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EP 0 832 696 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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12.03.2003 Bulletin 2003/11 |
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Date of filing: 27.02.1997 |
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International Patent Classification (IPC)7: B08B 3/00 |
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Flushing, sanifying, pickling and degreasing system using steam
System zum Spülen, Sanieren, Beizen und Entfetten mittels Dampf
Système pour rincer, assainir, décaper et dégraisser au moyen de vapeur
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Designated Contracting States: |
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BE CH DE DK ES FR GB LI |
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Priority: |
30.09.1996 IT TO960799
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Date of publication of application: |
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01.04.1998 Bulletin 1998/14 |
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Proprietor: R.E.A. s.n.c. di Sassi e Baudin & C. |
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10028 Trofarello (Torino) (IT) |
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Inventors: |
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- Sassi, Virginio
10024 Moncalieri (Turin) (IT)
- Sassi, Stefano
10024 Moncalieri (Turin) (IT)
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Representative: Robba, Eugenio et al |
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Studio "INTERPATENT"
via Caboto 35 10129 Torino 10129 Torino (IT) |
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References cited: :
US-A- 3 687 156
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US-A- 4 235 642
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention refers to a flushing, sanifying, pickling and degreasing system
using steam, joined to suitable substances or mixtures.
[0002] It is known how to-date surface cleaning systems in different fields have a few solutions
available pertaining to a specific case, and how these solutions do not always get
a satisfying result nor solve the residual disposal issue.
[0003] Some illustrative examples are, in mechanics, the frequent use of solvent or degreasing
petrols, the use of highly pressurized water, the use of sanding or even ultrasounds.
[0004] In the foodstuff field, other examples are the use of anti-bacterial liquids or foams,
of ultraviolet rays and also of highly pressurized water jets.
[0005] All these prior art mentioned systems are costly due to disposals and moreover they
are quite polluting.
[0006] US 3,687,156 discloses a power washer system comprising a steam source, a low-pressure
water circuit and several mixers for mixing an additive with steam or hot water so
as to obtain a mixture. The mixture is then used by an operator by means of a pressure
wash gun.
[0007] Object of the present invention is solving the above-mentioned inconveniences providing
a practical and economical system that allows avoiding huge wastes of water and related
components, finally obtaining a harmless residual that is easily disposable, in addition
to an optimally clean surface ready to be further worked.
[0008] The system of the invention is composed of a unit equipped with an internal steam
source or a source of steam taken from outside, said steam being saturated and at
a high temperature; in parallel a low-pressure water circuit supplies a water mixing
system with detergents, pickling agents, phosphating agents, protective agents and
the like; everything, that is saturated steam plus mixture, is used downstream of
the unit as desired in an automatic plant or by means of an handle that allows an
operator to choose a type of operation to be carried out and a type of desired mixture.
[0009] The system potentiality is that steam can be easily coupled with different detergents
or various solutions or water, thereby allowing to operate on surfaces to be treated
by making dirt removable and leaving these surfaces practically free from moist.
[0010] Some examples of workings that can be carried out with the system of the invention
will now be described:
- for the mechanics field: steam + detergent, or steam + phosphating agent, or steam
+ protective agent, or steam only;
- for the foodstuff field: steam only, or steam + water, or steam + detergent or disinfectant,
and so on.
[0011] The system of the invention will now be described in detail with particular reference
to the enclosed drawing that shows a system block diagram.
[0012] This system is substantially composed of a unit, equipped with an internal steam
source or a source of steam taken from the outside, said steam being saturated and
at a high temperature.
[0013] In the figure, said high temperature, saturated steam source is designed as 1.
[0014] In parallel, there is provided a mixer 3 where the following converge: water 5, the
detergent 7, the phosphating agent 9, the protective agent 11, the anti-bacterial
agent 13, the disinfectant agent 15, and other agents 17, 19, 21.
[0015] Downstream of the mixer 3 there is provided a plant 23 using the mixture of steam
+ water + suitable substance, for example a detergent, or an handle 25 that allows
the operator to choose the type of operation to be carried out and the type of desired
mixture.
[0016] Downstream of the handle 25, reference number 27 shows the article towards which
the steam jet is directed, suitably mixed with detergent 7, phosphating agent 9 and
so on, depending on the operation to be carried out.
1. Flushing, sanifying, pickling and degreasing system using steam comprising:
- a unit equipped with a steam source (1) that is internal or external to said unit,
said steam being saturated;
- a low-pressure water circuit (5) in parallel to said steam source;
- a first mixer for mixing at least one additive of a plurality of additives with
said steam, characterised in that said low pressure water circuit (5) comprises a second mixer (3) for mixing said
at least one additive of a plurality of additives (7,9,11,13,15,17,19,21) with water
from said low pressure water circuit (5), said second mixer being arranged upstream
of said first mixer.
2. System according to claim 1, characterised in that said at least one additive is selected from a group of additives comprising: detergents
(7), pickling agents, phosphating agents (9), protective agents (11), anti-bacterial
agents (13) and disinfectant agents (15).
3. System according to claim 1 or 2, characterised in that the mixture obtained downstream of said first mixer is usable as desired in a automatic
plant (23).
4. System according to claim 1 or 2, characterised in that the mixture obtained downstream of said first mixer is usable as desired by means
of an handle (25) that allows an operator to choose a type of operation to be carried
out and a type of desired mixture.
1. System zum Spülen, Sanieren, Beizen und Entfetten mittels Dampf, bestehend aus:
- einer mit einer inneren oder äußeren Dampfquelle (1) ausgerüsteten Einheit, wobei
der Dampf gesättigt ist;
- einem mit der Dampfquelle parallel geschalteten Niederdruck-Wasserkreislauf (5);
- einem ersten Mischer zum Vermischen von mindestens einem von vielen Additiven mit
dem Dampf,
dadurch gekennzeichnet, daß der Niederdruck-Wasserkreislauf (5) einen zweiten Mischer (3) zum Vermischen des
mindestens einen von vielen Additiven (7, 9, 11, 13, 15, 17, 19, 21) mit Wasser aus
dem Niederdruck-Wasserkreislauf (5) aufweist, wobei der zweite Mischer stromaufwärts
des ersten Mischers angeordnet ist.
2. System nach Anspruch 1,
dadurch gekennzeichnet, daß zumindest ein Additiv aus einer Gruppe von Additiven ausgewählt ist, die enthält:
Detergentien (7), Beizmittel, phosphatierende Wirkstoffe (9), schützende Wirkstoffe
(11), antibakterielle Wirkstoffe (13) und Desinfektionsmittel (15).
3. System nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die stromabwärts vom ersten Mischer anfallende Mischung in einer automatischen Anlage
(23) in gewünschter Weise einsetzbar ist.
4. System nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die stromabwärts vom ersten Mischer anfallende Mischung mittels eines Griffs (25)
in gewünschter Weise gebraucht werden kann, der einem Benutzer erlaubt, eine Betriebsart
und den Typus einer gewünschten Mischung auszuwählen.
1. Système de nettoyage, d'assainissement, de décapage et de dégraissage à la vapeur
d'eau comprenant :
- une unité équipée d'une source de vapeur d'eau (1) qui est interne ou externe à
ladite unité, ladite vapeur d'eau étant saturée ;
- un circuit hydraulique à basse pression (5) parallèle à ladite source de vapeur
d'eau ;
- un premier mélangeur destiné à mélanger au moins un additif d'une pluralité d'additifs,
avec ladite vapeur d'eau
caractérisé en ce que ledit circuit hydraulique à basse pression (5) comprend un deuxième mélangeur (3)
destiné à mélanger ledit au moins un additif choisi parmi une pluralité d'additifs
(7, 9, 11, 13, 15, 17, 19, 21) avec l'eau provenant dudit circuit hydraulique à basse
pression (5), ledit deuxième mélangeur étant disposé en amont dudit premier mélangeur.
2. Système selon la revendication 1, caractérisé en ce que ledit au moins un additif est choisi dans un groupe d'additifs comprenant : les détergents
(7), les décapants, les agents de phosphatation (9), les agents protecteurs (11),
les agents anti-bactériens (13) et les désinfectants (15).
3. Système selon la revendication 1 ou 2, caractérisé en ce que le mélange obtenu en aval dudit premier mélangeur peut être utilisé comme souhaité
dans une installation automatique (23).
4. Système selon la revendication 1 ou 2, caractérisé en ce que le mélange obtenu en aval dudit premier mélangeur peut être utilisé comme souhaité
au moyen d'un dispositif de manipulation (25) qui permet à un opérateur de choisir
un type d'opération à réaliser et un type de mélange souhaité.