WO2024016044A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- WO2024016044A1 WO2024016044A1 PCT/AT2023/060245 AT2023060245W WO2024016044A1 WO 2024016044 A1 WO2024016044 A1 WO 2024016044A1 AT 2023060245 W AT2023060245 W AT 2023060245W WO 2024016044 A1 WO2024016044 A1 WO 2024016044A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- fluid
- outlet
- heat exchanger
- collecting container
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 75
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims description 31
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 8
- 238000011109 contamination Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001410 Microfiber Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
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- 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
- 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
- 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 invention relates to a heat exchanger, in particular an oil-air cooler, for heat exchange between a first fluid, in particular hydraulic oil, and a second fluid, in particular air, comprising: a number of first flow channels for the passage of the first fluid, a number of second ones flow channels for the passage of the second fluid, a distribution container for dividing the first fluid between first ends of the first flow channels, a collecting container for collecting the first fluid emerging from second ends of the first flow channels, an outlet, in particular for a suction connection, for draining, in particular suction, of the first fluid from the collection container, a filter with a filter element for filtering the first fluid before entering the outlet.
- a generic cooling device is known from WO 2005/093357 A1, in which a filter unit is arranged behind a cooling unit in the flow direction of the fluid, here a hydraulic medium.
- the cooling unit is designed as a finned cooler.
- the fluid guide channels open into fluid collecting spaces on both sides, which extend along the long sides of the cooling unit.
- the filter unit is arranged outside the fluid collection space.
- the filter element is housed in its own filter housing. The contaminated fluid flows through the filter element from the outside to the inside, so that the fluid is removed via the interior of the filter element. The filtering ensures that the cleaned fluid cannot form deposits in the connected hydraulic devices. Fluid cleaned by the filter element is discharged via a drain into its own collecting pipe within the collecting space.
- connection points are provided with which the cleaned fluid is removed from the collecting pipe.
- this design is structurally very complex.
- Another disadvantage is the large installation space, which is associated with the lateral arrangement of the filter housing. Further general prior art is shown in DE 10009864 A1 and DE 102005054755 B3.
- a cooler in which a filter is arranged horizontally in a collecting space above the cooling channels.
- the disadvantage is that a separate filter housing is provided.
- the filter is comparatively short, which limits the filter effect.
- the filter protrudes into the collecting space on one side via an assembly opening.
- Another disadvantage is that the cooled fluid has to be drained away on the side of the assembly opening.
- CN 103994130A shows a similar cooler with the disadvantages described previously.
- the object of the present invention is to alleviate or eliminate at least individual disadvantages of the prior art. to fix.
- This task is solved with a heat exchanger according to claim 1. Preferred embodiments are specified in the dependent claims.
- the filter is arranged inside the collecting container in such a way that the first fluid is guided from the outside through the filter element into an interior of the filter.
- the first fluid can flow directly from the second ends of the first flow channels inside the collecting container, i.e. H . without passing through a filter housing, flow to the outside of the filter element, where the first fluid is filtered, i.e. H . is freed from particles, especially deposits.
- the first fluid can be drained from the interior of the filter via the outlet.
- a filter line can be integrated into the collecting container.
- the outlet is advantageously connected to the inside of the filter, which can always be kept free of dirt. For example, dirt cannot enter the outlet if the filter was placed on a dirty surface inside the collection container before installation. This makes it possible first fluid with a high degree of purity is made available at the outlet.
- the heat exchanger is designed as a cooler for hydraulic oil, which is supplied from the outlet of a hydraulic device of a machine, for example a construction machine.
- the collecting container which is in particular a collecting box, can form the filter housing for the filter element.
- a separate filter housing around the filter element can be omitted.
- the collecting container has a plurality of walls, in particular two narrow sides, two long sides and a top, which enclose a collecting space inside into which the second ends of the first flow channels for the first fluid open directly.
- the filter preferably extends over the arrangement of first flow channels, so that imaginary vertical extensions of the first flow channels pass through the filter element.
- the filter preferably has a hollow cylindrical basic shape, with which the interior space is defined for receiving the filtered first fluid.
- the arrangement of the filter can prevent contamination of the fluid lines, especially oil lines, and thus of the entire system when changing the filter.
- the location and direction information refers to the intended use of the heat exchanger.
- the filter element is arranged exposed inside the collecting container, in particular over its entire length (i.e. 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 flow directly to the outside of the filter element, be filtered on the outside of the filter element and pass through the filter element into the interior space within the filter element.
- the distribution container advantageously forms the filter housing in which the filter element is arranged exposed. Thus can There is no need for a filter housing separate from the distribution container.
- the outlet has a preferably substantially cylindrical outlet part, in particular an outlet connection, which projects into the interior of the filter.
- the connecting part can be made slim through the connection to the interior of the filter.
- the interior is preferably completely surrounded by the filter element in the circumferential direction.
- the first fluid can thus flow from radially outside the filter element through filter pores of the filter element into the interior of the filter, and from there be led out of the collecting container via the outlet part.
- the filter element is tubular, in particular hollow cylindrical, with the outlet part being cylindrical in accordance with the filter element.
- the outlet part has an outlet channel with which the first fluid is drained from the collecting container to the outside.
- the outlet channel can be connected to a suction line in order to suck the first fluid from the interior of the filter via the outlet part into the suction line outside the collecting container.
- a suction connection can be connected to the connection part, preferably in different orientations to the flow direction within the connection part.
- the filter is arranged essentially precisely on the outlet part, in particular pushed onto the outlet part.
- the outlet part takes over the discharge of the first fluid and, on the other hand, holds the filter element, preferably at a distance from the second ends of the first flow channels.
- a maintenance cover Closing an access opening leading into the interior of the collecting container is provided for replacing the filter. By removing the maintenance cover, an access opening is exposed, which is dimensioned so that the filter can be inserted into the collection container through the access opening. can be removed from the collection container.
- the maintenance cover is preferably connected to the collecting container via a detachable connection, for example via a screw connection.
- the maintenance cover has a holding part, in particular a holding pin, which projects into the interior of the filter for holding the filter. It is particularly preferred if the filter is held in position via the outlet part on the one hand and the holding part on the other hand.
- the holding part is designed as a cylindrical holding pin, which protrudes into the interior of the filter.
- the filter can not only be installed in a single predetermined installation direction in the collecting container, but in two installation positions turned by 180 °.
- the outlet part can be particularly effectively protected from contamination when installing and removing the filter.
- the line routing on the vehicle can be optimized.
- the supply and discharge lines can be attached in particular on the side facing the vehicle axle, which reduces line lengths and enables a more compact and protected design.
- the ease of servicing remains unchanged because the maintenance cover is located on the outside of the vehicle and is therefore easily accessible for maintenance work. Preventing contamination when changing filters has already been discussed above.
- a first longitudinal end of the filter is held by the outlet part and a second longitudinal end of the filter is held by the holding part of the maintenance cover. With this design, a stable holder of the filter is achieved at opposite longitudinal ends. It is also advantageous that incorrect positioning of the filter in the collection container is reliably avoided, since the maintenance cover can only be attached to the collection container if the filter is stored on the maintenance cover via the holding part and is therefore positioned correctly.
- the maintenance cover in particular on the holding part, has at least one through opening to form a filter bypass, through which unfiltered first fluid can be guided into the interior of the filter.
- a valve is preferably provided, in particular in the interior of the holding part of the maintenance cover. When the valve is in the open position, the unfiltered first fluid can be guided through the passage opening of the maintenance cover into the interior of the filter and drained away via the outlet. When the valve is in a closed position, the unfiltered first fluid cannot enter the interior of the filter.
- the valve is transferred from the closed to the open position when a pressure at the outlet reaches a predetermined value. This can be the case, for example, if the first fluid can no longer pass through the filter element. By releasing the filter bypass it can be ensured that the first fluid, even unfiltered, is provided at the outlet.
- the longitudinal axis of the filter element is arranged essentially horizontally.
- the first flow channels can be flowed through from bottom to top.
- the collecting container extends transversely to the first flow channels above the first flow channels.
- the filter is arranged horizontally above and at a distance from the second ends of the flow channels.
- the collecting container is preferably cuboid with two vertical cal narrow sides, two vertical long sides and a horizontal top.
- the length of the collecting container is the horizontal extension parallel to the long sides.
- the width of the collecting container is the horizontal extent parallel to the narrow sides.
- the height of the collecting container is the vertical extent of the collecting container.
- the filter element preferably extends over essentially the entire length of the collecting container. This allows particularly effective filtering of the first fluid to be achieved.
- the collecting container and/or the maintenance cover are made of metal, in particular aluminum.
- the filter may have a filter holder structure made of metal.
- the filter element with the filter pores can be made of paper and/or metal and/or microfiber.
- Fig. 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 an exploded view of parts of the cooler.
- Fig. 6 shows a sectional view of the cooler in the area of the collecting container.
- Fig. 1 to 4 show a heat exchanger 1, which in the embodiment shown is designed as a cooler for cooling a first fluid, here hydraulic oil, through 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 one another, for example in the vertical direction.
- the first fluid flows upward from first (lower) ends to second (upper) ends of the first flow channels 2.
- a large number 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 with the help of a fan 4.
- the fan 5 has a fan wheel 5 which rotates about an axis 5A.
- the first fluid is guided into a distribution container 7 via an inlet 6, which in the example shown is an oil inlet.
- the distribution container 7 includes a distribution space inside, to which the first fluid is supplied via the inlet 6.
- the first flow or Fluid channels 2 open into the common distribution space of the distribution container 7, so that the first fluid is guided upwards from the distribution space through the first flow channels 3.
- a collecting container 8 is arranged, which has a uniform, i.e. H . not subdivided, collecting space 9, into which the second ends of the first flow channels 2 open.
- the collecting container 8 has a first narrow side 8A, a second narrow side 8B, two long sides 8C and a top 8D.
- the collecting container 8 is shown in FIGS. 5 and 6 with a lower height and shown in simplified form.
- the collecting 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 collecting container 8.
- the outlet 10 is connected to a suction connection 10A, which can be connected to a hydraulic line of a construction machine (not shown) via a suction line (not shown).
- the heat exchanger 1 also has feet 22 with which the heat exchanger can be placed on a (horizontal) floor surface.
- the feet 22 can have mounting openings 23 with which the heat exchanger 1 can be fixed on the floor surface.
- a filter 11 is provided, which is designed to separate solid particles from the first fluid before that first fluid enters the suction port 10A.
- the filter 11 is completely inside the collecting container 8, i.e. H . arranged within the collecting space 9 delimited by the walls of the collecting container 8.
- the filter 11 has a filter element 12 with a hollow cylindrical basic shape.
- the filter element has 12 filter folds.
- the filter element 12 has a large number 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 collecting container 8, i.e. H . from the first narrow side 8A to the second narrow side 8B of the collecting container 8.
- the filter 11 is exposed inside the collecting container 8, i.e. H . without a surrounding filter housing, arranged so that the first fluid first hits the outside of the filter element 12 (cf. arrows 13 in FIG. 6). This removes the dirt particles, such as 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, viewed in the radial direction with respect to the longitudinal axis 11A of the filter element 12, from the outside to the inside.
- the first fluid passes on the outside of the filter element 12 into an interior space 14, which the filter element 12 encloses inside.
- the outlet 10 has an outlet part 15, which in the embodiment shown is designed as a cylindrical outlet connection which extends from a first narrow side 8A of the collecting container 8 in the direction of the longitudinal axis of the filter element 12 into the interior 14 of the filter 11.
- the filter 11 is arranged on the outlet part 15 with a substantially precise fit, so that a first longitudinal end of the filter 11 is supported by the outlet part 15 .
- the filter 11 is pushed 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 thus be drained from the interior 14 of the filter 11 from the collecting container 8 via the outlet channel 15A in the longitudinal direction of the filter 11 (see arrows 16).
- the collecting container 8 has an access opening 17, which is closed with a maintenance cover 18 when installed and in use.
- the access opening 17 provided with the maintenance cover 18 is provided on a second narrow side 8B opposite the first narrow side 8A of the collecting container 8.
- the maintenance cover 18 has a maintenance cover plate 18A, which is mounted on the outside on the second narrow side 8B of the collecting 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 the collecting container 8 or inserted into the collecting container 8 with the maintenance cover 18 removed, for example to replace a used filter 11 with a new filter 11.
- the maintenance cover 18 On the inside facing the collecting space 9, the maintenance cover 18 has a holding part 19, here a cylindrical holding pin, which extends essentially precisely into the interior 14 of the filter 11. Thus, the first longitudinal end of the filter 11 is held by the outlet part 15 and the second longitudinal end of the filter 11 is held by the holding part 19 of the maintenance cover 18.
- 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, in particular on the holding part 19, can have at least one through opening to form a filter bypass, via which unfiltered first fluid can be guided into the interior of the filter 11.
- a valve is preferably provided, in particular in the interior of the holding part 19 of the maintenance cover 18. When the valve is in an open position, the unfiltered first fluid can be guided through the passage opening of the maintenance cover 18 into the interior of the filter 11 and drained away via the outlet 10. When the valve is 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 pressure is reached reaches a predetermined value at outlet 10. This can prevent damage, for example to a pump device connected to the outlet 10.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a heat exchanger (1), more particularly an oil-air cooler, for heat exchange between a first fluid, more particularly hydraulic oil, and a second fluid, more particularly air, having: a number of first flow channels (2) for the passage of the first fluid, a number of second flow channels (3) for the passage of the second fluid, a distribution vessel (7) for splitting the first fluid onto first ends of the first flow channels (2), a collection vessel (8) for collecting the first fluid exiting the second ends of the first flow channels (2), an outlet (10), more particularly for a suction connection (10A), for discharging, more particularly suctioning, the first fluid from the collection vessel (8), a filter (11) with a filter element (12) for filtering the first fluid before entry into the outlet (10), wherein the filter (11) is arranged in the interior of the collection vessel (8) such that the first fluid is guided from outside through the filter element (12) into an interior (14) of the filter (11).
Description
Wärmetauscher Heat exchanger
Die Erfindung betri f ft einen Wärmetauscher, insbesondere Öl- Luft-Kühler, zum Wärmeaustausch zwischen einem ersten Fluid, insbesondere Hydrauliköl , und einem zweiten Fluid, insbesondere Luft , aufweisend : eine Anzahl von ersten Strömungskanälen zum Durchtritt des ersten Fluids , eine Anzahl von zweiten Strömungskanälen zum Durchtritt des zweiten Fluids , einen Verteilerbehälter zur Aufteilung des ersten Fluids auf erste Enden der ersten Strömungskanäle , einen Sammelbehälter zum Sammeln des aus zweiten Enden der ersten Strömungskanäle austretenden ersten Fluids , ein Auslass , insbesondere für einen Sauganschluss , zum Ableiten, insbesondere Absaugen, des ersten Fluids vom Sammelbehälter, ein Filter mit einem Filterelement zum Filtern des ersten Fluids vor einem Eintritt in den Auslass . The invention relates to a heat exchanger, in particular an oil-air cooler, for heat exchange between a first fluid, in particular hydraulic oil, and a second fluid, in particular air, comprising: a number of first flow channels for the passage of the first fluid, a number of second ones flow channels for the passage of the second fluid, a distribution container for dividing the first fluid between first ends of the first flow channels, a collecting container for collecting the first fluid emerging from second ends of the first flow channels, an outlet, in particular for a suction connection, for draining, in particular suction, of the first fluid from the collection container, a filter with a filter element for filtering the first fluid before entering the outlet.
Aus der WO 2005/ 093357 Al ist eine gattungsgemäße Kühlvorrichtung bekannt , bei welcher eine Filtereinheit in Strömungsrichtung des Fluids , hier eines Hydraulikmediums , hinter einer Kühleinheit angeordnet ist . Die Kühleinheit ist als Lamellenkühler ausgeführt . Die Fluid-Leitkanäle münden beidseitig in Fluidsammelräume , die sich entlang der Längsseiten der Kühleinheit erstrecken . Bei diesem Stand der Technik ist die Filtereinheit außerhalb des Fluidsammelraums angeordnet . Das Filterelement ist in einem eigenen Filtergehäuse aufgenommen . Das verschmutzte Fluid durchströmt das Filterelement von außen nach innen, so dass die Fluidabfuhr über das Innere des Filterelements erfolgt . Durch die Abfilterung ist sichergestellt , dass das abgereinigte Fluid nicht in den angeschlossenen Hydraulikeinrichtungen Ablagerungen bilden kann . Durch das Filterelement abgereinigtes Fluid wird über eine Ableitung in ein eigenes Sammelrohr innerhalb des Sammelraumes abgeführt . Weiters sind Anschlussstellen vorgesehen, mit welchen das gereinigte Fluid vom Sammelrohr abgeführt wird . Diese Bauweise ist j edoch konstruktiv sehr aufwendig . Nachteilig ist weiters der große Bauraum, welcher mit der seitlichen Anordnung des Filtergehäuses einhergeht .
Weiterer allgemeiner Stand der Technik ist in DE 10009864 Al und DE 102005054755 B3 gezeigt . A generic cooling device is known from WO 2005/093357 A1, in which a filter unit is arranged behind a cooling unit in the flow direction of the fluid, here a hydraulic medium. The cooling unit is designed as a finned cooler. The fluid guide channels open into fluid collecting spaces on both sides, which extend along the long sides of the cooling unit. In this prior art, the filter unit is arranged outside the fluid collection space. The filter element is housed in its own filter housing. The contaminated fluid flows through the filter element from the outside to the inside, so that the fluid is removed via the interior of the filter element. The filtering ensures that the cleaned fluid cannot form deposits in the connected hydraulic devices. Fluid cleaned by the filter element is discharged via a drain into its own collecting pipe within the collecting space. Furthermore, connection points are provided with which the cleaned fluid is removed from the collecting pipe. However, this design is structurally very complex. Another disadvantage is the large installation space, which is associated with the lateral arrangement of the filter housing. Further general prior art is shown in DE 10009864 A1 and DE 102005054755 B3.
In der CN 203926234U ist ein Kühler gezeigt , bei welchem ein Filter in einem Sammelraum oberhalb der Kühlkanäle hori zontal angeordnet ist . Nachteiligerweise ist j edoch ein eigenes Filtergehäuse vorgesehen . Weiters ist das Filter vergleichsweise kurz , wodurch die Filterwirkung eingeschränkt ist . Das Filter kragt einseitig über eine Montageöf fnung in den Sammelraum aus . Weiters ist nachteilig, dass das gekühlte Fluid auf der Seite der Montageöf fnung abgeleitet werden muss . In CN 203926234U a cooler is shown in which a filter is arranged horizontally in a collecting space above the cooling channels. However, the disadvantage is that a separate filter housing is provided. Furthermore, the filter is comparatively short, which limits the filter effect. The filter protrudes into the collecting space on one side via an assembly opening. Another disadvantage is that the cooled fluid has to be drained away on the side of the assembly opening.
Die CN 103994130A zeigt einen ähnlichen Kühler mit den zuvor beschriebenen Nachteilen . CN 103994130A shows a similar cooler with the disadvantages described previously.
Demgegenüber besteht die Aufgabe der vorliegenden Erfindung darin, zumindest einzelne Nachteile des Standes der Technik zu lindern bzw . zu beheben . Diese Aufgabe wird mit einem Wärmetauscher nach Anspruch 1 gelöst . Bevorzugte Aus führungs formen sind in den abhängigen Ansprüchen angegeben . In contrast, the object of the present invention is to alleviate or eliminate at least individual disadvantages of the prior art. to fix. This task is solved with a heat exchanger according to claim 1. Preferred embodiments are specified in the dependent claims.
Erfindungsgemäß ist das Filter im Inneren des Sammelbehälters derart angeordnet , dass das erste Fluid von außen durch das Filterelement in einen Innenraum des Filters geführt wird . According to the invention, the filter is arranged inside the collecting container in such a way that the first fluid is guided from the outside through the filter element into an interior of the filter.
Vorteilhafterweise kann das erste Fluid von den zweiten Enden der ersten Strömungskanäle im Inneren des Sammelbehälters direkt , d . h . ohne ein Filtergehäuse zu passieren, zur Außenseite des Filterelements strömen, an welcher das erste Fluid gefiltert , d . h . von Partikeln, insbesondere Ablagerungen, befreit wird . Nach der Filterung kann das erste Fluid vom Innenraum des Filters über den Auslass abgeleitet werden . Somit kann eine Filterleitung in den Sammelbehälter integriert werden . Vorteilhafterweise ist der Auslass mit der Innenseite des Filters verbunden, welche stets von Schmutz freigehalten werden kann . Beispielsweise kann kein Schmutz in den Auslass gelangen, wenn das Filter vor der Montage im Inneren des Sammelbehälters auf einer schmutzigen Oberfläche abgelegt worden war . Dadurch kann das
erste Fluid mit hohem Reinheitsgrad am Auslass zur Verfügung gestellt werden . Dies ist insbesondere bei einer Aus führung des Wärmetauschers als Kühler für Hydrauliköl vorteilhaft , welches vom Auslass einer Hydraulikeinrichtung einer Maschine , beispielsweise einer Baumaschine , zugeführt wird . Durch die Anordnung des Filters im Inneren des Sammelbehälters wird eine kompakte , platzsparende Aus führung erzielt . Da das Filterelement in radialer Richtung gesehen von außen nach innen durchströmt wird, kann der Sammelbehälter, welcher insbesondere ein Sammelkasten ist, das Filtergehäuse für das Filterelement bilden . Vorteilhafterweise kann ein eigenes Filtergehäuse um das Filterelement herum entfallen . Der Sammelbehälter weist mehrere Wände , insbesondere zwei Schmalseiten, zwei Längsseiten und eine Oberseite, auf , welche im Inneren einen Sammelraum einschließen, in welchen direkt die zweiten Enden der ersten Strömungskanäle für das erste Fluid einmünden . Bevorzugt erstreckt sich das Filter über der Anordnung aus ersten Strömungskanälen, so dass gedachte vertikale Verlängerungen der ersten Strömungskanäle das Filterelement durchsetzen . Bevorzugt weist das Filter eine hohl zylindrische Grundform auf , mit welcher der Innenraum für die Aufnahme des gefilterten ersten Fluids definiert wird . Advantageously, the first fluid can flow directly from the second ends of the first flow channels inside the collecting container, i.e. H . without passing through a filter housing, flow to the outside of the filter element, where the first fluid is filtered, i.e. H . is freed from particles, especially deposits. After filtering, the first fluid can be drained from the interior of the filter via the outlet. This means that a filter line can be integrated into the collecting container. The outlet is advantageously connected to the inside of the filter, which can always be kept free of dirt. For example, dirt cannot enter the outlet if the filter was placed on a dirty surface inside the collection container before installation. This makes it possible first fluid with a high degree of purity is made available at the outlet. This is particularly advantageous when the heat exchanger is designed as a cooler for hydraulic oil, which is supplied from the outlet of a hydraulic device of a machine, for example a construction machine. By arranging the filter inside the collecting container, a compact, space-saving design is achieved. Since the filter element is flowed through from the outside to the inside when viewed in the radial direction, the collecting container, which is in particular a collecting box, can form the filter housing for the filter element. Advantageously, a separate filter housing around the filter element can be omitted. The collecting container has a plurality of walls, in particular two narrow sides, two long sides and a top, which enclose a collecting space inside into which the second ends of the first flow channels for the first fluid open directly. The filter preferably extends over the arrangement of first flow channels, so that imaginary vertical extensions of the first flow channels pass through the filter element. The filter preferably has a hollow cylindrical basic shape, with which the interior space is defined for receiving the filtered first fluid.
Durch die Anordnung des Filters kann eine Verschmutzung der Fluidleitungen, insbesondere von Ölleitungen, und damit des gesamten Systems beim Filterwechsel vermieden werden . The arrangement of the filter can prevent contamination of the fluid lines, especially oil lines, and thus of the entire system when changing the filter.
Für die Zwecke dieser Of fenbarung beziehen sich die Orts- und Richtungsangaben, wie „oben" , „unten" , „hori zontal" , „vertikal" , auf den bestimmungsgemäßen Gebrauchs zustand des Wärmetauschers . For the purposes of this disclosure, the location and direction information, such as "top", "bottom", "horizontal", "vertical", refers to the intended use of the heat exchanger.
Bei einer bevorzugten Aus führungs form ist das Filterelement im Inneren des Sammelbehälters , insbesondere über seine gesamte Länge ( d . h . Erstreckung in Richtung der Längsachse ) , freiliegend angeordnet . Somit kann das über die zweiten Enden der ersten Strömungskanäle in den Verteilerbehälter eintretende erste Fluid direkt zur Außenseite des Filterelements strömen, an der Außenseite des Filterelements gefiltert und durch das Filterelement in den Innenraum innerhalb des Filterelements gelangen . Vorteilhafterweise bildet der Verteilerbehälter das Filtergehäuse , in welchem das Filterelement freiliegend angeordnet ist . Somit kann
auf ein vom Verteilerbehälter gesondertes Filtergehäuse verzichtet werden . In a preferred embodiment, the filter element is arranged exposed inside the collecting container, in particular over its entire length (i.e. extension in the direction of the longitudinal axis). Thus, the first fluid entering the distribution container via the second ends of the first flow channels can flow directly to the outside of the filter element, be filtered on the outside of the filter element and pass through the filter element into the interior space within the filter element. The distribution container advantageously forms the filter housing in which the filter element is arranged exposed. Thus can There is no need for a filter housing separate from the distribution container.
Um das erste Fluid, vorzugsweise Hydrauliköl , abzuführen und beispielsweise einer Baumaschine zur Verfügung zu stellen, weist der Auslass bei einer bevorzugten Aus führungs form ein vorzugsweise im Wesentlichen zylindrisches Auslassteil , insbesondere einen Auslassstutzen, auf , welches in den Innenraum des Filters ragt . Vorteilhafterweise kann das Anschlussteil durch die Verbindung mit dem Innenraum des Filters schlank gebaut werden . Der Innenraum ist vorzugsweise in Umfangsrichtung vollständig von dem Filterelement umgeben . Somit kann das erste Fluid von radial außerhalb des Filterelements durch Filterporen des Filterelements in den Innenraum des Filters strömen, und von dort über das Auslassteil aus dem Sammelbehälter herausgeführt werden . Bei einer bevorzugten Aus führungs form ist das Filterelement röhrenförmig, insbesondere hohl zylindrisch, wobei das Auslassteil entsprechend dem Filterelement zylindrisch ausgeführt . Das Auslassteil weist einen Auslasskanal auf , mit dem das erste Fluid vom Sammelbehälter nach außen abgeleitet wird . Der Auslasskanal kann mit einer Saugleitung verbunden sein, um das erste Fluid vom Innenraum des Filters über das Auslassteil in die Saugleitung außerhalb des Sammelbehälters abzusaugen . In order to remove the first fluid, preferably hydraulic oil, and make it available to a construction machine, for example, in a preferred embodiment the outlet has a preferably substantially cylindrical outlet part, in particular an outlet connection, which projects into the interior of the filter. Advantageously, the connecting part can be made slim through the connection to the interior of the filter. The interior is preferably completely surrounded by the filter element in the circumferential direction. The first fluid can thus flow from radially outside the filter element through filter pores of the filter element into the interior of the filter, and from there be led out of the collecting container via the outlet part. In a preferred embodiment, the filter element is tubular, in particular hollow cylindrical, with the outlet part being cylindrical in accordance with the filter element. The outlet part has an outlet channel with which the first fluid is drained from the collecting container to the outside. The outlet channel can be connected to a suction line in order to suck the first fluid from the interior of the filter via the outlet part into the suction line outside the collecting container.
Bei einer bevorzugten Aus führungs form kann am Anschlussteil ein Sauganschluss angeschlossen sein, bevorzugt in verschiedenen Orientierungen zur Strömungsrichtung innerhalb des Anschlussteils . In a preferred embodiment, a suction connection can be connected to the connection part, preferably in different orientations to the flow direction within the connection part.
Zur stabilen Halterung und zum sicheren Einbau des Filters mittels des Auslassteils ist es günstig, wenn das Filter im Wesentlichen passgenau auf dem Auslassteil angeordnet , insbesondere auf das Auslassteil auf geschoben, i st . Bei dieser Aus führungsform übernimmt das Auslassteil einerseits die Ableitung des ersten Fluids und andererseits die Halterung des Filterelements , vorzugsweise in einem Abstand zu den zweiten Enden der ersten Strömungskanäle . For stable mounting and safe installation of the filter by means of the outlet part, it is advantageous if the filter is arranged essentially precisely on the outlet part, in particular pushed onto the outlet part. In this embodiment, the outlet part, on the one hand, takes over the discharge of the first fluid and, on the other hand, holds the filter element, preferably at a distance from the second ends of the first flow channels.
Bei einer bevorzugten Aus führungs form ist ein Wartungsdeckel zum
Verschließen einer ins Innere des Sammelbehälters führenden Zugangsöf fnung zum Austauschen des Filters vorgesehen ist . Durch Abnehmen des Wartungsdeckels wird eine Zugangsöf fnung freigelegt , welche so dimensioniert ist , dass das Filter durch die Zugangsöf fnung in den Sammelbehälter eingeführt bzw . aus dem Sammelbehälter herausgenommen werden kann . Der Wartungsdeckel ist bevorzugt über eine lösbare Verbindung, beispielsweise über eine Schraubverbindung, mit dem Sammelbehälter verbunden . In a preferred embodiment, there is a maintenance cover Closing an access opening leading into the interior of the collecting container is provided for replacing the filter. By removing the maintenance cover, an access opening is exposed, which is dimensioned so that the filter can be inserted into the collection container through the access opening. can be removed from the collection container. The maintenance cover is preferably connected to the collecting container via a detachable connection, for example via a screw connection.
Um das Filter in der gewünschten Position innerhalb des Sammelbehälters zu halten, ist es günstig, wenn der Wartungsdeckel ein in den Innenraum des Filters ragendes Halteteil , insbesondere einen Haltezapfen, zur Halterung des Filters aufweist . Besonders bevorzugt ist es , wenn das Filter einerseits über das Auslassteil und andererseits über das Halteteil in Position gehalten ist . Bei einer zylindrischen Aus führung des Filterelements ist es günstig, wenn das Halteteil als zylindrischer Haltezapfen ausgeführt ist , welcher in den Innenraum des Filters hineinsteht . Darüber hinaus ist es günstig, wenn das Filter nicht nur mit einer einzigen vorgegebenen Einbaurichtung im Sammelbehälter montierbar ist , sondern in zwei um 180 ° gewendeten Einbaustellungen . In order to hold the filter in the desired position within the collecting container, it is advantageous if the maintenance cover has a holding part, in particular a holding pin, which projects into the interior of the filter for holding the filter. It is particularly preferred if the filter is held in position via the outlet part on the one hand and the holding part on the other hand. With a cylindrical design of the filter element, it is advantageous if the holding part is designed as a cylindrical holding pin, which protrudes into the interior of the filter. In addition, it is advantageous if the filter can not only be installed in a single predetermined installation direction in the collecting container, but in two installation positions turned by 180 °.
Wenn der Wartungsdeckel und der Auslass an gegenüberliegenden Seiten, insbesondere an zwei gegenüberliegenden Schmalseiten, des Sammelbehälters vorgesehen sind, kann das Auslassteil besonders wirksam vor einer Verschmutzung beim Ein- und Ausbau des Filters geschützt werden . If the maintenance cover and the outlet are provided on opposite sides, in particular on two opposite narrow sides, of the collecting container, the outlet part can be particularly effectively protected from contamination when installing and removing the filter.
Durch die räumliche Trennung des Wartungsdeckels vom (Öl- ) Auslass , insbesondere auch von einem damit verbundenen Sauganschluss , kann die Leitungs führung am Fahrzeug optimiert werden . Die Zu- und Ableitungen können insbesondere an der der Fahrzeugachse zugewandten Seite angebracht werden, was Leitungslängen reduziert und eine kompaktere und geschütztere Bauweise ermöglicht . Gleichzeitig ist die Servicefreundlichkeit unverändert wiedergegeben, weil der Wartungsdeckel an der Fahrzeugaußenseite liegt und somit für Wartungsarbeiten leicht erreichbar ist . Das Verhindern einer Verschmutzung beim Filterwechsel wurde oben bereits angesprochen .
Bei einer bevorzugten Aus führungs form ist ein erstes Längsende des Filters vom Auslassteil und ein zweites Längsende des Filters vom Halteteil des Wartungsdeckels gehalten . Mit dieser Ausführung wird eine stabile Halterung des Filters an gegenüberliegenden Längsenden erreicht . Vorteilhaft ist weiters , dass eine fehlerhafte Positionierung des Filters im Sammelbehälter zuverlässig vermieden wird, da der Wartungsdeckel nur dann am Sammelbehälter angebracht werden kann, wenn das Filter über das Halteteil am Wartungsdeckel gelagert und damit korrekt positioniert ist . By spatially separating the maintenance cover from the (oil) outlet, in particular also from an associated suction connection, the line routing on the vehicle can be optimized. The supply and discharge lines can be attached in particular on the side facing the vehicle axle, which reduces line lengths and enables a more compact and protected design. At the same time, the ease of servicing remains unchanged because the maintenance cover is located on the outside of the vehicle and is therefore easily accessible for maintenance work. Preventing contamination when changing filters has already been discussed above. In a preferred embodiment, a first longitudinal end of the filter is held by the outlet part and a second longitudinal end of the filter is held by the holding part of the maintenance cover. With this design, a stable holder of the filter is achieved at opposite longitudinal ends. It is also advantageous that incorrect positioning of the filter in the collection container is reliably avoided, since the maintenance cover can only be attached to the collection container if the filter is stored on the maintenance cover via the holding part and is therefore positioned correctly.
Bei einer bevorzugten Aus führungs form weist der Wartungsdeckel , insbesondere am Halteteil , zur Ausbildung eines Filterbypasses zumindest eine Durchgangsöf fnung auf , über welche ungefiltertes erstes Fluid in das Innere des Filters geführt werden kann . Vorzugsweise ist ein Ventil , insbesondere im Inneren des Halteteils des Wartungsdeckels , vorgesehen . In einer Of fenstellung des Ventils kann das ungefilterte erste Fluid durch die Durchgangsöf fnung des Wartungsdeckels in den Innenraum des Filters geführt und über den Auslass abgeleitet werden . In einer Schließstellung des Ventils kann das ungefilterte erste Fluid nicht in den Innenraum des Filters gelangen . Vorzugsweise wird das Ventil von der Schließ- in die Of fenstellung überführt , wenn ein Druck am Auslass einen vorgegebenen Wert erreicht . Das kann beispielsweise dann der Fall sein, wenn das erste Fluid das Filterelement nicht mehr passieren kann . Durch Freigabe des Filterbypasses kann sichergestellt werden, dass , auch ungefiltertes , erstes Fluid am Auslass bereitgestellt wird . In a preferred embodiment, the maintenance cover, in particular on the holding part, has at least one through opening to form a filter bypass, through which unfiltered first fluid can be guided into the interior of the filter. A valve is preferably provided, in particular in the interior of the holding part of the maintenance cover. When the valve is in the open position, the unfiltered first fluid can be guided through the passage opening of the maintenance cover into the interior of the filter and drained away via the outlet. When the valve is in a closed position, the unfiltered first fluid cannot enter the interior of the filter. Preferably, the valve is transferred from the closed to the open position when a pressure at the outlet reaches a predetermined value. This can be the case, for example, if the first fluid can no longer pass through the filter element. By releasing the filter bypass it can be ensured that the first fluid, even unfiltered, is provided at the outlet.
Bei einer bevorzugten Aus führungs form ist die Längsachse des Filterelements im Wesentlichen hori zontal angeordnet . Bei dieser Ausführung können die ersten Strömungskanäle von unten nach oben durchströmt werden . Der Sammelbehälter erstreckt sich quer zu den ersten Strömungskanälen oberhalb der ersten Strömungskanäle . Das Filter ist hori zontal über und in einem Abstand zu den zweiten Enden der Strömungskanäle angeordnet . In a preferred embodiment, the longitudinal axis of the filter element is arranged essentially horizontally. In this version, the first flow channels can be flowed through from bottom to top. The collecting container extends transversely to the first flow channels above the first flow channels. The filter is arranged horizontally above and at a distance from the second ends of the flow channels.
Vorzugsweise ist der Sammelbehälter quaderförmig mit zwei verti-
kalen Schmalseiten, zwei vertikalen Längsseiten und einer horizontalen Oberseite ausgebildet . Die Länge des Sammelbehälters ist die hori zontale Erstreckung parallel zu den Längsseiten . Die Breite des Sammelbehälters ist die hori zontale Erstreckung parallel zu den Schmalseiten . Die Höhe des Sammelbehälters ist die vertikale Erstreckung des Sammelbehälters . The collecting container is preferably cuboid with two vertical cal narrow sides, two vertical long sides and a horizontal top. The length of the collecting container is the horizontal extension parallel to the long sides. The width of the collecting container is the horizontal extent parallel to the narrow sides. The height of the collecting container is the vertical extent of the collecting container.
Bevorzugt erstreckt sich das Filterelement über im Wesentlichen die gesamte Länge des Sammelbehälters . Dadurch kann eine besonders wirksame Filterung des ersten Fluids erreicht werden . The filter element preferably extends over essentially the entire length of the collecting container. This allows particularly effective filtering of the first fluid to be achieved.
In einer Aus führungs form bestehen der Sammelbehälter, und/oder der Wartungsdeckel aus Metall , insbesondere aus Aluminium, gefertigt . Das Filter kann eine Filterhalterstruktur aus Metall aufweisen . Das Filterelement mit den Filterporen kann aus Papier und/oder Metall und/oder Mikrofaser gefertigt sein . In one embodiment, the collecting container and/or the maintenance cover are made of metal, in particular aluminum. The filter may have a filter holder structure made of metal. The filter element with the filter pores can be made of paper and/or metal and/or microfiber.
Die Erfindung wird nachstehend anhand eines in den Zeichnungen dargestellten Aus führungsbeispiels weiter erläutert . The invention is further explained below using an exemplary embodiment shown in the drawings.
Fig . 1 bis 4 zeigen verschiedene Ansichten eines erfindungsgemäßen Wärmetauschers , welcher als Öl-Luft-Kühler zur Bereitstellung gekühlten Hydrauliköls für eine Saugleitung ausgebildet ist . Fig. 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 zeigt eine auseinandergezogene Ansicht von Teilen des Kühlers . Fig. 5 shows an exploded view of parts of the cooler.
Fig . 6 zeigt eine Schnittansicht des Kühlers im Bereich des Sammelbehälters . Fig. 6 shows a sectional view of the cooler in the area of the collecting container.
Fig . 1 bis 4 zeigen einen Wärmetauscher 1 , welcher in der gezeigten Aus führung als Kühler zum Abkühlen eines ersten Fluids , hier Hydrauliköl , durch Wärmeaustausch mit einem zweiten Fluid, hier Luft , ausgebildet ist . Der Wärmetauscher 1 weist eine Vielzahl von ersten Strömungskanälen 2 auf , welche sich bevorzugt parallel zueinander, beispielsweise in vertikaler Richtung, erstrecken . Das erste Fluid strömt von ersten (unteren) Enden zu zweiten ( oberen) Enden der ersten Strömungskanäle 2 nach oben .
In Zwischenräumen zwischen den ersten Strömungskanälen 2 sind eine Viel zahl von zweiten Strömungskanälen 3 ausgebildet , welche von dem zweiten Fluid, hier Kühlluft , durchströmt werden . Die Kühlluft wird mit Hil fe eines Lüfters 4 durch die zweiten Strömungskanäle 3 geführt . In der gezeigten Aus führung weist der Lüfter 5 ein Lüfterrad 5 auf , welches um eine Achse 5A rotiert . Am unteren Ende des Wärmetauschers 1 wird das erste Fluid über einen Einlass 6 , der im gezeigten Beispiel ein Öleinlass ist , in einen Verteilerbehälter 7 geführt . Der Verteilerbehälter 7 schließt im Inneren einen Verteilerraum ein, welchem das erste Fluid über den Einlass 6 zugeführt wird . Die ersten Strömungs- bzw . Fluidkanäle 2 münden in den gemeinsamen Verteilerraum des Verteilerbehälters 7 , so dass das erste Fluid vom Vertei lerraum nach oben durch die ersten Strömungskanäle 3 geführt wird . Oberhalb der ersten Strömungskanäle 2 ist ein Sammelbehälter 8 angeordnet , welcher im Inneren einen einheitlichen, d . h . nicht unterteilten, Sammelraum 9 einschließt , in welchen die zweiten Enden der ersten Strömungskanäle 2 münden . Der Sammelbehälter 8 weist eine erste Schmalseite 8A, eine zweite Schmalseite 8B, zwei Längsseiten 8C und eine Oberseite 8D auf . Der besseren Übersicht halber ist der Sammelbehälter 8 in den Fig . 5 und 6 mit geringerer Höhe und vereinfacht dargestellt Unterseitig zu den ersten Strömungskanälen 2 hin ist der Sammelbehälter 8 offen . Fig. 1 to 4 show a heat exchanger 1, which in the embodiment shown is designed as a cooler for cooling a first fluid, here hydraulic oil, through 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 one another, for example in the vertical direction. The first fluid flows upward from first (lower) ends to second (upper) ends of the first flow channels 2. In the spaces between the first flow channels 2, a large number 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 with the help of a fan 4. In the embodiment shown, the fan 5 has a fan wheel 5 which rotates about an axis 5A. At the lower end of the heat exchanger 1, the first fluid is guided into a distribution container 7 via an inlet 6, which in the example shown is an oil inlet. The distribution container 7 includes a distribution space inside, to which the first fluid is supplied via the inlet 6. The first flow or Fluid channels 2 open into the common distribution space of the distribution container 7, so that the first fluid is guided upwards from the distribution space through the first flow channels 3. Above the first flow channels 2, a collecting container 8 is arranged, which has a uniform, i.e. H . not subdivided, collecting space 9, into which the second ends of the first flow channels 2 open. The collecting container 8 has a first narrow side 8A, a second narrow side 8B, two long sides 8C and a top 8D. For the sake of clarity, the collecting container 8 is shown in FIGS. 5 and 6 with a lower height and shown in simplified form. The collecting container 8 is open on the underside towards the first flow channels 2.
Der Wärmetauscher 1 weist zudem einen, vorzugsweise genau einen, Auslass 10 zum Ableiten des gekühlten ersten Fluids vom Sammelbehälter 8 auf . In der gezeigten Aus führung ist der Auslass 10 mit einem Sauganschluss 10A verbunden, welcher über eine (nicht gezeigte ) Saugleitung mit einer Hydraulikleitung einer Baumaschine (nicht gezeigt ) verbunden sein kann . The heat exchanger 1 also has one, preferably exactly one, outlet 10 for discharging the cooled first fluid from the collecting container 8. In the embodiment shown, the outlet 10 is connected to a suction connection 10A, which can be connected to a hydraulic line of a construction machine (not shown) via a suction line (not shown).
Der Wärmetauscher 1 weist zudem Füße 22 auf , mit welchen der Wärmetauscher auf einer (hori zontalen) Bodenfläche abgestellt werden kann . Die Füße 22 können Montageöf fnungen 23 aufweisen, mit welchen der Wärmetauscher 1 auf der Bodenfläche fixiert werden kann . The heat exchanger 1 also has feet 22 with which the heat exchanger can be placed on a (horizontal) floor surface. The feet 22 can have mounting openings 23 with which the heat exchanger 1 can be fixed on the floor surface.
Weiters ist ein Filter 11 vorgesehen, welches dazu eingerichtet ist, Feststof fpartikel vom ersten Fluid abzutrennen, bevor das
erste Fluid in den Sauganschluss 10A eintritt . Das Filter 11 ist vollständig im Inneren des Sammelbehälters 8 , d . h . innerhalb des von den Wänden des Sammelbehälters 8 begrenzten Sammelraums 9 , angeordnet . Furthermore, a filter 11 is provided, which is designed to separate solid particles from the first fluid before that first fluid enters the suction port 10A. The filter 11 is completely inside the collecting container 8, i.e. H . arranged within the collecting space 9 delimited by the walls of the collecting container 8.
In der gezeigten Aus führung weist das Filter 11 ein Filterelement 12 mit einer hohl zylindrischen Grundform auf . In der gezeigten Aus führung weist das Filterelement 12 Filterfalten auf . Das Filterelement 12 weist eine Viel zahl von Filterporen auf , welche von dem ersten Fluid passiert werden können . Die Längsachse 11A des Filterelements 12 erstreckt sich hori zontal in Längsrichtung des Sammelbehälters 8 , d . h . von der ersten Schmalseite 8A zur zweiten Schmalseite 8B des Sammelbehälters 8 . In the embodiment shown, the filter 11 has a filter element 12 with a hollow cylindrical basic shape. In the embodiment shown, the filter element has 12 filter folds. The filter element 12 has a large number 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 collecting container 8, i.e. H . from the first narrow side 8A to the second narrow side 8B of the collecting container 8.
Das Filter 11 ist im Inneren des Sammelbehälters 8 derart freiliegend, d . h . ohne umgebendes Filtergehäuse , angeordnet , dass das erste Fluid zuerst auf die Außenseite des Filterelements 12 trif ft (vgl . Pfeile 13 in Fig . 6 ) . Dadurch werden die Schmutzpartikel , beispielsweise Schlauch- bzw . Pumpenabrieb und Luftverschmutzung, an der Außenseite des Filterelements 12 abgegeben werden . Das erste Fluid durchströmt die Filterporen des Filterelements 12 , in radialer Richtung bezogen auf die Längsachse 11A des Filterelements 12 gesehen, von außen nach innen . Somit gelangt das erste Fluid nach der Filterung an der Außenseite des Filterelements 12 in einen Innenraum 14 , welchen das Filterelement 12 im Inneren einschließt . Der Auslass 10 weist ein Auslassteil 15 auf , welches in der gezeigten Aus führung als zylindrischer Auslassstutzen ausgebildet ist , der sich von einer ersten Schmalseite 8A des Sammelbehälters 8 in Richtung der Längsachse des Filterelements 12 in den Innenraum 14 des Filters 11 erstreckt . Das Filter 11 ist im Wesentlichen passgenau auf dem Auslassteil 15 angeordnet , so dass ein erstes Längsende des Filters 11 vom Auslassteil 15 gestützt ist . In der gezeigten Ausführung ist das Filter 11 werkzeuglos auf das Auslassteil 15 auf geschoben . Das Auslassteil 15 weist einen Auslasskanal 15A auf , welcher an den Innenraum 14 des Filterelements 12 anschließt . Somit kann das erste Fluid in Längsrichtung des Filters 11 (vgl . Pfeile 16 ) vom Innenraum 14 des Filters 11 über den Auslasskanal 15A aus dem Sammelbehälter 8 abgeleitet werden .
Der Sammelbehälter 8 weist eine Zugangsöf fnung 17 auf , welche im montierten Gebrauchs zustand mit einem Wartungsdeckel 18 verschlossen ist . In der gezeigten Aus führung ist die mit dem Wartungsdeckel 18 versehene Zugangsöf fnung 17 an einer zweiten Schmalseite 8B gegenüberliegend der ersten Schmalseite 8A des Sammelbehälters 8 vorgesehen . Der Wartungsdeckel 18 weist eine Wartungsdeckelplatte 18A auf , welche außenseitig an der zweiten Schmalseite 8B des Sammelbehälters 8 , in der gezeigten Aus führung mit Schrauben 18B, montiert ist . Die Zugangsöffnung 17 ist größer als der Querschnitt des Filters 11 , so dass das Filter 11 bei abgenommenem Wartungsdeckel 18 aus dem Sammelbehälter 8 herausgenommen oder in den Sammelbehälter 8 eingeführt werden kann, beispielsweise zum Austausch eines verbrauchten Filters 11 gegen ein neues Filter 11 . Der Wartungsdeckel 18 weist an der dem Sammelraum 9 zugewandten Innenseite ein Halteteil 19 , hier einen zylindrischen Haltezapfen, auf , welches sich im Wesentlichen passgenau in den Innenraum 14 des Filters 11 erstreckt . Somit wird das erste Längsende des Filters 11 vom Auslassteil 15 und das zweite Längsende des Filters 11 vom Halteteil 19 des Wartungsdeckels 18 gehalten . The filter 11 is exposed inside the collecting container 8, i.e. H . without a surrounding filter housing, arranged so that the first fluid first hits the outside of the filter element 12 (cf. arrows 13 in FIG. 6). This removes the dirt particles, such as 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, viewed in the radial direction with respect to the longitudinal axis 11A of the filter element 12, from the outside to the inside. Thus, after filtering, the first fluid passes on the outside of the filter element 12 into an interior space 14, which the filter element 12 encloses inside. The outlet 10 has an outlet part 15, which in the embodiment shown is designed as a cylindrical outlet connection which extends from a first narrow side 8A of the collecting container 8 in the direction of the longitudinal axis of the filter element 12 into the interior 14 of the filter 11. The filter 11 is arranged on the outlet part 15 with a substantially precise fit, 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 pushed 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 thus be drained from the interior 14 of the filter 11 from the collecting container 8 via the outlet channel 15A in the longitudinal direction of the filter 11 (see arrows 16). The collecting container 8 has an access opening 17, which is closed with a maintenance cover 18 when installed and in use. In the embodiment shown, the access opening 17 provided with the maintenance cover 18 is provided on a second narrow side 8B opposite the first narrow side 8A of the collecting container 8. The maintenance cover 18 has a maintenance cover plate 18A, which is mounted on the outside on the second narrow side 8B of the collecting 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 the collecting container 8 or inserted into the collecting container 8 with the maintenance cover 18 removed, for example to replace a used filter 11 with a new filter 11. On the inside facing the collecting space 9, the maintenance cover 18 has a holding part 19, here a cylindrical holding pin, which extends essentially precisely into the interior 14 of the filter 11. Thus, the first longitudinal end of the filter 11 is held by the outlet part 15 and the second longitudinal end of the filter 11 is held by the holding part 19 of the maintenance cover 18.
Der Wartungsdeckel 18 weist zumindest eine in den Innenraum 14 des Filters 11 führende Durchtrittsöf fnung 20 auf , in welcher beispielsweise eine Sensoreinheit 21 , insbesondere ein Verschmutzungsanzeiger, angeordnet sein kann, mit der ein Betriebsparameter, insbesondere ein Verschmutzungsgrad des Filters 11 , gemessen werden kann . 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.
Darüber hinaus kann der Wartungsdeckel 18 , insbesondere am Halteteil 19 , zur Ausbildung eines Filterbypasses zumindest eine Durchgangsöf fnung aufweisen, über welche ungefiltertes erstes Fluid in das Innere des Filters 11 geführt werden kann . Vorzugsweise ist ein Ventil , insbesondere im Inneren des Halteteils 19 des Wartungsdeckels 18 , vorgesehen . In einer Of fenstellung des Ventils kann das ungefilterte erste Fluid durch die Durchgangsöf fnung des Wartungsdeckels 18 in den Innenraum des Filters 11 geführt und über den Auslass 10 abgeleitet werden . In einer Schließstellung des Ventils kann das ungefilterte erste Fluid nicht in den Innenraum des Filters 11 gelangen . Vorzugsweise wird das Ventil in die Of fenstellung geschaltet , wenn ein Druck
am Auslass 10 einen vorgegebenen Wert erreicht . Dadurch kann ein Schaden, beispielsweise an einer mit dem Auslass 10 verbundenen Pumpvorrichtung, vermieden werden .
In addition, the maintenance cover 18, in particular on the holding part 19, can have at least one through opening to form a filter bypass, via which unfiltered first fluid can be guided into the interior of the filter 11. A valve is preferably provided, in particular in the interior of the holding part 19 of the maintenance cover 18. When the valve is in an open position, the unfiltered first fluid can be guided through the passage opening of the maintenance cover 18 into the interior of the filter 11 and drained away via the outlet 10. When the valve is in a closed position, the unfiltered first fluid cannot enter the interior of the filter 11. Preferably the valve is switched to the open position when pressure is reached reaches a predetermined value at outlet 10. This can prevent damage, for example to a pump device connected to the outlet 10.
Bezugs zi f fernliste : Reference number remote list:
1 Wärmetauscher 1 heat exchanger
2 erste Strömungskanäle für Öl 2 first flow channels for oil
3 zweite Strömungskanäle für Luft 3 second flow channels for air
4 Lüfter 4 fans
5 Lüfterrad 5 fan wheel
5A Achse 5A axis
6 Einlass 6 inlet
7 Verteilerbehälter 7 distribution containers
8 Sammelbehälter 8 collection containers
8A ersten Schmalseite des Sammelbehälters8A first narrow side of the collection container
8B zweiten Schmalseite des Sammelbehälters8B second narrow side of the collecting container
8C Längsseiten des Sammelbehälters 8C Long sides of the collecting container
8D Oberseite des Sammelbehälters 8D Top of the collection container
9 Sammelraum 9 collection room
10 Auslass 10 outlet
10A Sauganschluss 10A suction connection
11 Filter 11 filters
11A Längsachse 11A longitudinal axis
12 Filterelement 12 filter element
13 Pfeile 13 arrows
14 Innenraum 14 interior
15 Auslassteil 15 outlet part
15A Auslasskanal 15A outlet channel
16 Pfeile 16 arrows
17 Zugangsöf fnung 17 Access opening
18 Wartungsdeckel 18 maintenance cover
18A Wartungsdeckelplatte 18A service cover plate
19 Halteteil 19 holding part
20 Durchtrittsöf fnung 20 passage opening
21 Sensoreinheit 21 sensor unit
22 Füße 22 feet
23 Montageöf fnungen
23 mounting openings
Claims
1. Wärmetauscher (1) , insbesondere Öl-Luft-Kühler, zum Wärmeaustausch zwischen einem ersten Fluid, insbesondere Hydrauliköl, und einem zweiten Fluid, insbesondere Luft, aufweisend: eine Anzahl von ersten Strömungskanälen (2) zum Durchtritt des ersten Fluids, eine Anzahl von zweiten Strömungskanälen (3) zum Durchtritt des zweiten Fluids, einen Verteilerbehälter (7) zur Aufteilung des ersten Fluids auf erste Enden der ersten Strömungskanäle (2) , einen Sammelbehälter (8) zum Sammeln des aus zweiten Enden der ersten Strömungskanäle (2) austretenden ersten Fluids, ein Auslass (10) , insbesondere für einen Sauganschluss1. Heat exchanger (1), in particular oil-air cooler, for heat exchange between a first fluid, in particular hydraulic oil, and a second fluid, in particular air, comprising: a number of first flow channels (2) for the passage of the first fluid, a number of second flow channels (3) for the passage of the second fluid, a distribution container (7) for dividing the first fluid between first ends of the first flow channels (2), a collecting container (8) for collecting the emerging from second ends of the first flow channels (2). first fluid, an outlet (10), in particular for a suction connection
(10A) , zum Ableiten, insbesondere Absaugen, des ersten Fluids vom Sammelbehälter (8) , ein Filter (11) mit einem Filterelement (12) zum Filtern des ersten Fluids vor einem Eintritt in den Auslass (10) , dadurch gekennzeichnet, dass das Filter (11) im Inneren des Sammelbehälters (8) derart angeordnet ist, dass das erste Fluid von außen durch das Filterelement (12) in einen Innenraum (14) des Filters (11) geführt wird . (10A), for draining, in particular suctioning, the first fluid from the collecting container (8), a filter (11) with a filter element (12) for filtering the first fluid before entering the outlet (10), characterized in that Filter (11) is arranged inside the collecting container (8) in such a way that the first fluid is guided from the outside through the filter element (12) into an interior (14) of the filter (11).
2. Wärmetauscher (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Filterelement (12) im Inneren des Sammelbehälters (8) freiliegend angeordnet ist. 2. Heat exchanger (1) according to claim 1, characterized in that the filter element (12) is arranged exposed inside the collecting container (8).
3. Wärmetauscher (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Auslass (10) ein vorzugsweise im Wesentlichen zylindrisches Auslassteil (15) , insbesondere einen Auslassstutzen, aufweist, welches in den Innenraum (14) des Filters (11) ragt . 3. Heat exchanger (1) according to claim 1 or 2, characterized in that the outlet (10) has a preferably substantially cylindrical outlet part (15), in particular an outlet connection, which projects into the interior (14) of the filter (11). .
4. Wärmetauscher (1) nach Anspruch 3, dadurch gekennzeichnet, dass das Filter (11) im Wesentlichen passgenau auf dem Auslassteil (15) angeordnet, insbesondere auf das Auslassteil (15) aufgeschoben, ist. 4. Heat exchanger (1) according to claim 3, characterized in that the filter (11) is arranged essentially precisely on the outlet part (15), in particular pushed onto the outlet part (15).
5. Wärmetauscher (1) nach einem der Ansprüche 1 bis 4, dadurch
gekennzeichnet, dass ein Wartungsdeckel (18) zum Verschließen einer ins Innere des Sammelbehälters (8) führenden Zugangsöffnung (17) zum Austauschen des Filters (11) vorgesehen ist. 5. Heat exchanger (1) according to one of claims 1 to 4, characterized characterized in that a maintenance cover (18) is provided for closing an access opening (17) leading into the interior of the collecting container (8) for replacing the filter (11).
6. Wärmetauscher (1) nach Anspruch 5, dadurch gekennzeichnet, dass der Wartungsdeckel (18) ein in den Innenraum (14) des Filters (11) ragendes Halteteil (19) , insbesondere einen Haltezapfen, zur Halterung des Filters (11) aufweist. 6. Heat exchanger (1) according to claim 5, characterized in that the maintenance cover (18) has a holding part (19) projecting into the interior (14) of the filter (11), in particular a holding pin, for holding the filter (11).
7. Wärmetauscher (1) nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Wartungsdeckel (18) und der Auslass (10) an gegenüberliegenden Seiten des Sammelbehälters (8) vorgesehen sind . 7. Heat exchanger (1) according to claim 5 or 6, characterized in that the maintenance cover (18) and the outlet (10) are provided on opposite sides of the collecting container (8).
8. Wärmetauscher (1) nach Anspruch 7, dadurch gekennzeichnet, dass ein erstes Längsende des Filters (11) vom Auslassteil (15) und ein zweites Längsende des Filters (11) vom Halteteil (19) des Wartungsdeckels (18) gehalten ist. 8. Heat exchanger (1) according to claim 7, characterized in that a first longitudinal end of the filter (11) is held by the outlet part (15) and a second longitudinal end of the filter (11) by the holding part (19) of the maintenance cover (18).
9. Wärmetauscher (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Längsachse (11A) des Filterelements (12) im Wesentlichen horizontal angeordnet ist.
9. Heat exchanger (1) according to one of claims 1 to 8, characterized in that the longitudinal axis (11A) of the filter element (12) is arranged essentially horizontally.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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ATA50556/2022 | 2022-07-22 | ||
ATA50556/2022A AT525658B1 (en) | 2022-07-22 | 2022-07-22 | cooler |
Publications (1)
Publication Number | Publication Date |
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WO2024016044A1 true WO2024016044A1 (en) | 2024-01-25 |
Family
ID=86721585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/AT2023/060245 WO2024016044A1 (en) | 2022-07-22 | 2023-07-21 | Heat exchanger |
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AT (1) | AT525658B1 (en) |
WO (1) | WO2024016044A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10009864A1 (en) | 2000-03-01 | 2001-09-13 | Fluidtech Gmbh | Cooling device esp. for hydraulic oil has cooling unit and filter unit forming integral part, and fitted into single housing |
WO2005093357A1 (en) | 2004-03-28 | 2005-10-06 | Hydac S.A. | Cooling device |
DE102005054755B3 (en) | 2005-11-17 | 2007-02-08 | Hydac Fluidtechnik Gmbh | Cooling device comprises fluid collecting chamber with uniform flow cross-section arranged between filter unit and cooling unit and partially closed by concave curved limiting wall opposite filter unit |
CN103994130A (en) | 2014-06-05 | 2014-08-20 | 爱克奇换热技术(太仓)有限公司 | Cooling equipment used in hydraulic working circuit |
CN203926234U (en) | 2014-07-16 | 2014-11-05 | 爱克奇换热技术(太仓)有限公司 | Transit mixer cooling unit |
US20150041414A1 (en) * | 2013-08-09 | 2015-02-12 | Ledwell & Son Enterprises, Inc. | Hydraulic fluid cooler and filter |
IT202000032120A1 (en) * | 2020-12-23 | 2022-06-23 | Ufi Filters Spa | OIL TEMPERATURE ADJUSTMENT ASSEMBLY |
-
2022
- 2022-07-22 AT ATA50556/2022A patent/AT525658B1/en active
-
2023
- 2023-07-21 WO PCT/AT2023/060245 patent/WO2024016044A1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10009864A1 (en) | 2000-03-01 | 2001-09-13 | Fluidtech Gmbh | Cooling device esp. for hydraulic oil has cooling unit and filter unit forming integral part, and fitted into single housing |
WO2005093357A1 (en) | 2004-03-28 | 2005-10-06 | Hydac S.A. | Cooling device |
DE102005054755B3 (en) | 2005-11-17 | 2007-02-08 | Hydac Fluidtechnik Gmbh | Cooling device comprises fluid collecting chamber with uniform flow cross-section arranged between filter unit and cooling unit and partially closed by concave curved limiting wall opposite filter unit |
US20150041414A1 (en) * | 2013-08-09 | 2015-02-12 | Ledwell & Son Enterprises, Inc. | Hydraulic fluid cooler and filter |
CN103994130A (en) | 2014-06-05 | 2014-08-20 | 爱克奇换热技术(太仓)有限公司 | Cooling equipment used in hydraulic working circuit |
CN203926234U (en) | 2014-07-16 | 2014-11-05 | 爱克奇换热技术(太仓)有限公司 | Transit mixer cooling unit |
IT202000032120A1 (en) * | 2020-12-23 | 2022-06-23 | Ufi Filters Spa | OIL TEMPERATURE ADJUSTMENT ASSEMBLY |
Also Published As
Publication number | Publication date |
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AT525658A4 (en) | 2023-06-15 |
AT525658B1 (en) | 2023-06-15 |
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