditional vacuum cleaner, the use of a device also able to wash the surfaces at the same time. More in particular, said equipment always consists of a movable body to which a suction engine group is associated, but on the inside of which a tank is obtained that contains water to distribute on the surfaces to be treated. The air, together with the water previously dispersed by a delivery device applied onto the tube, is subsequently sucked and in this way introduced inside said tank. Here, a kind of right-angled fan placed in correspondence to the sucked air's exit hole, rotating, creates an area of depression that obstructs the reintroduction of the dust agitating at the same time both the water and the air. In this way a precipitation of water and dust is obtained thanks to its catalytic effect, discharging into the surrounding environment only the sucked air partially purified of such residues.
However, also in this case there are noticeable drawbacks. These consist firstly in the fact that the aforesaid equipment cannot operate exclusively as a vacuum cleaner. Secondly, as the surfaces are treated with liquids they remain somewhat damp, even if for a short period of time, which limits the utility and field of the application. Third but not last aspect, the equipment results somewhat complicated and does not allow to further optimize the filtering function of the sucked air.
In the Italian Patent Application N.degree. TV91A000117, an equipment particularly vacuum cleaner and relative filter is described, in which a body is provided for the support of a suction group, and a container, inside of which, in contact with a quantity of water previously introduced and in proximity to the suction mouth, a filter is engaged, said filter being obtained by the processing of vegetal and/or animal fibers. Also state of the art, is the Italian Patent Application for industrial invention N.degree. TV92A000005, consisting in an improvement of said patent, in which, on the inside of the container the following is provided: least partially submerged in an amount of water contained in the underlying basin, said means being directly connected to the suction collector of the air externally extracted; means of distribut
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patent: 5343592 (1994-09-01), Parise
Chiesa Richard L.
Hopkins Robert A.
W.S. S.p.A.
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