EP0815788A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrocyclone vacuum cleaner and electrocyclone filter cartridge for same
Assignee: Candy SpA
•
Filing: 1996-11-02
•
Granted: —
•
Expires: 2016-11-02
Abstract
Abstract Movable domestic or industrial vacuum cleaner in which the dust is trapped in a dust collecting chamber (7) by a combination of centrifugal and electrostatic actions, dust-laden air being carried at high speed into a helical tube (13) that is housed in the chamber (7) and opens on the inside of the latter. The walls of the tube (13) are given an electric charge by triboelectric action and, while larger and denser particulates are deposited in the chamber (7) by centrifugal action, finer particulates are attracted electrostatically and deposited on the external wall of the helical tube (13).
Inventors
- 👤 Lorella Annovazzi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:52
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/16; A47L9/1608; A47L9/1616; A47L9/1625; A47L9/1633; A47L9/165
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
Mobile vacuum cleaner, of domestic or industrial
type, in which suction means (4) convey a stream of air
through filter means for trapping particulates carried by
the stream of air, characterized in that said filter
means comprise: a chamber (7, 23, 30, 35) for collecting the
particulates, with an outflow mouth (16), and a helical pipe (13, 25, 34, 37) housed inside
said collecting chamber with an inlet mouth (21) that
opens on the outside of said chamber to receive said
stream of air and an outlet mouth (14) that opens on the
inside of said chamber, said pipe (13, 25, 34, 37) having at least one
portion of a wall separating said pipe from said chamber
(7, 23, 30, 35) and made of a dielectric material that
can be given an electric charge by triboelectric action,
in such a way that said particulates carried by said
stream charge the surface of said wall portion at least,
with an electric charge and said charge attracts the
particulates blown into said collecting chamber.
Claim 2
Dependent Claim
48 words
Vacuum cleaner according to Claim 1, in which
said pipe is formed by a helical plastic tube (13) and
said collecting chamber is formed by a cylindrical body
(7) closed at one end, which helical tube opens on the
inside of said collecting chamber near said closed end.
Claim 3
Dependent Claim
84 words
Vacuum cleaner according to Claim 1, in which
said collecting chamber is formed by a tub (30) with an
inner partition (31) to divide the internal volume of
said tub into a central volume (31A) and an annular ring
(31B), and by a bell (32) positioned over said tub and
having peripheral walls (33) inserted in said annular
ring so as to form a labyrinth path between said central
volume and the outside of said tub, said pipe being
housed inside said central volume.
Claim 4
Dependent Claim
53 words
Vacuum cleaner according to Claim 3, in which
said inner partition (31) is made of a plastic material
that can be given an electric charge by triboelectric
action and said pipe is formed by a screw (37) with a
hollow core housed inside said inner volume and sealed in
by said inner partition.
Claim 5
Dependent Claim
34 words
Vacuum cleaner according to Claim 3 or 4, in
which said peripheral walls (33) of the bell (32) are
made of a plastic material that can be given an electric
charge by triboelectric action.
Claim 6
Dependent Claim
23 words
Vacuum cleaner according to previous claims, in
which said filter means are housed removably inside a
body forming part of said vacuum cleaner.
Claim 7
Dependent Claim
25 words
Vacuum cleaner according to Claim 6, in which
said collecting chamber is separable from said pipe or
from at least a portion of said pipe.
Claim 8
Dependent Claim
23 words
Vacuum cleaner according to Claim 6, as dependent
upon Claims 3, 4 or 5, in which said bell is separable
from said tub.
Claim 9
Dependent Claim
16 words
Filter cartridge for vacuum cleaner according to
previous claims, comprising said collecting chamber and
said pipe.
References Cited (Backward Citations)
EP0018197A1
Cited
EP0042723A2
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.