EP3213665B1 - Aspirateur industriel pour substances liquides avec un dispositif de détection du niveau de remplissage de son réservoir - Google Patents

Aspirateur industriel pour substances liquides avec un dispositif de détection du niveau de remplissage de son réservoir Download PDF

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Publication number
EP3213665B1
EP3213665B1 EP17158235.6A EP17158235A EP3213665B1 EP 3213665 B1 EP3213665 B1 EP 3213665B1 EP 17158235 A EP17158235 A EP 17158235A EP 3213665 B1 EP3213665 B1 EP 3213665B1
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EP
European Patent Office
Prior art keywords
level
detection device
vacuum cleaner
control signal
control unit
Prior art date
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Application number
EP17158235.6A
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German (de)
English (en)
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EP3213665A1 (fr
Inventor
Giancarlo Bettella
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solarys Srl
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Solarys Srl
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023—Recovery tanks
    • A47L7/0028—Security means, e.g. float valves or level switches for preventing overflow

Definitions

  • the invention relates to the industrial vacuum cleaner sector.
  • the invention concerns an industrial vacuum cleaner, for liquid substances, with detection device of the level of filling of its collection tank.
  • Industrial vacuum cleaners in mobile or fixed version, are machines able to vacuum material, either powders or liquids, in large quantities. They are machines designed to operate for long periods of time in extreme conditions and with the possibility of rapidly discharging the vacuumed material.
  • Conventional vacuum cleaners for liquids essentially comprise at least one vacuum turbine, containment means of the liquid substances vacuumed (generally a cylindrical tank to which a vacuum brush is connected with a flexible hose) and an electrical control unit of the various functions generally positioned on the lid of the tank, which also acts as supporting base for the vacuum turbine.
  • the turbine draws in air, creating a vacuum pressure in the collection tank: the vacuumed air draws with it the liquids, which fill said tank.
  • the float When the liquid in the tank has reached a predefined maximum safety level, the float is raised by the same liquid, so as to operate said micro switch, causing closing of the electrical circuit connected to said electrical control unit.
  • the electrical control unit stops the turbine of the vacuum cleaner to prevent further liquids from being introduced into the tank.
  • the change of state signal is transmitted from the micro switch to the electrical control unit by means of said wired connection that joins the housing positioned in the tank to the control unit associated with the lid.
  • a wired connection can be subject to undesirable malfunctions.
  • a wired connection, without protection can in fact be accidentally tampered with, for example with detachment, even partial, of the cable, without faults and problems being indicated. Therefore, there is the risk of the device failing to correctly detect that the maximum filling level has been reached, and of excess liquids being vacuumed, with the drawbacks described above.
  • the operator in vacuum cleaners of small size, after having disconnected the cable from the control unit to remove the lid and empty the tank, may reconnect the cable incorrectly, or even forget to connect it, making the maximum level indicator device useless.
  • the vacuumed liquid inside the collection tank often reaches conditions of turbulent motion, thereby creating vortices.
  • the waves created by the liquid in its swirling movement can accidentally raise and lower the float several times, causing a succession of changes of status of the micro switch, even before the maximum filling level is reached in the tank.
  • Continuous contacts and releases of the micro switch cause continuous pulses to generate a control signal to stop the turbine.
  • the device is activated and deactivated continuously, without carrying out its correct function, causing the operator to disconnect the signal cable to deactivate the device.
  • WO0042893A2 discloses an example of an industrial vacuum cleaner for liquid substances with detection device of the level of filling of its tank according to the prior art.
  • the object of the invention is to eliminate these problems, producing an industrial vacuum cleaner with detection device of the level of filling with improved technical and functional performances with respect to prior art devices, with particular attention to management of consumptions.
  • the aim is achieved with an industrial vacuum cleaner for liquid substances with detection device of the level of filling of its collection tank, wherein said vacuum cleaner comprises:
  • said wireless technology is of radio wave type.
  • said emitter comprises battery power supply means
  • said receiver comprises connection means to an electrical power supply network with interposition of a transformer.
  • said emitter comprises means for setting the duration of said control signal generated.
  • said electrical control unit comprises resettable blocking means of said at least one turbine, activated by the first pulse generated by said control signal.
  • said resettable blocking means comprise a selector switch of manually controlled type.
  • said resettable blocking means comprise a lever adapted to operate said selector switch from the outside of the lid of the vacuum cleaner where said electrical control unit is housed.
  • said resettable blocking means comprise visual signalling means of the blocked condition of said at least one turbine.
  • Wireless technology ensures optimal performance without the risk of malfunction: in fact, no cable is exposed outside the vacuum cleaner.
  • Wireless technology in particular electromagnetic waves, always ensures transmission of the control signal from the emitter to the receiver.
  • the circuit board comprises setting means that allow setting of the maximum emission time of the control signal, with significant savings in terms of energy absorption and consequent increased duration of the power supply battery of the emitter.
  • the resettable blocking means of said turbine inhibit the operation of the turbine at the first pulse generated by the micro switch: the control unit manages the control signal only once, preventing the device from continuing to activate and deactivate due to repeated oscillations of the float, at the mercy of the waves generated by swirling of the flow of vacuumed liquid.
  • the visual signalling means of the blocked condition of the turbine facilitate the work of the operator, immediately referred to the operations to reset the device.
  • an industrial vacuum cleaner 1 for liquids comprising:
  • Said vacuum cleaner 1 comprises a detection device 2 of the level of liquid L reached in said tank 4.
  • said device 2 comprises:
  • Said transmission means comprise an emitter 9 and a receiver 10 in communication with each other.
  • Said emitter 9 is associated with a circuit board, in turn associated with said micro switch 8, and is provided with battery power supply means 11.
  • Said receiver 10 is associated with said electrical control unit 5 and comprises connection means to an electrical power supply network.
  • a transformer for example 230v-12v is interposed between said receiver 10 and said electrical power supply network.
  • Said emitter 9 and said receiver 10 communicate with systems based on wireless technology, without cables and physical connections.
  • said wireless technology is of electromagnetic wave type, in particular radio wave type.
  • said float 7 as a result of the vacuumed liquid L reaching the maximum level MAX of filling of the tank 4, is thrust upward in said housing 6, until its magnetic field interacts with said micro switch 8 ( Fig. 4 ).
  • Said change of state is managed by said circuit board to generate a control signal that said emitter 9 will send via radio waves to said receiver 10 so that it is then managed by the electrical control unit 5 on which the same receiver is provided.
  • Said control signal is thus adapted to cause said vacuum turbine 3 to stop upon reaching a predefined maximum level MAX of filling of the tank 4 of the liquids.
  • Said emitter 9 comprises setting means (not illustrated) of the duration of said control signal generated.
  • An optimal, but purely indicative, duration time of the control signal is of a few seconds, for example 5 seconds.
  • Said electrical control unit 5 comprises reversible resettable blocking means (not illustrated) of said at least one vacuum turbine 3, activated by the first pulse generated by said control signal received by said receiver 10.
  • Said blocking means comprise visual signalling means 13 of the blocked condition of said at least one turbine 3.
  • Said electrical control unit 5 comprises resetting means of said blocking means that can be operated from the outside of said control unit, adapted to reactivate said at least one turbine 3, once the vacuumed liquids L have been emptied from the tank 4.
  • Said resetting means comprise a selector switch 12 of manually controlled type.
  • Said resetting means comprise a selector switch 12 of manually controlled type.
  • to reset the blocking means of the turbine it is necessary to position the selector switch 12 to OFF, corresponding to the vacuum cleaner 1 being switched off, and then to move it to ON and/or modulate it to the various vacuum speeds of the turbine 3.
  • said resetting means comprise a lever adapted to operate said selector switch.
  • the movement of said lever is also associated with reversal of the vacuum flow of the turbine, which no longer flows into the liquid containment means, but in the opposite direction, with the aim of discharging the liquid and emptying of the tank.

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Level Indicators Using A Float (AREA)

Claims (8)

  1. Aspirateur industriel (1) pour substances liquides avec dispositif de détection (2) du niveau de remplissage de son réservoir de collecte, où ledit aspirateur (1) comprend :
    - au moins une turbine d'aspiration (3) ;
    - un réservoir de collecte (4) des produits liquides aspirés (L) ;
    - une unité de contrôle électrique (5) pour le contrôle des différentes fonctions ;
    - un dispositif de détection (2) du niveau de liquide atteint dans ledit réservoir (4), comprenant un logement (6) obtenu dans ledit réservoir (4), un flotteur (7), prévu à l'intérieur dudit logement (6), et un micro-interrupteur (8), où ledit flotteur (7), se soulevant par effet de l'augmentation du niveau de liquide (L), coopère avec ledit micro-interrupteur (8) pour modifier son état et générer un signal de contrôle, gérable par ladite unité de contrôle électrique (5), pour arrêter ladite turbine d'aspiration (3) au minimum, lorsqu'un niveau de remplissage maximum prédéfini est atteint ;
    - des moyens de transmission dudit signal de contrôle entre ledit dispositif de détection (2) et ladite unité de contrôle électrique (5),
    caractérisé par le fait que :
    - ledit dispositif de détection (2) comprend un circuit imprimé comprenant un émetteur (9) d'un signal de contrôle à onde électromagnétique, ledit signal de contrôle étant généré par effet du changement dans l'état dudit micro-interrupteur (8) ;
    - ladite unité de contrôle électrique (5) comprend un récepteur (10) prévu pour recevoir ledit signal de contrôle à onde électromagnétique,
    où lesdites moyens de transmission dudit signal de contrôle sont de type sans fil.
  2. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 1, caractérisé par le fait que ladite technologie sans fil et de type à onde radio.
  3. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 1, caractérisé par le fait que ledit émetteur (9) comprend des moyens d'alimentation à batterie (11), et ledit récepteur (10) comprend des moyens de connexion à un réseau d'alimentation électrique avec interposition d'un transformateur.
  4. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 1, caractérisé par le fait que ledit émetteur (9) comprend des moyens pour définir la durée dudit signal de contrôle généré.
  5. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 1, caractérisé par le fait que ladite unité de contrôle électrique (5) comprend des moyens de blocage réarmables de ladite turbine (3) au minimum, activés par la première impulsion générée par ledit signal de contrôle.
  6. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 5, caractérisé par le fait que lesdits moyens de blocage réarmables comprennent un interrupteur de sélection (12) de type à contrôle manuel.
  7. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 5, caractérisé par le fait que lesdits moyens de blocage réarmables comprennent un levier prévu pour actionner ledit interrupteur de sélection (12) depuis l'extérieur du couvercle (15) de l'aspirateur (1) où ladite unité de contrôle électrique (5) est logée.
  8. Aspirateur industriel (1) avec dispositif de détection (2) du niveau de remplissage selon la revendication 5, caractérisé par le fait que lesdits moyens de blocage réarmables comprennent des moyens de signalisation visuelle (13) de la condition de blocage de ladite turbine (3) au minimum.
EP17158235.6A 2016-03-01 2017-02-27 Aspirateur industriel pour substances liquides avec un dispositif de détection du niveau de remplissage de son réservoir Active EP3213665B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB2016A001215A ITUB20161215A1 (it) 2016-03-01 2016-03-01 Aspiratore industriale di sostanze liquide con dispositivo di rilevamento del livello di riempimento del suo serbatoio

Publications (2)

Publication Number Publication Date
EP3213665A1 EP3213665A1 (fr) 2017-09-06
EP3213665B1 true EP3213665B1 (fr) 2018-11-07

Family

ID=56235978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17158235.6A Active EP3213665B1 (fr) 2016-03-01 2017-02-27 Aspirateur industriel pour substances liquides avec un dispositif de détection du niveau de remplissage de son réservoir

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EP (1) EP3213665B1 (fr)
ES (1) ES2709939T3 (fr)
IT (1) ITUB20161215A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3772314A1 (fr) 2019-08-09 2021-02-10 Leifheit AG Aspirateur eau et poussière
DE102019121604B4 (de) * 2019-08-09 2021-12-30 Leifheit Ag Nass-/Trockensauggerät
DE102019121607B4 (de) 2019-08-09 2024-01-04 Leifheit Ag Nass-/Trockensauggerät
DE102019121608B4 (de) 2019-08-09 2023-10-05 Leifheit Ag Nass-/Trockensauggerät
WO2021141778A1 (fr) 2020-01-06 2021-07-15 Techtronic Cordless Gp Système de nettoyage doté d'un arrêt de réservoir à récupération complète

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5465455A (en) * 1994-05-27 1995-11-14 Allen; Harold Overload controlled wet and dry vacuum apparatus
US6112366A (en) * 1999-01-20 2000-09-05 Shop Vac Corporation Outlet priming self-evacuation vacuum cleaner
KR100619787B1 (ko) * 2005-05-17 2006-09-06 엘지전자 주식회사 습식 청소 기능을 구비한 업라이트형 청소기

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP3213665A1 (fr) 2017-09-06
ITUB20161215A1 (it) 2017-09-01
ES2709939T3 (es) 2019-04-22

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