EP1706210A1 - Dispositif pour fixer un composant fluidique - Google Patents
Dispositif pour fixer un composant fluidiqueInfo
- Publication number
- EP1706210A1 EP1706210A1 EP04804353A EP04804353A EP1706210A1 EP 1706210 A1 EP1706210 A1 EP 1706210A1 EP 04804353 A EP04804353 A EP 04804353A EP 04804353 A EP04804353 A EP 04804353A EP 1706210 A1 EP1706210 A1 EP 1706210A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elastomeric
- holder
- fluidic component
- counterpart
- molded part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000465 moulding Methods 0.000 claims description 51
- 239000012530 fluid Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 4
- 239000000443 aerosol Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000013543 active substance Substances 0.000 claims 2
- 239000003732 agents acting on the eye Substances 0.000 claims 1
- 238000009472 formulation Methods 0.000 claims 1
- 229940023490 ophthalmic product Drugs 0.000 claims 1
- 238000010254 subcutaneous injection Methods 0.000 claims 1
- 239000007929 subcutaneous injection Substances 0.000 claims 1
- 230000013011 mating Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 229920001971 elastomer Polymers 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- NDAUXUAQIAJITI-UHFFFAOYSA-N albuterol Chemical compound CC(C)(C)NCC(O)C1=CC=C(O)C(CO)=C1 NDAUXUAQIAJITI-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- AWRLZJJDHWCYKN-UHFFFAOYSA-N 5-bromo-2-ethoxy-3-nitropyridine Chemical compound CCOC1=NC=C(Br)C=C1[N+]([O-])=O AWRLZJJDHWCYKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- LSLYOANBFKQKPT-UHFFFAOYSA-N fenoterol Chemical compound C=1C(O)=CC(O)=CC=1C(O)CNC(C)CC1=CC=C(O)C=C1 LSLYOANBFKQKPT-UHFFFAOYSA-N 0.000 description 2
- 229960001037 fenoterol hydrobromide Drugs 0.000 description 2
- -1 for example Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229960001361 ipratropium bromide Drugs 0.000 description 2
- LHLMOSXCXGLMMN-VVQPYUEFSA-M ipratropium bromide Chemical compound [Br-].O([C@H]1C[C@H]2CC[C@@H](C1)[N@@+]2(C)C(C)C)C(=O)C(CO)C1=CC=CC=C1 LHLMOSXCXGLMMN-VVQPYUEFSA-M 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 229960002052 salbutamol Drugs 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FVEJUHUCFCAYRP-UHFFFAOYSA-N 2-hydroxy-2,2-dithiophen-2-ylacetic acid Chemical compound C=1C=CSC=1C(O)(C(=O)O)C1=CC=CS1 FVEJUHUCFCAYRP-UHFFFAOYSA-N 0.000 description 1
- 125000003143 4-hydroxybenzyl group Chemical group [H]C([*])([H])C1=C([H])C([H])=C(O[H])C([H])=C1[H] 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- VOVIALXJUBGFJZ-KWVAZRHASA-N Budesonide Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1C[C@H]3OC(CCC)O[C@@]3(C(=O)CO)[C@@]1(C)C[C@@H]2O VOVIALXJUBGFJZ-KWVAZRHASA-N 0.000 description 1
- LERNTVKEWCAPOY-VOGVJGKGSA-N C[N+]1(C)[C@H]2C[C@H](C[C@@H]1[C@H]1O[C@@H]21)OC(=O)C(O)(c1cccs1)c1cccs1 Chemical compound C[N+]1(C)[C@H]2C[C@H](C[C@@H]1[C@H]1O[C@@H]21)OC(=O)C(O)(c1cccs1)c1cccs1 LERNTVKEWCAPOY-VOGVJGKGSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940098165 atrovent Drugs 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229960004436 budesonide Drugs 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- KEWHKYJURDBRMN-XSAPEOHZSA-M chembl2134724 Chemical compound O.[Br-].O([C@H]1C[C@H]2CC[C@@H](C1)[N+]2(C)C(C)C)C(=O)C(CO)C1=CC=CC=C1 KEWHKYJURDBRMN-XSAPEOHZSA-M 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229940097478 combivent Drugs 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- OEZNULIHEQCKJR-UHFFFAOYSA-N ethanol;hydrobromide Chemical compound Br.CCO OEZNULIHEQCKJR-UHFFFAOYSA-N 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical compound C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229960000676 flunisolide Drugs 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000010437 gem Substances 0.000 description 1
- 229910001751 gemstone Inorganic materials 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000002663 nebulization Methods 0.000 description 1
- 239000006199 nebulizer Substances 0.000 description 1
- 229960001609 oxitropium bromide Drugs 0.000 description 1
- LCELQERNWLBPSY-KHSTUMNDSA-M oxitropium bromide Chemical compound [Br-].C1([C@@H](CO)C(=O)O[C@H]2C[C@@H]3[N+]([C@H](C2)[C@@H]2[C@H]3O2)(C)CC)=CC=CC=C1 LCELQERNWLBPSY-KHSTUMNDSA-M 0.000 description 1
- LCELQERNWLBPSY-YAYGZGPXSA-M oxivent Chemical compound [Br-].C1([C@@H](CO)C(=O)OC2C[C@@H]3[N+]([C@H](C2)[C@@H]2[C@H]3O2)(C)CC)=CC=CC=C1 LCELQERNWLBPSY-YAYGZGPXSA-M 0.000 description 1
- 239000008194 pharmaceutical composition Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- MIXMJCQRHVAJIO-TZHJZOAOSA-N qk4dys664x Chemical compound O.C1([C@@H](F)C2)=CC(=O)C=C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2C[C@H]3OC(C)(C)O[C@@]3(C(=O)CO)[C@@]2(C)C[C@@H]1O.C1([C@@H](F)C2)=CC(=O)C=C[C@]1(C)[C@@H]1[C@@H]2[C@@H]2C[C@H]3OC(C)(C)O[C@@]3(C(=O)CO)[C@@]2(C)C[C@@H]1O MIXMJCQRHVAJIO-TZHJZOAOSA-N 0.000 description 1
- 239000010979 ruby Substances 0.000 description 1
- 229910001750 ruby Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 229960000257 tiotropium bromide Drugs 0.000 description 1
Classifications
-
- 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
- B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
- B05B15/18—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the invention relates to a device for holding a fluidic component, in particular of nozzles, especially in the high pressure region.
- a fluidic component in particular of nozzles, especially in the high pressure region.
- holders for microstructured components in particular of microstructured components
- Nozzles made by microstructuring are used, for example, in nebulizers to produce propellant-free medical aerosols used for inhalation.
- the invention aims to further improve the mounting of a fluidic component made of a wear-resistant, hard and thus generally brittle material and to increase the reliability of the holder.
- Microstructured nozzles with for example a nozzle opening of less than 10 ⁇ m are described, for example, in WO 94/07607 and WO 99/16530.
- the inhalable droplets thus produced have an average diameter of about 5 ⁇ m when the pressure of the liquid to be atomized is from 5 MPa (50 bar) to 40 MPa (400 bar).
- the nozzles can be made of thin silicon plates and glass plates. The outer dimensions of the nozzles are in the millimeter range.
- a typical nozzle for example, consists of a cuboid with the edge lengths 1.1 mm, 1.5 mm and 2.0 mm, which is composed of two plates.
- Nebulizers for producing propellant-free aerosols in which the device according to the invention for holding a fluidic component can be used are known from WO 91/14468 or WO 97/12687.
- a fluidic component a component is referred to, which is exposed to a pressurized fluid, and the pressure also within the component, for example in a
- Nozzle hole pending.
- Such a component can be kept pressure-tight, for example, by pressing into a holder made of hard material, if the material of the component can absorb mechanical forces without breaking or deforming to an unacceptable extent.
- seals made of deformable material for example made of copper or hard material are used, which are pressed with great force.
- components made of brittle material require the known methods for pressure-tight mounting of the component a considerable Effort and great care. Over the life of such salaried fluidic component only little reliable information is possible.
- US-A-3 997 111 discloses a fluid jet cutting apparatus which produces a high velocity fluid jet used for cutting, drilling or abrading material.
- the nozzle body is cylindrical and consists for example of sapphire or corundum.
- the nozzle body is enclosed in a cylindrical ring, which consists of moderately yielding plastic material.
- the Einfubbring is pressed into an annular recess of the nozzle carrier and seals the nozzle body against the nozzle carrier.
- US-A-4 313 570 discloses a nozzle holder for a water jet cutting apparatus in which the nozzle body is surrounded by a ring of elastomeric material, which in turn is disposed in a recess of the holder.
- the recess has the shape of a straight cylinder.
- the cross section of the ring is rectangular.
- the mantle surface of the recess and the outer and inner circumferential surface of the ring are arranged concentrically to the axis of the nozzle body and run parallel to each other and to the axis of the nozzle body.
- the fluidic component is surrounded by an elastomeric molded part whose outer contour is adapted to the inner contour of the holder and whose inner contour is adapted to the outer contour of the fluidic component.
- the elastomeric molded part surrounds the fluidic component over its entire circumference. At least one free surface of the elastomeric molding is exposed to the pressurized fluid.
- the holder may have on its inside a projection under which the elastomeric molding is pushed. It has been found difficult to produce in the elastomeric molding an internal stress which is sufficiently large even at low fluid pressure, and which is distributed approximately spatially evenly in the elastomeric molding.
- This known device has proved to be pressure-tight at approximately constant load with medium and high fluid pressure. With changing load With a fluid pressure that varies between a high peak and a very small value, the known device for long-term use needs improvement. This raises the task of a device for holding a fluidic
- a device for holding a fluidic component, which is exposed to an alternating fluid pressure and which comprises a holder, within which the fluidic component is arranged.
- the holder contacts the fluidic component on its low-pressure side.
- the device comprises an elastomeric molding, which encloses the fluidic component on its entire circumference.
- the outer contour of the elastomeric molding is connected to the inner contour of
- the Holder and the inner contour of the elastomeric molding is adapted to the outer contour of the fluidic component.
- the elastomeric molding has at least one free surface exposed to the pressurized fluid.
- the holder is fixed on a high-pressure side to a counter-piece, and • the elastomeric molded part is beveled on the fluid pressure side facing the fluidic component before assembling the device, and
- the counterpart is provided with an annular projection whose outer contour is adapted to the inner contour of the holder; after the assembly of the holder with the counterpart, the projection protrudes into the holder and deforms the elastomeric molded part, whereby a uniformly distributed internal stress is produced in the elastomeric molded part, and
- the volume of the protrusion on the counterpart is adapted to the volume which is lacking on the elastomeric shaped part in the area of the bevel, and the elastomeric molded part, which after assembly of the holder with the counterpart is under internal tension and deformed, fills the volume up to its counterpart almost completely out.
- the elastomeric molding is beveled at its high pressure end to the recess.
- the chamfering begins in the high-pressure-side lid surface of the elastomeric molded article on a closed line, which may be, for example, circular, elliptical or rectangular.
- the chamfer may have a constant inclination angle, or the inclination angle may be different in azimuthal direction. In the latter case, it is preferably smaller in the direction of the larger side of a cuboid-shaped fluidic component than in the direction of the smaller side of the cuboidal fluidic component.
- the cutting curve of the taper with the recess in the elastomeric molding may be at a constant level, or the cutting curve may be curved.
- the projection on the counterpart may preferably be annular and have a constant width.
- the outer contour of the projection is preferably adapted to the inner contour of the holder.
- the inner contour of the projection can be adapted to the outer contour of the fluidic component.
- the protrusion on the counterpart can have a constant width and a constant height on its circumference, or the protrusion can be of different widths and / or heights. For example, in the two areas opposite the two larger sides of a parallelepipedic fluidic component, be higher than in the two areas, which are opposite to the two smaller sides of a cuboid fluidic component.
- the elastomeric molded part is preferably produced as an injection-molded part.
- the recuperelastomere is filled bubble-free in a shape that matches the contours of the holder and the fluidic component is adapted.
- Such an elastomeric molded part behaves like an incompressible liquid. It is in register with the holder and the fluidic component.
- the elastomeric molded part is exposed to the fluid pressure only on the pressure side, not on the sides against which it bears against the holder and the fluidic component.
- the elastomeric molding allows the pressure compensation on the fluidic component.
- the elastomeric molding has no free surface to the low pressure side.
- the elastomeric molded part can be made, for example, of natural rubber or synthetic rubber such as silicone rubber, polyurethane, ethene-propene rubber (EPDM), fluorine rubber (FKM) or nitrile-butadiene rubber (NBR) or of a corresponding rubber.
- the fluidic component may be made of a wear-resistant, hard and thus generally brittle material (such as silicon, glass, ceramic, gemstone, eg sapphire, ruby, diamond) or of ductile material with wear-resistant hard surface (such as plastic, plastic metallized (chemical), Copper, hard chrome-plated copper, brass, aluminum, steel, hardened steel, wear-resistant surfaces produced by physical vapor deposition (PVD) or chemical vapor deposition (CVD, eg titanium nitride (TiN) or polycrystalline diamond on metal and / or
- the fluidic component can be made in one piece or composed of several parts, whereby the parts can be made of different materials
- the fluidic component can contain cavities, recesses or channel structures
- Microstructures may be arranged, for example, serve as a filter or as evaporation protection.
- the channels may be nozzle channels for a spray nozzle.
- An atomizer nozzle may include one or more nozzle channels whose axes may be parallel to each other or inclined relative to each other. For example, if there are two nozzle channels whose axes are in one plane and outside of the
- the holder may be made of almost any material, preferably metal or plastic, and may be a rotary body or a body in any other shape.
- the holder may be, for example, a cup-shaped rotary body which contains a - from its cover side outgoing - rotationally symmetrical recess whose axis coincides with the axis of the rotary body.
- This recess can be cylindrical, or it may be frusto-conical, with the end of the truncated cone with the larger diameter in the lid side of the holder.
- the lateral surface of the recess forms the inner contour of the holder. It can be produced as a formed part, as a casting or by machining (for example by machining, etching, eroding, Elysieren).
- the counterpart can be made of metal or plastic.
- the holder containing the elastomeric molding and the fluidic component is assembled with the counterpart.
- the edge of the holder is supported on the
- the fluidic component can be inserted into the elastomeric molded part, preferably before the elastomeric molded part is introduced into the recess in the holder.
- the holder can be bolted to the counterpart, glued, welded, crimped, potted or fixed by means of press fit or snap on the counterpart.
- the holder may preferably by means of a union nut on the
- the counterpart in the region in which it is connected to the holder designed as a rotary body.
- the high-pressure liquid is passed to the holder.
- the liquid enters the channel structure in the fluidic component and leaves the fluidic component at its low-pressure side in the region of the holder bottom.
- the fluid pressure acts within the dead volume on the elastomeric molding.
- the stress inside the elastomeric molding is spatially more evenly distributed than the stress which, in the known design of the holder, can be created by an annular projection attached to the inside of the holder, under which the elastomeric molding is pushed during assembly.
- the stress inside the elastomeric molded part can be determined by the ratio of the volume of the pre-formed part, as well as the material properties of the molded part itself. Jump on the counterpart to the volume, which lacks the tensionless elastomeric molded part by the bevel can be adjusted.
- the fluidic component is enclosed in its full height by the stressed elastomeric molded part.
- the device according to the invention is pressure-tight in long-term use at pressure swing load with a large difference between the maximum pressure (40 MPa and more) and the minimum pressure (about 0.1 MPa).
- the dead volume between the deformed under internal stress elastomeric molding and the holder-facing side of the counterpart can be kept small. It also serves to compensate for tolerances in the assembly of the holder with the counterpart.
- Controlled deformation of the elastomeric molded part during assembly of the holder with the counterpart avoids over-swelling of the elastomeric molded part via the opening in the fluidic component.
- the device according to the invention for holding a fluidic component is used, for example, in a miniaturized high-pressure atomizer (for example according to WO91 / 12687), in a needleless injector (for example according to WO01 / 64268) or in an applicator for ophthalmic pharmaceutical formulations (for example according to WO03 / 002045).
- a medical fluid administered with such a device may contain a drug dissolved in a solvent.
- solvents for example, water, ethanol or mixtures thereof are suitable.
- Berotec fenoterol hydrobromide, atrovent (ipratropium bromide), berodual (combination of fenoterol hydrobromide and ipratropium bromide), salbutamol (or albuterol), l- (3,5-dihydroxyphenyl) -2 - [[l- (4-hydroxybenzyl) ethyl] amino] ethanol hydrobromide), Combivent, Oxivent (oxitropium bromide), Ba 679 (tiotropium bromide), BEA 2180 (di (2-thienyl) glycolic acid tropenol ester), flunisolide , Budesonide and others used. Examples may be taken from WO97 / 01329 or WO98 / 27959. The device according to the invention will be explained further with reference to the figures
- Figure la shows in cross-section and in an oblique view a cup-shaped holder (1), which is provided with a recess (2). In the bottom of the holder, an opening (3) is present.
- Figure lb shows in cross section and in an oblique view an elastomeric molding (4) and a cuboidal fluidic component (5), which is composed of two parts, and which has been inserted into the elastomeric molding. In the contact surface of the two parts, a nozzle structure is present, which extends to the nozzle opening (6).
- the high pressure side cover surface of the elastomeric molding (4) is in the annular
- FIG. 1c shows, in cross-section and oblique view, a counterpart (9) with a bore (10) and an annular projection (11) on its elastomeric part
- FIG. 2 shows a further embodiment of the projection (11) on the counterpart (21) is shown in an oblique view.
- the projection (11) is higher in the two diametrically opposite regions (22 a, 22 b) than in the two diametrically opposite regions (23 a, 23 b).
- Figures 3 a, 4 a and 5 a show the elastomeric molding in a vertical view.
- FIGS. 3 b, 4 b and 5 b show cross sections of the elastomeric molded part.
- the elastomeric molding contains a cuboid recess (31) for a cuboid fluidic component.
- the cross section in FIG. 3 b runs along the line A - A in FIG. 3 a; the line A - A is perpendicular to the longer side of the recess (31).
- the cross section in FIG. 4 b runs along the line B - B in FIG. 4 a; the line B - B is perpendicular to the shorter side of the recess (31).
- the cross section in FIG. 5 b runs along the line C - C in FIG. 5 a; the line C - C runs diagonally to the Recess (31).
- the cutting line (32) of the bevel (8) with the recess (31) is at a constant level.
- the angle of inclination (measured from the main axis of the component) of the bevel (8) is largest in Figure 3 b and smallest in Figure 5 b, in Figure 4 b, the angle of inclination is at an intermediate value.
- Figure 6 shows a cross-section through the assembled bracket attached to a container for a fluid.
- the holder (1) contains in its recess an elastomeric molded part (4) with the fluidic component (5).
- a counterpart (9) rests on the edge of the holder.
- the projection (11) on the counterpart (9) protrudes into the recess of the holder (1) and has deformed the elastomeric molding (4).
- the fluid-exposed side (61) of the elastomeric molded part is curved, but the deformed elastomer does not reach the nozzle structure in the fluidic component.
- the contour of the chamfered molding (4) is indicated prior to assembly of the holder.
- the dead volume (63) is used for tolerance compensation during assembly of the holder; it has been reduced to a minimum.
- the holder is secured with a union nut (62) on the counterpart (9) and on the housing (65) for the fluid.
- the direction of flow of the fluid is indicated by arrows.
- the low pressure side of the holder is in the area containing the nozzle opening (6).
- the high pressure in the fluid acts in the channel structure within the fluidic component (5), within the
- Dead volume (63), within the bore (10) in the counterpart (9) and within the housing containing the fluid is a dead volume (63), within the bore (10) in the counterpart (9) and within the housing containing the fluid.
- FIG. 7 a shows a bevelled elastomeric molded part (4 a) with an inserted fluidic component (5) before assembly of the holder according to the invention.
- the elastomeric molding is at its outer edge almost as high as the fluidic component, but lower in the contact area with the fluidic component at the recess. The elastomeric molding is still undeformed and is not yet under internal tension.
- Figure 7 b shows the state after the insertion of a ring (71), whereby the elastomeric molded part is deformed and an internal stress is generated in the elastomeric molded part.
- the deformed elastomeric molded part extends on the fluidic component approximately to its upper edge. The bulge of the elastomeric molding barely protrudes beyond the height of the fluidic component.
- FIG. 7 c shows the deformed elastomeric molded part after assembly of the holder. The inserted one
- Projection (11) has deformed the elastomeric molding. There is a small dead volume (63) between the deformed elastomeric molding and the bottom of the counterpart.
- Figure 8 a shows a (not bevelled) elastomeric molded part (74 a) with an inserted fluidic component (5) prior to assembly of the holder according to the prior art. The elastomeric molded part is lower than the fluidic component. The elastomeric molding is undeformed and is not under internal tension.
- FIG. 8 b shows the state after the application of a ring (71) which prevents the elastomeric molded part from falling out of the holder or from being displaced within the holder, but which does not deform the elastomeric molded part.
- Figure 8c shows the undeformed elastomeric molding after assembling the fixture using a counterpart (9) having an annular projection (11) thereon. The dead volume (75) in FIG. 8c is greater than the dead volume (63) in FIG. 7c.
- the bottom of the holder contains a hole of 0.8 mm diameter.
- the bottom of the holder is 0.4 mm thick around the hole.
- the outer contour of the elastomeric molding of silicone rubber is cylindrical.
- the cylinder has a diameter of 4.2 mm before insertion into the holder and is 2.1 mm high in its outer surface. It contains a symmetrically arranged
- the fluidic component is designed as a spray nozzle.
- the nozzle is a cuboid composed of two silicon plates, which is 1, 4 mm wide, 2.7 mm long and 2.1 mm high.
- the nozzle contains a recess in the contact surface of the plates, which is provided with a microstructured filter and a microstructured evaporation device.
- the recess merges into two channels, each 8 ⁇ m wide, 6 ⁇ m deep and about 200 ⁇ m long.
- the axes of the two channels lie in one plane and are inclined by about 90 degrees to each other.
- the two nozzle openings have a distance of approximately 100 ⁇ m from each other on the outside of the atomizer nozzle.
- the substantially cylindrical counterpart is provided on its side facing the holder with an annular projection.
- the projection has an outer diameter of 3.15 mm, an inner diameter of 2.9 mm and a constant height of 0.6 mm.
- the counterpart contains an axial bore of 0.4 mm diameter.
- the device is attached to the counterpart by means of a union nut.
- the counterpart is part of a container containing the liquid to be atomized.
- the liquid is delivered by means of a miniaturized high pressure piston pump in subsets of about 15 microliters from the container to the atomizer.
- the peak liquid pressure within the nebulizer nozzle is about 65 MPa (650 bar) and, after the end of nebulization, practically drops to the normal barometric pressure (about 0.1 MPa).
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Nozzles (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Manipulator (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Clamps And Clips (AREA)
- Measuring Fluid Pressure (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL04804353T PL1706210T3 (pl) | 2004-01-08 | 2004-12-28 | Urządzenie do mocowania przepływowego elementu konstrukcyjnego |
SI200430625T SI1706210T1 (sl) | 2004-01-08 | 2004-12-28 | Naprava za drĹľanje fluidne komponente |
CY20081100249T CY1107900T1 (el) | 2004-01-08 | 2008-03-04 | Μια συσκευη για τη συγκρατηση ενος δομικου τμηματος το οποιο δεχεται την πιεση ενος ρευστου |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004001451A DE102004001451A1 (de) | 2004-01-08 | 2004-01-08 | Vorrichtung zum Haltern eines fluidischen Bauteiles |
PCT/EP2004/014764 WO2005065836A1 (fr) | 2004-01-08 | 2004-12-28 | Dispositif pour fixer un composant fluidique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1706210A1 true EP1706210A1 (fr) | 2006-10-04 |
EP1706210B1 EP1706210B1 (fr) | 2007-12-12 |
Family
ID=34744648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04804353A Active EP1706210B1 (fr) | 2004-01-08 | 2004-12-28 | Dispositif pour fixer un composant fluidique |
Country Status (29)
Country | Link |
---|---|
US (2) | US7837235B2 (fr) |
EP (1) | EP1706210B1 (fr) |
JP (1) | JP4382097B2 (fr) |
KR (1) | KR20060134060A (fr) |
CN (1) | CN1921949B (fr) |
AT (1) | ATE380595T1 (fr) |
AU (1) | AU2004311644A1 (fr) |
BR (1) | BRPI0418364B1 (fr) |
CA (1) | CA2552535C (fr) |
CO (1) | CO5700802A2 (fr) |
CY (1) | CY1107900T1 (fr) |
DE (2) | DE102004001451A1 (fr) |
DK (1) | DK1706210T3 (fr) |
EA (1) | EA008630B1 (fr) |
EC (1) | ECSP066691A (fr) |
EG (1) | EG25014A (fr) |
ES (1) | ES2298851T3 (fr) |
HR (1) | HRP20080013T3 (fr) |
IL (1) | IL176741A0 (fr) |
ME (1) | ME00797B (fr) |
MX (1) | MXPA06007670A (fr) |
NO (1) | NO20062759L (fr) |
PL (1) | PL1706210T3 (fr) |
PT (1) | PT1706210E (fr) |
RS (1) | RS50551B (fr) |
SI (1) | SI1706210T1 (fr) |
UA (1) | UA85865C2 (fr) |
WO (1) | WO2005065836A1 (fr) |
ZA (1) | ZA200604658B (fr) |
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-
2004
- 2004-01-08 DE DE102004001451A patent/DE102004001451A1/de not_active Withdrawn
- 2004-12-28 ES ES04804353T patent/ES2298851T3/es active Active
- 2004-12-28 EA EA200601207A patent/EA008630B1/ru not_active IP Right Cessation
- 2004-12-28 UA UAA200608739A patent/UA85865C2/uk unknown
- 2004-12-28 WO PCT/EP2004/014764 patent/WO2005065836A1/fr active Application Filing
- 2004-12-28 ME MEP-2009-162A patent/ME00797B/fr unknown
- 2004-12-28 MX MXPA06007670A patent/MXPA06007670A/es active IP Right Grant
- 2004-12-28 DE DE502004005733T patent/DE502004005733D1/de active Active
- 2004-12-28 RS RSP-2007/0487A patent/RS50551B/sr unknown
- 2004-12-28 PT PT04804353T patent/PT1706210E/pt unknown
- 2004-12-28 CA CA2552535A patent/CA2552535C/fr not_active Expired - Fee Related
- 2004-12-28 JP JP2006548173A patent/JP4382097B2/ja active Active
- 2004-12-28 DK DK04804353T patent/DK1706210T3/da active
- 2004-12-28 KR KR1020067015990A patent/KR20060134060A/ko not_active Application Discontinuation
- 2004-12-28 SI SI200430625T patent/SI1706210T1/sl unknown
- 2004-12-28 AU AU2004311644A patent/AU2004311644A1/en not_active Abandoned
- 2004-12-28 AT AT04804353T patent/ATE380595T1/de active
- 2004-12-28 CN CN2004800421467A patent/CN1921949B/zh active Active
- 2004-12-28 EP EP04804353A patent/EP1706210B1/fr active Active
- 2004-12-28 PL PL04804353T patent/PL1706210T3/pl unknown
- 2004-12-28 BR BRPI0418364-9A patent/BRPI0418364B1/pt active IP Right Grant
-
2005
- 2005-01-07 US US11/031,171 patent/US7837235B2/en active Active
-
2006
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- 2006-06-13 NO NO20062759A patent/NO20062759L/no not_active Application Discontinuation
- 2006-07-05 EG EGNA2006000639 patent/EG25014A/xx active
- 2006-07-06 IL IL176741A patent/IL176741A0/en unknown
- 2006-07-06 CO CO06065570A patent/CO5700802A2/es not_active Application Discontinuation
- 2006-07-07 EC EC2006006691A patent/ECSP066691A/es unknown
-
2008
- 2008-01-11 HR HR20080013T patent/HRP20080013T3/xx unknown
- 2008-03-04 CY CY20081100249T patent/CY1107900T1/el unknown
-
2009
- 2009-12-18 US US12/641,424 patent/US9027967B2/en active Active
Non-Patent Citations (1)
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