EP4005460A1 - Dispositif et procédé de nettoyage des ustensiles de soin - Google Patents

Dispositif et procédé de nettoyage des ustensiles de soin Download PDF

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Publication number
EP4005460A1
EP4005460A1 EP20210050.9A EP20210050A EP4005460A1 EP 4005460 A1 EP4005460 A1 EP 4005460A1 EP 20210050 A EP20210050 A EP 20210050A EP 4005460 A1 EP4005460 A1 EP 4005460A1
Authority
EP
European Patent Office
Prior art keywords
foam
cleaning
washing chamber
items
generating
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.)
Granted
Application number
EP20210050.9A
Other languages
German (de)
English (en)
Other versions
EP4005460C0 (fr
EP4005460B1 (fr
Inventor
Leonhard Lischka
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.)
Lischka GmbH
Original Assignee
Lischka GmbH
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Filing date
Publication date
Application filed by Lischka GmbH filed Critical Lischka GmbH
Priority to EP20210050.9A priority Critical patent/EP4005460B1/fr
Publication of EP4005460A1 publication Critical patent/EP4005460A1/fr
Application granted granted Critical
Publication of EP4005460C0 publication Critical patent/EP4005460C0/fr
Publication of EP4005460B1 publication Critical patent/EP4005460B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G9/00—Bed-pans, urinals or other sanitary devices for bed-ridden persons; Cleaning devices therefor, e.g. combined with toilet-urinals
    • A61G9/02—Cleaning devices
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
    • 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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants

Definitions

  • the present invention relates to a device, a kit and a method for cleaning and thermally disinfecting items to be cleaned, in particular care dishes.
  • the cleaning disinfection devices for the items to be cleaned such as care dishes, bedpans, bedpans, sliders, other items to be washed in the form of vessels or glassware must meet certain requirements and test methods in accordance with EN ISO 15883-3. So must u. the program control must be automatic and there must be sensors to regulate and monitor the disinfection. Furthermore, process chemicals have to be dosed automatically and this process has to be controlled automatically.
  • the object of the present invention is therefore to provide a method, a device and a kit to enable foam cleaning for the care utensils.
  • the cleaning and disinfection device also has a device for generating a cleaning foam. Furthermore, the device has a device for distributing the cleaning foam in the interior of the device. The foam distribution is directed on the one hand to the surfaces of the care utensils or the items to be cleaned, but on the other hand also to the inside of the cleaning and disinfection device.
  • the devices for foam distribution can be separate and/or additional devices. According to the invention, however, it is also provided to use a combination of these distribution devices.
  • a kit is made available which configures the cleaning and disinfection device in such a way that the method for foam distribution on the surfaces of the items to be cleaned can be carried out.
  • the subject matter of the present invention is a cleaning device for cleaning and thermal disinfection of items to be washed, comprising a washing chamber for receiving items to be cleaned, the washing chamber being provided with a siphon bend for the outlet, characterized in that the device also has at least one device for generating a cleaning foam, comprises at least one device for distributing the cleaning foam in the interior of the washing chamber or a combination of the devices for generating and distributing the cleaning foam.
  • a cleaning device according to the invention is particularly preferred, wherein the at least one device for generating and/or distributing the cleaning foam is selected from at least one foam spray nozzle or at least one foam lance.
  • a cleaning device is also particularly preferred, wherein the at least one device for generating and/or distributing the cleaning foam has at least one container for providing a foam-forming agent, wherein the foam is formed by means of a foamer, which preferably comprises a sieve device, a spongy structure made of metals and/or plastics, a mesh made of metals and/or plastics or a similar device for generating foam.
  • a foamer which preferably comprises a sieve device, a spongy structure made of metals and/or plastics, a mesh made of metals and/or plastics or a similar device for generating foam.
  • the foam spray nozzle or foam lance is arranged inside the washing chamber in such a way that the cleaning foam can be applied directly to the items to be washed.
  • the foam spray nozzle or foam lance is arranged and/or aligned inside the washing chamber in such a way that the cleaning foam can be applied directly to the inner walls of the washing chamber.
  • a cleaning device wherein the device for distributing the cleaning foam is designed in such a way that, instead of the cleaning foam, another cleaning agent can be applied to the items to be cleaned and/or the inner walls of the washing chamber.
  • Also preferred according to the invention is a cleaning device, wherein a further device for introducing air or other gases into the foam-forming agent is provided for foam generation.
  • the device for introducing air or other gases is a Venturi nozzle, an air or gas pressure piston, a compressor, an air generator, an air or gas supply opening in the feed area of the foam-forming agent or a combination of the devices mentioned .
  • a process in which mixed water is used in the at least one first rinsing step c) is particularly preferred according to the invention.
  • Also particularly preferred according to the invention is a method in which the cleaning foam is applied during the pre-rinsing step b) and/or during the first rinsing step c) and/or during the intensive cleaning step d).
  • a method is very particularly preferred in which the cleaning foam is applied several times during steps b), c) or d), with an optional rinsing step being carried out with mixed or pure water in order to remove the cleaning foam from the items to be cleaned.
  • Also preferred according to the invention is a method in which the foam cleaning step g) is carried out after the pre-rinsing step b) and/or after the first rinsing step c) and/or after the intensive cleaning step d).
  • the foam cleaning step g) is carried out at a temperature between 20° C. and 60° C.; preferably at a temperature of from 30°C to 40°C; most preferably at a temperature of from 32°C to 37°C.
  • a method is also particularly preferred in which the foam cleaning step g) is carried out for 0.25 min to 10 min; preferably 3 minutes to 8 minutes; more preferably 4 minutes to 5 minutes.
  • Also preferred according to the invention is a method in which the foam cleaning step g) is carried out in such a way as to clean the insides of the washing chamber of the cleaning device. It is particularly preferred that the foam cleaning step g) is carried out before step b) or after step f) of the method in order to clean the insides of the washing chamber.
  • Another subject of the present invention is a kit for converting a cleaning device containing components for installation in cleaning devices, the components being selected from foam nozzles, foam lances, foamers, non-return valves, 3-way valves, water pumps, liquid hoses, gas supply devices, liquid supply devices, detergent containers and fasteners.
  • the kit according to the invention can also be installed in corresponding cleaning devices. This makes it possible to additionally enable the application of foam in cleaning devices that are already in use. For this purpose, only holes are made in the walls of the washing chamber in order to attach the foam nozzles or foam lances. The remaining components are then installed in the housing of the cleaning device for generating and distributing the cleaning foam and connected to existing components.
  • the following cleaning steps are generally carried out, viz Pre-rinse the items to be cleaned with cold water Pre-clean with mixed water, if necessary with a water temperature of approx. 35 °C Intensive cleaning with mixed water, if necessary with the addition of a water conditioner and, if necessary, a cleaning agent
  • Thermal disinfection with steam and/or chemical disinfection cooling and dehumidification According to the present invention, further purification steps are added to the processes known per se. According to the invention, a cleaning foam is applied to the items to be washed before the step of thermal disinfection with steam and/or chemical disinfection.
  • the foam generating device serves to foam a cleaning agent, the foaming being brought about by the addition of air or other gases.
  • Foam generating devices are known in the prior art. These are in particular foam distribution devices, foamers which have a sieve-like component, a spongy structure made of metals and/or plastics, a mesh made of metals and/or plastics or a similar device for generating foam, devices for enriching the foam-generating agent with air or other gases, Liquid lines and reservoirs for foam-generating agents and the like.
  • the one in the Figures 1 to 3 Devices shown show various embodiments of the present invention.
  • This is a cleaning device for cleaning and thermal disinfection of items to be washed.
  • the in the Figures 1 to 3 The features shown relate exclusively to the device according to the invention for generating a cleaning foam.
  • the features that are known for such cleaning devices in the prior art are not shown and are used, for example, to meet the hygienic requirements for cleaning and disinfecting the items to be washed.
  • the in the Figures 1 to 3 The devices shown for generating and applying a cleaning foam essentially comprise the actual washing chamber 1, with the items to be washed 2 placed therein.
  • the washing chamber 1 is closed by a door and has a drain in the floor area, which is preferably designed like a siphon (not shown).
  • Foam nozzles 3, 4 are arranged on the side walls of the washing chamber 1, which are preferably aimed directly at the items to be washed and which are fluidically connected to a foamer 7 by means of the foam lines 5, 6.
  • the one in the figure 1 The device shown now describes that the foamer 7 is still fluidly connected to the water tank 9 and the detergent container 8 .
  • Cleaning agent container 8 is fluidically connected to canister 23 in order to introduce the cleaning agent held in canister 23 into container 8 .
  • Cleaning agent container 8 is also fluidically connected to a pressure supply system via pneumatic hose 20 .
  • Detergent container 8 is also designed to be pressure-resistant.
  • the foam cleaning process according to the invention is carried out as follows.
  • the cleaning process is carried out using a linear drive motor (LAM) 18 .
  • the LAM is connected to the piston 16 of the cylinder 17 by a clutch 19 .
  • the piston 16 is set in motion by driving the LAM.
  • the air is compressed in the cylinder 17 and fed through the pneumatic hose 20 into the cleaning agent container 8 .
  • the overpressure is created in the container and as a result the cleaning agent is fed further into the system through the liquid hose 14 .
  • a small air supply opening 15, which is necessary for foam formation, is provided on the liquid hose (in the tank) above the detergent level.
  • the resulting overpressure in the container not only pushes the cleaning agent into the liquid hose, but also the air through the air supply opening 15.
  • the air and the cleaning agent are mixed with one another in the pipe.
  • This mixture is fed to the frother 7 via the liquid hose 14 .
  • a very fine screen is arranged through which the cleaning air mixture is pressed with the generated pressure. This breaks up the air bubbles in the cleaning agent very finely, creating the cleaning foam.
  • the foam is further directed through the foam line 5 to the upper foam nozzle 3 and through the foam line 6 to the lower foam nozzle 4.
  • the foam in the wash chamber 1 is distributed over the items to be washed 2 via the foam nozzles. It is clear that further foam nozzles can be arranged in the washing chamber. These are then also fed with the cleaning foam via foam lines.
  • the system should be rinsed with clear water either after each wash cycle or after a certain period of time.
  • water is fed from the water tank 9 of the dishwasher with the aid of the liquid pump 11 into the rinsing water line 13 and the foam lines 5, 6, the frother 7 and the nozzles 3, 4 are thus rinsed.
  • the self-closing non-return valve 12 serves to ensure that the cleaning agent does not get into the water tank during operation of the foam generation system.
  • the self-closing non-return valve 10 ensures that the water does not get into the detergent container 8 during the rinsing process.
  • the return travel of the piston 16 is used to refill the detergent container 8 . Since a negative pressure is created in the cylinder 17 when the piston 16 moves back, a suction effect acts in the container 8 and in the canister 23. The container 8 is refilled through the canister 23 as a result of this negative pressure.
  • the self-closing non-return valve 22 serves to ensure that the overpressure can arise in the cleaning agent container 8 during operation of the foam generation system, ie the air is not directed into the canister 23 .
  • the one in the figure 2 The device shown now describes that the foamer 7 is still fluidly connected to the water tank 9 and the canister 23, which contains the cleaning agent. This fluidic connection takes place via a 3-way solenoid changeover valve 25. The corresponding fluids are then transferred to the frother 7 by means of the liquid pump 11.
  • the foam cleaning process according to the invention is carried out as follows.
  • the cleaning process is carried out by means of the liquid pump 11 and a 3-way solenoid changeover valve 25.
  • the 3-way solenoid switching valve 25 is used to switch between the circuits: detergent (item 1) and water (item 2).
  • position 1 of the switchover valve 25 with the liquid pump 11 driven, a negative pressure is generated in the liquid hose 24 and the cleaning agent is thus sucked out of the canister 23 into the foam generation system, in particular into the frother 7.
  • the negative pressure created in the liquid hose 24 not only pulls the cleaning agent into the liquid hose 24, but also the air through the air supply opening 15.
  • the air and the cleaning agent are mixed with one another. This mixture is sent to the frother 7.
  • a very fine sieve is arranged in the frother 7, through which the cleaning air mixture is pressed with the generated pressure. This breaks up the air bubbles in the cleaning agent very finely, creating the cleaning foam.
  • the foam is further directed through the foam line 5 to the upper foam nozzle 3 and through the foam line 6 to the lower foam nozzle 4.
  • the foam in the washing chamber 1 is distributed over the items to be washed 2 via the foam nozzles. It is clear that further foam nozzles can be arranged in the wash chamber. These are then also fed with the cleaning foam via foam lines.
  • the system should be rinsed with clear water either after each wash cycle or after a certain period of time.
  • water is fed from the water tank 9 of the dishwasher with the aid of the liquid pump 11 and the position of the 3-way solenoid changeover valve 25 into the rinsing water line 13 and the liquid pump 11, foam lines 5, 6, frother 7 and nozzles 3, 4 are thus flushed.
  • frother 7 is still fluidly connected to water tank 9 and canister 23, which Contains detergent is connected.
  • This fluidic connection takes place via a Venturi nozzle 27 which is connected to a water line 30 via a water pressure regulator 28 and a check valve 29 .
  • the corresponding fluids are then transferred to the frother 7 by means of the Venturi nozzle 27 .
  • a detergent flow adjustment valve 26 is used to adjust the dosage of the detergent.
  • the foam cleaning process according to the invention is carried out as follows.
  • the cleaning process works according to the Venturi principle.
  • the water flows through a piece of pipe 27 with a narrowing of the cross section (Venturi nozzle). This constriction creates a negative pressure (Venturi effect) in the connected liquid hose 24 and as a result the cleaning agent is sucked out of the canister 23 via the liquid hose 24 into the Venturi nozzle 27 .
  • the water for the foam generation is provided from the water line 30 .
  • a non-return valve 29 is used to regulate the water pressure.
  • a water pressure regulator 28 is installed in the water line.
  • the system should be flushed with clear water either after each wash cycle or after a certain period of time.
  • water is fed from the water tank 9 of the dishwasher with the aid of the liquid pump 11 into the rinsing water line 13 and the foam lines 5, 6, the frother 7 and the nozzles 3, 4 are thus rinsed.
  • the self-closing non-return valve 12 serves to ensure that the cleaning agent does not get into the water tank during operation of the foam generation system.
  • the self-closing non-return valve 31 ensures that the water does not get into the detergent container 23 during the rinsing process.
  • kits 1 to 3 The components described, which are also listed in the list of reference numbers, can be used for the kit according to the invention in order to design different embodiments of the foam-applying devices.
  • the kit according to the invention makes it possible to convert existing cleaning devices accordingly. This means that foam cleaning can be used cost-effectively.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP20210050.9A 2020-11-26 2020-11-26 Dispositif et procédé de nettoyage des ustensiles de soin Active EP4005460B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20210050.9A EP4005460B1 (fr) 2020-11-26 2020-11-26 Dispositif et procédé de nettoyage des ustensiles de soin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20210050.9A EP4005460B1 (fr) 2020-11-26 2020-11-26 Dispositif et procédé de nettoyage des ustensiles de soin

Publications (3)

Publication Number Publication Date
EP4005460A1 true EP4005460A1 (fr) 2022-06-01
EP4005460C0 EP4005460C0 (fr) 2024-10-16
EP4005460B1 EP4005460B1 (fr) 2024-10-16

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EP20210050.9A Active EP4005460B1 (fr) 2020-11-26 2020-11-26 Dispositif et procédé de nettoyage des ustensiles de soin

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018048A1 (de) * 1970-05-12 1981-11-12 Hans 8700 Würzburg Burmeister Anordnung zum entwickeln und abgeben von schaeumen
DE3317391C1 (de) * 1983-05-13 1984-05-24 ZK Hospital GmbH & Co KG, 4353 Oer-Erkenschwick Verfahren zum Reinigen von Steckbeckensitzflächen in Fäkalienspülgeräten sowie Fäkalienspülgerät zur Durchführung dieses Verfahrens
JPH08302796A (ja) * 1995-03-09 1996-11-19 Inax Corp 水洗便器用泡発生装置
EP0894469A1 (fr) 1997-07-31 1999-02-03 Epenhuysen Chemie N.V. Procédé pour laver mécaniquement la vaisselle
JP2002320650A (ja) * 2000-12-28 2002-11-05 Kokyu Shashin Kogyo Co Ltd 自力真空水洗トイレ
DE102010006448A1 (de) * 2009-05-29 2011-04-28 Lischka Gmbh Verfahren zur Umluftrückkühlung von Spülgut im Reinigungs- und Desinfektionsgerät für menschliche Ausscheidungen
US20190075998A1 (en) * 2016-05-06 2019-03-14 Rp Ideas Pty Ltd Heavy duty washing apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3018048A1 (de) * 1970-05-12 1981-11-12 Hans 8700 Würzburg Burmeister Anordnung zum entwickeln und abgeben von schaeumen
DE3317391C1 (de) * 1983-05-13 1984-05-24 ZK Hospital GmbH & Co KG, 4353 Oer-Erkenschwick Verfahren zum Reinigen von Steckbeckensitzflächen in Fäkalienspülgeräten sowie Fäkalienspülgerät zur Durchführung dieses Verfahrens
JPH08302796A (ja) * 1995-03-09 1996-11-19 Inax Corp 水洗便器用泡発生装置
EP0894469A1 (fr) 1997-07-31 1999-02-03 Epenhuysen Chemie N.V. Procédé pour laver mécaniquement la vaisselle
JP2002320650A (ja) * 2000-12-28 2002-11-05 Kokyu Shashin Kogyo Co Ltd 自力真空水洗トイレ
DE102010006448A1 (de) * 2009-05-29 2011-04-28 Lischka Gmbh Verfahren zur Umluftrückkühlung von Spülgut im Reinigungs- und Desinfektionsgerät für menschliche Ausscheidungen
US20190075998A1 (en) * 2016-05-06 2019-03-14 Rp Ideas Pty Ltd Heavy duty washing apparatus

Also Published As

Publication number Publication date
EP4005460C0 (fr) 2024-10-16
EP4005460B1 (fr) 2024-10-16

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