EP3888801A1 - Dispositif de distribution de fluide et procédé de fonctionnement d'un dispositif de distribution de fluide - Google Patents

Dispositif de distribution de fluide et procédé de fonctionnement d'un dispositif de distribution de fluide Download PDF

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Publication number
EP3888801A1
EP3888801A1 EP21162899.5A EP21162899A EP3888801A1 EP 3888801 A1 EP3888801 A1 EP 3888801A1 EP 21162899 A EP21162899 A EP 21162899A EP 3888801 A1 EP3888801 A1 EP 3888801A1
Authority
EP
European Patent Office
Prior art keywords
media output
media
control
output element
output
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.)
Pending
Application number
EP21162899.5A
Other languages
German (de)
English (en)
Inventor
Sieghard Amann
Stefan Schmock
Leon JAMPOLSKI
Gustav Sieber
Jan DOEPNER
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3888801A1 publication Critical patent/EP3888801A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0638—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced by discharging the liquid or other fluent material through a plate comprising a plurality of orifices
    • B05B17/0646—Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/10—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to temperature or viscosity of liquid or other fluent material discharged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/63—Handgrips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
    • B05B17/0653—Details
    • B05B17/0676—Feeding means
    • B05B17/0684—Wicks or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0838—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container

Definitions

  • the invention is based on a media output device, in particular a spray or print head, for a media application system, with at least one media output element, in particular a membrane, which is intended to be excited to vibrate for a targeted output of a medium, with at least one actuator element, in particular a piezo actuator to excite the media output element and with at least one control and / or regulating unit to control the actuator element.
  • control and / or regulating unit is set up to adapt at least one control parameter of the actuator element with regard to the formation of a resolution-optimized point by means of the output medium, in particular dynamically.
  • “Provided” is to be understood in particular to be specially designed and / or specially equipped.
  • the fact that an object, in particular the media output element, is intended to be excited to vibrate for a specific function, in particular for the targeted output of the medium, is to be understood in particular as meaning that the object fulfills this specific function in at least one application and / or operating state and / or executes.
  • “Set up” is to be understood in particular as specifically programmed, specially designed and / or specially equipped, in particular with regard to an electrical and / or electronic component, in particular the control and / or regulating unit.
  • control and / or regulating unit is to be understood as meaning, in particular, a unit with at least one control electronics.
  • Control electronics should be understood to mean, in particular, a unit with a processor unit and with a memory unit and with an operating program stored in the memory unit.
  • a “control parameter” of an electrical and / or electronic component, in particular of the actuator element, is to be understood in particular as a parameter of an electrical and / or electronic signal which is provided for controlling the component.
  • control parameter is designed as an electrical current, in particular an amplitude of the electrical current, as an electrical voltage, in particular an amplitude of the electrical voltage, as a frequency, as a period or the like.
  • the media output device in particular the media output element, is preferably provided to apply at least one point to a surface by means of the medium, in particular to spray and / or print.
  • a "resolution-optimized point” is to be understood as meaning, in particular, a point formed from the medium on the surface which, with regard to a quantity of the medium, in particular a medium formed as a color, is optimized per area share.
  • the resolution-optimized point should preferably not be understood as a mathematical point.
  • the resolution-optimized point and / or to be generated and / or generated by means of the media output unit is preferably designed as an at least substantially round, contiguous and / or closed surface, which is in particular formed from a layer of the medium on the surface.
  • An output element in particular the media output element, is preferably provided to output at least 90%, preferably at least 95% and preferably at least 97%, of an output medium within a predetermined angular range, which is a cross-sectional area of the point on the surface, in order to generate the resolution-optimized point spans.
  • the control and / or regulating unit is preferably set up to atomize the medium by means of the media output element by adapting the control parameter in such a way that the output medium is at least essentially completely targeted and / or directed within the angular range and / or the cross-sectional area of the point distributed.
  • the control and / or regulating unit is not set up to bring about non-directional atomization of the medium into the surroundings of the media output element by adapting the control parameter.
  • the media output device and / or the media application system are / is particularly preferably provided for outputting the medium, in particular a color.
  • the media output device and / or the media application system are preferably / is not intended for use in a medical field and preferably distinguish / differs from medical devices and / or systems.
  • the media output device and / or the media application system are / is preferably provided for targeted and / or directed application of the medium, for example for printing and / or displaying complex objects.
  • the media output device and / or the media application system are / is not provided for atomizing the medium in an environment.
  • a "dynamic adaptation" of a parameter, in particular the control parameter should be understood in particular to mean that the parameter is continuously or periodically determined during operation, in particular between two successive excitations of the media output element by means of the actuator element, depending on at least one recorded and / or determined
  • Control parameter is adapted, in particular in order to achieve and / or maintain a predetermined ratio of a value of the parameter and a value of the control parameter.
  • the control and / or regulating unit is preferably set up to adapt the control parameter as a function of the control parameter, in particular dynamically.
  • control parameter is designed as a phase shift of a vibration signal, as a frequency, as an electrical current, as an electrical voltage, as a determined admittance or the like of the media output element and / or the actuator element.
  • control and / or regulating unit is set up to detect the control parameter of the media output element and / or of the actuator element.
  • the control and / or regulating unit preferably comprises at least one detection element for detecting the control parameter of the media output element and / or of the actuator element.
  • the detection element is preferably arranged at least partially on the media output element, the actuator element and / or at least one line element of the control and / or regulating unit.
  • the line element is provided for an at least electrical connection to the media output element and / or the actuator element.
  • the line element is particularly preferably provided to transmit the electrical and / or electronic signal, which in particular has the excitation parameter, to the actuator element in order to control the actuator element.
  • At least one reference value of the control parameter and / or the control parameter such as an admittance value, an electrical current, an electrical voltage or the like, is preferably stored in the control and / or regulating unit.
  • control and / or regulating unit is set up to set the control parameter as a function of the stored reference value, in particular as a function of a ratio and / or a difference between a detected value of the control parameter and / or the control parameter and the reference value, the control parameter, in particular dynamic, adapt, for example between two successive excitations of the actuator element.
  • the media output element is at least partially elastic, in particular elastically deformable, in particular can be excited to vibrate.
  • the medium is preferably vibrated by means of the dispensing openings of the media output element.
  • the output openings are designed in particular as a perforation or hole in the media output element.
  • the media output element is designed in particular as an ultrasonic membrane, an ultrasonic plate or the like.
  • the media output element, viewed in a main plane of extent of the media output element, is preferably configured in the shape of a circular area.
  • a "main extension plane" of a structural unit, in particular of the media output element is to be understood in particular as a plane which is parallel to a largest side surface of a smallest imaginary cuboid, which just completely surrounds the structural unit, and in particular runs through the center of the cuboid.
  • the media output element viewed in the main plane of extent of the media output element, is embodied as elliptical, polygonal, for example, square or triangular, or the like.
  • the media output device preferably comprises at least one actuator element which is provided to vibrate the media output element for the targeted output of the medium.
  • the actuator element is preferably designed as a piezo element, in particular as a piezo crystal.
  • the actuator element designed as a piezo element changes its shape as a result of the application of an electrical voltage to the actuator element, which in particular leads to a vibration of the media output element due to a mechanical coupling of the actuator element to the media output element.
  • the actuator element is designed as a MEMS actuator (micro-electromechanical system actuator), as an ultrasonic converter or as another actuator element that appears useful to a person skilled in the art.
  • the media output element preferably comprises at least one central axis.
  • the media output element is preferably provided to carry out concentric oscillations around the central axis of the media output element when excited by means of the actuator element.
  • the media output element is designed in such a way that upon excitation by means of the actuator element, a deformation of the media output element propagates in concentric waves around the central axis to an outer edge region of the media output element.
  • the outer edge region delimits the media output element in the main plane of extent of the media output element considered.
  • the actuator element is preferably designed in the shape of a circular ring and is arranged on the media output element.
  • the actuator element is preferably arranged coaxially to the media output element around the central axis of the media output element.
  • the central axis of the media output element corresponds to a central axis of the actuator element, which is in particular aligned at least substantially perpendicular to a main plane of extent of the actuator element.
  • the media output element is preferably provided to pick up the medium when it vibrates via contact with a media transmission element of the media transmission system and to output it during the vibration in an output direction of the media output element and / or in a conical output area.
  • the output direction and / or a central axis of the conical output region are / is oriented at least substantially parallel to the central axis of the media output element.
  • Essentially parallel should in particular mean an alignment of a straight line, a plane or a direction, in particular the output direction and / or the central axis of the conical output area, relative to another straight line, another plane or a reference direction, in particular the central axis of the media output element, are understood, the straight line, the plane or the direction compared to the other straight line, the other plane or the reference direction, especially viewed in a projection plane, a deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.
  • the media output element preferably comprises at least one receiving surface and at least one output surface.
  • the receiving surface and the output surface are preferably arranged on two outer sides of the media output element arranged one behind the other.
  • the output surface is arranged on a side of the media output element pointing in the output direction.
  • the receiving surface is preferably arranged on a side of the media output element facing away from the output surface.
  • the receiving surface and the output surface are at least partially formed and / or aligned at least substantially perpendicular to the central axis of the media output element.
  • the receiving surface is provided with the media transfer element to one To interact with the medium when the media output element vibrates, with the media output element in particular resting at least partially on the media transfer element via the receiving surface.
  • the medium is particularly preferably designed as a color, in particular a pigment mixture, a solution of pigments or the like.
  • the media output device is preferably provided for use with the ink, in particular for a directed and / or regulated delivery of the ink.
  • the media output device is preferably provided to form the resolution-optimized point on the surface by means of the output color. It is also conceivable that the medium is designed as a fluid different from one color, such as, for example, a care product, a varnish, a fertilizer, a plant protection product or the like.
  • the media dispensing device, in particular the media dispensing element is preferably provided for use with a medium designed as a non-Newtonian fluid.
  • the media output device and / or the media application system is not intended for a medical application and / or is designed differently from a medical device.
  • the media output device and / or the media application system is preferably provided for spraying and / or printing liquid media, in particular paint.
  • the design of the media output device according to the invention makes it possible, in particular with regard to a position of the output medium, to achieve an advantageously precise application of the medium, in particular a color.
  • a motif printed and / or sprayed via the media output device can be made possible with an advantageously high resolution.
  • a consistently and advantageously uniform distribution of the dispensed medium can be made possible.
  • An advantageously precise and environment-specific control of the actuator element can be achieved, in particular since the control parameters in changing environmental conditions, such as temperature, humidity, pressure or the like, by means of the control and / or regulating unit with regard to a high resolution of the printed and / or sprayed point can be adjusted.
  • the actuator element is provided to excite the media output element with a sinusoidal or sinusoidal signal, the control parameter being designed as a functional parameter of the sinusoidal or sinusoidal signal.
  • the control parameter being designed as a functional parameter of the sinusoidal or sinusoidal signal.
  • An advantageously simple and direct current measurement on the actuator element and / or the media output element can be made possible, in particular to determine a resonance frequency of the actuator element and / or the media output element for dynamic adaptation of the control parameter. It is advantageous to avoid overshoots of the electrical current, which can occur, for example, when controlled by means of square-wave signals.
  • a “functional parameter” of an electrical and / or electronic signal, in particular of the sinusoidal or sinusoidal signal should be understood to mean, in particular, a parameter from a large number of parameters that uniquely describe the electrical and / or electronic signal.
  • the functional parameter of the sinusoidal or sinusoidal signal is designed, for example, as a frequency, as a period, as an amplitude, as a phase shift, as a step width,
  • the actuator element have a circular base area, the maximum extent of which is between 15 mm and 25 mm, in particular between 16 mm and 22 mm, preferably between 18 mm and 20 mm and particularly preferably at least substantially 20 mm.
  • a media output element with advantageously good properties with regard to a directed and uniform output of the medium, in particular the color, can be made possible.
  • An advantageously compact design can be made possible, in particular with regard to a coordination of the resonance frequencies of the media output element and the actuator element.
  • the actuator element preferably encloses an output region of the media output element, via which the medium is output, in at least one cutting plane, in particular the main plane of extent of the media output element and / or the actuator element, viewed at least substantially completely.
  • the actuator element is preferably arranged in such a way that the main extension plane of the actuator element is at least substantially perpendicular to the main extension plane of the media output element is arranged.
  • the media output element preferably has a maximum transverse extent, in particular at least substantially perpendicular to the central axis of the media output element, which in particular has a value from a value range between 10 mm and 30 mm, preferably between 13 mm and 26 mm and preferably between 16 mm and 22 mm , is equivalent to.
  • the circular base area of the actuator element preferably has an inner diameter, in particular aligned at least substantially perpendicular to the central axis of the media output element, which in particular has a value from a value range between 4 mm and 28 mm, preferably between 6 mm and 20 mm and preferably between 8 mm and 15 mm.
  • the media output device comprises at least one further actuator element which is at least essentially structurally identical, in particular identical, to the actuator element.
  • the control and / or regulating unit is preferably set up to control the actuator element and the further actuator element by means of precisely one electrical and / or electronic signal, in particular via the same control parameter.
  • the actuator element and the further actuator element are preferably in contact with the media output element.
  • the actuator element preferably rests against the output surface of the media output element, the further actuator element in particular resting against the receiving surface of the media output element.
  • the actuator element and the further actuator element are particularly preferably arranged coaxially to one another, in particular around the central axis of the media output element.
  • control and / or regulating unit is set up to adapt the control parameter embodied as an excitation frequency to a setting of a size of the point to be output.
  • An advantageously simple and direct setting of the size of the point to be output can be made possible.
  • the control and / or regulating unit is preferably set up to regulate the actuation parameter of the actuator element, which is embodied as an excitation frequency, to the resonance frequency in order to enlarge the point to be output.
  • control and / or regulating unit is set up to regulate the actuation parameter of the actuator element, which is embodied as an excitation frequency, to a value different from the resonance frequency in order to enlarge the point to be output.
  • the control and / or regulating unit is preferably set up to determine a resonance frequency of a system comprising a media output element and an actuator element.
  • the control and / or regulating unit is set up to determine the resonance frequency of the system as a function of a maximum of the admittance and / or a zero point of a phase angle between the media output element and the actuator element.
  • the control and / or regulating unit is preferably set up to calculate the admittance via the quotient of an electrical current and an electrical voltage, which can in particular be detected by means of the control and / or regulating unit.
  • the media output element is provided to adjust the size of the point to be output to a maximum output angle of the medium, which spans an output cone around the central axis of the media output element in the output direction, within which the medium is at least substantially completely output.
  • the dispensing area is preferably arranged at least essentially completely within the dispensing cone. It is also conceivable that the control and / or regulating unit is set up to adapt and / or regulate the excitation parameter embodied as an excitation frequency to an anti-resonance frequency of the actuator element and / or the media output element.
  • control and / or regulating unit is set up to control the actuator element to output the point in such a way that the media output element within an excitation time between 2 and 200, preferably between 10 and 150 and preferably between 30 and 100, Performs vibrations.
  • An advantageously filled point can be made possible via the output medium, in particular with an advantageously high covering power with respect to the printed / sprayed surface.
  • An “excitation time” is to be understood in particular as a length of a period of time in which the media output element is by means of the actuator element is encouraged to output the point.
  • control and / or regulating unit is set up to at least temporarily suspend an excitation of the media output element by means of the actuator element between two successive excitation times, in particular for a movement of the media output unit and / or the media application system by a user and / or an external unit.
  • the control and / or regulating unit is preferably set up to set an opacity of the point on the surface as a function of the vibrations of the media output element within an excitation time.
  • the control and / or regulating unit is particularly preferably set up to control the actuator element to output a covering point on the surface in such a way that the media output element executes at least 50, preferably at least 100 and preferably at least 150 oscillations within an excitation time.
  • the control and / or regulating unit is preferably set up to control the actuator element to output the point in such a way that the media output element executes at least 2, preferably at least 10 and preferably at least 30 oscillations within an excitation time.
  • the media output element has a plurality of output openings with a maximum output opening diameter which is a value from a value range from 10 ⁇ m to 60 ⁇ m, preferably from 15 ⁇ m to 40 ⁇ m, preferably from at least substantially 20 ⁇ m to 30 ⁇ m and especially preferably of at least substantially 30 ⁇ m, wherein the control and / or regulating unit is set up to adapt the control parameters in such a way that the media output element excited via the actuator element at a maximum speed of between 0.5 m / s and 7 m / s , preferably between 0.7 m / s and 5 m / s and preferably between 0.9 m / s and 3 m / s, oscillates.
  • An advantageously directed output of the medium, in particular the color, can be achieved via the media output element.
  • An advantageously high proportion of the dispensed medium can be distributed over an advantageously small application area. Nebulization of the medium by means of the dispensing element can advantageously be prevented.
  • the output openings preferably extend over a maximum thickness of the media output element, in particular from the output surface to the receiving surface.
  • the dispensing openings are preferably, in particular the output openings delimiting inner surfaces of the media output element, in each case delimited by the output surface and the receiving surface.
  • the dispensing openings on a side of the dispensing openings facing the dispensing area each have a different cross-sectional area than on a side of the dispensing openings facing the receiving area.
  • the dispensing openings particularly preferably have a smaller cross-sectional area on the side facing the dispensing surface than on the side of the dispensing openings facing the receiving surface.
  • the inner surfaces delimiting the dispensing openings preferably span an angle of at most 80 °, preferably at most 65 ° and preferably at most 50 °, with the receiving surface on the side of the dispensing openings facing the receiving surface.
  • the inner surfaces delimiting the dispensing openings preferably span an angle of at least 80 °, preferably at least 85 ° and preferably at least substantially 90 ° with the dispensing surface on the side of the dispensing openings facing the dispensing surface.
  • the dispensing openings each preferably have at least one central axis, each of which is in particular aligned at least substantially perpendicular to the receiving surface and / or the dispensing surface.
  • the dispensing openings in particular with regard to the central axes of the dispensing openings, in the dispensing area and in the receiving area each have one, in particular an identical, concentric arrangement.
  • the dispensing openings preferably each have an at least substantially round, in particular circular, cross-sectional area.
  • the maximum output opening diameter is designed as a diameter of a cross-sectional area of the output openings.
  • the maximum output opening diameter (s) preferably extend at least substantially parallel to the main plane of extent of the media output element and / or at least substantially perpendicular to the central axis of the media output element.
  • the maximum speed of the media output element is preferably designed as a speed amplitude of at least one point within the media output element, in particular on the central axis of the media output element, which moves at least substantially parallel to the central axis of the media output element, especially when the media output element is excited by means of the actuator element. in particular oscillates.
  • the media output element have a plurality of output openings which form an output area of the media output element, in particular the aforementioned output area, which has a maximum extension between 1 mm and 6 mm, in particular between 3 mm and 3.5 mm, preferably between 3 , 1 mm and 3.4 mm and preferably of at least substantially 3.3 mm, said is adapted to the control and / or regulating unit, the designed as a maximum power control parameter to set a size of the output point, and in particular dynamic, adapt. Due to the design of the media output element, in particular the output openings, the size of the point can advantageously be set quickly and directly when the output is adjusted.
  • the maximum extent of the output region is preferably oriented at least substantially parallel to the main axis (s) of extension of the media output element and / or of the actuator element.
  • the output area is designed as an area which comprises the output openings, in particular all output openings delimited by the media output element.
  • the dispensing area preferably extends along the dispensing surface.
  • the media output element have a plurality of output openings which form an output region of the media output element, in particular the aforementioned output area, which has a maximum extension between 1 mm and 6 mm, in particular between 3 mm and 3.5 mm, preferably between 3.1 mm and 3.4 mm and preferably of at least substantially 3.3 mm, the control and / or regulating unit being set up to use the control parameter formed as a current amplitude to set a size of the point to be output to a value can be set between 80 mA and 180 mA. Due to the design of the media output element, in particular the output openings, the size of the point can advantageously be set quickly and directly when the current amplitude of the actuator element is set. A size of the resolution-optimized point can advantageously be set between 2 mm and 4 mm via the range of values for the current amplitude.
  • control and / or regulating unit is set up to determine, in particular in at least one operating state, a resonance frequency of the media output element as a function of a minimum and / or a zero crossing of a phase angle of an oscillation of the media output element and to determine the control parameters as a function of to adapt to the resonance frequency.
  • a regulation of the actuator element to a resonance frequency can advantageously be made possible even in the case of a heavily damped system composed of media output element and actuator element, wherein in particular regulation of the actuator element by means of a zero crossing of a phase of the system is made more difficult.
  • the minimum of the phase angle is preferably formed as a value of the phase angle which is lowest over a period of the electrical and / or electronic signal.
  • control and / or regulating unit is set up to use the control parameter to form the point at a position, in particular on the surface, within less than 20 mm, preferably less than 15 mm and preferably less than 13 mm to customize from the media output element.
  • An advantageously application-optimized adaptation of the excitation parameter can be achieved, in particular for printing / spraying an advantageously high-resolution point on the surface.
  • the media output device and / or the media application system is preferably provided to be arranged at a minimum distance of at most 20 mm, preferably at most 15 mm and preferably at most 13 mm from the surface for outputting the resolution-optimized point.
  • control and / or regulating unit is set up to adapt the control parameter in such a way that the resolution-optimized point is formed by means of the media output element on the surface through the output medium, in particular paint, with in particular the minimum distance of the media output element from the surface at most 20 mm, preferably at most 15 mm and preferably at most 13 mm.
  • a method for operating a media output device in particular a media output device according to the invention, is proposed, with at least one control parameter in at least one method step to control a media output element, in particular a membrane, of the media output device via an actuator element, in particular a piezo actuator, of the media output device by means of a control and / or regulating unit of the media output device with regard to the formation of a resolution-optimized point by means of the output medium, in particular dynamically.
  • the embodiment of the method according to the invention makes it possible, in particular with regard to a position of the dispensed medium, to achieve an advantageously precise application of the medium, in particular a paint.
  • a motif printed and / or sprayed via the media output device can be made possible with an advantageously high resolution.
  • a consistently and advantageously uniform distribution of the dispensed medium can be made possible.
  • An advantageously precise and environment-specific control of the actuator element can be achieved, in particular since the control parameters in changing environmental conditions, such as temperature, humidity, pressure or the like, by means of the control and / or regulating unit with regard to a high resolution of the printed and / or sprayed point can be adjusted.
  • the media output device according to the invention and / or the method according to the invention should / should not be restricted to the application and embodiment described above.
  • the media output device according to the invention and / or the method according to the invention can have a number that differs from a number of individual elements, components and units as well as method steps mentioned herein in order to fulfill a mode of operation described herein.
  • values lying within the stated limits should also be deemed disclosed and can be used in any way.
  • FIG 1 shows a media application system 10a, which is designed in particular as a paint application system, in a schematic representation.
  • the media application system 10a comprises a media output device 12a for outputting at least one medium and a media storage device 14a.
  • the media output device 12a is designed in particular as a spray or print head.
  • the media application system 10a comprises a base unit 16a to which the media storage device 14a and the media output device 12a can be fastened.
  • the media output device 12a is shown in particular in a state arranged on the base unit 16a and the media storage device 14a is shown in a state separated from the base unit 16a and the media output device 12a.
  • the media application system 10a preferably comprises at least one fixing unit 18a, in particular at least partially formed separately from the media storage device 14a and / or from the media output device 12a, which is provided to fix the media storage device 14a and / or the media output device 12a on the base unit 16a.
  • the base unit 16a preferably comprises at least one housing 20a on and / or in which a multiplicity of components of the media application system 10a are arranged.
  • the housing 20a forms, at least in sections, a handle of the base unit 16a.
  • the housing 20a preferably forms, at least in sections, a receiving area 22a of the base unit 16a, to which the media storage device 14a and the media output device 12a can be fastened.
  • the base unit 16a preferably comprises at least one reference element 24a, in particular arranged on the housing 20a in the receiving region 22a.
  • the reference element 24a is preferably designed as a lighting element, in particular as an LED-illuminated light sphere.
  • the reference element 24a is designed as a radiation-free reference element, for example as a QR code, as a bar code or as another reference element that appears useful to a person skilled in the art.
  • the media storage device 14a comprises a media container 30a for storing the medium and a mechanical interface 32a for connection to the media output device 12a and / or the base unit 16a.
  • the media storage device 14a comprises a media transfer unit 34a for transferring the medium from the media container 30a to the media output device 12a in at least one connected state of the interface 32a with the media output device 12a.
  • the media transfer unit 34a comprises at least one porous media transfer element 36a, which is arranged on an output channel 38a of the media storage device 14a. In a connected state of the interface 32a, the media transfer element 36a is at least fluidly connected to an, in particular vibration-excited, media output element 40a of the media output device 12a, in particular arranged on the media output element 40a.
  • the media storage device 14a is provided for receiving the at least one medium, in particular the at least one color medium.
  • the media storage device 14a and / or the media output device 12a can be coupled, in particular operatively connected, to further components of the media application system 10a.
  • the media storage device 14a is preferably designed as an exchangeable capsule.
  • the media storage device 14a is designed as an exchangeable cartridge, as an exchangeable tank, as an exchangeable cartridge or as another media storage device that appears useful to a person skilled in the art, in particular for storing a color.
  • the media storage device 14a can be releasably attached via the interface 32a to the base unit 16a of the media application system 10a, in particular to the housing 20a of the base unit 16a.
  • the media storage device 14a can be attached to the base unit 16a, in particular to the housing 20a of the base unit 16a, in an exchangeable manner for a further media storage device 14a, which in particular contains a further medium.
  • the media output device 12a is preferably designed as an oscillation output unit.
  • the media output device 12a is provided to output the medium received by the media storage device 14a by means of oscillations, in particular in an ultrasonic frequency range, in particular in an output direction 82a onto the surface 26a.
  • the media output device 12a is designed as a valve nozzle unit, as a pneumatic output unit or as another output unit that appears sensible to a person skilled in the art.
  • the media output device 12a is provided to generate media points, in particular color points, on the surface 26a.
  • the media output device 12a in particular for generating media dots on the surface 26a, is provided, in particular in at least one printing operating mode, to output the medium in droplets, in particular in the manner of a printer.
  • the media output device 12a can preferably have at least one spray operating mode in which the media output device 12a is provided for continuous, in particular spraying, output of the medium.
  • the media output device 12a can be releasably attached to the base unit 16a, in particular to the housing 20a of the base unit 16a.
  • the media output device 12a can be attached to the base unit 16a, in particular to the housing 20a of the base unit 16a, interchangeably with a further media output device 12a, which in particular can have media output properties different from the media output device 12a.
  • the media output element 40a is preferably designed as a membrane. The media output element 40a is provided to be excited to oscillate in a targeted output of the medium.
  • the medium is preferably designed as a liquid medium.
  • the medium can be provided for a spray application and / or for a print application.
  • the medium is preferably designed as a color medium, for example as a dye ink, as a pigment ink, as a spray paint, as a dispersion paint, as an acrylic paint, as an, in particular water-based, acrylic paint or the like.
  • a Spray chalk, a spray film or something else that makes sense to a specialist appearing medium is formed.
  • the media application system 10a in particular the media output unit 12a, is intended to use a medium which has a viscosity function that has a value between 2 mPas and 40 mPas, preferably between 10 mPas and 35 mPas and preferably between 15 mPas and 30 mPas.
  • the media application system 10a, in particular the media output unit 12a is preferably provided for using a medium which, at a temperature between 5 ° C. and 50 ° C., has a dynamic surface tension that corresponds to a value between 30 mN / m and 62 mN / m.
  • the fixing unit 18a preferably comprises at least one fixing element 42a arranged on the base unit 16a and / or formed by the base unit 16a, which is provided to fix the media storage device 14a and / or the media output device 12a on the base unit 16a, in particular on the receiving area 22a .
  • the fixing unit 18a is preferably provided to fix the media storage device 14a and the media output device 12a together, in particular in interaction with one another, on the base unit 16a.
  • the media storage device 14a and / or the media output device 12a are / is preferably provided for positive and / or non-positive, interactive fixation, in particular by means of a latching connection, by means of a snap connection, by means of a clamp connection or the like, to one another and / or to the base unit 16a .
  • the media storage device 14a and / or the media output device 12a are / is provided for interactive fixation by means of a magnetic connection, by means of a suction connection, by means of a Velcro connection or the like, on one another and / or on the base unit 16a.
  • the media output device 12a and the media application system 10a are preferably provided for targeted and / or directed application of the medium, for example for printing and / or displaying complex objects and / or for spraying the medium onto a suitable surface.
  • the media output device 12a comprises the media output element 40a, two actuator elements 44a, 46a, in particular an actuator element 44a and a further actuator element 46a, to excite the media output element 40a and a control and / or regulating unit 48a to control the two actuator elements 44a, 46a, in particular to excite the media output element 40a.
  • the control and / or regulating unit 48a is preferably provided to set at least one control parameter of the actuator elements 44a, 46a to excite the media output element 40a, in particular dynamically.
  • control parameter is designed as a functional parameter of a sinusoidal or sinusoidal electrical and / or electronic signal, in particular by means of which the two actuator elements 44a, 46a are controlled via the control and / or regulating unit 48a.
  • the control and / or regulating unit 48a is preferably set up to output the sinusoidal or sinusoidal-like electrical and / or electronic signal for controlling the two actuator elements 44a, 46a, in particular to transmit it to the two actuator elements 44a, 46a.
  • the control and / or regulating unit 48a comprises at least one computing unit designed as a programmable FPGA or the like, which is not shown in the figures in particular.
  • the control and / or regulating unit 48a is preferably set up to adapt the control parameter as a function of a control parameter of the media output element 40a and / or the actuator elements 44a, 46a, in particular dynamically.
  • the control parameter is designed as a phase shift of a vibration signal, as a frequency, as an electrical current, as an electrical voltage, as a determined admittance or the like of the media output element 40a and / or the actuator elements 44a, 46a.
  • the control and / or regulating unit 48a is set up to detect the control parameter of the media output element 40a and / or the actuator elements 44a, 46a.
  • the control and / or regulating unit 48a preferably comprises a detection element 50a for detecting the control parameter of the media output element 40a and / or the actuator elements 44a, 46a.
  • the detection element 50a is preferably arranged at least partially on a line element 52a of the control and / or regulating unit 48a.
  • the line element 52a is for an at least electrical connection to the media output element 40a and / or the two actuator elements 44a, 46a are provided.
  • the line element 52a is particularly preferably provided to transmit the electrical and / or electronic signal, which in particular has the excitation parameter, to the actuator elements 44a, 46a for controlling the actuator elements 44a, 46a.
  • At least one reference value of the control parameter and / or the control parameter is preferably stored in the control and / or regulating unit 48a.
  • the control and / or regulating unit 48a is set up to set the control parameter as a function of the stored reference value, in particular as a function of a ratio and / or a difference between a detected value of the control parameter and / or the control parameter and the reference value, the control parameter, in particular dynamically, for example between two successive excitations of the actuator elements 44a, 46a.
  • the media output element 40a is at least partially elastic, in particular elastically deformable, in particular can be excited to vibrate.
  • the media output element 40a preferably delimits a multiplicity of output openings 54a through which the medium in particular can be discharged.
  • the output openings 54a are designed in particular as a perforation or hole in the media output element 40a.
  • the media output element 40a is designed in particular as an ultrasonic membrane, as an ultrasonic plate or the like.
  • the media output element 40a is preferably embodied in the shape of a circular area when viewed in a main plane 56a of the media output element 40a, which corresponds in particular to a membrane plane of the media output device 12a.
  • the media output element 40a viewed in the main extension plane 56a of the media output element 40a, is configured in the shape of an elliptical, polygonal, for example square or triangular, or the like.
  • the media output element 40a is preferably provided to receive the medium from the media transfer element 36a and to output it in the direction of the surface 26a, in particular in a targeted and / or directed manner (see FIG Figure 1 ).
  • the two actuator elements 44a, 46a are preferably designed as piezo elements, in particular as piezo crystals.
  • the actuator elements 44a, 46a designed as piezo elements change their shape as a result of the application of an electrical voltage to the actuator elements 44a, 46a designed as piezo elements, which results in oscillation in particular due to a mechanical coupling of the actuator elements 44a, 46a designed as piezo elements with the media output element 40a of the media output element 40a leads.
  • the actuator elements 44a, 46a are designed as MEMS actuators (micro-electromechanical system actuators), as ultrasonic converters or as other actuator elements 44a, 46a that appear sensible to a person skilled in the art.
  • the actuator elements 44a, 46a are each designed in the shape of a circular ring and are arranged coaxially around a central axis 58a of the media output element 40a on the media output element 40a.
  • the two actuator elements 44a, 46a are preferably at least electrically connected to the control and / or regulating unit 48a.
  • the two actuator elements 44a, 46a are provided to excite the media output element 40a with the sinusoidal or sinusoidal signal, the control parameter being designed as a functional parameter of the sinusoidal or sinusoidal signal.
  • the functional parameter of the sinusoidal or sinusoidal signal is designed, for example, as a frequency, as a period, as an amplitude, as a phase shift, as a step width, in particular of the sinusoidal signal, or the like.
  • the two actuator elements 44a, 46a have a circular base area, the maximum extent 60a of which is between 15 mm and 25 mm, in particular between 16 mm and 22 mm, preferably between 18 mm and 20 mm and particularly preferably at least substantially 20 mm.
  • the actuator elements 44a, 46a preferably enclose an output region 62a of the media output element 40a, via which the medium is output, in at least one sectional plane, in particular one / the main extension plane 56a of the media output element 40a and / or one of the actuator elements 44a, 46a, viewed at least substantially completely .
  • the two actuator elements 44a, 46a are preferably arranged such that the main extension planes of the actuator elements are arranged at least substantially perpendicular to the main extension plane 56a of the media output element 40a.
  • the circular base area of the actuator elements 44a, 46a has a maximum inner diameter 64a, in particular at least substantially perpendicular to the central axis 58a of the media output element 40a, which in particular has a value from a value range between 4 mm and 28 mm, preferably between 6 mm and 20 mm and preferably between 8 mm and 15 mm.
  • the two actuator elements 44a, 46a are at least essentially structurally identical, in particular identical.
  • the control and / or regulating unit 48a is preferably set up to control the actuator element 44a and the further actuator element 46a by means of precisely one electrical and / or electronic signal, in particular via the same control parameter.
  • the actuator element 44a preferably rests on an output surface 66a of the media output element 40a, with the further actuator element 46a in particular on a receiving surface 68a (see FIG Figure 3 ) of the media output element 40a is applied.
  • the actuator element 44a and the further actuator element 46a are particularly preferably arranged coaxially to one another, in particular around the central axis 58a of the media output element 40a.
  • the actuator elements 44a, 46a have a maximum extension 60a of at least essentially 16 mm.
  • the control and / or regulating unit 48a is set up to adapt the control parameter embodied as an excitation frequency to a setting of a size of the point to be output.
  • the control and / or regulating unit 48a is set up to increase the point to be output to regulate the control parameters of the actuator elements 44a, 46a designed as the excitation frequency to the resonance frequency, the excitation frequency in particular being adapted in this way by means of the control and / or regulating unit that a value of the excitation frequency corresponds at least substantially to the resonance frequency.
  • control and / or regulating unit 48a is set up to regulate the control parameter of the actuator elements 44a, 46a, which is embodied as an excitation frequency, to a value different from the resonance frequency in order to enlarge the point to be output.
  • the control and / or regulating unit 48a is preferably set up to determine a resonance frequency of a system made up of the media output element 40a and the actuator elements 44a, 46a.
  • control and / or regulating unit 48a is set up to determine the resonance frequency of the system as a function of a maximum of the admittance and / or a zero point of a phase angle between the media output element 40a and the actuator elements 44a, 46a, the phase angle in particular by means of the detection element 50a detected current and / or voltage values can be determined.
  • the control and / or regulating unit 48a is preferably set up to calculate the admittance via the quotient of an electrical current and an electrical voltage, which can be detected in particular by means of the control and / or regulating unit 48a.
  • the media output element 40a is preferably provided to adjust the size of the point to be outputted to a maximum output angle 70a of the medium, which spans an output cone 72a around the central axis 58a of the media output element 40a in the output direction, within which the medium is at least substantially completely output.
  • the output region 62a is preferably arranged at least substantially completely within the output cone 72a.
  • the control and / or regulating unit 48a is set up to control the two actuator elements 44a, 46a to output the point in such a way that the media output element 40a within an excitation time between 2 and 200, preferably between 10 and 150 and preferably between 30 and 100, Performs vibrations.
  • control and / or regulating unit 48a is set up to at least temporarily suspend an excitation of the media output element 40a by means of the actuator elements 44a, 46a between two successive excitation times, in particular for a movement of the media output device 12a and / or the media application system 10a by a user and / or the external unit 28a.
  • the output openings 54a have a maximum output opening diameter 74a which is a value from a value range from 10 ⁇ m to 60 ⁇ m, preferably from 15 ⁇ m to 40 ⁇ m, preferably from at least essentially 20 ⁇ m to 30 ⁇ m and particularly preferably from at least essentially 30 ⁇ m , wherein the control and / or regulating unit 28a is set up to adapt the control parameters in such a way that the media output element 40a excited via the actuator elements 44a, 46a at a maximum speed between 0.5 m / s and 7 m / s, preferably between 0.7 m / s and 5 m / s and preferably between 0.9 m / s and 3 m / s, vibrates.
  • a maximum output opening diameter 74a which is a value from a value range from 10 ⁇ m to 60 ⁇ m, preferably from 15 ⁇ m to 40 ⁇ m, preferably from at least essentially 20 ⁇ m to 30 ⁇ m and particularly
  • the dispensing openings 54a particularly preferably have a smaller cross-sectional area on the side facing the dispensing surface 66a than on the side of the dispensing openings 54a facing the receiving surface 68a.
  • the inner surfaces delimiting the dispensing openings 54a on the side of the dispensing openings 54a facing the receiving surface and the receiving surface 68a form an angle of at most 80 °, preferably at most 65 ° and preferably at most 50 °.
  • the inner surfaces delimiting the dispensing openings 54a on the side of the dispensing openings 54a facing the dispensing surface 66a and the dispensing surface 66a preferably span an angle of at least 80 °, preferably at least 85 ° and preferably at least substantially 90 °.
  • the maximum speed of the media output element 40a is preferably formed as a speed amplitude of at least one point within the media output element 40a, in particular on the central axis 58a of the media output element 40a, which, in particular when the media output element 40a is excited by means of the actuator elements 44a, 46a, at least essentially moves parallel to the central axis 58a of the media output element 40a, in particular oscillates.
  • the output region 62a of the media output element 40a has a maximum extension 76a between 1 mm and 6 mm, in particular between 3 mm and 3.5 mm, preferably between 3.1 mm and 3.4 mm and preferably of at least substantially 3.3 mm, on, wherein the control and / or regulating unit 48a is set up to set the control parameter in the form of a current amplitude for setting a size of the point to be output to a value between 80 mA and 180 mA.
  • the maximum extension 76a of the output region 62a is preferably aligned at least substantially parallel to the main extension axis (s) 56a of the media output element 40a and / or the actuator elements 44a, 46a.
  • the output region 62a is designed as a region which comprises the output openings 54a, in particular all output openings 54a delimited by the media output element 40a.
  • the dispensing region 62a preferably extends along the dispensing surface 66a.
  • the output region 62a of the media output element 40a has a maximum extension 76a between 1 mm and 6 mm, in particular between 3 mm and 3.5 mm, preferably between 3.1 mm and 3.4 mm and preferably of at least substantially 3.3 mm, on, the control and / or regulating unit 48a is set up to adapt the control parameter embodied as maximum power to a setting of a size of the point to be output, in particular dynamically.
  • the output openings 54a are arranged in an at least substantially concentric arrangement, in particular on at least one circular ring, around the central axis 58a of the media output element 40a.
  • the at least essentially concentric arrangement is particularly preferably embodied differently from a matrix arrangement, in particular in rows and columns.
  • all of the output openings 54a delimited by the media output element 40a are arranged in the at least substantially concentric arrangement around the central axis 58a of the media output element 40a. It is conceivable that the output openings 54a, in particular all of the output openings 54a delimited by the media output element 40a, are arranged within an annular region around the central axis 58a of the media output element 40a.
  • the media output element 40a is preferably provided to carry out radially concentric vibrations for the output of the medium, in particular with regard to the central axis 58a of the media output element 40a, the output openings 54a in particular vibrating with the media output element 40a.
  • the output openings 54a in particular all output openings 54a delimited by the media output element 40a, have a minimum distance 80a from the central axis of the media output element 40a of at most 4 mm, preferably at most 3 mm, preferably at most 2 mm and particularly preferably at most 1.7 mm ( please refer Figure 3 ).
  • the central axis 58a of the media output element 40a is preferably aligned at least substantially perpendicular to the main extension plane 56a of the media output element 40a.
  • the media output element 40a is preferably provided to pick up the medium when it vibrates via contact with the media transfer element 36a of the media transfer unit 34a and to output it in an output direction 82a of the media output element 40a and / or in the output cone 72a during the oscillation.
  • the output direction 82a and / or a central axis of the output cone 72a are / is at least substantially parallel to the central axis 58a of the media output element 40a aligned.
  • the output direction 82a points from the media output element 40a to the surface 26a.
  • the media output element 40a comprises the receiving surface 68a and the output surface 66a.
  • the receiving surface 68a and the output surface 66a are preferably arranged on two outer sides of the media output element 40a arranged one behind the other.
  • the output surface 66a is arranged on a side of the media output element 40a pointing in the output direction 82a.
  • the receiving surface 68a is preferably arranged on a side of the media output element 40a facing away from the output surface 66a.
  • Main planes of extension of the receiving surface 68a and the output surface 66a are preferably formed and / or aligned at least substantially perpendicular to the central axis of the media output element 40a.
  • the receiving surface 68a is preferably provided to interact with the media transfer element 36a to receive the medium when the media output element 40a vibrates, with the media output element 40a in particular resting at least partially on the media transfer element 36a via the receiving surface 68a.
  • the media output element 40a preferably has a maximum transverse extent 84a, in particular at least substantially perpendicular to the central axis 58a of the media output element 40a, which in particular has a value from a value range between 10 mm and 30 mm, preferably between 13 mm and 26 mm and preferably between 16 mm and 22 mm.
  • the output openings 54a extend over a maximum thickness of the media output element 40a, in particular from the output surface 66a to the receiving surface 68a.
  • the output openings 54a in particular inner surfaces of the media output element 40a delimiting the output openings 54a, are each delimited by the output surface 66a and the receiving surface 68a.
  • the dispensing openings 54a on a side of the dispensing openings 54a facing the dispensing area 66a each have a different cross-sectional area than on a side of the dispensing openings 54a facing the receiving area 68a.
  • the dispensing openings 54a each preferably have at least one central axis, each of which is in particular aligned at least substantially perpendicular to the receiving surface 68a and / or the dispensing surface 66a.
  • the dispensing openings 54a preferably have, in particular with respect to the central axes of the dispensing openings, in the dispensing surface 66a and in the receiving surface 68a, each has an, in particular the same, at least substantially concentric arrangement.
  • the dispensing openings 54a have a minimum spacing 86a from one another which corresponds to ten to twenty times, in particular twelve to sixteen times, a maximum dispensing opening diameter 74a of the dispensing openings 54a (see FIG Figure 4 ), the media output element 40a being intended for use with the medium which, in particular under standard conditions, has a viscosity function that has a value between 2 mPas and 40 mPas, preferably between 4 mPas and 25 mPas and preferably between 5 mPas and 13 mPas.
  • the dispensing openings 54a preferably each have an at least substantially round, in particular circular, cross-sectional area.
  • the maximum discharge opening diameter 74a is formed as a diameter of a cross-sectional area of the output openings 54a.
  • the minimum distance 86a between the output openings 54a preferably corresponds to a value from a value range between 100 ⁇ m and 1200 ⁇ m, preferably between 150 ⁇ m and 800 ⁇ m, preferably between 200 ⁇ m and 600 ⁇ m and particularly preferably between 260 ⁇ m and 480 ⁇ m.
  • the dispensing openings 54a particularly preferably have a minimum distance 86a from one another which corresponds to ten to twenty times, in particular twelve to sixteen times, the maximum dispensing opening diameter 74a of the dispensing openings 54a.
  • the media output device 12a has only one actuator element 44a, 46a which is arranged and / or rests on the output surface 66a or the receiving surface 68a.
  • the media output element 40a has a larger or smaller maximum transverse extent 84a than the actuator element (s) 44a, 46a, for example of at least substantially 16 mm or of at least substantially 20 mm.
  • FIG. 3 A detailed side view of the media output element 40a is shown in an area around the central axis 58a of the media output element 40a.
  • the media output element 40a has a in an unexcited state Curvature 88a, the output openings 54a being arranged in the region of the curvature 88a.
  • the media output element 40a preferably has the unexcited state in a deactivated state of the actuator elements 44a, 46a, in a state of the media output element 40a separate from the actuator elements 44a, 46a and / or between two periods of oscillation of the media output element 40a during operation by means of the actuator elements 44a, 46a .
  • the curvature 88a is arranged centrally on the media output element 40a.
  • the curvature 88a viewed along the central axis 58a of the media output element 40a, is preferably formed point-symmetrically to the central axis 58a of the media output element 40a.
  • the curvature 88a particularly preferably extends in the dispensing direction 82a and / or in a direction directed from the receiving surface 68a to the dispensing surface 66a.
  • the curvature 88a has a contour 90a in at least one, in particular at least substantially perpendicular to the main extension plane 56a of the media output element 40a and encompassing the central axis 58a of the media output element 40a, a contour 90a which is formed from three circular arc-shaped sections 92a, 94a.
  • a first circular arc-shaped section 92a of the contour 90a comprises a point of the media output element 40a on the central axis 58a of the media output element 40a, in particular an apex 118a, and has a radius 96a which has a value from a value range of 3 mm to 8 mm, preferably 5 mm to 7 mm and particularly preferably of at least substantially 5.95 mm.
  • a second and a third circular arc-shaped section 94a are identical to one another and delimit the first circular arc-shaped section 92a, viewed along the contour 90a, on both sides.
  • the second and third circular arc-shaped section 94a each have a radius 98a which is smaller than the radius 96a of the first circular arc-shaped section 92a.
  • the radius 98a of the second and third circular arc-shaped section 94a preferably corresponds to a value from a value range of 1 mm to 5 mm, preferably 2 mm to 4 mm and preferably at least substantially 2.9 mm.
  • the media output element 40a preferably has at least one edge region 100a which delimits the curvature 88a and, in particular, at least substantially completely surrounds it around the central axis 58a of the media output element 40a.
  • the media output element 40a is designed to be planar in the edge region 100a.
  • the media output element 40a is provided over the edge area 100a of the media output element 40a to be applied to the actuator elements 44a, 46a.
  • the actuator elements 44a, 46a are preferably circular and in the edge region 100a of the media output element 40a lie against the media output element 40a via the output surface 66a and the receiving surface 68a (see FIG Figure 2 ).
  • the output openings 54a are, in particular all, arranged in the region of the bulge 88a, wherein in particular the output openings 54a, in particular in the unexcited state of the media output element 40a, are at least partially frustoconical.
  • curvature 88a is also conceivable, for example with a continuously uniform circular arc-shaped contour 90a, which in particular has the radius 96a of the first circular arc-shaped section 92a and / or the radius 98a of the second and third circular arc-shaped section 94a, and / or a different arrangement or design of the sections 92a, 94a of the contour 90a.
  • the media output element 40a has an at least substantially closed surface 104a in a near region 102a of the central axis 58a, which is in particular free of output openings 54a and which is arranged in the region of the curvature 88a of the media output element 40a.
  • the at least substantially closed surface 104a is free from dispensing openings 54a.
  • the at least substantially closed surface 104a extends within, in particular centrally, the at least substantially concentric arrangement of the dispensing openings 54a.
  • the at least substantially closed surface 104a preferably extends within a minimum distance 106a around the central axis 58a of the media output element 40a of at most 2 mm, preferably at most 1 mm, preferably at most 0.5 mm and particularly preferably at most 0.2 mm.
  • the at least substantially closed surface 104a is preferably arranged in such a way that the central axis 58a of the media output element 40a runs centrally through the at least substantially closed surface 104a.
  • a roughness of the media output element 40a on the output surface 66a and / or on the receiving surface 68a is preferably at least essentially 0.2 mm.
  • the curvature 88a is designed such that the curvature 88a, in particular the second and / or the third circular arc-shaped section 94a of the contour 90a, in an edge region of the curvature 88a with the main extension plane 56a of the media output element 40a has a maximum angle 108a of at most 45 °, preferably at most 35 ° and preferably at most 30 °.
  • the edge region of the bulge 88a preferably extends along an outer edge 110a of the bulge 88a, via which in particular the bulge 88a is delimited by the planar edge region 100a of the media output element 40a.
  • the curvature 88a spans with the main extension plane 56a of the media output element 40a preferably a maximum angle 108a of at least 5 °, preferably at least 10 ° and preferably at least 15 °.
  • the curvature 88a is particularly preferably embodied in the edge region of the curvature free of dispensing openings 54a.
  • the bulge 88a is preferably formed at a minimal distance 112a around the outer edge 110a of the bulge 88a, free of dispensing openings 54a and / or with at least substantially closed outer surfaces, the minimal distance 112a at least 5%, preferably at least 8% and preferably at least 10 %, of a maximum transverse extension 114a of the curvature 88a, which is in particular aligned at least substantially perpendicular to the central axis 58a of the media output element 40a and / or at least substantially parallel to the main extension plane 56a of the media output element 40a.
  • the maximum transverse extent 114a of the curvature 88a preferably corresponds to a value from a value range between 3 mm and 7 mm, preferably between 4 mm and 6 mm and preferably between 5 mm and 5.5 mm.
  • the maximum transverse extent 114a particularly preferably corresponds to at least substantially 5.3 mm.
  • the media transfer element 46a preferably has at least one transfer surface for contact with the media output element 40a (in Figure 3 Not shown). It is conceivable that the transfer surface has a curvature in at least one partial area, which in particular is designed to correspond to the curvature 88a of the media output element 40a, and / or at least partially has a curved basic shape.
  • a maximum height 116a preferably corresponds to the curvature 88a, which in particular is at least substantially parallel to the central axis 58a of the media output element 40a and / or at least substantially perpendicular to the Main extension plane 56a of the media output element 40a is aligned, a value from a value range between 0.05 mm and 1 mm, preferably between 0.25 mm and 0.8 mm and particularly preferably between 0.4 mm and 0.65 mm.
  • the maximum height 116a is, in particular in the Figure 3 curvature 88a shown, at least substantially 0.65 mm.
  • the maximum height 116a of the curvature 88a extends from the output surface 66a in the edge region 110a of the media output element 40a at least substantially parallel to the central axis 58a of the media output element 40a up to an apex 118a of the curvature 88a, which is within the output surface 66a and on the central axis 58a of the media output element 40a is arranged.
  • the manufacturing tolerances of the abovementioned dimensional information, in particular the radius, the height, the transverse extent, etc., to the media output element 40a, in particular the curvature 88a are at most 0.02 mm.
  • configurations of the media output element 40a with a planar output surface 66a are also conceivable, the media output element 40a in particular not having any curvature 88a.
  • the output surface 66a at least partially delimits the output openings 54a, the output surface 66a being at least essentially liquid-repellent, the output surface 66a being at least partially arranged in the region of the curvature 88a of the media output element 40a.
  • the output surface 66a is preferably designed to be hydrophobic with respect to the medium, a hydrophobic effect being observed in particular when the medium comes into contact with the output surface 66a.
  • the dispensing surface 66a is at least substantially completely at least substantially liquid-repellent.
  • the dispensing surface 66a is at least substantially liquid-repellent at least within the dispensing area 62a.
  • the receiving surface 68a is designed to be at least essentially liquid-repellent.
  • the inner surfaces of the media output element 40a delimiting the output openings 54a are designed to be at least essentially liquid-repellent.
  • the discharge openings 54a are at least partially frustoconical.
  • the inner surfaces of the media output element 40a delimiting the output openings 54a are at least partially oblique to the central axis 58a of the media output element 40a and / or the output openings 54a and to the main extension plane 56a of the media output element 40a.
  • the dispensing openings 54a are each only partially frustoconical along the central axes of the dispensing openings 54a and have a basic shape different from a truncated cone, in particular cylindrical, in particular in at least a partial area along the central axes of the dispensing openings 54a.
  • the dispensing openings 54a have a larger cross-sectional area on a side delimited by the receiving area 68a than on a side delimited by the dispensing area 66a.
  • configurations of the media output element 40a without a bulge 88a are also conceivable, preferably for printing the medium.
  • the media output element 40a is designed to be at least essentially planar.
  • the media output element 40a formed with a curvature 88a is preferably provided for spraying the medium.
  • FIG 4 there is shown an output pattern 178a of a medium formed as a color by the media output element 40a of the media output device 12a.
  • the output openings 54a are arranged in a plurality of concentric circles 120a around the central axis 58a of the media output element 40a and / or the output region 62a.
  • the minimum distance 86a between the individual dispensing openings 54a is at least substantially 150 ⁇ m.
  • a minimum distance 122a of the individual concentric circles 120a directed at least substantially perpendicular to the central axis 58a of the media output element 40a and to the central axis 58a is preferably between 150 ⁇ m and 200 ⁇ m.
  • the output openings 54a in particular all of the output openings 54a delimited by the media output element 40a, are arranged within an annular surface 124a on the media output element 40a (see also FIG Figure 3 ).
  • other configurations of the media output element 40a are also conceivable, for example with a minimum distance 86a of the output openings 54a other than 150 ⁇ m.
  • the output pattern 178a is detected at a distance from the output surface 66a, whereby in particular the in Figure 4
  • the ratios and spacings shown do not exactly match an arrangement of the output openings 54a on the media output element 40a.
  • the control and / or regulating unit 48a is set up to use the control parameter to form the point at a position, in particular on the surface 26a, within less than 20 mm, preferably less than 15 mm and preferably less than 13 mm from the Adapt media output element 40a.
  • the media output device 12a and / or the media application system 10a is preferably provided to be arranged at a minimum distance 126a of at most 20 mm, preferably at most 15 mm and preferably at most 13 mm, to the surface 26a for outputting the resolution-optimized point (see FIG Figure 1 ).
  • the control and / or regulating unit 48a is particularly preferably set up to adapt the control parameters in such a way that the resolution-optimized point is formed on the surface 26a by the medium outputted, in particular paint, by means of the media output element 40a, in particular the minimum distance 126a of the media output element 40a to the surface 26a is at most 20 mm, preferably at most 15 mm and preferably at most 13 mm.
  • configurations of the media output device 12a, in particular the control and / or regulating unit 48a without a dependency of the control parameters of the actuator elements 44a, 46a on a minimum distance from the surface 26a, for example when the medium is sprayed, are also conceivable.
  • Figure 5 shows exemplary measurements 132a, 134a, 136a, 138a of a speed of the media output element 40a in a direction at least substantially parallel to the central axis 58a of the media output element 40a when excited by the actuator elements 44a, 46a as a function of a distance from the central axis 58a of the media output element 40a.
  • An abscissa 128a indicates the distance of a point of the media output element 40a from the central axis 58a of the media output element 40a in a plane of section through the central axis 58a, a zero point lying on the central axis 58a.
  • An ordinate 130a indicates a speed of the respective point of the media output element 40a in the at least substantially parallel to the central axis 58a of the media output element 40a aligned direction.
  • a first measurement 132a shows the speed of the media output element 40a at a value of the excitation parameter embodied as the current amplitude of the electrical and / or electronic signal of 50 mA.
  • a second measurement 134a shows the speed of the media output element 40a at a value of the excitation parameter embodied as the current amplitude of the electrical and / or electronic signal of 100 mA.
  • a third measurement 136a shows the speed of the media output element 40a at a value of the excitation parameter embodied as the current amplitude of the electrical and / or electronic signal of 150 mA.
  • a fourth measurement 138a shows the speed of the media output element 40a at a value of the excitation parameter embodied as the current amplitude of the electrical and / or electronic signal of 200 mA. In particular, regions of the media output element 40a that oscillate out of phase are also shown positively.
  • the media output element 40a executes concentric vibrations, in particular similar to vibrations of a bending beam, about the central axis 58a of the media output element 40a.
  • each shows three measurements of an admittance and a phase angle of a system of media output element 40a and actuator elements 44a, 46a for excitation of media output element 40a at three different degrees of attenuation.
  • the abscissas 140a of the graphs shown each indicate a frequency, in particular the excitation frequency.
  • Ordinates 142a of the graphs shown each indicate the admittance or the phase angle of the system.
  • An upper graph shows measurements of the admittance in each case.
  • a lower graph shows measurements of the phase angle in each case.
  • a first measurement 144a of the admittance and the phase angle shows an undamped state of the system.
  • a maximum 146a of the admittance and a zero crossing 148a of the phase angle of the first measurement 144a are arranged together at a value of the frequency which in particular corresponds to the resonance frequency of the system, which is 106.6 kHz, for example.
  • a second measurement 150a of the admittance and phase angle shows a damped state of the system.
  • a maximum 152a of the admittance and a zero crossing 154a of the phase angle of the second measurement 150a are arranged shifted from one another at different values of the frequency, in particular the Zero crossing 154a of the phase angle, preferably by means of the control and / or regulating unit 48a, can still be determined.
  • the maximum 152a of the admittance of the second measurement 150a is arranged at a frequency of at least essentially 102 kHz, the zero crossing 154a of the phase angle of the second measurement 150a being arranged at at least essentially 104 kHz.
  • a third measurement 156a of admittance and phase angle shows a heavily attenuated state of the system.
  • a maximum 158a of the admittance and a zero crossing of the phase angle of the third measurement 156a are shifted further from one another than in the second measurement 150a, wherein in particular the zero crossing of the phase angle can no longer be determined, preferably by means of the control and / or regulating unit 48a.
  • the control and / or regulating unit 48a is set up, in particular in at least one operating state and / or the heavily damped system, a resonance frequency of the media output element 40a as a function of a minimum 162a of a phase angle, in particular the third measurement 156a, of an oscillation of the media output element 40a to determine and to adapt the control parameters depending on the resonance frequency.
  • FIG 7 an exemplary sequence of a method 164a for a targeted output of the medium by means of the media output device 12a and / or for an operation of the media output device 12a is shown.
  • actuator elements 44a, 46a are activated by means of control and / or regulating unit 48a to excite media output element 40a.
  • the media output element 40a performs at least one oscillation, the medium being picked up by the media transfer unit 44a and being applied to the surface 26a in the output direction 82a, in particular in the form of a point.
  • an electric current, an electric voltage and a phase angle of the actuator elements 44a, 46a and / or the media output element 40a are detected by means of the control and / or regulating unit 48a, in particular the detection element 50a.
  • at least one control parameter is used to control media output element 40a of media output device 12a via actuator elements 44a, 46a of media output device 12a by means of control and / or regulating unit 48a of the media output device 12a with regard to the formation of the resolution-optimized point by means of the output medium, in particular dynamically.
  • the control parameter is preferably adapted as a function of the detected values of the electrical current, the electrical voltage and / or the phase angle.
  • the output by means of the media output device 12a takes place, in particular in method step 166a of the method 164a, using a medium which, in particular under standard conditions, has a viscosity function that has a value between 2 mPas and 40 mPas, preferably between 4 mPas ⁇ S and 25 mPa ⁇ s and preferably between 5 mPa ⁇ s and 13 mPa ⁇ s.
  • the output by means of the media output device 12a takes place, in particular in method step 166a of method 164a, using a medium which, at a temperature between 5 ° C and 50 ° C, in particular at room temperature, has a dynamic surface tension that has a value between 30 mN / m and 62 mN / m.
  • FIG 8 an alternative embodiment of a media output device 12b for a media application system 10b is shown.
  • the media output device 12b comprises a media output element 40b, which is provided to be excited to vibrate for a targeted output of a medium.
  • the media output element 40b is provided to be excited by means of at least one actuator element 44b, 46b (in Figure 8 not shown), which rests against the media output element 40b.
  • the media output element 40b delimits a multiplicity of output openings 54b, which are arranged in an at least substantially concentric arrangement, in particular on a circular ring, around a central axis 58b of the media output element 40b are arranged.
  • the media output element 40b has in an unexcited state, which in the Figure 8 is shown, a curvature 88b, the output openings 54b, in particular all of the output openings 54b delimited by the media output element 40b, being arranged in the region of the curvature 88b.
  • the media output device 12b comprises a control and / or regulating unit 48b (in Figure 8 not shown) for controlling the actuator element 44b, 46b.
  • the control and / or regulating unit 48b is set up to adapt at least one control parameter of the actuator element 44b, 46b with regard to the formation of a resolution-optimized point by means of the output medium, in particular dynamically.
  • the media output device 12b shown has an at least substantially analogous configuration to that in the description of FIG Figures 1 to 7 media output device 12a described, so that with respect to an embodiment of the in the Figure 8 media output device 12b shown at least essentially to the description of the Figures 1 to 7 can be referenced.
  • the media output device 12a described has the media output element 40b in FIG Figure 8 media output device 12b shown, preferably in the region of the curvature 88b in at least one sectional plane arranged at least substantially parallel to the central axis 58b of the media output element 40b, viewed a parabolic contour 90b.
  • the cutting plane is preferably arranged in such a way that the cutting plane includes the central axis 58b of the media output element 40b.
  • a vertex 118b of the parabolic contour 90b is preferably arranged on the central axis 58b of the media output element 40b.
  • the parabolic contour 90b has, in particular straight, legs 172b that span a maximum angle 108b of at most 45 °, preferably at most 35 ° and preferably at most 30 °, in an edge region of the curvature 88b with a main extension plane 56b of the media output element 40b.
  • the angle 108b between the parabolic contour 90b, in particular the legs 172b, in the edge region of the curvature 88b and the main extension plane 56b of the media output element 40b is at least substantially 25.7 °.
  • a maximum transverse extent 114b of the curvature 88b, in particular at least substantially perpendicular to the central axis 58b of the media output element 40b, is preferably at least substantially 5.28 mm.
  • a maximum height 116b of the bulge 88b, from a flat edge region 100b of the media output element 40b to the apex 118b of the bulge 88b, is at least essentially 1 mm.
  • the parabolic contour 90b preferably has, in particular at a distance from the legs 172b, a coupling section 174b which is arranged centrally on the central axis 58b of the media output element 40b.
  • the coupling section 174b is preferably designed in the shape of a circular arc and has a radius 176b of at least substantially 2.45 mm.
  • other configurations of the media output element 40b, in particular the parabolic contour 90b are also conceivable.
  • the manufacturing tolerances of the abovementioned dimensional information, in particular the radius, the height, the transverse extent, etc., to the media output element 40b, in particular the curvature 88b are at most 0.02 mm.
  • an output pattern 178c of a medium in the form of paint is shown, which was generated by means of a further alternative embodiment of a media output device 12c for a media application system 10c.
  • the output pattern 178c is detected at a distance from the output surface, whereby in particular the in Figure 9
  • the ratios and spacings shown do not exactly match an arrangement of the output openings 54c on the media output element 40c.
  • the media output device 12c includes a media output element 40c (in Figure 9 not shown), which is intended to be excited to oscillate for a targeted output of a medium.
  • the media output element 40c is provided to be excited by means of an actuator element 44c, 46c (in Figure 9 not shown), which rests against the media output element 40c.
  • the media output element 40c defines a plurality of output openings 54c.
  • the media output device 12c generating the output pattern 178c shown has an embodiment that is at least substantially analogous to that in the description of FIG Figures 1 to 7 media output device 12a described, so that with regard to an embodiment of the Figure 9 media output device 12c described at least essentially to the description of Figures 1 to 7 can be referenced.
  • media output device 12a described are the output elements of the Figure 9 media output device described 12c, preferably arranged in a plurality of juxtaposed quincunx arrangements 180c around a central axis 58c of the media output element 40c.
  • a minimum distance 86c between the individual output openings 54c is at least substantially 150 ⁇ m.
  • other configurations of the media output element 40c are also conceivable, for example with a minimum distance 86c between the output openings 54c other than 150 ⁇ m.
  • the output openings 54c, in particular all of the output openings 54c delimited by the media output element 40c, are arranged within an output surface 66c on the media output element 40c (in FIG Figure 9 Not shown).

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EP21162899.5A 2020-03-30 2021-03-16 Dispositif de distribution de fluide et procédé de fonctionnement d'un dispositif de distribution de fluide Pending EP3888801A1 (fr)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
US20130277446A1 (en) * 2010-08-11 2013-10-24 The Technology Partnership Plc. Electronic spray device improvements
WO2019063408A1 (fr) * 2017-09-27 2019-04-04 Dürr Systems Ag Applicateur pourvu d'un circuit de commande intégré
US20190232322A1 (en) * 2018-01-30 2019-08-01 Ford Motor Company Composite ultrasonic material applicators with individually addressable micro-applicators and methods of use thereof

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Publication number Priority date Publication date Assignee Title
DE102009027743A1 (de) 2009-07-15 2011-01-27 Robert Bosch Gmbh Farbauftragsvorrichtung mit Beschleunigungssensor
DE102012113124A1 (de) 2012-12-27 2014-07-03 Ev Group E. Thallner Gmbh Sprühdüseneinrichtung und Verfahren zum Beschichten
GB201510166D0 (en) 2015-06-11 2015-07-29 The Technology Partnership Plc Spray delivery device
DE102018220409A1 (de) 2017-12-06 2019-06-06 Robert Bosch Gmbh Medienauftragsvorrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130277446A1 (en) * 2010-08-11 2013-10-24 The Technology Partnership Plc. Electronic spray device improvements
WO2019063408A1 (fr) * 2017-09-27 2019-04-04 Dürr Systems Ag Applicateur pourvu d'un circuit de commande intégré
US20190232322A1 (en) * 2018-01-30 2019-08-01 Ford Motor Company Composite ultrasonic material applicators with individually addressable micro-applicators and methods of use thereof

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