WO2016034279A1 - Dispositif de traitement de l'eau pour une unité de traitement dentaire - Google Patents

Dispositif de traitement de l'eau pour une unité de traitement dentaire Download PDF

Info

Publication number
WO2016034279A1
WO2016034279A1 PCT/EP2015/001760 EP2015001760W WO2016034279A1 WO 2016034279 A1 WO2016034279 A1 WO 2016034279A1 EP 2015001760 W EP2015001760 W EP 2015001760W WO 2016034279 A1 WO2016034279 A1 WO 2016034279A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
treatment device
water treatment
filter
outlet
Prior art date
Application number
PCT/EP2015/001760
Other languages
German (de)
English (en)
Inventor
Andreas HÄGELE
Original Assignee
DüRR DENTAL AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DüRR DENTAL AG filed Critical DüRR DENTAL AG
Publication of WO2016034279A1 publication Critical patent/WO2016034279A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0061—Air and water supply systems; Valves specially adapted therefor
    • A61C1/0084—Supply units, e.g. reservoir arrangements, specially adapted pumps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0061—Air and water supply systems; Valves specially adapted therefor
    • A61C1/0076—Sterilising operating fluids or fluid supply elements such as supply lines, filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0061—Air and water supply systems; Valves specially adapted therefor
    • A61C1/0084—Supply units, e.g. reservoir arrangements, specially adapted pumps
    • A61C1/0092—Pumps specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration

Definitions

  • the invention relates to a water treatment device for a dental treatment unit with a pure water outlet.
  • the invention further relates to a dental treatment unit with such a water treatment device.
  • the dental treatment unit supplies a vial or various dentist's hand instruments, such as a vial. the air-water syringe or water-powered drills, with water. Due to necessary hygiene standards, this water, which is used at the treatment unit, must be sterilized. This has hitherto been done by introducing chemicals such as e.g. H 2 O 2, chlorine or the like, or by ozonization or microfiltration.
  • a disadvantage of the previously used water treatment devices is that the introduction of chemicals pollutes the human organism. Furthermore, the added chemicals attack materials and surfaces of the sensitive dental instruments. Therefore, limit values are specified with regard to the dosage, which limit the effectiveness of the sterilization. In addition, solves the sole The introduction of chemicals does not present the problem that the biomass of already dead germs remains in the pure water and serves there as food for other bacteria. For this reason, microfiltration filters with a pore size of about 200 ⁇ m are additionally used, which are intended to retain bacteria such as Legionella. For viruses, however, these microfiltration filters are not a barrier.
  • Using a fall line to prevent reoccurrence is usually relatively large and must therefore be located in separate rooms of a dental office.
  • the object of the invention is therefore to provide an improved water treatment device.
  • the abovementioned object is achieved with a water treatment device of the type mentioned above, in which a) the water treatment device comprises a free fall section for the water over a water supply, which prevents recontamination into an upstream supply system, and b) the water treatment device at least one
  • Pressure pump in particular a operated with compressed air piston pressure pump, comprises, whose inlet is connected to the water supply and whose outlet with a flow connected to the pure water outlet ultrafiltration filter is connected to supply the water from the water supply under pressure to the ultrafiltration filter and subsequently the pure water outlet.
  • the inventor has recognized that a water treatment device operating basically without chemicals and yet sufficiently compact can be achieved by combining a free fall section with an ultrafiltration filter and a pressure pump, in particular a piston pressure pump operated with compressed air.
  • the actual cleaning process of the water takes place in such a water treatment device by ultrafiltration of the water to an ultrafiltration filter.
  • an ultrafiltration filter preferably has a pore size between about 5 nm to 50 nm, in particular between about 15 nm to 25 nm, and ensures sufficient sterilization of the water.
  • the free fall distance provided according to the invention prevents germs retained in the retentate of the ultrafiltration filter, for example, from reaching the upstream areas of a delivery system.
  • this water in the water supply is present only at ambient pressure, this water can no longer pass through the pores of the ultrafiltration filter for lack of pressure to then supply the different units of the dental treatment unit with the necessary water pressure.
  • the pressure pump provided according to the invention, in particular the piston pressure pump operated with compressed air, the pressure is generated . on the . Water supply is increased again so high that the water with sufficient pressure at the Ultra- filtration filter is available to produce despite the small pore size of the ultrafiltration filter at the end of a pressure corresponding to the usual water pressure at the treatment unit.
  • various types of pumps such as a diaphragm pump or a peristaltic pump, are conceivable as a pressure pump
  • the use of a piston-operated piston operated compressed air pump is particularly advantageous since compressed air must be present at the treatment unit, for example, for blowing out the teeth.
  • a compressed air operated piston pressure pump can be made more compact compared to other pumps with a similar outlet pressure, whereby the total space requirement of the water treatment device is so low that it can be integrated into the dental treatment unit.
  • the ultrafiltration filter can be arranged in a removable filter cartridge whose inlet connection via a
  • the quick-connect system may advantageously comprise a mechanism with which a, on the outlet of the pressure pump arranged, unlockable check valve is unlocked when the filter cartridge is connected.
  • the quick connect system also includes other ports of the filter cartridge, such as a retentate port and / or a filtrate port.
  • an activated carbon filter can be disposed: Ln, which the last remaining germs from the water filters and is preferably located downstream of the ültrafiltrationsfilters.
  • such an activated carbon filter is arranged together with the Oltrafiltrationsfilter in the filter cartridge.
  • it can also be arranged in a separate removable filter cartridge.
  • only the activated carbon filter can be arranged in a filter cartridge.
  • the pressure pump as a piston pressure pump, it is advantageous if two operated in push-pull piston pressure pumps are provided. With the aid of corresponding air-side and water-side valve arrangements, the piston pressure pumps operated in push-pull form a continuous outlet pressure.
  • a double-acting piston pressure pump could be used instead of the two single-acting piston pressure pump, which would also produce a reasonably continuous pressure curve of the output water.
  • the free fall distance over the water supply is realized in that a reservoir for the water supply is provided, which comprises a maximum level device, in particular an overflow, which specifies a maximum level for the water supply.
  • a reservoir for the water supply which comprises a maximum level device, in particular an overflow, which specifies a maximum level for the water supply.
  • One . Feed into the Vörrats employer can then be arranged at least about 20 mm above the maximum level to specify a free fall distance with sufficient height.
  • the inlet can be designed as a tube projecting freely into the storage container, if appropriate with an outlet nozzle, which at no point is covered with de Inside of the walls or the ceiling of the reservoir in contact.
  • Another aspect of the invention relates to a dental treatment unit with such a water treatment device.
  • the dental treatment unit can comprise a treatment column in which the water treatment device is completely accommodated. Due to the smaller size of the water treatment device, it is no longer necessary to provide them in a separate room, but the water treatment device can be integrated directly into the treatment column of the dental treatment unit.
  • FIG 1 is a perspective view of a dental treatment unit with a water treatment device according to the invention
  • Figure 2 is a schematic representation of the water treatment device.
  • FIG. 1 shows a dental treatment unit 10 with a dental chair 12 and a treatment column 14 on which a cuspidor 16 and a dental instrument 18 is arranged ⁇ , which must be supplied with clean water.
  • a water treatment device 20 is arranged in the interior of the treatment column 14, with which the water coming from a conventional water supply installation of the dental practice is treated, ie essentially sterilized, is.
  • the dental treatment unit is connected via a water supply line 22, a sewer line 24 and a compressed air line 26 to the supply installations of the dental practice.
  • FIG. 2 schematically shows the internal structure of the water treatment device 20.
  • a pressure reducer 28 with a pressure indicator 30 and an upstream prefilter 32 is initially provided. Downstream of this pressure reducer 28, a solenoid valve 34 is arranged with an upstream fine filter 36. From the outlet of the solenoid valve 34, a conduit 38 leads into a reservoir 40. The conduit 38 projects through an opening 42 in the ceiling of the reservoir 40 into this, without touching the edge of the opening 42, and has at its end a nozzle 44th on.
  • the storage container 40 itself is designed such that a first free overflow 46 is arranged in a side wall about 20 mm below the nozzle 44. In this way, a maximum level 48 for a water supply 49 in the storage container 40 is predetermined, so that there is always a free fall distance 50 of more than approximately 20 mm between the discharge opening of the nozzle 44 and the water surface in the storage container 40 ,
  • a float 52 is arranged in the reservoir 40, which is equipped with a sensor, here a Hall sensor 54, cooperates.
  • the Hall sensor 54 activates via an electronic control unit and control lines, not shown, the solenoid valve 34 to hold in the reservoir 40, a predetermined water level just below the overflow 46.
  • a second free overflow 56 is also arranged in the reservoir 40 above the first free overflow 46, over which dammed up in an emergency water can flow.
  • an opening 58 is provided, from which suction lines 60 and 62 lead to two identically designed single-acting piston pressure pumps 64.
  • Each piston pressure pump 64 has a cylinder 66 in which a piston 68 runs, the cylinder 66 in a water-side pressure chamber 70 and a compressed air side
  • the water-side pressure chamber 70 has an inlet 74 with an upstream non-return valve 76 and an outlet 78 with a downstream non-return valve 80.
  • the piston 68 is further acted upon via a plunger 82 with a spring 84, which biases the piston 68 in the direction of the compressed air side pressure chamber 72nd
  • the compressed-air side pressure chambers 72 of the piston pressure pumps 64 are provided via two 2/3-way solenoid valves . 86 alternately.mi.t compressed air from the compressed air supply line 26 is applied to the piston 68 in the direction of the water-side pressure chamber 70 to. move, or connected to a venting muffler 88, whereby the piston 6.8 due to the spring force of the spring 84 in the direction of the compressed air side Pressure chamber 72 moves.
  • end position sensors not shown here may be provided.
  • the water-side outlets 78 of the piston pressure pumps 64 are connected to a common line, which leads to a further check valve 90 which is mechanically unlockable. Downstream of this check valve 90, and thus downstream of the piston pressure pumps 64, there is provided a tool-less replaceable filter cartridge 92 which is fastened by a quick connection system (eg a bayonet connection) which is not shown here in detail and which comprises a mechanism 93 which is connected to the filter cartridge 92 the check valve 90 unlocked.
  • a quick connection system eg a bayonet connection
  • the quick-connect system the connections for water (inlet connection), pure water (filtrate connection) and waste water (retentate connection) shown separately in FIG. 2 for the sake of clarity, are preferably combined on one connection side of the filter cartridge 92.
  • the filter cartridge 92 comprises a candle-shaped ultrafiltration filter 94, whose interior communicates with the inlet connection on one side and with the retentate connection of the filter cartridge 92 on the other side.
  • the space between the ultrafiltration filter 94 and the housing wall of the filter cartridge 92 is connected to the filtrate port of the filter cartridge 92 via an activated carbon filter 96 likewise arranged in the filter cartridge 92. From there .
  • a clean water line 98 leads to a pure water outlet 100 as an external connection of the water treatment device 20.
  • the retentate port which communicates with the interior of the ultrafiltration filter 94, leads downstream to one Solenoid valve 102 which is closed during normal operation of the water treatment device 20. By opening the solenoid valve 102, the ultrafiltration filter 94 can then be flushed on the side of the reaction.
  • the water treatment device 20 comprises a chemical supply line 104 for the optional introduction of chemicals, such as H 2 O 2, which flows into the clean water line 98 leading to the pure water outlet 100 downstream of the water. Filter cartridge 92 opens.
  • a normally closed magnetic valve 106 is provided in the course of the chemical supply line 104, with which the chemical can be metered. The dosage can be done via a pulse length modulation or with the help of a proportional valve.
  • the optional introduction of chemicals can be used, for example, to the subsequent dental treatment unit 10 from time to time . redevelop.
  • the water treatment device 20 is so compact that it can be completely integrated into the treatment column 14 of the dental treatment unit 10. Nevertheless, in normal operation, a volume flow of 0.5 liters of pure water per minute at a pressure of about 3-6 bar can be provided at the pure water outlet 100, since the piston pressure pumps 64 generate sufficient pressure to pass the water through the ultrafiltration filter 9 for treatment to press.

Landscapes

  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un dispositif de traitement de l'eau (20) pour une unité de traitement dentaire (10) avec un orifice de sortie d'eau pure (100). Pour permettre une désinfection de l'eau suffisante sensiblement sans utiliser de produits chimiques, le dispositif de traitement de l'eau (10) comprend une hauteur de chute libre (50) pour l'eau passant par un réservoir d'eau (49), qui empêche une recontamination dans un système d'amenée située en amont. De plus, le dispositif de traitement de l'eau (10) comprend au moins une pompe à pression (64) qui est reliée au réservoir d'eau (49) et qui amène l'eau du réservoir d'eau (49) sous pression à un filtre d'ultrafiltration (94) disposé en aval de la pompe à pression (64) et en amont de l'orifice de sortie d'eau pure (100).
PCT/EP2015/001760 2014-09-01 2015-08-31 Dispositif de traitement de l'eau pour une unité de traitement dentaire WO2016034279A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014012690.0A DE102014012690A1 (de) 2014-09-01 2014-09-01 Wasseraufbereitungsvorrichtung für eine dentale Behandlungseinheit
DE102014012690.0 2014-09-01

Publications (1)

Publication Number Publication Date
WO2016034279A1 true WO2016034279A1 (fr) 2016-03-10

Family

ID=54364232

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/001760 WO2016034279A1 (fr) 2014-09-01 2015-08-31 Dispositif de traitement de l'eau pour une unité de traitement dentaire

Country Status (2)

Country Link
DE (1) DE102014012690A1 (fr)
WO (1) WO2016034279A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018202410A1 (de) 2018-02-16 2019-08-22 DKL-Chairs GmbH Wasseraufbereitungsvorrichtung und dentale Behandlungseinheit
DE102018202414A1 (de) 2018-02-16 2019-08-22 DKL-Chairs GmbH Wasseraufbereitungsvorrichtung und dentale Behandlungseinheit
DE102018129811A1 (de) 2018-11-26 2020-05-28 Dürr Dental SE Desinfektionsvorrichtung sowie Kompressorsystem, Verbindungseinrichtung und Behandlungseinrichtung mit einer solchen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006014080A1 (fr) * 2004-08-04 2006-02-09 Cha Hyoung Koo Methode et equipement pour alimentation en eau d'un reservoir d'eau a usage dentaire
US20070111157A1 (en) * 2003-10-15 2007-05-17 Arto Huotari Dental unit and method for feeding water
CN202899229U (zh) * 2012-11-29 2013-04-24 西诺德牙科设备（佛山）有限公司 一种应用于牙科设备的供水系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6656423B1 (en) * 2000-02-07 2003-12-02 Steris Inc. Sterile water generator
DE102010044733B4 (de) * 2010-09-08 2014-04-24 Axel Baltzer Wasseraufbereitungseinrichtung für medizinische Zwecke

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070111157A1 (en) * 2003-10-15 2007-05-17 Arto Huotari Dental unit and method for feeding water
WO2006014080A1 (fr) * 2004-08-04 2006-02-09 Cha Hyoung Koo Methode et equipement pour alimentation en eau d'un reservoir d'eau a usage dentaire
CN202899229U (zh) * 2012-11-29 2013-04-24 西诺德牙科设备（佛山）有限公司 一种应用于牙科设备的供水系统

Also Published As

Publication number Publication date
DE102014012690A1 (de) 2016-03-03

Similar Documents

Publication Publication Date Title
EP2865651B1 (fr) Installation ro (osmose inversée)
EP2723413B1 (fr) Système destiné à aspirer des fluides hors d'un corps par un effet de dépression
WO2008028723A1 (fr) Systeme de dosage d'ozone ou d'un melange ozone/oxygene
WO2014000726A2 (fr) Dispositif et procédé pour le transport commandé d'au moins un milieu
EP1311203B1 (fr) Dispositif destine a l'introduction de liquide de traitement dans des appareils medicaux
WO2016034279A1 (fr) Dispositif de traitement de l'eau pour une unité de traitement dentaire
DE602004009343T2 (de) Dosiersystem zur dosierung eines flüssigzusatzes in eine druckwasserleitung
EP2718234B1 (fr) Installation mobile de traitement de l'eau et procédé pour la production d'eau potable dans une zone sinistrée
EP0929320B1 (fr) Dispositif de dosage pour delivrer un agent germicide ou desinfectant dans un dispositif d'alimentation alimente en eau et son utilisation
DE102014105532B4 (de) Wasserauslaufarmatur mit Filter, Anschlussstück zum Anschließen an eine Wasserauslaufarmatur und Verfahren zum Betrieb einer Wasserauslaufarmatur
CH698160B1 (de) Einrichtung zur Erzeugung eines Flüssigkeitsstrahles zum Reinigen bzw. Dekontaminieren von Wunden oder infizierten Körperstellen.
WO2018133896A1 (fr) Procédé et dispositif de désinfection pour la désinfection de circuits de circulation de liquide dans un appareil, en particulier pour des circuits de circulation d'eau dans un appareil d'hypothermie
DE3032475C2 (de) Vorrichtung zur kontinuierlichen Bereitstellung einer entkeimten Spül- und/oder Kühlflüssigkeit für zahnärztliche oder chirurgische Behandlungsgeräte
WO2019242916A1 (fr) Système de filtration pour processus biopharmaceutiques
DE202014003627U1 (de) Rückverkeimungs-Schutz-System für Osmose-Anlagen
DE19926159A1 (de) Mini-Elektrolysezelle
CH690311A5 (de) Dosiergerät für Desinfektionsmittel.
EP3378499B1 (fr) Dispositif et procédé de distribution d'agents de désinfection et/ou de nettoyage
EP0695150B1 (fr) Dispositif permettant d'alimenter au moins un consommateur en eau fraiche
DE19908997C1 (de) Einrichtung zur Einspeisung von Behandlungsflüssigkeit in medizinische Geräte
EP3260190A1 (fr) Procede destine au nettoyage de filtres a membrane
AT47U1 (de) Einrichtung an einer zahnaerztlichen absauganlage
CH693415A5 (de) Anlage zur Wasseraufbereitung und Trinkwasserherstellung.
AT409079B (de) Dosiervorrichtung zur zugabe von desinfektionsmittel
DE2041701C3 (de) Vorrichtung zum Reinigen von Wasser

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15787450

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15787450

Country of ref document: EP

Kind code of ref document: A1