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WO1986006612A1 - Dispositif pour le degazage de l'eau desinfectee dans une installation de desinfection d'un cabinet de dentiste - Google Patents

Dispositif pour le degazage de l'eau desinfectee dans une installation de desinfection d'un cabinet de dentiste Download PDF

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Publication number
WO1986006612A1
WO1986006612A1 PCT/DE1986/000172 DE8600172W WO8606612A1 WO 1986006612 A1 WO1986006612 A1 WO 1986006612A1 DE 8600172 W DE8600172 W DE 8600172W WO 8606612 A1 WO8606612 A1 WO 8606612A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
lines
line
valves
containers
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE1986/000172
Other languages
German (de)
English (en)
Inventor
Konstantin Ledjeff
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of WO1986006612A1 publication Critical patent/WO1986006612A1/fr
Priority to DK008587A priority Critical patent/DK8587D0/da
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0068—General arrangements, e.g. flowsheets
    • 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
    • A61C1/0007—Control devices or systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases

Definitions

  • the invention relates to a device for degassing the water disinfected in a water sterilization system of a dental treatment device for the dental treatment instruments and the other water consumers assigned to a dental patient chair.
  • patient chairs with a preferably built-in water disinfection system are used for dental treatment, which supplies germ-free water for a number of instruments, such as turbine instruments, handpieces, contra-angle handpieces and surgical instruments.
  • instruments such as turbine instruments, handpieces, contra-angle handpieces and surgical instruments.
  • the usual dental equipment requires water for a fountain system and a syringe for water.
  • Disinfection methods using chemical or electrical means are known for disinfecting the tap water that is normally used.
  • DE-OS 23 11 504 discloses a device in which water is disinfected in an anodic oxidation chamber.
  • the gases generated in such disinfection systems are undesirable because, on the one hand, they lead to disruptions and impairments in the dental workflow, in particular in the coolant system of a dental device, and, on the other hand, they contain dangerous gases, such as detonating gas.
  • the cathode of the anodic oxidation chamber in the device known from DE-OS 23 11 504 is surrounded by a diaphragm made of a porous ceramic material, the diaphragm being filled with concentrated alkali metal chloride solution.
  • the invention has for its object to provide a device for degassing, which allows the gas which leaves the water disinfection system of a dental treatment device and contains dissolved gas components to be degassed in a simple manner, regardless of the type of gas, without the outlet side - to change the operating pressure.
  • the water disinfection system is connected via a supply line and a first controllable valve arrangement to the inlet lines of at least two closed containers, which via outlet lines and via a second valve arrangement to a consumer line leading to the water consumers and are connected to a vacuum generator via suction lines opening into the container and that the valves can be actuated by a control circuit so that the containers are alternately connected to the vacuum generator or to the supply line and the consumer line.
  • the device permits vacuum degassing, the operating pressure being built up again after switching over by flowing water in the respective container. While vacuum degassing takes place in one container, the water degassed in a previous cycle of the other container is switched to the consumer line, the volume of the sterilized and degassed water flowing off being followed by sterilized and not yet flowing degassed water is filled. The degassed mixes with the non-degassed water, whereby the degree of degassing that was originally achieved deteriorates again in part, but this deterioration is limited and can be adapted to the respective requirements by selecting the cycle times, the volume ratios and water throughputs.
  • the valve arrangements can consist of simple electromagnetically controllable shut-off valves or of 3/2-way valves.
  • the input lines and the suction lines of each of the two containers are realized by common lines which are connected to the always effective main connection of 3/2-way valves, the alternatingly effective changeover connections of the supply line and a common vacuum line are connected in opposite directions so that the first suction line connected to the vacuum line is connected to the idle changeover connection of one valve and the second suction line connected to the vacuum line is connected to the changeover connection of the other valve, which is effective in the electromagnetic excitation of the valve .
  • the supply line is divided over two feed lines, which create a connection to the containers in alternative states of the valve control.
  • FIG. 2 shows a device according to the invention with 3/2-way valves in a representation corresponding to FIG. 1,
  • FIG. 3 shows the block diagram of a device according to the invention with 3/2-way valves and containers in which the water supply and the
  • Fig. 4 is a block diagram illustrating the
  • FIG. 6 shows an arrangement essentially corresponding to FIG. 4, in which a catalyst is switched on between the liquid separator and the vacuum generator,
  • FIG. 7 shows an arrangement essentially corresponding to FIG. 5, in which a catalyst is connected downstream of the liquid separator according to the embodiment according to FIG. 6 and 8 shows a schematic illustration of an arrangement in which the water leaving the water disinfection system is divided into two partial streams, the first of which degasses in a degassing device according to the invention and the second degasses in a differently effective degassing tank becomes.
  • FIG. 1 A first exemplary embodiment of a degassing device that can be connected to a water decontamination system is shown schematically in FIG. 1.
  • the gas-laden, pressurized liquid coming from the water sterilization system flows into the degassing device via a feed line 1 and is first divided into a first feed line 2 and a second feed line 3.
  • These are connected to containers 8, 9 via a first electromagnetic shut-off valve 4 and a second electromagnetic shut-off valve 5 and via a first inlet line 6 and a second inlet line 7.
  • the containers 8, 9 are vacuum-sealed, closed, pressure-resistant containers, the volume of which is, for example, 250 cm 3 .
  • the water entering the containers 8, 9 can leave them via a first outlet line 10 and a second outlet line 11 when the respectively assigned first outlet valve 12 or second outlet valve 13 is open.
  • a first suction line 14 and a second suction line 15 each of which has a first vacuum valve 16 and a second vacuum valve 17 as well as a first vacuum line 18 and one second vacuum line 19 are connected to a vacuum generator (not shown in FIG. 1), for example a diaphragm pump, a water jet pump or the like.
  • a vacuum generator for example a diaphragm pump, a water jet pump or the like.
  • all geometries with a clearly highest point are favorable, such as, for example, conical or pyramid-shaped container lids, crooked cylinders, rotated cubes, etc.
  • the liquid supply via the inlet lines 6, 7 is conveniently located in the upper half of the container during the drain via the output lines 10, 11 in the lower half. These are particularly favorable arrangements, but can be deviated from.
  • the second vacuum valve 17 is closed, while the water can leave the container 9 through the opened second outlet valve 13.
  • the outlet of the second outlet valve 13 is connected via a branch line 21 to a consumer line 22, which leads the degassed water to the consumers of the dental device.
  • the water leaving the container 9 is replaced by water which flows in via the supply line 1, the second feed line 3, the second shut-off valve 5 and the second inlet line 7. In this case, the water which has not yet been degassed and which flows in mixes with the water which is already in the container 9 and which has already been degassed.
  • either the first suction line 14 or the second suction line 15 is connected to a common vacuum line 26, which is connected to the vacuum generator (also not shown in FIG. 2).
  • An outlet-side 3/2-way valve 25 likewise replaces two shut-off valves according to FIG. 1 and permits switching between the first outlet line 10 and the second outlet line 11 to the consumer line 22. The operation takes place in such a way that all valves 23, 24, 25 switch simultaneously.
  • FIG. 3 A preferred embodiment of the invention is shown in FIG. 3.
  • the feed line 1 is connected to a first 3/2-way valve 28 via the first feed line 2 and to a second 3/2-way valve 29 via a second feed line 3.
  • the two 3/2-way valves 28, 29 are further connected via a first suction line 30 and a second suction line 31 and a common vacuum line 26 to the vacuum generator, which is also not shown in FIG. 3.
  • the 3/2-way valves 28, 29 are also with the containers 8 and 9 via a first common line 32 and a second common line 33 in connection.
  • the arrangement is such that switching the first 3/2-way valve 28 allows the container 8 to be optionally connected to the supply line 1 or the common vacuum line 26.
  • switching the second 3/2-way valve 29 allows the container 9 to be connected to the supply line 1 or the common vacuum line 26.
  • the 3/2-way valves 23 and 24 of the arrangement shown in FIG. 2 instead of a switchover between water and vacuum, there was a switchover between the first container 8 and the second container 9.
  • Switching between the two containers 8 and 9 is, however, achieved by the third 3/2-way valve 36 connected to the first output line 34 and the second output line 35, the output of which is connected to the consumer line 22.
  • this problem can be solved by switching the first 3/2-way valve 28 a short time, for example 5 seconds, before the cycle time has elapsed, and only after the cycle time has elapsed is 1 min, for example, the switching of the 3/2-way valves 29 and 36 takes place. In this way, sufficient time is available to build up a pressure in the container 8, which is then immediately present in the consumer line 22 after the cycle time has expired.
  • FIG. 4 shows an arrangement for using the degassing device provided with the reference numeral 38.
  • the water After flowing through a disinfection device 37, the water enters the degassing device 38, which is constructed in accordance with FIGS. 1 to 3.
  • the vacuum which is connected to the vacuum line 26 can be generated directly by a vacuum pump (air pump, water jet pump, membrane pump etc.) which is assigned to the degassing device 38. It is also possible to connect the vacuum line 26 to a suction line present in the dental device.
  • a liquid-gas separation is required, which can be done by inserting a liquid separator 40 between the degassing device 38 and the vacuum generator 41 shown in FIG. 4, the vacuum line 26 for the gas Liquid mixture is provided, while a liquid line 44 carries only liquid and a connecting line 42 only gas.
  • the gas leaves the vacuum generator 41 through an outlet line 43.
  • the liquid separator 40 can also only be installed at the pump outlet, as shown in FIG. 5.
  • the degassing device 38 is connected to the vacuum generator 41 via the vacuum line 26.
  • the pressure side of the vacuum generator 41 is connected via a pressure line 46 to the liquid separator 40, which removes the liquid via the liquid line 44 and the gas via the line 42.
  • the degassing device 38 according to the invention can also be used only for a partial flow of the total sterilized liquid, the remaining water flow being degassed with another device or not at all.
  • the functioning of the instruments such as the turbine instruments, the handpieces, the angle pieces or the surgical instruments, is impaired by the gases. It may therefore be advantageous to degas only the partial flow for these instruments with the degassing device 38 according to the invention.
  • the degassing of smaller partial flows is namely favorable, since larger liquid volume flows tend to make larger containers 8 and 9 necessary.
  • a catalytic converter is sufficient. It is then expedient if a catalyst 48 is introduced into the connecting line 42 already mentioned in connection with FIG. 4, which connects the liquid separator 40 to the vacuum generator 41. 6 shows such a structure.
  • the liquid separator 40 can be combined with the catalyst 48 in a single housing.
  • FIG. 7 shows how the catalytic converter 48 is arranged behind the outlet of the vacuum generator 41.
  • the liquid separator 40 is connected to the catalyst by the connecting line 42 and a catalyst outlet line 51 leads the gas freed of oxyhydrogen.
  • the amounts of ignitable gas which are removed from this partial flow can be so small that catalytic destruction in the manner described is not necessary. These small amounts can simply be sent to the Environment.
  • the partial stream that carries larger amounts of gas, which are quite critical, can then be degassed using another method. Such a combination is shown in FIG. 8.
  • the water to be sterilized is supplied to the water sterilization system 37 via a supply line 59.
  • the gas-laden water emerging from it is divided into partial strands via a main feed line 57 and continues to flow via feed lines 1 and 52.
  • the degassing device 38 according to FIGS. 1 to 7 degasses the partial flow which is fed in via the feed line 1, the degassed water passing through the consumer line 22 to the consumers, such as the spray handpiece, the coolant system or the tartar removal device.
  • the partial flow in the feed line 52 leads to a degassing tank 55 which works according to a different principle and which supplies the water degassed by it to the consumers via an additional line 61, e.g. the fountain system or the drain.
  • a degassing tank 55 which works according to a different principle and which supplies the water degassed by it to the consumers via an additional line 61, e.g. the fountain system or the drain.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dentistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Epidemiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Degasification And Air Bubble Elimination (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'installation de désinfection d'eau d'une dispositif pour le dégazage de l'eau désinfectée d'une installation de désinfection d'un cabinet de dentiste pour l'ensemble des instruments et les autres utilisations d'eau, agencée au fauteuil du patient, est reliée par une conduite d'amenée (1) et par des soupapes (28, 29) avec les conduites d'entrée (32, 33) de deux réservoirs fermés (8, 9). Les réservoirs (8, 9) sont raccordés par des conduites d'évacuation (34, 35) et par une soupape (36) à une conduite d'alimentation (22) amenant à l'utilisateur. Dans l'une des deux positions des soupapes (28, 29), les conduits d'entrée (32, 33) ont la fonction de conduite d'aspiration, raccordée par une conduite (26) à un appareil à faire le vide. Les soupapes (28, 29) sont actionnées de manière que les réservoirs (8, 9) soient alternativement en liaison avec l'appareil à vide ou avec la conduite d'amenée (1) et la conduite d'alimentation (22). Pendant que dans un des réservoirs (8, 9) a lieu un dégazage, l'autre réservoir (8, 9) se vide de l'eau dégazée et se remplit avec de l'eau arrivant par la conduite d'amenée (1).
PCT/DE1986/000172 1985-05-09 1986-04-23 Dispositif pour le degazage de l'eau desinfectee dans une installation de desinfection d'un cabinet de dentiste Ceased WO1986006612A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK008587A DK8587D0 (da) 1985-05-09 1987-01-08 Apparat til afgasning af det i et tandklinisk behandlingsapparaturs vandsteriliseringsapparat steriliserede vand

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853516618 DE3516618C1 (de) 1985-05-09 1985-05-09 Vorrichtung zum Entgasen des in einer Wasserentkeimungsanlage eines zahnaertzlichen Behandlungsgeraetes entkeimten Wassers
DEP3516618.5 1985-05-09

Publications (1)

Publication Number Publication Date
WO1986006612A1 true WO1986006612A1 (fr) 1986-11-20

Family

ID=6270196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1986/000172 Ceased WO1986006612A1 (fr) 1985-05-09 1986-04-23 Dispositif pour le degazage de l'eau desinfectee dans une installation de desinfection d'un cabinet de dentiste

Country Status (5)

Country Link
EP (1) EP0221094A1 (fr)
JP (1) JPS62502810A (fr)
DE (1) DE3516618C1 (fr)
DK (1) DK8587D0 (fr)
WO (1) WO1986006612A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3707071C1 (de) * 1987-03-05 1988-08-18 Riwoplan Med Tech Einricht Vorrichtung zum Entgasen von Spuelwasser

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2311504A1 (de) * 1973-03-08 1974-09-12 Bernhard Seubert Verfahren zur sterilisation von wasser und/oder waessrigen loesungen durch anodische oxidation mit gleichstrom und impulskomponente
US3949753A (en) * 1972-11-27 1976-04-13 Rolf Dockhorn Apparatus for supplying aseptic fluids
WO1979000145A1 (fr) * 1977-09-14 1979-03-22 Inst Biomedizinische Technik Procede pour la desinfection de liquides et dispositif pour la mise en oeuvre du procede
DE3333204A1 (de) * 1983-09-14 1985-03-28 Max-Josef Dr.-Ing. Zürich Schönhuber Vorrichtung zur annahme von milchlieferungen mittels eines milchsammeltransportfahrzeugs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949753A (en) * 1972-11-27 1976-04-13 Rolf Dockhorn Apparatus for supplying aseptic fluids
DE2311504A1 (de) * 1973-03-08 1974-09-12 Bernhard Seubert Verfahren zur sterilisation von wasser und/oder waessrigen loesungen durch anodische oxidation mit gleichstrom und impulskomponente
WO1979000145A1 (fr) * 1977-09-14 1979-03-22 Inst Biomedizinische Technik Procede pour la desinfection de liquides et dispositif pour la mise en oeuvre du procede
DE3333204A1 (de) * 1983-09-14 1985-03-28 Max-Josef Dr.-Ing. Zürich Schönhuber Vorrichtung zur annahme von milchlieferungen mittels eines milchsammeltransportfahrzeugs

Also Published As

Publication number Publication date
DE3516618C1 (de) 1986-09-18
DK8587A (da) 1987-01-08
EP0221094A1 (fr) 1987-05-13
DK8587D0 (da) 1987-01-08
JPS62502810A (ja) 1987-11-12

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