EP4074966A1 - Réservoir et agencement doté d'un réservoir - Google Patents

Réservoir et agencement doté d'un réservoir Download PDF

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Publication number
EP4074966A1
EP4074966A1 EP22167628.1A EP22167628A EP4074966A1 EP 4074966 A1 EP4074966 A1 EP 4074966A1 EP 22167628 A EP22167628 A EP 22167628A EP 4074966 A1 EP4074966 A1 EP 4074966A1
Authority
EP
European Patent Office
Prior art keywords
tank
space
leg
oil
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22167628.1A
Other languages
German (de)
English (en)
Inventor
Andreas Guender
Andreas Weigel
Mark-Patrick Muehlhausen
Jan Dietz
Alexander Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP4074966A1 publication Critical patent/EP4074966A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • F04B23/028—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir the pump being mounted on top of the reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals

Definitions

  • the invention relates to a tank for a cooling liquid or for a pressure medium, in particular for an oil, according to the preamble of claim 1.
  • the invention also relates to an arrangement with a tank and with a hydraulic block.
  • a tank for a hydraulic unit This serves to store a hydraulic fluid.
  • the tank has an upper inlet connection and an outlet connection arranged below.
  • Guide walls are formed between the connections, which guide a flow of hydraulic fluid from the inlet connection to the outlet connection.
  • the flow guide is designed in such a way that it has at least two 180° flow arcs for cooling and calming the hydraulic fluid and for avoiding dead zones.
  • the invention is based on the object of creating a tank and arrangement with a tank which has a comparatively small tank volume, improved degassing and improved climate management.
  • a tank for a liquid or hydraulic liquid or oil has a tank space for storing the liquid.
  • the tank space has a return opening or inlet opening and a suction opening or outlet opening for the liquid.
  • the tank space is U-shaped or approximately U-shaped or V-shaped with a first space leg and a second space leg.
  • the space legs are connected via a transverse space leg of the tank space.
  • the tank space has two space legs that extend parallel to one another or at an angle to one another, the end sides of which are connected via a transverse space leg.
  • the return opening is preferably connected to the first space leg and the suction opening to the second space leg.
  • liquid can flow into the tank space via the return opening and flow via the first space leg to the second space leg.
  • the liquid can exit the tank space again via the intake opening.
  • the legs are advantageously arranged horizontally.
  • a tank volume can be reduced by the horizontal arrangement of the legs, with improved degassing and improved climate management at the same time.
  • the U-shaped flow guidance enables improved oil utilization. Standing areas or dead volumes in the tank space are minimized, which is why channeling with warm oil from the return to the suction line is prevented or at least reduced, since the oil has to flow through all areas in the tank space. Due to the two-leg design with the two space legs, at least the second space leg can serve as a fluid zone and calm the oil in a simple manner, since it is separated from the turbulent return area. It has been shown that due to the horizontal formation of the U-shaped legs, degassing of the oil is improved compared to the prior art due to the active deflection of the oil flow.
  • climate management in the tank is improved, since it has been shown that the oil is almost completely circulated during operation as a result of the configuration described. This results in a good distribution of the oil in the tank and the temperature of the oil can be recorded more accurately, since temperature differences in the oil are comparatively small.
  • the legs extend approximately parallel to the surface of the earth.
  • the legs can extend transversely to the direction of gravity.
  • the arrangement of the tank in space depends on the position of the vehicle.
  • the legs can extend approximately parallel to a plane of the chassis.
  • the tank is made of plastic in a simple manner in terms of device technology. Rotational molding has proven to be an extremely cost effective method of manufacturing the tank.
  • the U-shaped configuration of the tank is advantageously suitable for this. If necessary, it is conceivable to manufacture the tank using a plastic injection molding process.
  • the tank can be in the form of a sheet metal tank. Walls can then, for example, be connected in a material-to-material manner, for example by welding, or, at least in part, be configured by bending.
  • the first spatial leg is preferably delimited by a leg base.
  • a diffuser projection can be formed and/or integrated on the base of the leg, which extends into the space leg.
  • the liquid flow in the tank space can advantageously be split up by the diffuser projection, so that in particular no so-called sloshing occurs.
  • the diffuser projection is preferably formed opposite the return opening, which is in particular arranged at the top.
  • the diffuser projection can be provided in an axial geometric extension of the return opening or the return line.
  • the return opening is preferably arranged above the tank space.
  • the return opening can, for example, be designed in such a way that liquid flows into the tank space, for example in the direction of gravity.
  • the diffuser projection preferably tapers inwardly away from the thigh bottom.
  • the diffuser projection can, for example, be designed conically or in the shape of a truncated cone or pyramid-shaped or rotationally symmetrical. Viewed from the outside, it is conceivable that the diffuser projection has a concave design. It can be an integral part of the thigh base and easily manufactured together with the tank, for example by rotational molding will.
  • a wall thickness of the diffuser projection corresponds, for example, to a wall thickness of the bottom of the leg. In other words, a cone geometry is integrated into the tank wall or into the tank bottom, which ideally splits the oil flow in the tank.
  • a longitudinal axis of the diffuser projection is preferably coaxial or approximately coaxial with a longitudinal axis of the return opening.
  • Approximately may mean that tolerances are allowed to allow for the general function of the diffuser boss.
  • a flow direction of the liquid emerging from the return opening points towards the diffuser projection.
  • the direction of flow and a longitudinal axis of the diffuser projection are arranged, for example, at least approximately parallel to one another.
  • the return opening can be arranged above the diffuser projection.
  • the legs are preferably delimited by a side wall of the tank.
  • the tank can be designed as a U-shaped trough. It would also be conceivable to design the tank as a trough, which is divided in two by an inner wall, with the inner wall having a through opening to connect the space legs separated from one another by the inner wall, in order to achieve an approximately U-shaped configuration.
  • a free tank space is preferably formed between the first and second space leg.
  • This can be delimited by a first and a second side wall section.
  • These side conversion sections in turn can each delimit the first and second space legs.
  • the transverse side wall section delimiting the transverse space leg can then be provided between the two side wall sections.
  • the side wall sections and the transverse side wall section may extend upwardly from a tank bottom or from thigh bottoms or the thigh bottoms.
  • the side wall sections and the transverse side wall section are U-shaped and thus form a U-shaped inner wall for the legs.
  • the tank space which is delimited by the side wall sections and the transverse side wall section, can be viewed from above, in particular in the direction of gravity, from an inner cover section of the tanks must be closed.
  • the free space in the tank is open downwards, in particular as seen in the direction of gravity, and/or in the direction away from the leg of the transverse space.
  • the tank clearance can be closed towards the inside and open towards the outside, making it easy to produce.
  • a height of the tank clearance is preferably less than the tank height of the tank. This makes it possible for the inner cover section to be flushable if necessary. If required, liquid can thus flow from one space leg via the inner cover section to the other space leg.
  • the tank has a tank cap covering the leg spaces.
  • This is preferably formed in one piece with the tank and is produced, for example, by means of rotational moulding. If a free space is provided with an inner cover section, this can be spaced apart from the tank cover. It is also conceivable that the inner cover section is part of the tank cover.
  • the legs are preferably delimited by an outer side wall which is in particular connected in one piece to the tank cover and is more preferably connected in one piece to a tank base or the bases or bases of the legs.
  • the outer side wall preferably encompasses the inner side wall sections with the transverse side wall section in such a way that the U-shaped legs are formed.
  • the legs are delimited from below by a bottom wall.
  • This can, for example, simply be U-shaped.
  • the outer side wall is then preferably formed in one piece between the tank cover and the bottom wall.
  • the thigh bottoms can be part of the bottom wall.
  • the leg of the transverse space is delimited by two outer wall sections of the outer side wall.
  • a The outer wall section is then preferably arranged adjacent to the first space leg and the further outer wall section is arranged adjacent to the second space leg.
  • At least one of the outer wall sections extends, preferably viewed in cross section, in particular viewed transversely to the top-bottom direction, obliquely with respect to a longitudinal axis of the adjacent space leg. This outer wall section extends in such a way that it guides the liquid from the adjacent space leg towards the other space leg. If a free space is provided, at least the one obliquely arranged outer wall section extends towards the free space.
  • the obliquely formed outer wall section points towards the dividing wall.
  • Both outer wall sections are preferably arranged at an angle.
  • the two outer wall sections are arranged, for example, in a V-shape or approximately in a V-shape with respect to one another.
  • the outer wall sections are provided on the front side of the tank, with the tank then being able to taper in the area of the lateral leg of the transverse space when viewed from the outside. Waves and turbulence in the liquid can be avoided by the obliquely arranged outer wall sections. In other words, sloping sidewalls serve to avoid waves and turbulence.
  • the outer wall sections are preferably arranged in such a way that they each deflect the flow by 90° or by approximately 90°. As a result, a dynamic pressure is reduced or largely avoided, which leads to a reduction in wave motion and turbulence.
  • the tank has beveled corners for deflecting the flow from one space leg to the other space leg. It would also be conceivable for the outer wall sections to extend along an arc or a curve.
  • a U-shaped indentation which extends along the legs, is advantageously made in the bottom wall of the tank.
  • the indentation can be concave as seen from the outside and convex as seen from the inside. It would be conceivable that the depressions have one or more interruptions.
  • the indentation supports the flow guidance and, on the other hand, it can advantageously lead to a stiffening of the tank, in particular of the bottom wall.
  • the U-shaped recess preferably extends approximately parallel to the legs.
  • a width of the depression can be smaller than a bottom width of the legs.
  • the recess is preferably spaced from the walls.
  • the outer side wall can have at least one inner transverse rib or at least one inner transverse rib for one or both space legs. This can extend approximately or exactly in the direction from top to bottom.
  • the transverse rib leads to an advantageous stiffening of the tank.
  • the mechanical stability of the tank can be improved by traverse webs.
  • the tank cap of the tank has a flange.
  • This can be designed in such a way that it can be connected to a hydraulic block directly or via another component.
  • the flange has an annular flange surface.
  • the flange surface can, for example, extend in one plane, in particular in a plane transverse to the direction of gravity or the top-bottom direction.
  • the flange surface preferably comprises a cover opening of the tank cover. Lines for the return flow and the intake can be easily inserted into the tank via the cover opening.
  • Both space legs are preferably accessible via the cover opening. It is conceivable that the two space legs are open at the top via the cover opening, with the cover opening being able to be covered by a hydraulic block, for example.
  • the cover opening can then be designed in such a way that lines of the hydraulic block cantilever over the cover opening into the space leg, in particular exactly or approximately in the direction of gravity or the top-bottom direction.
  • the tank preferably has a support frame, via which the tank can be fixed.
  • the support frame can be U-shaped, for example.
  • the support frame can be designed in such a way that it is supported on a floor surface or a structural component.
  • An upper side of the tank is preferably firmly connected to the support frame. It is at least conceivable that part of the tank weight or the entire tank weight is carried by the support frame over the top.
  • the support frame can overlap the tank and be supported on the floor surface. If the support frame is U-shaped, for example, it is conceivable for the tank to be arranged between the frame legs.
  • the support frame can be attached via the flange surface of the tank, in particular via a sealing ring which is arranged on the flange surface and is attached to the tank via means. Screw connections, for example, serve as means.
  • the support frame may also have a flange portion which is fixed on the flange surface of the tank and encloses the lid opening.
  • the flange section preferably forms the connection between the frame legs.
  • the support frame has support legs, via which the support frame can be supported on the floor surface and which are connected to the flange section.
  • the tank can, for example, be designed in such a way that it is supported directly on the floor surface and also via the support frame.
  • the hydraulic block is attached to the support frame.
  • the support frame preferably has attachment sections or an attachment section for the hydraulic block within the flange section.
  • the tank is therefore not connected directly to the hydraulic block, but via the support frame.
  • the weight of the hydraulic block is thus preferably supported by the support frame and not by the tank. This can thus be configured more easily.
  • the tank has a cooler outlet connection and a cooler inlet connection.
  • the cooler outlet connection is preferably connected to one space leg and the cooler inlet connection is preferably connected to the other space leg.
  • the cooler outlet connection is preferably connected to the first space limb and the cooler inlet connection is connected to the second space limb. Liquid can thus be routed via the cooler from the return connection to the suction connection, which relieves the flow in the tank.
  • the cooler connections are preferably provided on the face side of the space leg, in particular on the side away from the transverse space leg. The connections are preferably introduced in the outer side wall.
  • Active liquid or oil cooling can be connected to the cooler outlet connection and to the cooler inlet connection. This can circulate the oil between two chambers, for example. As a result, cooling of the tank can be improved and a short circuit from the return connection to the suction connection can be prevented. Active cooling can reduce temperature-related oil aging.
  • the tank has one or more connections, in particular for: the cooler outlet connection and/or the cooler inlet connection and/or a connection for a level indicator and/or a connection for a ventilation filter and/or a filling connection and/or an oil drain and /or a connection for a level sensor and/or at least one connection as a reserve for a function and/or a connection for an optical oil level indicator.
  • the connections are preferably integrated into the tank.
  • the tank has fastening devices integrated into the bottom wall in order to fasten the tank to the floor.
  • fastening elements are integrated into the tank, such as inserted nuts, for fastening the tank to a substrate or for fastening additional components.
  • the tank has one or more integrated functional element(s), such as fastening elements for fastening the tank and/or for fastening one or more components.
  • another large-volume return line can open out into the tank, in particular via the tank opening.
  • the lines that is to say the return lines and the intake lines, preferably extend freely into the tank space, starting from the hydraulic block.
  • the tank opening and/or return opening and/or tank opening encloses at least part or all of the lines, but does not seal them, ie. H. no sealants are required between the lines and the opening.
  • the lines are connected via the hydraulic block.
  • the return opening and/or the suction opening and/or the tank opening is therefore preferably not a connection, which is why the tank can be configured in a simplified manner.
  • an arrangement with the tank according to one or more of the preceding aspects and with a hydraulic block is provided.
  • the tank is particularly suitable for the combination with the hydraulic block.
  • the tank according to the invention has a comparatively small oil volume, in particular due to improved flow guidance.
  • the improved flow control is achieved in particular by separating the return line and suction line and suction and/or through the slanted side walls.
  • degassing is also improved and temperature-related oil aging can be reduced, in particular by connecting a cooler. Improved temperature management is also made possible.
  • the tank with the multitude of functions can be manufactured, for example, by means of plastic rotational molding.
  • the return opening and the suction opening are preferably part of the hydraulic block, and these can be formed on lines. The lines can then protrude into the tank room.
  • the lines can preferably be firmly connected to the hydraulic block, in particular screwed.
  • the tank therefore does not require any fastening options for the lines, as a result of which it can be further designed in a simple manner in terms of device technology.
  • tank-side connections are screwed into the hydraulic block and protrude into the inside of the hydraulic tank.
  • a tank with side walls, a floor and a ceiling is disclosed.
  • the tank can be designed as a U-shaped trough, whereby the flow path from a suction and a suction line is maximized in a small installation space.
  • a tank 1 made of plastic for storing oil is shown in a side view.
  • This has a tank cap 2 or a tank top and a tank bottom 4 or a bottom wall.
  • the tank 1 is shown from above.
  • the tank 1 further has an outer side wall 6.
  • a flange 8 with a frame-shaped flange surface 10 can be seen from the top. This delimits a cover opening 12 or tank opening. Oil can be introduced into and removed from the tank via the cover opening 12 .
  • a plurality of blind hole recesses 14 are introduced into the flange surface 10, into which screws for fastening a component can be inserted.
  • Functional elements in the form of nuts are integrated within the blind hole recesses 14 . These are integrated as inserts during the manufacturing process.
  • the side wall 6 has two outer wall sections 16 and 18 arranged in a V-shape relative to one another on the end face of the tank 1 . These are used to deflect an oil flow, which is explained in more detail below.
  • a through hole 20 for a ventilation filter is formed in the tank cap 2 a through hole 20 for a ventilation filter.
  • a through-opening 22 is provided, which serves as a filling connection.
  • a filling level sensor can be introduced into a tank interior of the tank 1 in a further passage opening 24 .
  • a through opening 26 can be used for a further function or can be closed with a cap, for example.
  • the bottom wall 4 of the tank 1 is shown. This has a U-shaped depression 28 . A free space 30 can also be seen. This is designed to be open at the bottom towards the bottom wall 4 and is delimited by walls which, as explained in more detail below, delimit oil routing inside the tank. Furthermore, according to Fig. 1b from the bottom wall 4 a diffuser projection 32 inwards. This is designed concave seen from the outside. According to Fig. 1a it can be seen that the diffuser projection 32 is conical and has a wall thickness which corresponds approximately to the wall thickness of the bottom wall 4 . Furthermore, four supporting elements 34 are integrated into the bottom wall 4, via which the tank 1 can rest on a bottom or on a support surface. The support elements 34 are formed in the corner area of the tank 1 and extend downwards away from the bottom wall 4 in the manner of a projection.
  • the tank 1 is shown in a rear view.
  • the free space 30 can be seen. This is open to the rear.
  • the space 30 is defined by first and second inner sidewall sections 36 and 38 . It is delimited at the top by an inner cover section 40 .
  • the free space 30 according to Figure 1D an inner transverse side wall section 42 provided between side wall sections 36 and 38 .
  • the upper inner cover section 40 is arranged below the tank cover 2 .
  • Fig. 1b a front view of the tank 1 is shown.
  • the outer wall sections 16 and 18 arranged at an angle to one another can be seen. These approach each other from a respective tank side of the tank 1 .
  • An optical oil level indicator 44 is formed on the front side. This extends starting from the bottom wall 4 upwards and opens into the tank cap 2.
  • a through-opening 46 formed at the end as an oil drain.
  • a first and second oil port 48, 50 is provided.
  • a cooler can be connected to this. Oil is taken from the oil connection 50 and fed back via the oil connection 48 .
  • a large-volume return line 52 and an intake line 54 are shown schematically. These are fed into the tank interior via the cover opening 12 .
  • the inner tank space of the tank 1 has a first space leg 56 and a second space leg 58, the sections 36, 38, 40 and 42, s. Fig. 1b and e , are separated from each other.
  • the return line 52 dips into the first space limb 56 and the intake line 54 dips into the second space limb 58 .
  • Oil is fed into the first space leg 56 via the return line 52 and oil is removed via the second space leg 58 via the intake line 54 .
  • the lines 52 and 54 are in the 2 hydraulic block not shown connected.
  • a return line 60 is shown which has a smaller diameter than the return line 52 .
  • the return line 60 also opens into the first space leg 56 and is connected to the hydraulic block.
  • a filter 62 for oil attached to the tank 1 is also provided. This is in the through hole 20 from 1c deployed.
  • a level sensor 64 is also shown, which extends into the through-opening 24 1c is used.
  • the oil level indicator 44 attached to the front of the tank. This is connected to the inside of the tank to show the oil level.
  • FIG. 3 shows the tank 1 with the space legs 56 and 58 in cross section. These are connected to one another via a transverse space leg 66 .
  • the legs 56, 58 and 66 are arranged in a U-shape, with the legs 56, 58 and 66 being arranged lying down.
  • Oil enters the first chamber leg 56 via a return opening 68 , shown schematically as a ring, in the return line 52 and the return line 60 .
  • the oil then flows along the first leg 56 and is deflected by 90° in each case by the inclined outer wall sections 16 and 18, which are also designed to be inclined on the inside.
  • the outer wall sections 16 and 18 delimit the transverse space leg 66.
  • the oil then reaches the second space leg 58 via this and can be drawn in via a suction opening 70, which is schematically represented as a ring in 3 is shown to be sucked.
  • the intake opening 70 is part of the intake line 54 2 .
  • the return opening 68 of the return line 52 is arranged above the diffuser projection 32 . This is arranged approximately coaxially to the conical diffuser projection 32 and spaced somewhat from it. Oil exiting return port 68 is evenly split by diffuser boss 32 .
  • a tank 72 according to a second exemplary embodiment is shown. This is in contrast to the 1 formed from sheet metal.
  • the top of the tank 72 according to Figure 5c 12 shows a flange surface 74 formed circumferentially around tank 72.
  • FIG. A hydraulic block for example, can be fastened via the flange surface 74, or a cover with a further flange is arranged, or a support frame is fastened to it.
  • the tank 72 also has a conical diffuser projection 76 .
  • the inner tank space is continuously divided by a sheet metal wall 78 .
  • the tank space also has a first and second space leg 82 and 84, which have a transverse space leg 86, s.
  • Figure 5a are connected in a U-shape.
  • Figure 5b and 5c oblique frontal outer wall sections 88 and 90 are shown.
  • FIG. 6 shows the tank 1 according to the first embodiment together with a hydraulic block 92 and a support frame 94.
  • the support frame 94 is provided with a frame-shaped flange section 95 on the flange surface 10 of the flange 8 of the tank 1, see FIG. 1c , fastened.
  • the flange section 96 is expanded radially inward, the hydraulic block 92 being fastened on the expansion.
  • the hydraulic block 92 is attached to an upper side of the support frame 94 and the tank 1 is attached to an underside of the support frame 94 .
  • the hydraulic block 92 is supported by the support frame 94 and four support legs 96, two of which are in 6 can be seen on the ground.
  • the tank 1 is therefore not burdened by the weight of the hydraulic block 92 .
  • the support structure 94 overlaps the tank 1 laterally with its support legs 96 .
  • the arrangement 6 it is, for example, a hydraulic unit. This is used, for example, for a hydraulic press brake. It is conceivable that the press has two or more of the arrangements.
  • the tank 1 preferably has integrated functional elements. These can be attachment options that are integrated into the tank design. For example, inserted nuts can be provided to fasten the tank to the ground or additional components. Further functional elements do not have to be additionally attached, for example, but can already be integrated into the tank design and produced by rotational molding.
  • trusses such as the recess 28 from Fig. 1b and lateral indentations 100 and 102, cf. 3 , which can extend in an up and down direction and can be molded into the tank 1 from the outside, serve to increase the mechanical stability of the tank 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP22167628.1A 2021-04-16 2022-04-11 Réservoir et agencement doté d'un réservoir Pending EP4074966A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021203767.4A DE102021203767A1 (de) 2021-04-16 2021-04-16 Tank und Anordnung mit einem Tank

Publications (1)

Publication Number Publication Date
EP4074966A1 true EP4074966A1 (fr) 2022-10-19

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49101186U (fr) * 1972-12-22 1974-08-30
EP0271702A2 (fr) * 1986-12-18 1988-06-22 MAN Nutzfahrzeuge Aktiengesellschaft Réservoir d'huile pour l'alimentation d'un circuit hydraulique de travail avec la fonction d'accumulation et pour la reprise d'huile retournée
US20120055569A1 (en) * 2009-06-01 2012-03-08 Bycyrus International Inc. Sealed hydraulic tank system for mining shovel
JP2012225061A (ja) * 2011-04-20 2012-11-15 Hitachi Constr Mach Co Ltd 油圧式作業機械の作動油タンク
DE102013222908A1 (de) * 2013-11-11 2015-05-13 Mahle International Gmbh Hydrauliktank
DE102018217903A1 (de) 2018-10-18 2020-04-23 Leica Microsystems Cms Gmbh Inferenz Mikroskopie

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018217930A1 (de) 2018-10-19 2020-04-23 Robert Bosch Gmbh Tank für ein hydraulisches Aggregat

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49101186U (fr) * 1972-12-22 1974-08-30
EP0271702A2 (fr) * 1986-12-18 1988-06-22 MAN Nutzfahrzeuge Aktiengesellschaft Réservoir d'huile pour l'alimentation d'un circuit hydraulique de travail avec la fonction d'accumulation et pour la reprise d'huile retournée
US20120055569A1 (en) * 2009-06-01 2012-03-08 Bycyrus International Inc. Sealed hydraulic tank system for mining shovel
JP2012225061A (ja) * 2011-04-20 2012-11-15 Hitachi Constr Mach Co Ltd 油圧式作業機械の作動油タンク
DE102013222908A1 (de) * 2013-11-11 2015-05-13 Mahle International Gmbh Hydrauliktank
DE102018217903A1 (de) 2018-10-18 2020-04-23 Leica Microsystems Cms Gmbh Inferenz Mikroskopie

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