US20030000773A1 - Additive nebulising device - Google Patents

Additive nebulising device Download PDF

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Publication number
US20030000773A1
US20030000773A1 US10/181,618 US18161802A US2003000773A1 US 20030000773 A1 US20030000773 A1 US 20030000773A1 US 18161802 A US18161802 A US 18161802A US 2003000773 A1 US2003000773 A1 US 2003000773A1
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United States
Prior art keywords
additive
pressure medium
duct
atomizing device
pressure
Prior art date
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Abandoned
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US10/181,618
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English (en)
Inventor
Wolfgang Engler
Manfred Zindl
Michael Sonn
Michael Berner
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Festo SE and Co KG
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Festo SE and Co KG
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Assigned to FESTO AG & CO. reassignment FESTO AG & CO. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SONN, MICHAEL, ZINDL, MANFRED, BERNER, MICHAEL, ENGLER, WOLFGANG
Publication of US20030000773A1 publication Critical patent/US20030000773A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2497—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device several liquids from different sources being supplied to the discharge device
    • 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
    • B05B12/085—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 flow or pressure of liquid or other fluent material to be discharged
    • 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
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B05B12/1427—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet a condition of a first liquid or other fluent material in a first supply line controlling a condition of a second one in a second supply line
    • 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
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B05B12/1427—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet a condition of a first liquid or other fluent material in a first supply line controlling a condition of a second one in a second supply line
    • B05B12/1436—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet a condition of a first liquid or other fluent material in a first supply line controlling a condition of a second one in a second supply line the controlling condition of the first liquid or other fluent material in the first supply line being its flow rate or its pressure
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0075—Nozzle arrangements in gas streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2494—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device a liquid being supplied from a pressurized or compressible container to the discharge device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
    • F16N7/32—Mist lubrication
    • F16N7/34—Atomising devices for oil

Definitions

  • the invention relates to an additive atomizing device for the atomization of a liquid additive, and more particularly of a lubricant, in a gaseous pressure medium, more particularly compressed air, comprising at least one injection head, which has at least one additive passage duct, which has an inlet for the supply of the additive from an additive supply means and whose outlet opens into a pressure medium flow duct, through which the pressure medium flows.
  • the invention furthermore relates to a fluid technology means, for instance in the form of a valve or a drive, a material preparing means, as for instance an oiler, a cartridge-like additive supply means for an additive atomizing device and furthermore a method for the, atomization of a liquid additive, and more especially a lubricant in a gaseous pressure medium.
  • a fluid technology means for instance in the form of a valve or a drive
  • a material preparing means as for instance an oiler
  • a cartridge-like additive supply means for an additive atomizing device furthermore a method for the, atomization of a liquid additive, and more especially a lubricant in a gaseous pressure medium.
  • the pneumatic elements of the system are supplied by one or more so-called compressed air oilers with lubricant.
  • These lubricants must serve to provide for a low wear rate of the moving parts, to keep frictional forces in the elements at a low level and to protect the equipment against corrosion.
  • Compressed air oilers normally use the venturi principle. In this case the compressed air is caused to pass through a constriction in the compressed air duct. At such constriction there is an outlet from a thin tube, which dips into a container for oil or some other additive. Owing to the pressure difference between the pressure upstream from the constriction and the pressure at the smallest cross section of the constriction the oil is drawn from the container mixed with air.
  • Such a compressed air oiler is described in the book “Pneumatische Steuer Institute” by Werner Depert and Kurt Stoll, 10th edition 1994, ISDN 3-8023-1549-9, pages 43 and 44.
  • a problem in connection with such compressed air oilers is that the compressed air oiler only starts to operate when a sufficiently large flow is present. In the case of an excessively small removal of air the flow velocity at the nozzle is nolonger sufficient to produce a sufficient vacuum and accordingly to draw oil from the container. Furthermore, the designer is bound to the oil pumping characteristic, that is to say to the oil pumping rate as dependent on the air flow rate, of the device, which cannot be changed. Oil metering adaptable to the different pneumatic elements is therefore hardly possible.
  • a further disadvantage of such compressed air oilers is the great temperature dependence of the oiling action owing to the changes in viscosity in the oil in a manner dependent on the respective temperature.
  • one object of the invention is to distribute an additive and more especially a lubricant, in a gaseous pressure medium, more particularly compressed air with an optimum possibility of adjustment.
  • the pressure medium passage duct is provided with a detecting means for determining at least one physical characteristic, which can be passed by the detecting means by way of a signalizing means to a control means and a pressure producing device is provided in the at least one additive passage duct, it being possible for a pressure pulse to be exerted on the additive by the pressure producing device so that a drop of additive is expelled at the outlet, such pressure producing device being arranged to be controlled by way of a control connection by the control means in a manner dependent on the at least one physical characteristic as found by the detecting means.
  • the object is furthermore to be achieved by a fluid technology means in accordance with the technical teaching of claim 15, by a material preparing unit in accordance with the technical teaching of claim 17, by a cartridge-like additive supply means in accordance with the technical teaching of claim 18 and by a method in accordance with the technical teaching of 19.
  • an additive is not atomized by an entraining effect of compressed air but by injection using a pressure producing device.
  • This pressure producing device is able to be controlled by a control means, which controls the pressure producing device in a fashion dependent on the physical characteristic, as for instance the instantaneous flow rate of the pressure medium in the pressure medium flow duct or on the concentration of the additive in the pressure medium.
  • a control means which controls the pressure producing device in a fashion dependent on the physical characteristic, as for instance the instantaneous flow rate of the pressure medium in the pressure medium flow duct or on the concentration of the additive in the pressure medium.
  • piezoelectric, magnetostrictive, or memory-metallic element for the pressure producing device it is possible for instance to employ piezoelectric, magnetostrictive, or memory-metallic element. Same may for example be in the form of a diaphragm or blade and subject the additive to a pressure pulse in the additive passage duct. Combinations of the above mentioned materials are also possible.
  • the pressure producing device comprises a blade selected from the above mentioned materials.
  • a blade is then for example designed in the form of a flexural transducer, which pumps the additive toward the outlet.
  • the flexural transducer may be so designed that it closes the outlet in the neutral position.
  • the flexural transducer is biassed accordingly or is moved into the a position closing the outlet by an electrical neutral voltage, a magnetic field or a constant temperature.
  • the pressure producing device may however also operate in accordance with an evaporation principle, in the case of which either a vapor bubble is formed in the additive or in a working liquid, as for instance water, by a heating element subject to a pulse.
  • the vapor bubble then thrusts the additive toward the outlet.
  • a working liquid is utilized, same is separated by a diaphragm from the additive in the additive passage duct. It is then not necessary to take into the chemical and physical quality of the additive as regards the formation of vapor bubbles.
  • An other preferred feature is such that the additive is so conditioned by heating—or cooling—that it possesses an optimum consistency in the additive passage ducts or in the case of injection into the pressure medium as well. It is convenient for the additive then to be heated at the respective additive passage duct so that the pressure producing device develops an optimum action. For sensing and then controlling the temperature it is possible in addition for a sensor to be arranged in the respective additive passage duct. It is however possible also for the entire additive atomizing device as a whole to be heated or cooled. The additive atomizing device is then preferably insulated from the surroundings by an insulating casing.
  • the additive is preferably supplied from cartridge-like, replaceable containers.
  • several such containers may be connected with a common supply line.
  • an injection head which together with the container is mounted on the respective additive atomizing device.
  • the injection head as well, which is subject to a certain amount of corrosion or wear by the additive or may be at least partly blocked by the additive, to be replaced together with the container in an extremely simple fashion.
  • the additive supply device is, in accordance with preferred form of the invention, supplied with the pressure medium from the pressure medium flow duct at the inlet. It is however also possible to feed the additive into the additive passage duct simply by the pressure of the surroundings, acting on the additive supply means, from the supply means.
  • the additive passage duct can also be so designed, at least in part thereof, as a capillary so that owing to the capillary action additive is drawn from the additive supply means into the additive passage duct.
  • the additive atomizing device may be made extremely compact, it is also possible to incorporate it directly in a fluid technology means, for example in the form of a valve or a drive. It may however also be incorporated in a material preparing unit, as for instance in an oiler for a pneumatic system.
  • control means may directly integrated in the additive atomizing device or in a component group comprising the additive atomizing device. It is for instance possible as well, however, for the control means to be formed centrally, for instance in the form of a microprocessor control system, which controls several additive atomizing devices. It is also possible for a small microprocessor, controlling same, to be provided for each additive atomizing device, such microprocessor being under the control of a higher order control, for instance by way of a field bus. Using this high order control it is then for example possible to accurately set, for example, the additive concentration in the pressure medium and to check any additive concentration already present, for example using a display.
  • FIG. 1 diagrammatically shows a first working example of an additive atomizing device in accordance with the invention.
  • FIG. 2A shows a additive passage duct in the form of a chamber with a blade as an actuator.
  • FIG. 2A shows a passage duct as in FIG. 2A, in the case of which the blade closes outlet openings of the additive passage duct.
  • FIG. 3 shows an additive passage duct in the form of a capillary with a heating element.
  • FIG. 4 diagrammatically shows a working example of an injection head with a cartridge connected with it.
  • FIG. 5 shows a working example similar to that of FIG. 1 having an additive atomizing device in accordance with the invention but however with separate additive supply means, each provided with an injection head.
  • FIG. 1 shows an additive atomizing device having a pressure medium flow duct 10 , which is delimited by a wall 11 .
  • the pressure medium flow duct 10 carries gaseous pressure medium, more particularly compressed air, flowing in the direction of the arrow 13 .
  • the pressure medium flow duct is for example a component of a servicing device for pneumatic systems, as for instance an oiler, or is part of a fluid technology means, as for example in the form of a valve or a drive.
  • the pressure medium then flows in the direction 13 of the arrow to one or more such valves or drives.
  • the pressure medium flow duct 10 possesses a constriction 14 which is formed by a baffle-like bay 15 , which is located in the wall 11 . Owing to the constriction 14 there is a pressure gradient in the flow duct 10 , which is measured by a detecting means in the form of pressure sensors 17 and 18 .
  • the sensors 17 and 18 are respectively joined by a connection 19 and 20 with a control means 21 .
  • the connections 19 and, respectively, 20 are signalizing means and may for example be in the form of line, radio link or infrared connections.
  • the control means 21 is for example a microprocessor or an analog regulating means.
  • the control means 21 can find out how great the instantaneous flow rate of the pressure medium through the pressure medium flow duct 10 is.
  • an electric generator, driven by the pressure medium, or a heating filament element could be arranged in the pressure medium flow duct 10 for measuring the flow rate.
  • the control means 21 is furthermore joined with an injection head 22 by way of a connection 23 .
  • the connection 23 can also be a line, a radio link or an infrared connection.
  • the injection head 22 possesses three parallel additive passage ducts 24 . It is however also possible for the injection head 22 to possess only one additive passage duct or a plurality of additive passage ducts.
  • the additive passage ducts 24 respectively have an outlet 25 .
  • the additive passage ducts 24 are joined with a supply line 26 , which leads to additive supply containers 27 , 28 , 19 and 30 .
  • the supply containers are preferably designed in the form of replaceable cartridges and may be plugged or screwed on the supply line 26 using flanges, not illustrated in FIG. 1.
  • Additive as for example oil, passes from the supply containers 27 through 30 by way of the supply line 26 into the additive passage ducts 24 .
  • a central additive supply means could also be provided, which in addition to the additive atomizing devices illustrated in FIG. 1 would supply other additive atomizing devices as well.
  • the additive passage ducts 24 there are respective pressure producing devices, which will be explained in detail with reference to FIGS. 2A, 2B and 3 .
  • a respective pressure pulse is exerted on the additive in the respective additive passage duct 24 by the pressure producing devices so that for each pressure pulse one drop of additive is expelled into the pressure medium flow duct 10 at the respective outlet 25 .
  • the additive drops are indicated in the drawing with a collective index 31 .
  • the additive drops 31 After leaving the outlets 25 the additive drops 31 are directed by a baffle means, which in FIG. 1 is a baffle plate 32 , in the pressure medium flow duct 10 in the direction 13 of the arrow and distributed in the pressure medium.
  • a supply line 33 which pressure medium enters by way of an opening 34 , the additive supply containers 27 through 30 are subjected to pressure medium so that the additive is forced out of the supply containers 27 through 30 into the supply line 26 and accordingly into the additive passage ducts 24 .
  • Such an arrangement for the supply of additive can be termed pseudo isobaric, because the factors in the flow duct 10 directly act on the additive supply. It is also possible for a pressure reducing means to be provided on the supply line 33 . Furthermore, it is possible for the supply line 33 not to open into the flow duct 10 but into the surroundings so that additive will be forced by the pressure of the surroundings into the supply line 26 from the supply containers 27 through 30 .
  • the pressure producing devices in the additive passage ducts 24 are controlled by the control means 21 by way of connection 23 and connections, not illustrated, located within the injection head 22 .
  • the control means 21 evaluates the data from the sensors 17 and 18 .
  • the sensors 17 and 18 are for instance pressure sensors, a pressure gradient will be produced between these sensors during flow through the flow duct 10 of pressure medium, and from such pressure gradient the control means 21 finds the instantaneous flow rate in the pressure medium flow duct 10 . If the flow rate is great, the requirement for additive to be injected in the flow duct 10 will also be large and the control means 21 will so control pressure producing devices in the additive passage ducts 24 that same inject numerous drops of additive in the flow duct 10 . In this case the control means 21 will for instance apply high frequency voltage pulses to the pressure producing device.
  • control means 21 it is also possible for the control means 21 to be instructed by a higher order control, represented by an arrow 35 , to produce a certain concentration of additive into the flow duct 10 . Furthermore it is also possible for a local lower order control to be integrated in the injection head 22 , which controls the respective pressure producing devices locally in a manner dependent on commands, which are provided by the control means 21 .
  • FIG. 1 furthermore shows a heating means 36 which is indicated in the form of a heating spiral diagrammatically.
  • the heating spiral acts on the supply line 26 and heats the additive in the supply line 26 so that a certain viscosity of the additive may be set in the additive passage ducts 24 or the flow duct 10 .
  • a cooling means to be arranged on the supply line 26 instead of the heating means 36 or in addition to it, in order to lower the temperature of the additive in the supply line and thus produce a certain viscosity of the additive.
  • the heating means or the cooling means 36 as well may be arranged directly inside the injection head 21 , preferably near the additive passage ducts 24 so that adjacent to the outlets 25 the desired viscosity of the additive is ensured.
  • temperature sensors are provided in the vicinity of the additive passage ducts and as near as possible to the outlets 25 , such sensors rendering possible regulation to get to the desired temperature.
  • the heating means or, respectively, cooling means 36 can be controlled by the control means 21 .
  • the temperature sensors may be connected in the vicinity of the injection head 22 with the control means 21 .
  • the injection head 22 or even the entire additive atomizing device illustrated in FIG. 1 is arranged in a housing thermally insulated from the outside.
  • FIGS. 2A and 2B the following will describe one example of a design of an additive passage duct, as for instance an additive passage duct 24 of the injection head 22 as in FIG. 1.
  • the additive the passage duct 24 is illustrated in the form a chamber, which is constituted respectively by wall parts 37 , 38 , 39 and 40 having an L-like cross section. Between the wall parts 37 and 38 there is an inlet 41 through which the additive passes from an additive supply line, not illustrated, and for instance the supply line 26 , to the additive passage duct 24 .
  • an overflow 42 is delimited, by way of which excess additive may flow out of the additive passage duct 24 into an overflow region, not illustrated.
  • the wall parts 38 and 39 hold a blade 43 , which is made in two layers of piezoelectric material.
  • the blade 43 has electrical contact elements 44 and 45 , to which a voltage may be applied, f. i. by the control means 21 . If such a voltage is applied, the blade 43 will deform.
  • a voltage may be applied, f. i. by the control means 21 . If such a voltage is applied, the blade 43 will deform.
  • the outlet 25 and in the working examples of FIGS. 2A and 2B is in the form of a group of nozzles with a plurality of closely adjacently outlet openings.
  • the additive passage duct 24 is delimited by walls, not illustrated in FIGS. 2A and 2B. It is also possible for several additive passage ducts 24 to be arranged one after the other, to be supplied by a common inlet 41 with additive and to have a common overflow 42 , one respective blade 43 acting on a output 25 with respectively one nozzle group.
  • the blade 43 By the brief application of voltage to the electrical contact elements 44 and 45 and by the following short circuiting of the electrical contact elements the blade 43 will be caused to perform a paddling movement in relation to the outlet 25 so that very fine drops or droplets of additive will be formed at the outlet 25 in a manner dependent of the frequency and size of the voltage at the elements 44 and 45 and such drops will be injected into the pressure medium flow duct 10 .
  • the blade 43 it is possible for the blade 43 to be shifted away from the outlet 25 or toward it out of the position illustrated in FIG. 2A by the application of voltage to the electrical contact elements 44 and 45 .
  • a square pulse is f. i. suitable, so that during the rise of the leading edge of the pulse the blade will be moved away from the output 25 and during its constant level phase the blade will be held for a short time in the position remote from the outlet 25 , while corresponding to the trailing edge of the pulse the blade will swing toward the outlet 25 .
  • the basic square signal of the voltage pulse can be modified in the following manner for metering the additive at the outlet 25 :
  • pulsed operation packets of identical square pulses, which are generated with the same frequency, are applied to the blade 43 .
  • the number of the square pulses in a packet or the intervals between the respective packets it is possible to control the quantity of additive leaving by way of outlet 25 .
  • pulse width modulation the additive metering rate at the outlet 25 is controlled by changing the width of the square pulses. It is also possible to vary the time interval between square pulses. Modulation forms in the case of which both the width of the square pulse and also the intervals between same are varied are also possible.
  • Hybrid forms of the above mentioned types of modulation and of pulsed operation are just as possible as other forms of influencing the square pulses.
  • FIG. 2A shows the blade 43 in the resting or neutral position.
  • a negative voltage must be applied to the electrical contact elements 44 and 45 to deflect the blade 43 toward the outlet 25 till it makes contact. This condition is illustrated in FIG. 2B.
  • the blade 43 could also be so mechanically biased that, as indicated in FIG. 2B, it contacts the outlet 25 in the neutral position.
  • the blade 43 must therefore be operated with an offset voltage, which prevents impact of the blade 43 against outlet 25 during operation. In the center position of the swinging motion the blade is then moved clear of the outlet 25 .
  • the additive passage duct 24 and an injection head which comprises such an additive passage duct, may be made extremely compact, namely of the order of size of some micrometers. Accordingly it is possible to directly incorporate the additive passage duct 24 in a fluid technology device, as for example a pneumatic cylinder. Thus additive may always be supplied to the pneumatic cylinder in a systematic manner at the start of its working stroke. Even incorporation in a microvalve arrangement would readily be possible.
  • FIG. 3 shows a still further possible working embodiment of the additive passage duct 24 and of a pressure producing device.
  • the additive passage duct 24 is an elongated and preferably capillary duct from which in the direction 46 additive is supplied, for instance from the supply line 26 .
  • a heating resistor 47 to which by way of electrical contact elements 44 and 45 as in FIGS. 2A and 2B square pulses may be applied by the control means 21 .
  • Such a square pulse will heat the resistor 47 for a short time so that a vapor bubble 48 will be formed in the additive and an additive drop 50 will be ejected in the direction 49 from the outlet 25 .
  • the resistor 47 will cool down again so that the vapor bubble present in the additive passage duct 24 will condense again.
  • additive will be drawn by the capillary effect of the additive passage duct 24 from the direction 46 into the additive passage duct 24 .
  • a working fluid such as water
  • a working fluid such as water
  • a working fluid such as water
  • a working fluid such as water
  • the heating resistor 47 If the water is heated for a short time by the heating resistor 47 a vapor bubble will form, which stretches the diaphragm and causes expulsion of the drop 50 of additive.
  • the physical properties of the additive are irrelevant, since production of the vapor bubble is only dependent on the quality of the working fluid.
  • the heating resistor can not be damaged by chemical or physical action of the additive.
  • FIG. 4 shows the injection head 22 directly, that is to say without an intermediately placed supply line 26 , connected with a cartridge-like supply container 51 , which is filled with additive.
  • An inlet 52 of an additive supply duct 53 opens into the supply container 51 to supply additive passage ducts 24 , of which in the example of FIG. 4 there are three arranged in parallelism in the injection head 22 .
  • Outlets 25 of the additive passage ducts 24 open into a pressure medium flow duct not illustrated in the figure.
  • the injection head 22 may be either joined in a fixed manner, for example by bonding, to the container 51 or may be detachable, there then being for instance a screw or bayonet joint.
  • the additive passage ducts 24 there is a respective heating resistor 47 , as already described in connection with FIG. 3, with which a vapor bubble may be produced in the respective additive passage ducts 24 .
  • piezoelectric, magnetostrictive or memory metallic blades or diaphragms may be arranged in the respective additive passage ducts 24 as pressure producing devices.
  • Connection lines 54 run from the heating resistors 47 to the electrical contact elements 55 , with which for instance the connection line 23 for the control means 21 may be connected.
  • the injection head 22 has a screw thread 56 for screwing into the wall of a pressure medium flow duct, for example into the wall 11 of the pressure medium flow duct 10 .
  • the injection head 22 possesses a sensor 57 , which is connected by way of a connection line 58 with an electrical contact element 59 .
  • the sensor 57 it is for example possible to detect the pressure or temperature in the respective pressure medium flow duct.
  • the electrical contact element 59 the sensor 57 may be joined with the control means 21 .
  • FIG. 5 essentially shows the additive atomizing device as in FIG. 1, in which case however instead of the supply containers 27 through 30 two of the cartridge-like containers 51 a and 51 b , as in FIG. 4, each with an injection 22 a and 22 b , are arranged on the flow duct 10 .
  • the injection heads 22 a and 22 b are respectively illustrated in a highly simplified manner and respectively have only one additive passage duct 24 .
  • heating resistors not separately referenced, or blades for the production of pressure pulses.
  • the pressure producing devices are respectively controlled by way of a connection 60 and, respectively, 61 by the control means 21 .
  • the injection head 22 a is in operation and injects additive into the flow ducts 10 .
  • the injection head 22 b is on standby and may be switched by the control 21 in the case of there being a greater additive requirement in the flow duct 10 .
  • the deflection baffle plate 32 in FIG. 1 may be unnecessary. It is also possible for the additive to be injected perpendicularly to the flow direction 13 of the pressure medium and only be deflected by the flow of the pressure medium and simultaneously distributed in the flow duct 10 .
  • a sensor 62 is arranged in the flow duct 10 , which passes on data by way of a connection 63 to the control means 21 .
  • additive may deposit on the sensor 62 so that the electrical conductivity at the surface of the sensor 62 changes.
  • the sensor 62 can measure this surface resistance and pass it on to the control 21 .
  • the latter finds the respectively current concentration of additive on the basis of the respective resistance value.
  • the control means 21 can therefore so drive the pressure producing devices that there is an even additive concentration in the flow duct 10 .
  • the control means 21 can also be subject to a target value for the additive concentration coming from an external control, for example by way of a field bus connection or a corresponding parametric synthesis.
  • the control means 21 evaluate the flow rate as found by the sensors 17 and 18 , of the pressure medium in the flow duct 10 to provide for suitable control of the pressure producing devices in the injection heads 22 a and 22 b .
  • the sensor 62 or the sensor 52 illustrated in FIG. 4 may also measure the temperature in the flow duct 10 , dependent on which the control means 21 then drives the pressure producing devices.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Lubricants (AREA)
US10/181,618 2000-01-21 2001-01-13 Additive nebulising device Abandoned US20030000773A1 (en)

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DE10002414A DE10002414A1 (de) 2000-01-21 2000-01-21 Additivzerstäubungsvorrichtung
DE10002414.9 2000-01-21

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US (1) US20030000773A1 (ja)
EP (1) EP1248927B1 (ja)
JP (1) JP2003520932A (ja)
AT (1) ATE330166T1 (ja)
DE (2) DE10002414A1 (ja)
WO (1) WO2001053741A1 (ja)

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US20070057083A1 (en) * 2003-10-21 2007-03-15 Detlef Bolz Method for producing an aerosol and injector unit
US20070125883A1 (en) * 2005-12-01 2007-06-07 Cotler Elliot M Lubricator nozzle and emitter element
US20070261922A1 (en) * 2006-01-05 2007-11-15 Sikorsky Aircraft Corporation Secondary lubrication system with injectable additive
GB2443124A (en) * 2003-09-05 2008-04-23 Enventure Global Technology Lubrication vaporizer with electric or magnetic pulse generation
US20090218170A1 (en) * 2008-03-03 2009-09-03 Timothy Andrew Hoffmann Lubrication system
US20100025159A1 (en) * 2007-01-19 2010-02-04 Yuriy Gmirya Lubrication system with prolonged loss of lubricant operation
US8113204B2 (en) 2003-02-13 2012-02-14 Ing. Erich Pfeiffer Gmbh Microdosing device
US8672235B2 (en) 2008-11-18 2014-03-18 Xeda International Device and method for the thermal fogging of a liquid
US20140166772A1 (en) * 2012-12-19 2014-06-19 Dow Agrosciences Llc Mechanical applicator for high viscous materials
CN111940748A (zh) * 2020-09-03 2020-11-17 烟台首钢磁性材料股份有限公司 钕铁硼磁粉混料添加剂的雾化添加装置及添加方法
CN111994322A (zh) * 2020-07-17 2020-11-27 广州穗珩生物技术有限公司 一种平皿培养基添加剂的表面均匀性分布定量灌装技术及设备
CN112007799A (zh) * 2020-07-15 2020-12-01 苏州丽纳芯生物科技有限公司 一种结肠癌检测试纸tc喷涂装置及方法
US10987735B2 (en) 2015-12-16 2021-04-27 6K Inc. Spheroidal titanium metallic powders with custom microstructures
US11448128B2 (en) * 2020-02-10 2022-09-20 Raytheon Technologies Corporation Fluid additive system

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DE10229904A1 (de) * 2002-07-03 2004-01-15 Robert Bosch Gmbh Dosiereinrichtung
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DE102005031770B4 (de) * 2005-07-07 2014-05-28 Rebs Zentralschmiertechnik Gmbh Vorrichtung und Verfahren zum Verteilen von mittels eines Luftstroms geförderten viskosem Schmierstoff
AT507433B1 (de) * 2008-12-15 2010-05-15 Parker Origa Pneumatik Gmbh Druckluftöler
CN101915353B (zh) * 2010-08-31 2012-08-01 东北大学 分布式多级油雾润滑系统
DE102011105647B4 (de) * 2011-06-22 2013-12-24 Heinz Knocks Pneumatische Vorrichtung oder pneumatisches System mit einer Öler-Vorrichtung
JP5905596B2 (ja) * 2013-02-20 2016-04-20 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ 携帯情報端末の制御方法及びプログラム
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US4526191A (en) * 1983-08-30 1985-07-02 Binks Manufacturing Company Fluid supply container for color changer
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* Cited by examiner, † Cited by third party
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US20050199190A1 (en) * 2002-04-19 2005-09-15 Timo Mahlanen Spraying head
US7096829B2 (en) 2002-04-19 2006-08-29 Marioff Corporation Oy Spraying head
WO2003089775A1 (en) * 2002-04-19 2003-10-30 Marioff Corporation Oy Spraying head
US8113204B2 (en) 2003-02-13 2012-02-14 Ing. Erich Pfeiffer Gmbh Microdosing device
GB2443124A (en) * 2003-09-05 2008-04-23 Enventure Global Technology Lubrication vaporizer with electric or magnetic pulse generation
GB2443124B (en) * 2003-09-05 2008-07-02 Enventure Global Technology Expandable tubular
US20070057083A1 (en) * 2003-10-21 2007-03-15 Detlef Bolz Method for producing an aerosol and injector unit
US20070125883A1 (en) * 2005-12-01 2007-06-07 Cotler Elliot M Lubricator nozzle and emitter element
US8074901B2 (en) * 2005-12-01 2011-12-13 Uniwave, Inc. Lubricator nozzle and emitter element
US20070261922A1 (en) * 2006-01-05 2007-11-15 Sikorsky Aircraft Corporation Secondary lubrication system with injectable additive
US8602166B2 (en) * 2006-01-05 2013-12-10 Sikorsky Aircraft Corporation Secondary lubrication system with injectable additive
US20100025159A1 (en) * 2007-01-19 2010-02-04 Yuriy Gmirya Lubrication system with prolonged loss of lubricant operation
US8459413B2 (en) 2007-01-19 2013-06-11 Sirkorsky Aircraft Corporation Lubrication system with prolonged loss of lubricant operation
US7984792B2 (en) * 2008-03-03 2011-07-26 Rolls-Royce Corporation Lubrication system
US20090218170A1 (en) * 2008-03-03 2009-09-03 Timothy Andrew Hoffmann Lubrication system
US8672235B2 (en) 2008-11-18 2014-03-18 Xeda International Device and method for the thermal fogging of a liquid
US20140166772A1 (en) * 2012-12-19 2014-06-19 Dow Agrosciences Llc Mechanical applicator for high viscous materials
US10987735B2 (en) 2015-12-16 2021-04-27 6K Inc. Spheroidal titanium metallic powders with custom microstructures
US11448128B2 (en) * 2020-02-10 2022-09-20 Raytheon Technologies Corporation Fluid additive system
CN112007799A (zh) * 2020-07-15 2020-12-01 苏州丽纳芯生物科技有限公司 一种结肠癌检测试纸tc喷涂装置及方法
CN111994322A (zh) * 2020-07-17 2020-11-27 广州穗珩生物技术有限公司 一种平皿培养基添加剂的表面均匀性分布定量灌装技术及设备
CN111940748A (zh) * 2020-09-03 2020-11-17 烟台首钢磁性材料股份有限公司 钕铁硼磁粉混料添加剂的雾化添加装置及添加方法
US11986836B2 (en) 2020-09-03 2024-05-21 Yantai Dongxing Magnetic Materials Inc. Device and method for the addition of liquid additives in the form of a spray during a jet milling step in a process for the manufacture of sintered NdFeB alloy magnets

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Publication number Publication date
DE10002414A1 (de) 2001-08-09
JP2003520932A (ja) 2003-07-08
WO2001053741A1 (de) 2001-07-26
EP1248927A1 (de) 2002-10-16
EP1248927B1 (de) 2006-06-14
ATE330166T1 (de) 2006-07-15
DE50110151D1 (de) 2006-07-27

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