Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
  • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
  • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
  • F01M5/002—Cooling
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
  • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
  • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
  • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
  • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
  • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
  • F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
  • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/0246—Arrangements for connecting header boxes with flow lines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
  • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
  • F28D2021/0089—Oil coolers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
  • F28F2250/08—Fluid driving means, e.g. pumps, fans

Definitions

• the document shows an assembly for cooling and filtering hydraulic fluid, comprising an inlet tank, an outlet tank, and a heat exchanger.
• the outlet tank has a removable tank cover at its upper end, providing access to a vertically arranged cylindrical filter element located inside the outlet tank.
• the filter element is attached to the outlet tank at its two end openings.
• the fluid in the outlet tank can only flow radially into an inner cavity of the filter element.
• the lower end of the filter is connected to an outlet manifold with multiple outlets.
• the outlet manifold has a pipe projection that extends into the inner cavity of the filter at its lower end.
• the inlet tank and the outlet tank have connections for a fluid monitoring device. However, this design could impair the filter performance.
• a cooling device of this type is known in which a filter unit is arranged downstream of a cooling unit in the direction of fluid flow, in this case a hydraulic fluid.
• the cooling unit is designed as a finned cooler.
• the fluid guide channels open on both sides into fluid collection chambers that extend along the longitudinal sides of the cooling unit.
• the filter unit is arranged outside the fluid collection chamber.
• the filter element is housed in its own filter casing. The contaminated fluid flows through the filter element from the outside to the inside, so that fluid discharge occurs via the interior of the filter element. This filtration ensures that the cleaned fluid cannot form deposits in the connected hydraulic components. Fluid cleaned by the filter element is discharged via a drain into a separate collection pipe within the collection chamber. Connection points are also provided for discharging the cleaned fluid from the collection pipe.
• this design is very complex.
• a further disadvantage is the large installation space required due to the lateral arrangement of the filter casing.
• the IT 2020 0003 2120 A1 Disclosing a device with a heat exchanger consisting of an upper heat exchanger plate, a lower heat exchanger plate, and a plurality of intermediate heat exchanger plates, the device incorporates oil to be cooled. Oil enters and exits via oil connections and flows between them in inlet and outlet channels and oil flow zones. Fluid flow zones that can be supplied with coolant are arranged between the oil flow zones.
• the device includes a filter with a filter element that allows flow from the outside to the inside and projects into the outlet channel.
• the filter element also has a connecting section that leads into an oil circulation channel. This design does not include a distribution tank or a collection tank.
• a cooler in which a The filter is arranged horizontally in a collection chamber above the cooling channels.
• a separate filter housing is required, which is a disadvantage.
• the filter is relatively short, thus limiting its filtration efficiency.
• the filter protrudes into the collection chamber on one side through a mounting opening.
• Another disadvantage is that the cooled fluid must be discharged on the side of the mounting opening.
• the CN 103994130A shows a similar cooler with the disadvantages described above.
• the object of the present invention is to alleviate or eliminate at least some disadvantages of the prior art.
• This object is achieved with a heat exchanger according to claim 1.
• Preferred embodiments are specified in the dependent claims.
• the first fluid can flow directly from the second ends of the first flow channels inside the collection vessel to the outside of the filter element, i.e., without passing through a filter housing.
• the first fluid is filtered, meaning it is freed from particles, especially deposits.
• the first fluid can be discharged from the inside of the filter via the outlet.
• a filter line can be integrated into the collection vessel.
• the outlet is connected to the inside of the filter, which can always be kept free of dirt. For example, no dirt can enter the outlet if the filter is placed on a [missing information - likely a specific surface or material] before being installed inside the collection vessel.
• the filter element is designed to be installed on a dirty surface.
• the heat exchanger is configured as a cooler for hydraulic oil, which is supplied from the outlet of a hydraulic system of a machine, for example, a construction machine.
• the arrangement of the filter inside the collection tank results in a compact, space-saving design. Since the filter element is subjected to flow from the outside to the inside in a radial direction, the collection tank, which is in particular a collection box, can form the filter housing for the filter element.
• a separate filter housing around the filter element is unnecessary.
• the collection tank has several walls, in particular two narrow sides, two long sides, and a top, which enclose a collection chamber into which the second ends of the first flow channels for the first fluid directly open.
• the filter extends over the arrangement of first flow channels, such that imaginary vertical extensions of the first flow channels pass through the filter element.
• the filter has a hollow cylindrical shape, which defines the interior space for receiving the filtered first fluid.
• the outlet has a discharge section that projects into the interior of the filter.
• the connection section can be designed to be slim due to its connection with the interior of the filter.
• the interior is preferably completely surrounded circumferentially by the filter element.
• the discharge section has an outlet channel through which the first fluid is discharged from the collection container to the outside.
• the outlet channel can be connected to a suction line to draw the first fluid from the interior of the filter, via the discharge section, into the suction line outside the collection container.
• the filter is positioned precisely on the outlet part.
• the outlet part serves both to discharge the first fluid and to hold the filter element, preferably at a distance from the second ends of the first flow channels.
• a maintenance cover is provided to close an access opening leading into the interior of the collection container for filter replacement. Removing the maintenance cover reveals an access opening dimensioned to allow the filter to be inserted into or removed from the collection container.
• the maintenance cover is preferably connected to the collection container via a detachable connection, such as a screw connection.
• the maintenance cover has at least one opening leading into the interior of the filter, in which, for example, a sensor unit, in particular a contamination indicator, may be arranged, with which an operating parameter, in particular a degree of contamination of the filter, can be measured.
• a sensor unit in particular a contamination indicator
• the arrangement of the filter prevents contamination of the fluid lines, especially oil lines, and thus of the entire system during filter changes.
• the filter element is arranged exposed inside the collection container, particularly along its entire length (i.e., its extension in the direction of the longitudinal axis).
• the first fluid entering the distribution container via the second ends of the first flow channels can The air flows directly to the outside of the filter element, is filtered on the outside of the filter element, and then passes through the filter element into the interior of the filter element.
• the distribution container forms the filter housing, in which the filter element is freely arranged. This eliminates the need for a separate filter housing.
• the outlet part is essentially cylindrical and, in particular, is an outlet nozzle.
• the filter element is tubular, particularly hollow cylindrical, with the outlet part being cylindrical to match the filter element.
• a suction port can be connected to the connection part, preferably in different orientations to the flow direction within the connection part.
• the maintenance cover To hold the filter in the desired position within the collection container, it is advantageous for the maintenance cover to have a retaining element, particularly a retaining pin, projecting into the interior of the filter. It is especially preferred if the filter is held in position by both the outlet and the retaining element.
• the retaining element For a cylindrical filter element, it is advantageous for the retaining element to be a cylindrical retaining pin projecting into the interior of the filter.
• the filter can be mounted in the collection container not only in a single, predetermined orientation, but in two orientations rotated by 180°.
• the outlet part can be particularly effectively protected from contamination during the installation and removal of the filter.
• the routing of lines on the vehicle can be optimized.
• the supply and return lines can be located on the side facing the vehicle's axle, reducing line lengths and enabling a more compact and protected design.
• ease of servicing remains unchanged, as the maintenance cover is located on the outside of the vehicle and is therefore easily accessible for maintenance work.
• the prevention of contamination during filter changes has already been mentioned above.
• a first longitudinal end of the filter is held by the outlet part and a second longitudinal end of the filter by the retaining part of the maintenance cover.
• the maintenance cover particularly on the retaining part, has at least one through-opening to form a filter bypass, through which unfiltered first fluid can be introduced into the interior of the filter.
• a valve is provided, particularly inside the retaining part of the maintenance cover. In an open position, the unfiltered first fluid can be introduced through the through-opening of the maintenance cover into the interior of the filter and discharged via the outlet. In a closed position The valve prevents the unfiltered first fluid from entering the filter's interior.
• the valve switches from the closed to the open position when the pressure at the outlet reaches a predetermined value. This can occur, for example, when the first fluid can no longer pass through the filter element. By releasing the filter bypass, it can be ensured that even unfiltered first fluid is available at the outlet.
• the longitudinal axis of the filter element is arranged essentially horizontally.
• the first flow channels can be traversed from bottom to top.
• the collection vessel extends transversely to the first flow channels above them.
• the filter is arranged horizontally above and at a distance from the second ends of the flow channels.
• the collection container is cuboid in shape with two vertical short sides, two vertical long sides, and a horizontal top.
• the length of the collection container is its horizontal extent parallel to the long sides.
• the width of the collection container is its horizontal extent parallel to the short sides.
• the height of the collection container is its vertical extent.
• the filter element extends over essentially the entire length of the collection container. This allows for particularly effective filtration of the first fluid.
• the collection container and/or the maintenance cover are made of metal, in particular aluminum.
• the filter may have a metal filter holder structure.
• the filter element with the filter pores may be made of paper and/or metal and/or microfiber.
• Figs. 1 to 4 show different views of a heat exchanger according to the invention, which is designed as an oil-air cooler for providing cooled hydraulic oil for a suction line.
• Fig. 5 shows a split-view view of parts of the cooler.
• Fig. 6 shows a cross-sectional view of the cooler in the area of the collection tank.
• FIG. 1 shows a heat exchanger 1, which in the illustrated embodiment is designed as a cooler for cooling a first fluid, here hydraulic oil, by heat exchange with a second fluid, here air.
• the heat exchanger 1 has a plurality of first flow channels 2, which preferably extend parallel to each other, for example, in a vertical direction.
• the first fluid flows upwards from the first (lower) ends to the second (upper) ends of the first flow channels 2.
• a plurality of second flow channels 3 are formed, through which the second fluid, here cooling air, flows.
• the cooling air is guided through the second flow channels 3 by means of a fan 4.
• the fan 5 has a fan wheel 5, which rotates about an axis 5A.
• the first fluid is guided via an inlet 6, which in the illustrated example is an oil inlet, into a distribution tank 7.
• the distribution tank 7 encloses an internal distribution chamber, into which the first fluid is supplied via the inlet 6.
• the first flow or fluid channels 2 open into the common distribution chamber of the distribution tank 7, so that the first fluid is guided upwards from the distribution chamber through the first flow channels 3.
• a collection tank 8 is arranged, which encloses a uniform, i.e., undivided, collection chamber 9 into which the second ends of the first flow channels 2 open.
• the collection tank 8 has a first narrow side 8A, a second narrow side 8B, two longitudinal sides 8C, and a top 8D.
• collection container 8 is located in the Figs. 5 and 6 With a lower height and simplified representation, the collection container 8 is open on the underside towards the first flow channels 2.
• the heat exchanger 1 also has one, preferably exactly one, outlet 10 for discharging the cooled first fluid from the collection tank 8.
• the outlet 10 is connected to a suction port 10A, which can be connected via a suction line (not shown) to a hydraulic line of a construction machine (not shown).
• the heat exchanger 1 also has feet 22, which allow the heat exchanger to be placed on a (horizontal) floor surface.
• the feet 22 may have mounting openings 23, which allow the heat exchanger 1 to be fixed to the floor surface.
• a filter 11 is provided, which is designed to separate solid particles from the first fluid before the first fluid enters the suction port 10A.
• the filter 11 is located entirely inside the collection container 8, i.e., within the collection space 9 bounded by the walls of the collection container 8.
• the filter 11 has a filter element 12 with a hollow cylindrical shape.
• the filter element 12 has filter pleats.
• the filter element 12 has a plurality of filter pores through which the first fluid can pass.
• the longitudinal axis 11A of the filter element 12 extends horizontally in the longitudinal direction of the collection container 8, i.e., from the first narrow side 8A to the second narrow side 8B of the collection container 8.
• the filter 11 is arranged inside the collection container 8 in such a way that it is exposed, i.e., without a surrounding filter housing, that the first fluid first hits the outside of the filter element 12 (see arrows 13 in Fig. 6 This removes the dirt particles, For example, hose or pump abrasion and air pollution are released on the outside of the filter element 12.
• the first fluid flows through the filter pores of the filter element 12, radially from the outside to the inside with respect to the longitudinal axis 11A of the filter element 12.
• the first fluid enters an interior space 14 enclosed by the filter element 12.
• the outlet 10 has an outlet part 15, which in the illustrated embodiment is designed as a cylindrical outlet nozzle extending from a first narrow side 8A of the collection container 8 in the direction of the longitudinal axis of the filter element 12 into the interior space 14 of the filter 11.
• the filter 11 is arranged essentially precisely on the outlet part 15, so that a first longitudinal end of the filter 11 is supported by the outlet part 15. In the embodiment shown, the filter 11 is slid onto the outlet part 15 without tools.
• the outlet part 15 has an outlet channel 15A, which connects to the interior 14 of the filter element 12.
• the first fluid can be discharged longitudinally along the filter 11 (see arrows 16) from the interior 14 of the filter 11 via the outlet channel 15A out of the collection container 8.
• the collection container 8 has an access opening 17, which is closed with a maintenance cover 18 when assembled and in use.
• the access opening 17, fitted with the maintenance cover 18, is located on a second narrow side 8B opposite the first narrow side 8A of the collection container 8.
• the maintenance cover 18 has a maintenance cover plate 18A, which is mounted on the outside of the second narrow side 8B of the collection container 8, in the embodiment shown, with screws 18B.
• the access opening 17 is larger than the cross-section of the filter 11, so that the filter 11 can be removed from or inserted into the collection container 8 with the maintenance cover 18 removed, for example to replace a used filter 11 with a new one.
• the maintenance cover 18 has a retaining element 19 on its inner side facing the collection chamber 9, in this case a cylindrical retaining pin, which extends essentially snugly into the interior 14 of the filter 11.
• a retaining element 19 on its inner side facing the collection chamber 9, in this case a cylindrical retaining pin, which extends essentially snugly into the interior 14 of the filter 11.
• the maintenance cover 18 has at least one passage opening 20 leading into the interior 14 of the filter 11, in which, for example, a sensor unit 21, in particular a contamination indicator, can be arranged, with which an operating parameter, in particular a degree of contamination of the filter 11, can be measured.
• the maintenance cover 18, particularly at the retaining part 19, can have at least one through-opening to form a filter bypass, through which unfiltered first fluid can be guided into the interior of the filter 11.
• a valve is provided, particularly inside the retaining part 19 of the maintenance cover 18. In an open position, the unfiltered first fluid can be guided through the through-opening of the maintenance cover 18 into the interior of the filter 11 and discharged via the outlet 10. In a closed position, the unfiltered first fluid cannot enter the interior of the filter 11.
• the valve is switched to the open position when a pressure at the outlet 10 reaches a predetermined value. This prevents damage, for example, to a pump connected to the outlet 10.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Fluid-Pressure Circuits (AREA)
• Filtration Of Liquid (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=86721585

Family Applications (1)

Country Status (6)

Family Cites Families (8)

• 2022
  • 2022-07-22 AT ATA50556/2022A patent/AT525658B1/de active
• 2023
  • 2023-07-21 WO PCT/AT2023/060245 patent/WO2024016044A1/de not_active Ceased
  • 2023-07-21 EP EP23750527.6A patent/EP4558732B1/de active Active
  • 2023-07-21 CN CN202380055195.7A patent/CN119677966A/zh active Pending
  • 2023-07-21 PL PL23750527.6T patent/PL4558732T3/pl unknown
  • 2023-07-21 ES ES23750527T patent/ES3063114T3/es active Active

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