EP2553276A1 - Fluid cooling device - Google Patents
Fluid cooling deviceInfo
- Publication number
- EP2553276A1 EP2553276A1 EP11711450A EP11711450A EP2553276A1 EP 2553276 A1 EP2553276 A1 EP 2553276A1 EP 11711450 A EP11711450 A EP 11711450A EP 11711450 A EP11711450 A EP 11711450A EP 2553276 A1 EP2553276 A1 EP 2553276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- storage tank
- cooling device
- fluid
- fluid cooling
- structural unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 89
- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 238000003860 storage Methods 0.000 claims abstract description 76
- 238000007789 sealing Methods 0.000 claims description 8
- 230000002441 reversible effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 14
- 239000011521 glass Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000000071 blow moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- UJCHIZDEQZMODR-BYPYZUCNSA-N (2r)-2-acetamido-3-sulfanylpropanamide Chemical group CC(=O)N[C@@H](CS)C(N)=O UJCHIZDEQZMODR-BYPYZUCNSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/54—Inspection openings or windows
- B65D25/56—Inspection openings or windows with means for indicating level of contents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/6416—With heating or cooling of the system
- Y10T137/6525—Air heated or cooled [fan, fins, or channels]
Definitions
- the invention relates to a fluid cooling device as a structural unit with a drive motor that drives a rotatable fan, and with a filling and a level indicator having storage tank from which at least one fluid is conveyed into a hydraulic working circuit, wherein in the hydraulic working circuit, the fluid is heated and cooled by a heat exchanger of the assembly, preferably back into the storage tank traceable.
- Fluid cooling devices as part of compact hydraulic units or as a functional unit for a hydraulic working group are basically known. They regularly consist of a cooling device, consisting of a cooler with fan fan and attached storage tank for a circulating fluid. Such fluid cooling devices are used both stationary and in mobile application in vehicles, in particular in utility vehicles or working machines, in which temporary additional hydraulic working circuits can be used.
- a fluid (hydraulic oil) is conveyed from a storage tank into a hydraulic working group with at least one consumer.
- the pressure medium is used in the hydraulic working warmed during operation thereof and cooled again via a cooling device, before it again enters the said storage tank.
- the supply tank regularly includes the fan fan or impeller in the manner of a flow guide or in the form of a so-called. NACA ring, whereby on the one hand an improved fan flow and the other a
- WO 98 / 42986A1 describes a fluid cooling device which forms a compact unit consisting of a motor which drives a fan wheel and a fluid pump.
- the fluid is heated by flow losses and adiabatic processes and fed to a heat exchanger.
- the fluid is returned to the oil reservoir.
- the oil tank is trough-shaped with, the motor and the fluid pump partially reshaping walls formed.
- the fluid cooling device shown represents a compact solution without pipe connections, so that the structural unit, consisting of filter and pump unit as well as a cooling unit, can be connected to an oil tank in a space-saving manner without further piping.
- the fluid cooling devices which are freely available on the market and described here by way of example only, are special solutions specially adapted and developed specifically for specific installation situations on site, which do not permit a diverse spatial arrangement such as a turning unit.
- Their design, the type and arrangement, in particular of fluid connections and filling openings or level indicators, define a fixed installation situation in their mechanical environment, which is not changeable in this respect.
- the invention has the object, while maintaining the advantages of the known solutions to further improve that the fluid cooling device allows different installation directions and yet structurally simple, especially based on their components, such as filling, level indicator and associated fluid connections.
- the structural unit (fluid cooling device) is designed as a turning unit in which a filling opening, preferably provided with a Fi lter featured, and a level indicator are arranged on the storage tank such that the assembly in at least two mounting directions, Preferably, according to two main axes and preferably in a vertical mounting direction and in a preferably arranged perpendicular thereto horizontal mounting direction mountable, a constructive measure is provided to assemble the fluid cooling device in different mounting positions and yet with a minimum number of level indicators and filling, namely preferably with only one display or opening to get along. Preferably, therefore, it is provided with a single filling opening and with a single level indicator, which are designed accordingly to mount the fluid cooling device in at least two mutually different mounting positions on a third component accordingly, without resulting in loss of function.
- the filling To arrange the opening and the level indicator in a corner area of the storage tank.
- the relevant corner region is characterized by a flattening of the respective corner of the storage tank, ie by a removal of the corner formed by the otherwise three pointed wall surfaces running to each other. Instead of said corner a approximately 45 ° all three wall panels concerned cutting wall or corner surface is formed, which allows the arrangement of the filling at the apex of the boundary line of the individual wall surfaces of the storage tank.
- the storage tank preferably has a parallelepiped-like shape, each with edges running approximately parallel to one another on the individual side surfaces, which in a preferred embodiment are designed to be approximately the same length.
- the level indicator Adjacent to the filling opening, which may also be equipped with a filter device and a pressure compensation device, the level indicator is provided.
- the level indicator is preferably formed by a scale which is formed directly and preferably in one piece with the wall of the storage tank.
- the scaling is arranged around a control opening or indicator (sight glass), which is recessed in the wall of the storage tank.
- the storage tank is preferably a formed by forming or blow molding thermoplastic plastic tank, so that the scaling in the form of spaced lines in the manufacture of the storage tank can be made with.
- the scaling can be obtained by a corresponding shaping within the thermoforming or blow mold for storage tank preparation.
- the walls of the storage tank are made transparent, so that directly the level at the scale used can be read.
- the storage tank In order to effect a UV radiation shielding for the relevant fluid, it may be expedient to form the storage tank from a milky-opaque plastic or a non-transparent plastic, so that the fill level expediently at one, the Kontrol opening-closing transparent sealing element can be read in the manner of a sight glass, in which subsequent wall area again the respective scale is arranged to make a level adjustment between the amount shown in the sight glass and the adjacent scale can.
- the sealing element need not be transparent when the wall of the storage tank is transparent. If the wall of the storage tank is again not transparent, it is advisable to use a transparent sealing element for the inspection opening in the manner of the sight glass. Also, a partial transparency for the wall of the storage tank may be provided in such a way that just a comparison check between scaling and level height is made possible in the storage tank.
- the level indicator can be embedded in a recess in the wall contour of the storage tank.
- the scaling preferably includes a fictitious angle of 90 ° to each other in a corresponding arrangement immediately adjacent to the control aperture.
- the storage tank serves as a carrier for the fan wheel together with the drive motor and encloses this preferably in the manner of a frame, so that a filled with fluid box construction is realized around the rotatable fan.
- the storage tank and its shape can be chosen such that this as a Can serve guide for incoming air and on the other hand forms a good damping measure for any operating noise of the fan.
- the storage tank is so far preferably flows through cooling air, wherein the flowed through by the heated fluid heat exchanger may also be an integral part of the storage tank, which preferably surrounds the heat exchanger at least on two opposite sides, thereby fixing it to a box or frame construction of the storage tank.
- the heat exchanger is integrated into the outer contour of the storage tank in such a way that a total of a cuboid or a parallelepiped-like shape of the fluid cooling device is formed as a unit, which does not require significant attachments and protrusions for mounting on third components.
- a pressure relief valve of the fluid cooling device can also be part of the storage tank adjacent to the filling opening and the level indicator. In that regard, the operation of the fluid cooling device by changing the mounting position for safety considerations due to the pressure relief valve would be possible without hesitation.
- the fluid cooling device according to the invention will be explained in more detail using an exemplary embodiment according to the drawing.
- FIG. 1 show the a perspective view of a fluid cooling device according to the invention; a view of the fluid cooling device of Figure 1 in the vertical mounting direction.
- a view of the fluid cooling device according to Figure 1 in the horizontal mounting direction by the fluid cooling device is pivoted in the direction of the Fig.l by a pivot angle of 90 ° clockwise.
- FIG. 1 a perspective view of an installation example of the fluid cooling device in a vehicle frame in the vertical mounting direction; a rear view of the fluid cooling device with view of a heat exchanger in the manner of a finned cooler, which is integrated in the storage tank of the fluid cooling device; and a bottom or bottom view of the fluid cooling device seen from below.
- FIG. 1 shows, in a perspective, schematic view, a fluid cooling device 1 for receiving and cooling a fluid which can be inserted into a hydraulic working circuit of a commercial vehicle (not shown).
- the fluid may be a hydraulic oil for a shiftable, hydrostatic or mechanical transmission of the motor vehicle.
- the fluid cooling device 1 can also be integrated in existing hydraulic drive circuits. se of drive or machine tools to cool appropriate working hydraulic oil.
- FIGS. 2 and 3 show two possible installation positions of the fluid cooling device 1, the installation position in FIG. 2 showing a substantially vertical orientation of the fluid cooling device 1 and the orientation according to FIG. 3 showing a horizontal arrangement and, thus, horizontal Fluid cooling device 1.
- 2 corresponds to the installation situation according to the illustration according to FIG. 4, and in the horizontal arrangement according to FIG. 3, the fluid cooling device 1 shown in FIGS. 1 and 5 would be around an inclination axis of 90 ° in each case the image plane into or out of the image plane shown tilted.
- Essential components of the fluid cooling device 1 are a storage tank 4 which describes the shape of the fluid cooling device 1, a drive motor 2, for example in the form of a DC electric motor, and a fan wheel 3 driven by it (see Fig. 5).
- free side surfaces of the overall shape of the fluid cooling device 1 defined by a cuboidal shape of the storage tank 4 are used.
- Fig. Des shows further a front view of the fluid cooling device 1, wherein in a rotary blow-molding of a preferably made of polyethylene plastic formed storage tank 4 for fluid offers a substantially rectangular front view of the considered.
- Radially from the drive motor 2 outgoing ribs 1 7, the web-like extend to the edge of the fan opening 16, can serve as a kind of rectifier for smoothing the cooling air flow and stiffen so also the respective grille 18 for the fan 3.
- the storage tank 4 has a conical, tapered shape in the manner of an inlet funnel on to the closed by the grille 18 fan opening 16, so that there are low inlet losses for the fan and insofar as a favorable flow of the cooling air through the storage tank 4 results.
- the storage tank 4 has on its right side wall a chamfer 29, which represents a customized design feature and can result, inter alia, from the respective installation situation for the fluid cooling device 1. Seen on the right bottom side in the direction of FIG. 1, there is a different one on the front wall guided around the fan opening 16
- the blower air flow is directed centrally onto the cooling fins 20 of a heat exchanger 5 extending horizontally in FIG.
- the cooling fins 20 extend in the same distance from each other from a box-shaped inlet distribution channel 21 to a box-like drain channel 22, the cooled fluid is discharged back into the interior of the storage tank 4.
- the channels 21, 22 are arranged perpendicular to the cooling fins 20, wherein the entire heat exchanger 5 may be formed both as a casting and in sheet metal construction with solder or welded joints.
- the heat exchanger 5 has a pressure relief valve 1 4, which is installed on an upper side of the feed distribution channel 21 and opens out in the region of an upper side wall 10 "(see FIG. 1) of the storage tank 4.
- a pressure relief valve 1 4 which is installed on an upper side of the feed distribution channel 21 and opens out in the region of an upper side wall 10 "(see FIG. 1) of the storage tank 4.
- the wall surface 9 is formed integrally with the remaining walls of the storage tank 4.
- a filling level indicator 7 is arranged on the side wall 10 "shown in FIG. 1 as the upper side of the storage tank 4 and consists firstly of a circular filling level control opening 13 in the manner of a sight glass and two graduations 1 1, 1 1 ', which occupy a right angle to one another.
- the respective scaling 1 1, 1 1' can be calculated from a single-line display according to the present invention. made embodiment, which gives the viewer an indication of the desired maximum or minimum volume level in the storage tank 4, or consist of a multi-line arrangement that allows a statement about which defined amount is included in the storage tank 4.
- the one scale 1 1 is arranged parallel to the mounting direction X
- the further scale 1 1 ' is arranged parallel to the mounting direction Y.
- the point of intersection S of the two scaling regions 1 1, 1 1 ' forms the middle point of the fill level control opening 13.
- the fill level control opening 13 (sight glass) is approximately 1/8 to 1/5 of the total length or the total width of the fill opening 6 the storage tank 4 spaced.
- the respective position of the control opening 13 in conjunction with the respective scaling 1 1, 1 1 ' is dependent on which filling level for the respective storage tank 4 is predetermined by the user.
- a sealing element 1 2 in the form of a clipped plastic cap closes the level control opening
- the cooling fins 20 have rectangular, strip-like outline shape with constant width and thickness over its entire length.
- the heat exchanger 5 is constructed as an independent component in a modular manner and can be fluidly connected via plug connections without Verrohrrung with the storage tank 4. This results in a very quick and easy total assembly option. As shown in Figure 5 in a rear view of the heat exchanger 5, this is connected on its inlet distribution channel side 21 with screws on two tabs 25 to the storage tank 4. On the side of its drainage channel 22, the heat exchanger 5 is inserted releasably into undercuts of the storage tank 4 in a form-fitting manner.
- An equally positive, releasable connection of the heat exchanger 5 may be additionally provided on its inlet distribution channel side 21, so that overall results in a simple assembly and a surface connection of the heat exchanger 5 with the storage tank 4.
- the storage tank 4 can be designed with its components produced as a plastic part in blow molding or rotational molding process to its effect that not only mechanical and hydraulic connection options are provided, but also cable guides for connecting cable of the electric drive motor 2.
- a cable guide slot 26 is provided which is located approximately in the center of an edge of the side wall 10 "adjacent to the grating 118 for the fan wheel 3.
- the power supply for the drive motor 2 can be implemented in the aforementioned manner through the gap 26.
- FIG. 6 again shows a view of the underside of the fluid cooling device 1 together with that side from which the fluid is removed from the storage tank 4.
- a removal opening 28 which can have a corresponding fluid coupling, is arranged on a further corner region 27 of the tank 4
- the removal opening 28 is similar to the di e wall surface 9 is provided in the overlapping region of three side surfaces of the storage tank 4 and the wall surface 9 is arranged diagonally opposite the storage tank 4. Due to the position of the removal opening 28, it is possible that in both provided installation positions of the Fluidksselvorrich- device 1, the removal opening 28 at the lowest Stel le of the storage tank 4 comes to rest.
- Figure 6 is a view of the return pipe 15 for fluid, which from the hydraulic circuit back to the Heat exchanger 5 is shown, shown.
- the pertinent return pipe 1 5 is so far on the underside of the box-shaped inlet distribution channel 21st
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010012952A DE102010012952A1 (en) | 2010-03-26 | 2010-03-26 | Fluid Cooler |
PCT/EP2011/001399 WO2011116924A1 (en) | 2010-03-26 | 2011-03-22 | Fluid cooling device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2553276A1 true EP2553276A1 (en) | 2013-02-06 |
EP2553276B1 EP2553276B1 (en) | 2019-08-07 |
Family
ID=44310931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11711450.4A Active EP2553276B1 (en) | 2010-03-26 | 2011-03-22 | Fluid cooling device |
Country Status (4)
Country | Link |
---|---|
US (1) | US9222492B2 (en) |
EP (1) | EP2553276B1 (en) |
DE (1) | DE102010012952A1 (en) |
WO (1) | WO2011116924A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT13845U1 (en) * | 2013-04-17 | 2014-10-15 | Pustelnik Philipp Dipl Ing | Attachment for a hydraulic oil-air cooler |
CN104514760A (en) * | 2013-09-26 | 2015-04-15 | 北汽福田汽车股份有限公司 | Hydraulic oil tank, hydraulic system with hydraulic oil tank and vehicle |
DE202013009654U1 (en) * | 2013-10-31 | 2015-02-03 | Oerlikon Leybold Vacuum Gmbh | vacuum pump |
CN104454678A (en) * | 2014-11-13 | 2015-03-25 | 广西柳工机械股份有限公司 | Hydraulic oil tank |
US20170356438A1 (en) * | 2015-02-17 | 2017-12-14 | Actuant Corporation | Portable fluid pump system |
CN104832502A (en) * | 2015-05-29 | 2015-08-12 | 鲁开明 | Double-oil cylinder hydraulic oil circulating cooling device |
CN105257634B (en) * | 2015-11-25 | 2017-09-22 | 湖南三一路面机械有限公司 | Hydraulic oil auxiliary heat dissipating system and engineering machinery |
EP3327296B1 (en) * | 2016-11-28 | 2019-07-24 | Walter Steinparzer | Hydraulic oil tank with integrated cooling |
EP3686351A1 (en) * | 2019-01-23 | 2020-07-29 | Yanmar Co., Ltd. | Fluid cooling device and construction machine |
CN110529440B (en) * | 2019-09-24 | 2020-09-15 | 哈尔滨工业大学 | Hydraulic oil tank for oil return power driving belt graphene heat conduction fan |
CN110878780B (en) * | 2019-11-15 | 2021-07-23 | 苏州美钢创业投资合伙企业(有限合伙) | Hydraulic pressure station convenient to remove and having heat dissipation function |
DE102021210221A1 (en) | 2021-09-15 | 2023-03-16 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Compressor oil receiver and compressor system with such a compressor oil receiver |
DE102022131113A1 (en) * | 2022-11-24 | 2024-05-29 | Ammann Schweiz Ag | Cooler-tank combination |
EP4375428A1 (en) | 2022-11-25 | 2024-05-29 | Yanmar Holdings Co., Ltd. | Work machine |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1142262A (en) * | 1912-04-20 | 1915-06-08 | Clarence M Mendenhall | Gage-glass. |
US2294473A (en) * | 1940-03-13 | 1942-09-01 | Everett R Makeley | Window container |
US3276488A (en) * | 1964-03-27 | 1966-10-04 | Allie B Holmes | Tank viewer and injection fitting |
US3505870A (en) * | 1968-08-07 | 1970-04-14 | Avoset Co | Pressurized container with content indicator |
US3603694A (en) * | 1969-11-10 | 1971-09-07 | Ronald D Hamm | Device for feeding paint to a painting brush |
US4360152A (en) * | 1980-09-08 | 1982-11-23 | Schlatter Lester E | Auxiliary heating system |
US5121788A (en) * | 1989-10-16 | 1992-06-16 | Miller Electric Mfg. Co. | Self contained heat exchange apparatus |
USD356951S (en) * | 1992-04-07 | 1995-04-04 | Briggs & Stratton Corporation | Gasoline container |
DE19652706A1 (en) * | 1995-12-22 | 1997-06-26 | Rexroth Mannesmann Gmbh | Compact hydraulic unit with hydro-pump driven by air-cooled electric motor |
DE19711591A1 (en) | 1997-03-20 | 1998-09-24 | Fluidtech Gmbh | Fluid cooling device |
US6082591A (en) * | 1999-01-02 | 2000-07-04 | Healey; Thomas J | Graduated sight glass container |
US6742668B1 (en) * | 2002-11-21 | 2004-06-01 | Daniel Perlman | Tilting liquid storage container for either oblique or vertical entry of pipets |
DE10328177A1 (en) | 2003-06-17 | 2005-01-13 | Hydac System Gmbh | Fluid-cooling device for hydraulic circuits of driving engines or machine tools comprises a feed reservoir partly surrounding a ventilation wheel and forming a preferably plastic ventilation housing |
DE10328277A1 (en) | 2003-06-23 | 2005-01-13 | Rwth Aachen | Flow chamber for in-vitro investigation of cell surface processes under microscope, comprises seal and spring clamp holding culture dish |
DE102004039482B4 (en) * | 2004-08-14 | 2007-04-12 | Protechna S.A. | Liquid container made of plastic |
US7506541B2 (en) * | 2006-01-09 | 2009-03-24 | The United States Of America As Represented By The National Aeronautics And Space Administration | System and method for wirelessly determining fluid volume |
US7597000B2 (en) * | 2006-07-27 | 2009-10-06 | Hamilton Sundstrand Corporation | Top view liquid sight level indicator |
AT10226U1 (en) * | 2007-07-13 | 2008-11-15 | Pustelnik Philipp Dipl Ing | HYDRAULIC OIL TANK FOR WORKING MACHINES |
-
2010
- 2010-03-26 DE DE102010012952A patent/DE102010012952A1/en not_active Withdrawn
-
2011
- 2011-03-22 WO PCT/EP2011/001399 patent/WO2011116924A1/en active Application Filing
- 2011-03-22 US US13/261,438 patent/US9222492B2/en not_active Expired - Fee Related
- 2011-03-22 EP EP11711450.4A patent/EP2553276B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102010012952A1 (en) | 2011-09-29 |
EP2553276B1 (en) | 2019-08-07 |
US9222492B2 (en) | 2015-12-29 |
US20130081387A1 (en) | 2013-04-04 |
WO2011116924A1 (en) | 2011-09-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20120823 |
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