• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    VALVE FOR A CURRENT FLUID. The present invention relates to a valve for a flowing fluid, particularly a metering or injection valve, which has a valve seat body, which closes a valve chamber, with a central valve opening, and a perforated disc. injection port (18), arranged downstream of the valve seat body in the fluid flow direction, with at least one injection hole (19). To obtain an effective fluid turbulence preparation, cost-effective, economical in construction space, the perforated injection disc (18) in association with the injection hole (19) has a turbulence chamber (20) concentric to the hole of injection (19) and at least one swirl channel (21), leading from the swirl chamber (20) to below the valve opening (14), and the swirl chamber (20) and the swirl channel (21) are molded as recesses in the disc surface facing the valve seat body (12) of the injection perforated disc (18). The swirl channel (21) has a channel cross section, and the injection hole (19) a hole cross section, which are dimensioned in such a way that the ratio of channel cross section to hole cross section is equal to or (...).
    公开号:BR112014003635B1
    申请号:R112014003635-7
    申请日:2012-07-05
    公开日:2021-05-18
    发明作者:Kerstin Koch；Franz Thoemmes；Laurent Jeannel；Martin Stahl
    申请人:Robert Bosch Gmbh；
    IPC主号:
    专利说明:

    TECHNICAL STATUS
    [001] The present invention relates to a valve for a flowing fluid, particularly, regulation or injection valve for internal combustion engines.
    [002] In a known fuel injection valve for internal combustion engines (DE 195 27 049 A1), the valve seat body, which features a valve opening and a valve seat, in a valve seat support The tube is set back with respect to the free end thereof and borders the valve chamber with the latter. A spray device inserted in the valve seat support, arranged downstream of the valve opening in the direction of the fluid flow, has a plate-shaped injection perforated disc, with plate bottom and plate edge. The plate bottom resting flat on the flat, free front side of the free valve seat body, the plate edge rests on the valve seat support. By a surrounding weld seam at the edge of the plate and by an annular weld seam at the plate bottom, the perforated injection disc is fixedly connected both with the valve seat support and also with the valve seat body. In the central region of the dish bottom coincident with the valve opening, four injection holes are arranged, which are arranged on a circle of holes with a center point of circle coaxial to the valve opening. The injection holes are produced by erosion or stamping and can be guided vertically or obliquely by the bottom of the plate.
    [003] A gasoline or fuel injection valve for fuel injection system of internal combustion engines, particularly for direct injection of fuel into a combustion chamber of an internal combustion engine (DE 100 48 935 A1), features a valve member operated by an activator, which for valve opening and closing cooperates with a valve seat, which surrounds a valve opening, formed in a valve seat body. Downstream from the valve seat there is a turbulence element, also called the perforated injection disc, which has an inlet region that communicates with the valve opening and several outlet openings, also called injection holes. The injection holes are centrally arranged in each case in a turbulence chamber. From the inlet region it leads, in each case, a turbulence channel to, in each case, a turbulence chamber and exits tangentially therein, so that the fuel flowing from the inlet region to the turbulence chambers flows asymmetrically to the turbulence chambers. The turbulence element is produced from a sheet, and the inlet region opening structures, turbulence channels and turbulence chambers are inserted by means of punching, stamping, erosion or laser perforation. By the turbulence element a good spraying of the injected fuel at high pressure is obtained. DESCRIPTION OF THE INVENTION
    [004] The valve according to the invention has the advantage that, through the turbulence chamber and turbulence channel, a turbulent preparation of the fluid in the perforated injection disc is obtained, which guarantees an injection of the fluid as a finely powdered spray. By varying conditions from turbulence channel cross section to hole cross section and hole geometry, the turbulence can be adjusted in such a way that narrower and wider individual jets, also called spray blades, are formed in the spray. Additionally, jet angles and jet formed can be influenced. With the ratio values indicated in the present invention from channel cross section to bore cross section, at medium fluid pressures, such as prevail in suction tube injection in gasoline engines, in so-called DNOX systems, for metered injection of a urea-water solution in the exhaust gas of an internal combustion engine or in heating oil burners, the fluid preparation, in metered injection is optimized with respect to desired small jet angles and high spray quality. By the aforementioned tuning of the cross section dimensions of turbulence channel and injection hole to each other it is obtained that the intensity of turbulence applied to the fluid when passing through the turbulence chamber and injection hole is the smallest possible to obtain small jet angles and as large as necessary to obtain the highest spray quality.
    [005] The injection perforated disc, clearly improved in its preparation quality, can be inserted in valves that are already in production, without modification in the valve concept and mounted on the valves with the usual connection methods, for example, by welding , being that with several modifications of the injection perforated disc, a range of variants can be presented regarding jet angle, static passage and jet width and jet shape, of the desired fluid injection for the valves. With the valve according to the invention, a space-saving mode of turbulent spraying with minimal dead volume is realized behind the valve seat, which is cost-effectively integrated into a single perforated injection disc. In this case, the perforated injection disc can be designed as a disc with multiple holes or a single hole.
    [006] By the measures presented in the other embodiments, improvements and advantageous improvements of the indica valve in the present invention are possible.
    [007] According to a preferred embodiment of the invention, the turbulence chamber has an axial chamber depth and a chamber diameter, which are dimensioned in such a way that the ratio of chamber depth to chamber diameter has a lower limit value of 0.2 and an upper limit of 0.6 and can assume any value in between. Alternatively or additionally, the injection hole has a hole length and a hole diameter, which are dimensioned in such a way that the ratio of hole length to hole diameter covers a value range, whose lower limit is 0.2 and whose upper limit is 0.6. With two measures, the turbulence intensity, for further improvement of the spray quality, can be further influenced and in a target-directed manner.
    [008] According to a preferred embodiment of the invention, the outer surface of the valve seat body away from the valve chamber is formed flat or flat and the perforated injection disc rests directly on the outer surface of the valve body . The outer surface of the flat valve seat body therefore advantageously forms a cover for the recesses forming the swirl chamber and the swirl channel in the perforated injection disc.
    [009] If the flatness of the outer surface of the valve seat body is not sufficient, then according to an advantageous embodiment of the invention, between the perforated injection disc and the valve seat body there is arranged a compensating disc, which features a flat or flat disc surface, abutting on the perforated injection disc, and a central hole coaxial with the valve opening, and covering the recesses for turbulence channel and turbulence chamber in the perforated injection disc. The two discs are then externally calibrated with respect to their superimposed and joined disc surfaces so that poor inflows from the swirl chambers and swirl channels are avoided due to cracks in the cover of the recesses for the swirl chamber and the swirl channel.
    [0010] According to an embodiment of the invention, the injection perforated disc has a disc thickness in the range of 0.15 mm to 0.25 mm. This small disc thickness has the advantage that the length of the at least one injection hole is small, so that in the injection hole only small friction losses occur and therefore losses of fluid turbulence intensity in the injection hole remain small. The injection perforated disc produced from thin steel can therefore be completely welded well into the valve seat body, without a noteworthy deformation of the valve seat body taking place. By welding the perforated injection disc, the tightness of the valve is not impaired. The perforated injection disc can be incorporated well into conventional valves without increasing their construction length. The one-piece molded annular rib results in a trough or plate-like shape of the perforated injection disc, which ensures sufficient stability and allows for an alternative weld to the valve seat support or full welding of the thin plate edge or bottom of fine dish. An equally good stability of the fine injection perforated disc is also achieved by a joint with the compensation disc.
    [0011] According to an advantageous embodiment of the invention, the molding of turbulence chamber and turbulence channel on the surface of the disc by stamping or by removing material by means of erosion, corrosion or UKP laser (ultra-short pulse). In all types of production, by varying the ratio of channel cross section to hole cross section and hole geometry, turbulence can be adjusted in such a way that narrow and wide individual jets or fluid sheets are formed in the fluid spray . Also, the at least one injection hole can be made cylindrical or cone-shaped, with an increasing cross section in the descending direction and with a hole axis extended at right angles or obliquely to the surface of the disc.
    [0012] According to an advantageous embodiment of the invention, the turbulence channel has an inlet region, which moves away from the valve opening, and an inflow region, which enters the turbulence chamber, which is arranged in association with the chamber. of turbulence, such that the fluid tangentially enters the turbulence chamber. In this way, the injection hole is laterally inflowed through the turbulence channel and thus generates turbulence in the turbulence chamber, which through the at least one injection hole leads to a very fine spray of the spray by means of one or more fluid blades.
    [0013] According to an advantageous embodiment of the invention, the channel width of the turbulence channel narrows in the inlet region in the current direction and is preferably constant in the inflow region. This minimizes fluid bottleneck in the turbulence channel or can be adjusted very precisely.
    [0014] According to an advantageous embodiment of the invention, the turbulence channel has at least in the inflow region an outer channel side wall, which is tangentially guided in the swirl chamber wall, and an inner channel side wall, which it has such a distance from the outer channel side wall opposite thereto that it is such a distance from the outer channel side wall that an imaginary line-alignment of the inner channel side wall extends through the injection hole. By these constructive measures, the turbulence intensity is reduced to the maximum, which facilitates the optimization of the turbulence intensity, at higher fluid pressures in the turbulence channels.
    [0015] According to an advantageous embodiment of the invention, several injection holes are arranged at the same distance from each other on a circle concentric to the valve opening and there is a number of turbulence channels corresponding to the number of injection holes, which are arranged in a star shape at the valve opening, with a star point located below the valve opening. This makes a multi-hole disc with good spray quality. Preferably, the injection perforated disc, depending on the purpose of use, is provided with six to twelve injection holes.
    [0016] According to an advantageous embodiment of the invention, in the perforated injection disc there is present a single injection hole, which is arranged at the radial distance from the valve opening. To the turbulence chamber, which surrounds the injection hole, two arc-shaped turbulence channels are guided from the valve opening, which are arranged symmetrically to one another on the perforated injection disc. With this variant of a bore of the injection perforated disc, at very good spraying of the fluid, particularly small static flow rates can be presented. By the inflow of the turbulence chamber through the two arc-shaped turbulence channels, whose channel width, in turn, advantageously narrows in the inlet region in the current direction and is preferably at least approximately constant in the region. of inflow, a uniform turbulence can be formed. BRIEF DESCRIPTION OF THE DRAWINGS
    [0017] The invention is described in more detail in the description below by means of examples of embodiment represented in the drawings. Show:
    [0018] Figure 1 in detail, a longitudinal section of a valve for a fluid with a valve seat body and injection perforated disc disposed downstream of the valve seat body in the current direction,
    [0019] Figure 2 is a top view of the perforated injection disc, in perspective representation,
    [0020] Figure 3 is a view from below of the perforated injection disc in the direction of the arrow III in Figure 1, in perspective representation,
    [0021] Figure 4 a longitudinal section of a modified valve seat body, with perforated injection disc and compensation disc,
    [0022] Figure 5 is a top view of the compensation disc in Figure 4, perspective representation,
    [0023] Figure 6 is a top view of the perforated injection disc in Figure 4, perspective representation,
    [0024] Figure 7 is a longitudinal section of a valve seat body with injection perforated disc arranged downstream in the current direction, according to another example of modality,
    [0025] Figure 8 is a top view of the perforated injection disc in Figure 7, perspective representation,
    [0026] Figure 9 is a bottom view of the perforated injection disc in the direction of arrow IX in Figure 7, perspective representation.
    [0027] The valve for a flowing fluid, depicted in detail in Figure 1 with its end on the fluid outlet side, is used as an injection valve for fuel injection in fuel injection installations of internal combustion engines or for the metered injection of liquids, such as, for example, urea-water solutions, into the exhaust gas branch for internal combustion engines, for the purpose of additional treatment of the exhaust gas, but also finds application, advantageously, in burners. heating oil in heating installations. The valve has a sleeve-shaped valve seat support 11, which forms a part of the valve housing, which is closed with a valve seat body 12. In the valve seat body 12, which together with the valve seat support valve seat 11 borders a valve chamber 13, a valve opening 14 and a valve seat 15 are formed, which surrounds the valve opening 14. The valve seat, for closing and releasing the valve opening 14, cooperates with a spherical closing head 161 of a valve member 16, which is fixed, for example, welded, to the end of a hollow valve needle 162 facing the valve seat body 12. Through the hollow valve needle 162 of the member. of valve 16, fluid is supplied to the valve chamber 13, for which at least one through hole 17 is provided in the valve needle 162. The valve seat 15 forms, together with the closing head 161, a hermetic seat. , which is requested by volume of fluid that is under system pressure in valve chamber 13. To close valve opening 14, closing head 161 is pressed onto valve seat 15 by a valve closing mold, not shown here, which acts on the valve needle 162. The release of the valve opening 14 is by lifting the closing head 161 of the valve seat 15 against the restoring force of the valve closing spring and is known to be caused by of an electromagnetic, piezoceramic, or magneto-restrictive activator, which acts on valve needle 162.
    [0028] The valve opening 14 is arranged downstream in the fluid flow direction a perforated spray or injection disc 18, which has at least one injection hole19. In the exemplary embodiment, the injection perforated disc 18 according to Figures 1 to 3, several injection holes 19, here three, are arranged on a circle concentric to the valve opening 14, with the same distance from each other. The injection perforated disc 18j has, in association with the injection hole 18, a swirl chamber 20 concentric to the injection hole 19 and a swirl channel 21, which leads from the swirl chamber 20 to below the valve opening 14, so that in the example of embodiment of the injection perforated disc 19dac Figures 1 to 3, the number of the turbulence chambers 20 and turbulence channels 21 corresponding to the number of the injection holes 19. The turbulence channels 21 are arranged in a star shape, being that the star point is below the valve opening 14. The turbulence chambers 20 and the turbulence channels 21 are molded as recesses in the disc surface of the injection perforated disc 18 voted for the valve seat body 12. This molding gives whether by stamping or by removing material by erosion, corrosion or UKP (ultra-short) laser. With the same processes or by punching, the injection holes that pass through the injection perforated disc are also inserted, and, depending on the desired influence of the fluid leaving the injection holes, the injection holes 19 have a cylindrical shape or a cylindrical shape. truncated cone, with increasing diameter or cross-section in the direction of the current, and the injection bore axes extending parallel to the axis of the perforated injection disc 18 or inclined thereto, or at right or acute angles to the surface of the disc.
    [0029] Each turbulence channel 21 has an inlet region 211, which moves away from the valve opening 14, and an inflow region 212, which opens into the turbulence chamber. The inflow region 212 is arranged in association with the swirl chamber 20 such that the fluid enters the swirl chamber 20 tangentially. the channel width narrows in the inlet region 211, while in the inflow region 212 it is substantially constant. To carry out in the example of embodiment of the injection perforated disc 18 according to figures 1 to 3, in the star-shaped arrangement of the turbulence channels 21, the tangential entry of the fluid into the turbulence chamber 20, the inflow region 211 of the turbulence channels 21 is angled with respect to the inlet region 212. As shown in Figure 1, the perforated injection disc 18 abuts the outer surface 121 of the flat and flat form of the valve seat cup 12, so that the flat outer surface 121 of the valve seat body 12 covers the recesses forming the swirl chamber 20 and the swirl channel 21. If the flatness of the outer surface 121 of the valve seat body 12 is not sufficient, then as shown in the exemplary embodiment of figures 4 to 6, between the valve seat body 12 and the perforated injection disc 18 there is also a compensation disc 22, which has a central hole 2 3 coaxial to the valve opening 14 and, instead of the outer surface 121 of the valve seat body 12, assumes the cover of the turbulence chamber 20 and turbulence channel recesses 21 The compensating disc 23 and the perforated injection disc 18 are calibrated externally and then applied to and secured to the valve seat body 12 as indicated in Figure 4 by the surrounding weld seam 24. In the example of embodiment of the injection perforated disc 18 according to figures 1 to 3, the perforated injection disc 18 is provided with an annular rib 181 molded in one piece, and surrounding on the edge side, so that it has a trough or dish shape. The annular rib or trough edge or plate engages the valve seat body 12 with a positive snap fit and is welded by full weld to the valve seat body 12, as indicated by the weld seam 25 inscribed in Figure 1. Alternatively, however, the perforated injection disc 18 can also be completely welded to the bottom of the trough or plate and connected with the valve seat body 12. In the two examples of embodiment of the perforated injection disc 18 according to Figures 1 to 3 and according to Figures 4 to 6, the perforated injection disc 18 is extremely thin and produced from fine steel. Its disc thickness amounts to just 0.15mm to 0.25mm.
    [0030] With the injection perforated disc 18 shown in Figures 7 to 9 there is shown a so-called variant of a hole of the injection perforated disc 18 for particularly small static flow amounts of fluid. The single injection hole 19 in the injection perforated disc 18 is disposed radially from the valve opening 14 formed in the valve seat body 12, and to the swirl chamber 20 surrounding the injection hole 19, two are guided. arc-shaped turbulence channels 21, similarly formed, which are arranged symmetrically to one another in the perforated injection disc 18. Here too, each of the two turbulence channels 21 has an inflow region 21, which is remote from the valve opening 14, the channel width of which narrows in the fluid flow direction, and an inflow region 212, which enters tangentially into the swirl chamber, the channel width of which is substantially constant. The ends of the inlet regions 21, in turn, are covered by the valve opening 14. The injection perforated disc, like the injection perforated disc 18 in Figures 1 to 3, is equipped with an annular rib 181 molded into a piece, through which the perforated injection disc 18 is fixed to the valve seat cup 12, for example, by the weld seam 25.
    [0031] To the fluid, which exits in a metered manner, under pressure, from the valve opening 14, a turbulence is applied in the passage through the turbulence channel 21, turbulence chamber and injection hole 19, which causes a spray to a spray of the fluid exiting at least one injection hole 18, the spray having a spray club or a spray cone, with a plurality of spray blades or individual jets having a smaller or larger jet angle at relative to the shaft of club or cone. For the preferred area of use of the valve presented here, namely metered injection of fuel in the draft tube system or of urea-water solutions in the exhaust gas tract of internal combustion engines or of heating oil in the combustion chamber of a heating installation a very good spray is desired on the one hand, and on the other hand small jet angles are required of the spray blades, hence a small conical angle of the spray cone. High turbulence intensity produces good spray, but also relatively large jet angles. For optimization of turbulence intensity, in the sense that for the purpose of generating small jet angles it is as small as possible and for the purpose of obtaining a high spray quality, as large as necessary, the turbulence channel formations 21 , turbulence chamber 20 and injection hole 19 in the perforated injection disc 18 are tuned to one another. Firstly, swirl channel 21 has a channel cross section and injection hole 19 a hole cross section such that the ratio of channel cross section to hole cross section is equal to or greater than 1.5. Therefore, the channel cross section is relatively large. In addition, the turbulence chamber 20 has a chamber depth such that the ratio of chamber depth to chamber diameter is at least 0.2 and at most 0.6. The turbulence chamber is therefore relatively short. Additionally or alternatively to this, the injection hole 19 has a hole length such and a hole diameter such that the ratio of hole length to hole diameter is at least 0.2 and at most 0.6. Injection hole 19 is therefore relatively short. In the swirl channel it is further preferable that at least in the inflow region 212, an outer channel wall tangentially guided in the chamber wall of the swirl chamber 20 and an inner channel wall situated opposite the same, the channel wall The inner channel is arranged at such a distance from the outer channel wall that an imaginary alignment line leads to the inner channel wall through the injection hole 19.
    权利要求:
    Claims (18)
    [0001]
    1. Valve for a flowing fluid, in particular regulating valve or injection valve for internal combustion engines, with a valve seat body (12) which closes a valve chamber (13), in which a valve opening is formed. valve (14), and with a perforated injection disc (18) arranged downstream of the valve seat body (12) in the fluid flow direction, having at least one injection hole (19), a turbulence chamber (20) concentric to the injection hole (19) and at least one turbulence channel (21) leading from the turbulence chamber (20) to below the valve opening (14) with a constant height level, and the turbulence chamber turbulence (20) and the turbulence channel (21) are molded as recesses in the disc surface of the perforated injection disc (18) facing the valve seat body (12), characterized in that the turbulence channel ( 21) has a channel cross section and the injection hole (19) has a cross section. hole cross section, which are dimensioned such that the ratio of channel cross section to hole cross section is equal to or greater than 1.5 and wherein the swirl chamber (20) is itself molded set back in relation to the respective turbulence channel (21).
    [0002]
    2. Valve according to claim 1, characterized in that the turbulence chamber (20) has a chamber diameter and an axial chamber depth, which are dimensioned in such a way that the ratio of chamber depth to diameter of chamber is determined by a value range, whose lower limit is 0.2 and whose upper limit is 0.6.
    [0003]
    3. Valve according to claim 1 or 2, characterized in that the injection hole (19) has a hole length and a hole diameter, which are dimensioned in such a way that the ratio of hole length to diameter of hole covers a value range whose lower limit value is 0.2 and whose upper limit value is 0.6.
    [0004]
    4. Valve according to any one of claims 1 to 3, characterized in that the valve seat body (12) has a flat outer surface (121) away from the valve chamber (13), and the perforated disc of injection (18) abuts directly on the outer surface (121) of the valve seat body (12).
    [0005]
    5. Valve according to claim 4, characterized in that the perforated injection disc (18) engages the valve seat body (20) with an annular rib (181) molded in one piece, surrounding on the edge side .
    [0006]
    6. Valve according to any one of claims 1 to 3, characterized in that the valve seat body (12) has an external surface (121) away from the valve chamber (13) and between the perforated disc of injection (18) and the outer surface (121), there is arranged a compensating disk (22), which has a flat disk surface flatly abutting on the injection perforated disk (18) and a central hole (23) coaxial with the valve opening (14).
    [0007]
    7. Valve according to any one of claims 1 to 6, characterized in that the perforated injection disc (18) has a disc thickness in the range of 0.15 mm to 0.25 mm.
    [0008]
    8. Valve according to any one of claims 1 to 7, characterized in that the molding of turbulence chamber (20) and turbulence channel (21) in the perforated injection disc (18) is performed by stamping or by removal of material through erosion, corrosion or UKP (ultra-short pulse) laser.
    [0009]
    9. Valve according to any one of claims 1 to 8, characterized in that the turbulence channel (21) has an inlet region (211), which leads away from the valve opening (14), and a region (212), which flows into the turbulence chamber (20), which is arranged in association with the turbulence chamber (20) in such a way that the fluid flows tangentially to the turbulence chamber (20).
    [0010]
    10. Valve according to claim 9, characterized in that the channel width of the turbulence channel (21) narrows in the inlet region (211) in the fluid flow direction and preferably is at least approximately constant in the affluence region (212).
    [0011]
    11. Valve according to claim 9 or 10, characterized in that the turbulence channel (21) has, at least in the inflow region (212), an external channel side wall, which is guided tangentially to the wall of the turbulence chamber (20), and an inner channel side wall opposite thereto, which is such a distance from the outer channel side wall that an imaginary line of alignment of the inner channel side wall extends through the injection hole ( 19).
    [0012]
    12. Valve according to any one of claims 1 to 11, characterized in that several injection holes (19) are arranged on a circle concentric to the valve opening (14) with equal distance from each other and a number is present of turbulence channels (21) corresponding to the number of injection holes (19), turbulence channels (21) which are arranged in a star shape in relation to the valve opening (14) with a star point located below the opening of valve (14).
    [0013]
    13. Valve according to claim 12, characterized in that each turbulence channel (21) in the inflow region (212) is angled in relation to the inlet region (211).
    [0014]
    14. Valve according to any one of claims 1 to 11, characterized in that a single injection hole (19) is present, which is arranged at a radial distance from the valve opening (14), and where the The turbulence chamber (20) of the single injection hole (19) is guided by two arc-shaped turbulence channels (21) which are arranged symmetrically to one another.
    [0015]
    15. Valve according to any one of claims 1 to 14, characterized in that the at least one injection hole (19) has a cylindrical shape.
    [0016]
    16. Valve according to any one of claims 1 to 14, characterized in that the at least one injection hole (19) has a truncated cone shape with a growing cross section in the current direction.
    [0017]
    17. Valve according to any one of claims 1 to 16, characterized in that the at least one injection hole (19) has an injection hole axis that extends at a right angle or acute angle to the surface of injection perforated disc disc (18).
    [0018]
    18. Valve according to any one of claims 1 to 17, characterized in that the valve seat body (12) is inserted into the open end of a valve seat support (11) in the form of a sleeve with perforated disc injection tube (18) fixed to the valve seat body (12) and is connected, for example, welded, fixedly therewith.
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    同族专利:
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    法律状态:
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2020-01-21| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-04-06| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-18| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 05/07/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102011081175.3|2011-08-18|
    DE102011081175|2011-08-18|
    DE102012211665A|DE102012211665A1|2011-08-18|2012-07-04|Valve for a flowing fluid|
    DE102012211665.6|2012-07-04|
    PCT/EP2012/063075|WO2013023838A1|2011-08-18|2012-07-05|Valve for a flowing fluid|
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