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EP3742952B1 - Système de lavage destiné au nettoyage d'un produit à nettoyer - Google Patents

Système de lavage destiné au nettoyage d'un produit à nettoyer Download PDF

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Publication number
EP3742952B1
EP3742952B1 EP19702831.9A EP19702831A EP3742952B1 EP 3742952 B1 EP3742952 B1 EP 3742952B1 EP 19702831 A EP19702831 A EP 19702831A EP 3742952 B1 EP3742952 B1 EP 3742952B1
Authority
EP
European Patent Office
Prior art keywords
closure element
cleaning
opening
housing
washing system
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.)
Active
Application number
EP19702831.9A
Other languages
German (de)
English (en)
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EP3742952A1 (fr
Inventor
Stanislav ANSELM
Denis Lehmann
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.)
Meiko Maschinenbau GmbH and Co KG
Original Assignee
Meiko Maschinenbau GmbH and Co KG
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 Meiko Maschinenbau GmbH and Co KG filed Critical Meiko Maschinenbau GmbH and Co KG
Publication of EP3742952A1 publication Critical patent/EP3742952A1/fr
Application granted granted Critical
Publication of EP3742952B1 publication Critical patent/EP3742952B1/fr
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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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/14—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/18—Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with movably-mounted spraying devices
    • A47L15/22—Rotary spraying devices
    • A47L15/23—Rotary spraying devices moved by means of the sprays

Definitions

  • the invention relates to a washing system for cleaning items to be cleaned, in particular for use in a cleaning device, and also to a cleaning device comprising the washing system.
  • the washing system can be used in particular as a washing arm, for example as a rotatable, fixed or pivoting washing arm, for example as a nozzle arm.
  • the invention also relates to a method for maintaining the washing system.
  • the devices and methods according to the present invention can be used in particular in commercial dishwashing technology and/or in large kitchens. For example, devices and methods of the type mentioned can be used in communal catering facilities, such as in particular in restaurants, company canteens, canteens in schools, authorities, hospitals or care facilities.
  • the cleaning device can be used in particular for cleaning items to be cleaned in the form of items to be washed, which are used directly or indirectly for preparing, storing or serving food and drinks. In particular, these can be dishes and/or trays. Other areas of application of the present invention are also conceivable in principle, in particular areas of application with basically any items to be washed, for example medical devices or care utensils.
  • a large number of cleaning devices also referred to as cleaning appliances, are known from the prior art, which can clean and/or disinfect items to be cleaned.
  • the invention refers in the following, without restricting other possible areas of application, primarily to commercial dishwashing technology, for example commercial dishwashing technology.
  • conveyor dishwashers or conveyor dishwashers are also known, in which in which the items to be cleaned are transported through one or more cleaning chambers by means of a transport device.
  • Program dishwashers also known as program machines, which are designed for commercial use, usually have two circuits for rinsing liquid, i.e.
  • rinsing tank for the separate preparation of rinsing fluid or clear rinsing fluid, for example with a boiler or continuous flow heater.
  • rinsing tank for the separate preparation of rinsing fluid or clear rinsing fluid, for example with a boiler or continuous flow heater.
  • Other designs are also possible.
  • washing systems such as washing arms are used in particular, which are generally part of a loading device for applying cleaning fluid, such as water or water-containing cleaning fluid, to the items to be cleaned.
  • cleaning fluid such as water or water-containing cleaning fluid
  • These washing systems can be designed, for example, as washing arms, in particular as nozzle arms.
  • a particular challenge is to maintain the operational capability of such washing systems.
  • dirt particles from the circulated cleaning fluid such as the circulated rinsing liquid
  • dishwashers are usually equipped with a filter system for the circulated rinsing liquid, this malfunction must be regularly monitored and remedied as part of maintenance procedures.
  • the dirt particles impair the spray pattern of the nozzle or the nozzle becomes completely blocked.
  • Such blockages usually have to be removed to ensure that the dishwasher cleans properly.
  • the washing arm is therefore often removed from the cleaning device. The contamination can then be removed from the nozzle opening using a thin object, such as a wire.
  • this particle then falls into the interior of the washing arm.
  • this washing arm is then filled with water via its inlet opening, for example from a tap, and an attempt is made to rinse out the dirt particles by emptying the arm via the inlet opening.
  • the washing arm can also be dismantled and cleaned.
  • washing arms are also known from the prior art, which have a further opening in addition to the inlet opening, which is also referred to as a cleaning opening.
  • This cleaning opening can be closed, for example, by a screw cap, by a rubber stopper or similar closures, which can be secured against loss, for example by clips or in some other way.
  • LU 92 894 B1 discloses a spray device of a dishwasher with a structure for cleaning the spray nozzles.
  • a resealable opening is formed in the wall of the spray device, which is closed with a cover that is removable or attached to a spray arm. The dirt, fibrous and grainy food residues are easily rinsed out of the spray device through the opening.
  • a dishwasher which is designed as a programmer with a treatment chamber or as a conveyor dishwasher with at least one treatment zone and has a washing system assigned to the treatment chamber or the at least one treatment zone.
  • the washing system has a washing tank for holding washing liquid, a multiplicity of spray nozzles formed in at least one washing pipe for spraying washing liquid onto the items to be cleaned, and a washing pump connected to the at least one washing pipe via a line system for supplying washing liquid from the washing tank to the spray nozzles formed in the at least one washing pipe.
  • the at least one washing pipe has a central cleaning opening which is designed such that when the dishwasher is in cleaning mode, at least part of the washing liquid supplied from the washing pump to the washing pipe flows back into the washing tank via the central cleaning opening.
  • the devices known from the state of the art have some disadvantages and technical challenges.
  • the known devices are usually designed in such a way that the cleaning openings could accidentally remain open after cleaning and the washing arm could then be put back into the dishwasher. The result would be an unsatisfactory cleaning result, which could also lead to some time would go unnoticed. Furthermore, in some cases a lock on the cleaning opening can be lost and the dishwasher would no longer function.
  • handling the known devices is comparatively complex in practice and usually requires several handling steps by trained personnel.
  • washing system and a cleaning device as well as a corresponding method for maintaining the same, which at least largely avoid the disadvantages of known devices and methods of the type mentioned.
  • a washing system would be desirable which is simple and user-friendly to operate.
  • the terms “have”, “have”, “comprise” or “include” or any grammatical variations thereof are used in a non-exclusive manner. Accordingly, these terms can refer both to situations in which, in addition to the features introduced by these terms, no further features are present, or to situations in which one or more further features are present.
  • the expression “A has B”, “A has B”, “A comprises B” or “A includes B” can refer both to the situation in which, apart from B, no further element is present in A (i.e. to a situation in which A consists exclusively of B), and to the situation in which, in addition to B, one or more further elements are present in A, for example element C, elements C and D or even further elements.
  • the terms “at least one” and “one or more” and grammatical variations of these terms when used in connection with one or more elements or features and intended to express that the element or feature can be provided once or multiple times, are generally only used once, for example when the feature or element is introduced for the first time. When the feature or element is subsequently mentioned again, the corresponding term “at least one” or “one or more” is generally no longer used, without limiting the possibility that the feature or element can be provided once or multiple times.
  • the washing system can be designed in particular for use in a cleaning device for cleaning items to be cleaned, in particular a dishwasher. Possible embodiments are described in more detail below.
  • a cleaning device for cleaning items to be cleaned comprises at least one cleaning chamber for receiving the items to be cleaned. Furthermore, the cleaning device comprises at least one application device for applying at least one cleaning fluid to the items to be cleaned.
  • the application device comprises at least one washing system according to the invention, for example according to one or more of the embodiments described in more detail below.
  • washing system is a broad term which should be given its usual and common meaning as understood by the person skilled in the art.
  • the term is not restricted to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to a device by means of which cleaning fluid, for example a cleaning liquid, can be applied to the item to be cleaned or items to be cleaned, for example by spraying, atomizing, dripping or blasting.
  • the washing system can in particular, as stated above, be part of an application device for applying the cleaning fluid to the items to be cleaned, which in addition to the at least one washing system can, for example, have one or more elements, for example selected from the group consisting of: a tank; a piping system; a pump.
  • the washing system can in particular be designed as a nozzle arm or nozzle tube, with one nozzle opening or a plurality of nozzle openings.
  • cleaning device is a broad term which should be given its usual and common meaning as understood by the person skilled in the art.
  • the term is not restricted to a specific or adapted meaning.
  • the term can, without restriction, refer in particular to a device which is designed to at least partially remove adhering contaminants and/or germs from items to be cleaned.
  • the cleaning device can be, for example, a dishwasher, in particular a commercial dishwasher, for example a single-chamber dishwasher and/or a program dishwasher.
  • the concept according to the invention can also be used in conveyor dishwashers.
  • the cleaning device can also be designed in whole or in part as a cleaning and disinfection device, for example as a cleaning device which is designed to clean containers for receiving human excreta.
  • the cleaning device can also be a dishwasher, such as can be used for cleaning containers in the field of food production and/or food processing.
  • the cleaning device can also be a disinfection dishwasher, for example a dishwasher for cleaning and disinfecting breathing masks.
  • a dishwasher for example a dishwasher for cleaning and disinfecting breathing masks.
  • other designs are also conceivable in principle.
  • cleaning item is a broad term which should be given its usual and common meaning as understood by the person skilled in the art.
  • the term is not limited to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to objects or goods which can be subjected to cleaning or a cleaning process.
  • Wash items should be any objects which are intended for the preparation, presentation or storage of food and drinks. Examples of this include crockery such as cups, plates, glasses, bowls or dishes. Also mentioned are pots, trays, cutlery, warming devices or similar devices.
  • other types of cleaning items can also be cleaned, such as industrial items, bulk goods, containers or other types of cleaning items.
  • “Cleaning” can be understood, without limitation, as the removal of adhering dirt or other contaminants from the items to be cleaned, as well as a germ-reducing and/or germicidal effect or even a disinfecting effect.
  • Hygienization is generally understood as the removal of germs, in particular a germ-reducing and/or germicidal or even disinfecting effect, as well as the removal of substances such as chemicals, for example residues of additives of the at least one cleaning fluid.
  • cleaning chamber is a broad term to which its usual and common meaning should be given, as understood by the person skilled in the art.
  • the term is not restricted to a specific or adapted meaning.
  • the term can, without restriction, refer in particular to a chamber in which the above-described cleaning process of the items to be cleaned is carried out completely or partially.
  • the cleaning fluid or one of several cleaning fluids can be applied in a cleaning chamber.
  • the chamber is preferably completely or partially enclosed by a housing.
  • the cleaning device can in particular be a single-chamber cleaning device, i.e. a cleaning device which has exactly one chamber for receiving the items to be cleaned, in particular for stationary reception, which is preferably completely surrounded by walls of the cleaning chamber.
  • a closable opening can be provided in at least one wall of the cleaning chamber, for example a flap, a door or a slide.
  • at least a part of at least one wall of the cleaning chamber can be designed to be movable in order to allow items to be cleaned to be accommodated in the cleaning chamber.
  • the cleaning chamber described can also have at least one hood or be completely or partially closed off by at least one hood.
  • the cleaning fluid can be, for example, a cleaning liquid and/or a gaseous cleaning fluid.
  • this cleaning fluid can be a cleaning liquid comprise, for example, an aqueous cleaning fluid, for example water in the form of fresh water and/or with one or more additives, for example with one or more cleaning concentrates and/or one or more rinse aid concentrates and/or one or more disinfectants.
  • the cleaning fluid can have one or more additives, for example at least one additive selected from the group consisting of a cleaning concentrate, a rinse aid and a disinfectant.
  • the cleaning fluid can comprise steam, for example.
  • other configurations are also conceivable in principle.
  • the at least one cleaning fluid can in principle comprise, for example, at least one cleaning fluid, in particular at least one aqueous cleaning fluid.
  • Other types of cleaning fluids can also be used in principle.
  • a "cleaning fluid” can thus be understood, without limiting further possible configurations, to mean any fluid, in particular a liquid, which can have a cleaning effect on the items to be cleaned.
  • the term "application device” as used here is a broad term which should be given its usual and common meaning as understood by a person skilled in the art. The term is not limited to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to any device or combination of devices by means of which the cleaning fluid can be applied to the items to be cleaned, for example by spraying, irradiating or dripping the cleaning fluid onto the items to be cleaned.
  • the application device comprises the proposed washing system.
  • the application device can have at least one washing system in the form of at least one nozzle system.
  • one or more washing systems can be provided in the cleaning chamber above and/or below the items to be cleaned and/or to the side of the items to be cleaned.
  • the washing systems can comprise one or more spray arms above the items to be cleaned and/or one or more spray arms below the items to be cleaned, in particular rotatable spray arms.
  • housing is a broad term which is to be given its ordinary and common meaning as understood by those skilled in the art. The term is not limited to any specific or adapted meaning.
  • the term may, without limitation, refer in particular to a device, element or combination of elements which encloses at least one other element and/or at least one space and which encloses it in whole or in part according to outside.
  • the housing as a whole can be a structure with mechanical stability, in particular dimensional stability.
  • the housing can be made entirely or partially from plastic and/or a metallic material such as sheet metal.
  • the housing can be designed in one piece or in multiple pieces.
  • the housing can be composed of one, two or more shells, for example shells made of plastic and/or sheet metal formed by deep drawing or blow molding.
  • the housing can also have one or more tubes.
  • the housing can be designed as an elongated housing, for example with a longitudinal extension which exceeds a lateral dimension by at least a factor of 2, preferably at least a factor of 3 or even at least a factor of 5.
  • the housing can be designed entirely or partially as an arm and/or tube.
  • inlet is a broad term to which its usual and common meaning should be given, as understood by those skilled in the art.
  • the term is not limited to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to a connection of the housing, via which an interior of the housing, which is completely or partially enclosed by the housing, can be supplied with cleaning fluid.
  • the inlet can, for example, have at least one inlet nozzle, for example a smooth inlet nozzle or an inlet nozzle with grooves or an inlet nozzle with a thread, in each case for connection, for example, to at least one inlet element.
  • the inlet nozzle can be connected to at least one inlet element selected from the group consisting of: a hose; an inlet pipe; an inlet opening, for example an opening in a flat support surface, an opening that is integrated in a fastening for the washing system, for example the nozzle arm or washing arm; an opening that is integrated in a bearing for the washing system, for example the nozzle arm or washing arm; an opening that is integrated into a hydraulic coupling, for example for connecting the washing system.
  • a hose for example an opening in a flat support surface, an opening that is integrated in a fastening for the washing system, for example the nozzle arm or washing arm
  • an opening that is integrated in a bearing for the washing system for example the nozzle arm or washing arm
  • an opening that is integrated into a hydraulic coupling for example for connecting the washing system.
  • nozzle opening is a broad term which is to be given its usual and common meaning as understood by the person skilled in the art.
  • the term is not limited to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to an opening in the housing which is formed on at least one side of the housing facing the item to be cleaned, for example an underside and/or an upper side of the housing.
  • the item to be cleaned can be sprayed, irradiated or dripped through the nozzle opening. with the cleaning fluid.
  • the nozzle opening can, for example, have a round, oval, slot-shaped or even polygonal shape.
  • the nozzle opening can, for example, have a diameter or equivalent diameter which, for example, does not exceed 10 mm, preferably does not exceed 5 mm.
  • the nozzle opening can in particular be designed to be smaller in its diameter or equivalent diameter than a diameter or equivalent diameter of the cleaning opening, for example by at least a factor of 1.5, preferably by at least a factor of 2 or even by at least a factor of 3.
  • the at least one nozzle opening and the cleaning opening can, for example, be arranged on opposite sides of the housing.
  • cleaning opening is a broad term which is to be given its usual and common meaning as understood by those skilled in the art.
  • the term is not limited to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to an opening in the housing through which cleaning fluid or other liquid can be flushed out of the housing during maintenance or a cleaning process.
  • the cleaning opening is preferably closed by the closure element during operation of the cleaning device, whereas the at least one nozzle opening preferably does not have such a closure element.
  • closure element is a broad term which is to be given its ordinary and common meaning as understood by those skilled in the art. The term is not limited to a specific or adapted meaning.
  • the term may, without limitation, refer in particular to a device, a single element or a group of elements which are arranged to close one or more other devices, elements or openings.
  • the closure element may be an element which is pressed from the outside or from the inside into the cleaning opening or pressed onto an edge of the housing around the cleaning opening in order to close it.
  • the housing around the cleaning opening may be smooth and preferably substantially flat so that the closure element can, for example, cooperate with a smooth edge around the cleaning opening as closure surfaces in order to close the cleaning opening.
  • the term "self-closing" as used here is a broad term which should be given its usual and common meaning, such as the The term is not limited to a specific or adapted meaning.
  • the term can, without limitation, refer in particular to a property of a device or an element to close another device, another element or an opening without the influence of external forces.
  • the self-closing closure element can be designed such that, without the influence of external forces, it is in a closed state or in a closed position in which the closure element closes the cleaning opening. In order to open the closure element and the cleaning opening and/or to hold the closure element in an open position, corresponding forces, in particular external forces, can then be required.
  • the closure element can, for example, have at least one spring and/or can be designed to be flexible and in particular resilient, so that the closure element is pressed against an edge of the housing around the cleaning opening due to a spring force, for example, and/or is pressed into the cleaning opening in order to keep it closed due to the spring force.
  • the closure element can be designed to be resilient overall, so that an intrinsic spring force is provided which holds the closure element in the closed state and against which a force must be applied in order to bring the closure element into an open position.
  • the closure element can be designed in particular as a captive and self-closing closure element for the cleaning opening in the washing system, in particular in a cleaning device, in particular a dishwasher.
  • a closure element that cannot be removed from the washing system without causing damage and which therefore cannot be lost is referred to as "captive”.
  • the closure element can in particular be a spring-operated slide, for example a rotary slide or a slide with an axial direction of movement.
  • a spring-operated flap or other designs are also conceivable.
  • the closure element can be designed as a single piece and can in particular be designed to be self-springing, so that preferably no additional spring element is provided.
  • the closure element can be designed as a single-piece, springy, flat closure element made of metal, which is permanently connected to the washing system, in particular the housing, for example the housing of the washing arm.
  • the connection preferably the permanent connection, can for example comprise a welded connection, for example a spot-welded connection, as will be explained in more detail below.
  • connection can also be a riveted connection, or comprise another type of connection, for example by forming at least one component, for example a "clinch connection".
  • connection can also be a riveted connection, or comprise another type of connection, for example by forming at least one component, for example a "clinch connection”.
  • the closure element can in particular be designed as a flap.
  • the closure element can be designed as a double-eccentric flap.
  • the closure element comprises at least one actuating element, in particular for opening or releasing the cleaning opening.
  • actuating element for opening or releasing the cleaning opening.
  • a protruding shaped element for actuating the same can be attached to the closure element.
  • this shaped element can be pressed down by hand, for example, so that the cleaning opening is released and the housing can be rinsed.
  • the cleaning opening preferably closes automatically.
  • the closure element can be designed to be flexible.
  • the closure element can be designed to be flexible in such a way that, due to its own flexibility, it is pressed against the housing in a closed position and closes the cleaning opening.
  • the flexibility can be such that the closure element can be brought into at least one open position by an external force, for example against an intrinsic spring force of the closure element, and releases the cleaning opening.
  • the closure element can be designed in such a way that, in the open position, it abuts the housing, for example against an inner wall of the housing which is opposite the cleaning opening, with the housing limiting any further opening movement of the closure element. In this way, for example, it can be prevented that the closure element is opened excessively and is thereby damaged.
  • the closure element can have an end that is firmly connected to the housing and a freely movable end.
  • the closure element can be designed as an arm or tongue, which is connected to the housing at one end, for example on an inner side of the housing, and whose other end is freely movable and preferably rests on an inner wall of the housing in a closed position due to an intrinsic spring force and closes the cleaning opening.
  • the closure element can be designed in particular as a flat closure element.
  • the closure element can accordingly be designed in particular as a substantially flat, elongated closure element, in particular as a tongue-shaped closure element.
  • the closure element can be designed at least partially as a spring tongue or spring plate, in particular as a profiled spring tongue.
  • the closure element can in particular be made at least partially from spring steel or spring sheet.
  • other elastic materials in particular other elastic metallic materials, for example non-ferrous metals, can also be used as the material for the closure element.
  • a design made entirely or partially from plastic is also possible.
  • the closure element can, for example, have a thickness as well as a length and a width, where, for example, the length and the width exceed the thickness by at least a factor of 5, preferably at least a factor of 10.
  • the closure element can have a thickness of 0.2 mm to 2 mm, for example from 0.3 mm to 1.5 mm.
  • the closure element can have a length of 20 mm to 100 mm, in particular a length of 40 mm to 70 mm.
  • the closure element can have a width of 5 mm to 30 mm, for example 5 mm to 15 mm.
  • the closure element can in particular be designed in one piece.
  • the closure element can be made in one piece from a spring sheet or sheet metal, without the closure element additionally having a spring element.
  • the closure element can also have a spring element that is firmly or loosely connected to other components, for example a tongue of the closure element.
  • the closure element can in particular be manually operable.
  • the closure element can be accessible from outside the housing and can be manually moved into an open position from outside the housing.
  • a spring force of the closure element can be designed in such a way that it can be easily overcome with a thumb or another finger of a human hand in order to open the closure element.
  • the closure element can in particular be arranged at least partially in an interior of the housing and can, for example, open inwards, into the interior.
  • the closure element can be used to open the cleaning opening be at least partially movable into the interior of the housing, for example by bending or pivoting a free end of the closure element into the interior.
  • the closure element has at least one actuating element, in particular an actuating button.
  • the housing has at least one actuating opening, wherein the actuating element can be actuated through the actuating opening from outside the housing.
  • the closure element can, for example, also close the actuating opening, so that both the cleaning opening and the actuating opening are closed by the closure element.
  • the actuating element protrudes through the actuating opening to the outside of the housing.
  • the actuating element can, for example, be designed as a profile, projection, contour, shaped element or embossing in the closure element.
  • the at least one actuating element can be fully or partially integrated into the closure element or formed in the closure element.
  • the at least one actuating element can also be fully or partially designed as a separate component and, for example, fastened to the closure element and/or connected to the closure element.
  • the actuating element can be manually actuated from the outside, i.e. from outside the housing.
  • the actuating element is arranged between an area in which the closure element is connected to the housing, also referred to as the connection area, and the cleaning opening. In this way, a leverage effect can be used effectively.
  • the closure element can in particular have at least one closure surface that rests on the housing around the cleaning opening when the closure element is closed.
  • This closure surface can, for example, interact with an edge, preferably a smooth edge, of the housing around the cleaning opening and thus provide a sealing surface and develop a sealing effect.
  • the closure element can optionally have at least one projection that projects into the cleaning opening.
  • the projection can, for example, have a cross-section that is the same as the cross-section of the cleaning opening.
  • the closure element can be fixed in particular in at least one connection area be mounted so as to be rotatable or pivotable about the connection area.
  • the closure element can, in particular in an open state, form a ramp in an interior of the housing, via which ramp cleaning fluid can be guided to the cleaning opening.
  • flushing channel is generally understood to mean a channel which is preferably open towards a wall of the housing on which the closure element rests and via which dirt particles which are caught between the closure element and the wall of the housing can be flushed out.
  • a flushing channel can easily be formed by at least one fold or bead in the closure element.
  • the closure element can in particular be connected to the housing, for example to an inner wall of the housing.
  • This connection can in particular be non-detachable, i.e. cannot be released without deformation of the material or destruction of the washing system.
  • the closure element can have a free end and an end connected to the housing.
  • the closure element can be connected to the housing by at least one connection selected from the group consisting of: a positive connection; a material connection; a force-fit connection; a rivet connection; a connection by forming; a welded connection, in particular a spot-welded connection; a screw connection.
  • the closure element can extend, in particular in a closed state, substantially parallel to an inner wall of the housing.
  • the closure element can generally be selected from the group consisting of: a flap; a slide, in particular a spring-loaded slide, a rotary slide, in particular a spring-loaded rotary slide.
  • a one-piece design is preferred overall, for example as an elongated, flat, spring-loaded closure element which is connected to an inner wall of the housing at a fixed end and which is freely movable at an opposite, free end and which is pressed against an inner wall of the housing due to its own spring force and thus closes the cleaning opening in a closed position.
  • the closure element can in particular be designed as a flap, for example as a double-eccentric flap.
  • the inlet can in particular have at least one inlet nozzle.
  • This inlet nozzle can be connected, for example, to a water tap or a water hose in order to carry out a rinsing process.
  • the inlet and the cleaning opening can in particular be arranged at a distance from one another, with the nozzle opening or a plurality of nozzle openings being arranged on a fluidic path between the inlet and the cleaning opening.
  • the washing system can in particular be designed entirely or partially as a washing arm.
  • the washing arm can in particular be selected from the group consisting of: a permanently mountable washing arm; a pivotably mounted washing arm; a rotatably mounted washing arm, in particular a rotatably mounted washing arm designed essentially symmetrically about an axis of rotation; a washing pipe; a nozzle pipe; a nozzle arm.
  • the housing can in particular, as stated above, have a bottom side, in particular a bottom side facing the items to be cleaned, with the at least one nozzle opening being arranged, for example, entirely or partially in the bottom side.
  • the housing can have an upper side arranged opposite the bottom side, with the cleaning opening being arranged in the upper side.
  • the at least one nozzle opening can also be formed entirely or partially in the upper side, for example on the same side as the at least one cleaning opening.
  • the housing can also have at least one nozzle opening in the bottom side and at least one nozzle opening in the upper side.
  • the latter configuration can be useful, for example, if the washing system, for example the washing arm, is arranged entirely or partially in the middle of the items to be cleaned, for example by the washing system being located between two baskets for the items to be cleaned.
  • one or more nozzle openings can also be arranged laterally in the housing.
  • the housing can be designed in one piece or in two parts, so that the bottom and the top can be components of one and the same housing element or components of different housing elements, for example a lower shell and an upper shell.
  • At least one elongated channel can be formed in the housing.
  • the inlet can be fluidically connected to the at least one nozzle opening via this channel.
  • the housing can enclose an elongated interior space which forms the channel.
  • the at least one channel can extend from the inlet in one direction or in several directions, for example symmetrically in both directions.
  • the cleaning device can in particular be selected from the group consisting of: a dishwasher; a single-chamber dishwasher, in particular a commercial single-chamber dishwasher; a conveyor dishwasher, in particular a belt conveyor or basket conveyor dishwasher.
  • a dishwasher a single-chamber dishwasher, in particular a commercial single-chamber dishwasher
  • a conveyor dishwasher in particular a belt conveyor or basket conveyor dishwasher.
  • other designs are also possible, for example designs as cleaning and disinfection devices, for example for cleaning care utensils.
  • the method can also include, for example, in particular before method step a), cleaning one or more individual nozzle openings, for example by using a pointed or elongated object to displace contaminants such as particles from the at least one nozzle opening into the interior of the housing. These can then be flushed out of the housing by the flushing process.
  • the closure element can be manufactured in one piece, which allows for a very cost-effective design is possible.
  • the locking element can be made very light and small, which means that there is no noticeable imbalance caused by the additional locking element, particularly in washing systems in the form of rotating washing arms.
  • the locking element can be designed to be springy and can rest against an inner contour of the housing when opened, which can effectively prevent accidental overstretching when actuated.
  • the closure element can also have a positive effect on flow properties during rinsing.
  • the closure element can form a ramp when open, along which any dirt particles that may be present can be guided directly to the cleaning opening during rinsing. This results in particularly efficient and simple rinsing.
  • the closure element can have at least one rinsing channel. Dirt particles that are not guided to the cleaning opening and discharged via the ramp and that get between the wash arm and the closure element can be rinsed out via the rinsing channel, for example. This can prevent the closure element from not closing completely due to dirt particles.
  • washing systems can generally be divided into two groups, namely washing systems that are stationary during operation and washing systems that move during operation, for example rotating or pivoting washing systems.
  • a cleaning opening that may be present can be closed simply by installing it in the functional position.
  • rotating systems are generally the most common design.
  • two or more washing arms, each with at least one nozzle opening move around an axis of rotation that is generally perpendicular to the arm extension.
  • the proposed self-closing closure element effectively addresses this problem, particularly when the closure element is firmly connected to the housing, which results in particular advantages for moving washing systems such as rotating washing arms.
  • the closure element can be designed not only to be self-closing but also to be captive, so that even in the event of incorrect operation there is no risk of loss and the functionality of the washing system is not restricted. After the rinsing process As a rule, no further action by the operating personnel is required to close the cleaning opening again.
  • the locking element can be manufactured inexpensively. By choosing the right material, in particular by using spring steel or spring sheet, the locking element can be made very robust and durable. It can also be made in one piece, so that a low susceptibility to failure can be expected.
  • FIG. 1 a possible embodiment of a cleaning device 110 according to the invention for cleaning items 112 is shown, which has several inventive Washing systems 111 in one possible embodiment.
  • the cleaning device 110 is designed in the embodiment shown as an example as a single-chamber dishwasher 114, in particular for commercial use, and particularly preferably as a program machine 116. It is pointed out that the invention can also be used in other types of cleaning devices, for example in transport dishwashers or in other dishwashers.
  • the cleaning device 110 comprises a cleaning chamber 118, in the interior 120 of which the items to be cleaned 112 can be accommodated, for example by means of one or more baskets 122.
  • the items to be cleaned 112 can be subjected to cleaning fluid via at least one application device 124, for example via a rinsing nozzle system 126 and/or via a rinsing nozzle system 128.
  • the rinsing nozzle system 126 can be fed in circulation mode, for example via a rinsing line 130 and a circulation pump 132 from a cleaning tank or rinsing tank 134, which can be heated via a radiator 136 or another type of heater.
  • the rinsing nozzle system 128 can be fed with rinsing fluid, for example fresh water, from a rinsing tank 142 via at least one rinsing line 138 and a rinsing pump 140.
  • rinsing fluid for example fresh water
  • a further heating device 144 can be provided in the rinsing tank 142, so that the rinsing tank 142 can be designed, for example, as a boiler and/or as a continuous flow heater.
  • both the rinsing nozzle system 126 and the rinsing nozzle system 128 in the exemplary embodiment shown each have a washing system 111 above the items to be cleaned 112 and a washing system 111 below the items to be cleaned 112, so that in both systems the items to be cleaned 112 are acted upon from above and from below.
  • the washing systems 111 in the rinsing nozzle system 126 and in the rinsing nozzle system 128 can be designed identically or differently.
  • the washing systems can be designed as rotatably mounted washing arms 146, which are rotatably mounted in the middle, for example.
  • the washing arms 146 each have an inlet 148, via which the washing arms 146 can be fed with cleaning fluid from the rinsing tank 134 or from the rinsing tank 142. Furthermore, the washing arms 146 each have, for example at least one outer end, at least one cleaning opening 150 and at least one closure element 152 closing the cleaning opening 150, which in Figure 1 are not shown in detail and which are shown as examples in the following figures and described in more detail below.
  • a drain 154 is also provided, via which cleaning fluid can be conveyed into a drain 158 by means of a drain pump 146.
  • the cleaning chamber 118 can have at least one door 160 and/or at least one other device for opening the cleaning chamber 118.
  • this door 160 can be arranged in a front wall of the cleaning chamber 118 facing the user.
  • the cleaning device 110 preferably further comprises a controller 162, by means of which a program sequence in the cleaning device 110 can be controlled.
  • the controller 162 can, for example, comprise at least one computer and/or at least one processor and, for example, at least one user interface.
  • the controller 162 can, for example, control the pumps 132, 140, 156 and/or other components of the cleaning device 110, such as valves not described in detail.
  • the controller 162 can access sensor data, for example data from at least one optional temperature sensor and/or at least one optional level sensor.
  • the cleaning device 110, in particular the controller 162, can be set up to run at least one rinsing program or cleaning program in the cleaning device 110, which can, for example, comprise at least one cleaning step and at least one drying step.
  • the at least one cleaning step can, for example, sequentially comprise an application of rinsing liquid via the rinsing nozzle system 126 and then an application of rinsing liquid via the rinsing nozzle system 128, the drying step comprises drying the items to be cleaned 112.
  • a washing system 111 in the form of a rotatable washing arm 146 is shown, which can be installed, for example, in the loading device 124 of the cleaning device 110 according to Figure 1 can be used.
  • the washing system 111 comprises a housing 164 in which the inlet 148 is formed.
  • the housing 164 can, for example, be made entirely or partially from metallic material such as sheet metal, for example by means of a deep-drawing process. Other materials such as plastic and other manufacturing processes such as injection molding are also conceivable.
  • the housing 164 can, for example, be made of several parts and can, for example, form an upper shell 166 and a lower shell 168, which each define an upper side 170 and a lower side 172, respectively. The definition can be seen, for example, in such a way that the underside always faces the item to be cleaned 112.
  • one or more nozzle openings 174 are formed in the housing 164, for example on the underside 172 and/or in the lower shell 168 and/or in the upper side 170 or in the upper shell 166, through which cleaning fluid can be sprayed, jetted or dripped onto the item to be cleaned 112.
  • a channel 178 is formed which fluidically connects the inlet 148 to the at least one nozzle opening 174.
  • the inlet 148 can, for example, have an inlet nozzle 180 and optionally at least one flange 182 for rotatable mounting.
  • the washing arm 146 can be connected, for example, to the rinsing line 130 or to the rinsing line 138.
  • the washing system 111 comprises, for example at least one outer end 184, the above-mentioned at least one cleaning opening 150 and the at least one closure element 152, which is designed as a self-closing closure element 152.
  • Figure 2 the washing system 111 with the closure element 152 in the closed position in a perspective view
  • Figure 3 shows a sectional view of the outer end 184 according to Figure 2 through the housing 164
  • Figure 4 shows the washing system 111 in a Figure 2 analog representation with opened closure element 152
  • Figure 5 shows the washing system 111 in a Figure 3 analog sectional view with opened closure element 152.
  • the closure element 152 is designed to be resilient or flexible, for example made of spring steel sheet, and forms, for example, an elongated spring element in the form of a spring tongue extending along a longitudinal axis of the washing arm 146.
  • the closure element 152 has, as shown in the Figures 3 and 5 recognizable, a fixed end 186, to which the closure element 152 is fixed to the housing 164, for example by means of a rivet connection 188 and/or a welded connection, for example a spot welded connection.
  • the opposite end of the closure element 152 is designed as a free end 190 and can be opened to open the closure element 152, as can be seen from the comparison of the Figures 3 and 5 visible, move into the interior 176.
  • the free end 190 can, for example, abut against the housing 164, for example the lower shell 168, so that a further opening movement and thus, for example, damage due to overstretching, can be prevented.
  • the closure element 152 is pressed against an inner wall 192 by its intrinsic spring force in its rest position, as in Figure 3 To open the spring force must be overcome, i.e. to move the locking element 152 into the Figure 5 As soon as the force used to open is no longer applied, the closure element 152 moves back into the position shown in Figure 3 shown closed position, so that the closure element 152 is designed as a self-closing closure element. Due to the fixation of the fixed end 186 to the housing 164, the closure element 152 is also designed to be captive or non-losable, especially since the closure element 152 is preferably arranged in the interior 176 of the housing 164.
  • the closure element 152 In the Figure 3 In the closed position shown, the closure element 152 is pressed against the inner wall 192 around the edge of the cleaning opening 150 due to its own spring force with its upper side, which forms a closure surface 194, so that the inner wall 192 and the closure surface 194 form sealing surfaces.
  • the closure element 152 can also have at least one projection 196 which projects into the cleaning opening 150. This projection 196 can be formed, for example, in the form of an embossing or in some other way in the sheet metal of the closure element 152.
  • the projection 196 can correspond in shape to the shape of the cleaning opening 150, so that the cleaning opening 150 is filled by the projection 196 in the closed state, as for example in the Figures 1 and 3
  • the shape of the cleaning opening 150 as well as the shape of the projection 196 can basically be chosen arbitrarily, for example oval, as in Figure 3 shown to take advantage of the elongated nature of the wash arm 146 and to provide the largest possible opening.
  • a user In order to clean the washing arm 146, a user, for example maintenance personnel, can dismantle the washing arm 146 and can, for example with a pointed object, first free the at least one nozzle opening 174 from contaminants adhering there, such as particles or lime, by pressing these contaminants into the interior 176. The user can then open the closure element 152 by pressing the free end 190 into the interior 176 and into the Figures 4 and 5 , shown position. The washing arm 146 is then supplied with rinsing liquid, for example fresh water, via the inlet 148, and the contaminants are rinsed out through the cleaning opening 150.
  • rinsing liquid for example fresh water
  • closure element 152 Due to the design of the closure element 152 with the fixed end 186 and the free end 190, the closure element 152 can form a ramp in the open state, via which rinsing liquid, for example fresh water, is guided along with the contaminants to the cleaning opening 150. After rinsing, no more force is exerted on the closure element 152, so that it closes itself again due to its spring force and closes the cleaning opening 150. The washing arm 146 can then be reassembled.
  • rinsing liquid for example fresh water
  • the closure element 152 can have at least one actuating element 198, by means of which the closure element 152 can be opened.
  • the actuating element 198 can comprise, for example, an actuating button 200 or a projection, which protrude outwards through an actuating opening 202 in the housing 164, so that a user can use his finger to push the closure element 152 into the Figure 5
  • the actuating button 200 can protrude so far outwards that when the closure element 152 is fully opened and in the position shown in Figure 5 shown position, is flush with the housing 164.
  • the problem can arise that dirt particles get between the closure element 152 and the housing 164 and hinder the self-closing effect of the closure element 152.
  • these dirt particles can hinder complete closing due to the closure element 152's own spring force.
  • the closure element 152 can have a rinsing channel 204.
  • This design which is also shown in the embodiment according to the Figures 2 to 5 can be implemented is exemplified by the Figures 6A and 6B shown.
  • Figure 6A a sectional view through the outer end 184 of the washing arm 146, with the closure element 152 once in the closed position (shown in dashed lines) and in the open position (shown in solid lines).
  • FIG. 6B shows a detailed representation of the flushing channel 204.
  • the flushing channel 204 can be provided, for example, between the fixation of the closure element 152 to the housing 164, i.e., for example, the rivet connection 188, and the actuating element 198.
  • the flushing channel 204 can be designed, for example, in the form of a bead 206 formed transversely to the longitudinal extension direction of the closure element 152 or as a fold. However, other designs are also possible.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)

Claims (13)

  1. Système de lavage (111) destiné au nettoyage d'objets à nettoyer (112), comprenant :
    - au moins un boîtier (164) ayant au moins une arrivée (148) pour alimenter le système de lavage (111) en fluide de nettoyage et au moins un orifice de buse (174) formé dans le boîtier (164) et relié de manière fluidique à l'arrivée (148) ;
    - au moins un orifice de nettoyage (150) formé dans le boîtier (164) ; et
    - au moins un élément de fermeture (152) à fermeture automatique pour fermer l'orifice de nettoyage (150),
    l'élément de fermeture (152) comprenant au moins un élément d'actionnement (198), le boîtier (164) comprenant au moins une ouverture d'actionnement (202), l'élément d'actionnement (198) étant apte à être actionné grâce à l'ouverture d'actionnement (202) depuis l'extérieur du boîtier (164), l'élément d'actionnement (198) faisant saillie à travers l'ouverture d'actionnement (202) vers l'extérieur du boîtier (164), l'élément d'actionnement (198) étant agencé entre une zone de liaison de l'élément de fermeture (152) avec le boîtier (164) et l'orifice de nettoyage (150).
  2. Système de lavage (111) selon la revendication précédente, dans lequel l'élément de fermeture (152) est conçu de manière flexible.
  3. Système de lavage (111) selon la revendication précédente, dans lequel l'élément de fermeture (152) est pressé contre le boîtier (164) dans une position fermée grâce à sa flexibilité et ferme l'orifice de nettoyage (150), l'élément de fermeture (152) étant apte à être amené dans au moins une position ouverte par l'application d'une force externe et libérant l'orifice de nettoyage (150).
  4. Système de lavage (111) selon la revendication précédente, dans lequel l'élément de fermeture (152) vient buter contre le boîtier (164) dans la position ouverte, le boîtier (164) limitant un mouvement d'ouverture supplémentaire de l'élément de fermeture (152) .
  5. Système de lavage (111) selon l'une des revendications précédentes, dans lequel l'élément de fermeture (152) présente une extrémité (186) solidaire du boîtier (164) et une extrémité (190) librement mobile.
  6. Système de lavage (111) selon l'une des revendications précédentes, dans lequel l'élément de fermeture (152) est conçu sous la forme d'un élément de fermeture (152) sensiblement plat et allongé.
  7. Système de lavage (111) selon l'une des revendications précédentes, dans lequel l'élément de fermeture (152) est réalisé au moins partiellement en acier à ressort.
  8. Système de lavage (111) selon l'une des revendications précédentes, dans lequel l'élément de fermeture (152) est réalisé en une seule pièce.
  9. Système de lavage (111) selon l'une des revendications précédentes, dans lequel l'élément de fermeture (152) est agencé au moins partiellement dans un espace intérieur (176) du boîtier (164).
  10. Système de lavage (111) selon l'une des revendications précédentes, dans lequel l'élément de fermeture (152) présente au moins une surface de fermeture (194) reposant sur le boîtier (164) autour de l'orifice de nettoyage (150) dans un état fermé de l'élément de fermeture (152), ainsi qu'au moins une saillie (196) pénétrant dans l'orifice de nettoyage (150) .
  11. Système de lavage (111) selon l'une des revendications précédentes, dans lequel au moins un canal de rinçage (204) est formé dans l'élément de fermeture (152) .
  12. Dispositif de nettoyage (110) pour le nettoyage d'objets à nettoyer (112), comprenant au moins une chambre de nettoyage (118) pour recevoir les objets à nettoyer (112), comprenant en outre au moins un dispositif d'alimentation (124) pour alimenter les objets à nettoyer (112) avec au moins un fluide de nettoyage, le dispositif d'alimentation (124) comprenant au moins un système de lavage (111) selon l'une des revendications précédentes.
  13. Procédé de maintenance d'au moins un système de lavage (111) d'un dispositif de nettoyage (110) selon la revendication 12, comprenant les étapes suivantes :
    a) ouverture de l'orifice de nettoyage (150) par ouverture de l'élément de fermeture (152) ; et
    b) mise en contact de l'entrée (148) avec du fluide de nettoyage et rinçage du fluide de nettoyage à travers l'orifice de nettoyage (150).
EP19702831.9A 2018-01-26 2019-01-24 Système de lavage destiné au nettoyage d'un produit à nettoyer Active EP3742952B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018201218.0A DE102018201218A1 (de) 2018-01-26 2018-01-26 Waschsystem zum reinigen von reinigungsgut
PCT/EP2019/051677 WO2019145381A1 (fr) 2018-01-26 2019-01-24 Système de lavage destiné au nettoyage d'un produit à nettoyer

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EP3742952B1 true EP3742952B1 (fr) 2025-01-15

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EP (1) EP3742952B1 (fr)
CN (1) CN111655109B (fr)
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DE102020104642A1 (de) * 2020-02-21 2021-08-26 Illinois Tool Works Inc. Wascharm
EP4467059A1 (fr) * 2023-05-26 2024-11-27 Fagor Industrial, S. Coop. Dispositif de nettoyage d'un lave-vaisselle et procédé de débouchage des buses de sortie des bras de pulvérisation du dispositif de nettoyage

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WO2019145381A1 (fr) 2019-08-01
DE102018201218A1 (de) 2019-08-01
CN111655109B (zh) 2024-04-19
CN111655109A (zh) 2020-09-11
EP3742952A1 (fr) 2020-12-02

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