WO2012016668A1 - Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator - Google Patents
Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator Download PDFInfo
- Publication number
- WO2012016668A1 WO2012016668A1 PCT/EP2011/003823 EP2011003823W WO2012016668A1 WO 2012016668 A1 WO2012016668 A1 WO 2012016668A1 EP 2011003823 W EP2011003823 W EP 2011003823W WO 2012016668 A1 WO2012016668 A1 WO 2012016668A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic oil
- oil cooler
- hydraulic
- outlet box
- pressure
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
-
- 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
- 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
- F01M5/005—Controlling temperature of lubricant
- F01M5/007—Thermostatic control
-
- 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
- F15B21/0427—Heating
-
- 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
- F28D1/05316—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
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/06—Derivation channels, e.g. bypass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure
Definitions
- Hydraulic preheater for hydraulic oil cooler in one
- the innovation relates to a device for preheating hydraulic oil according to the generic part of the first claim.
- An air-cooled hydraulic oil cooler is constructed in many ways in lamellae flowing through the oil, air-flow fins and two collecting tanks for the inflowing and outflowing oil.
- CONFIRMATION COPY Oil is still cold and can not be rinsed out fast enough, the prevailing in the system back pressure can exceed the bursting pressure of the radiator and thus lead to damage to the hydraulic oil cooler.
- the inlet and outlet boxes of the hydraulic oil coolers described above each have a connection.
- the oil to be cooled is directed into the inlet box, where it flows vertically through the fins of the hydraulic oil cooler to the outlet box.
- the oil flowing into the outlet box is supplied to the hydraulic tank via the outlet port.
- the fins of the hydraulic oil cooler are horizontally circulated by air during operation.
- DE 197 50 814 A1 discloses a heat exchanger, in particular oil cooler of the type with at least two separate flow channels for different media, which are broken by channels for the inflow and outflow of a medium and with corresponding connections to these channels with the channels for the other Medium and with a lid sealed to the heat exchanger, which forms a flow channel and which includes at least one control valve with which the temperature-dependent flow is regulated.
- DE 699 21 618 T2 discloses a cooling and heating system for a machine, such as a wheel loader or wheel dump, having a main conduit arranged to contain a fluid, a first heat exchanger connected to the main conduit is and a charge air cooler for cooling compressed charge air for an internal combustion engine, which is arranged in the engine, wherein the charge air cooler is connected to the main line, wherein a second heat exchanger is connected to the main line downstream of the charge air cooler, with which second heat exchanger a line for hydraulic Liquid is connected so that heat can be transferred between the fluid in the main line and the hydraulic fluid in the hydraulic fluid line.
- the novelty is based on the object, by flowing around the in the fins of the hydraulic oil cooler, in particular a large hydraulic excavator, located rigid hydraulic oil to heat quickly to prevent the aforementioned damage.
- This object is achieved in that the, coming from a tank, in particular hot oil, the inlet box of the hydraulic oil cooler and is continued via connecting lines and an intermediate pressure relief valve or a check valve to the outlet box at least one hydraulic oil cooler, wherein the outlet box and the cold oil therein can be reheated and the tank can be fed.
- the inflowing preheated oil supplied to the operating pressure via the first port into the inlet box is, when the oil in the fins of the oil cooler is still cold, passed through the inlet box past the oil cooler fins to the second port of the inlet box and further into the connection line to the outlet box ,
- a pressure relief valve is provided in this line.
- the pressure connection of this valve is connected via the line with the inlet box, the tank connection is connected via a further line to the outlet box of the hydraulic oil cooler.
- the pressurized preheated oil flows through the first connection into the inlet box of the hydraulic oil cooler, pressure builds up with cold oil, which is located in the fins of the hydraulic oil cooler, because the cold oil can not immediately be forced out of the fins.
- the preheated oil in the inlet box is now fed via the second connection to the pressure limiting valve.
- a preset pressure in the pressure relief valve is exceeded, which is below the maximum operating pressure of the Hydraulic oil cooler is located, opens the valve and releases the flow of oil flowing from the inlet box to the outlet box.
- the oil is further warmed up and, according to the innovation, fed to the first connection of the outlet box.
- the oil is supplied from the outlet box to the tank via the second connection.
- the warm oil from the hydraulic tank is thus under pressure at the connection of the inlet box of the hydraulic oil cooler.
- hydraulic oil is further heated up by the device described above and is in the outlet box of the hydraulic cooler.
- the radiator is warmed up to such an extent that the still clogged lamellae can be flushed free with the pressure applied.
- the back pressure in the system decreases and the pressure relief valve closes.
- the hydraulic oil cooler now works in the normal state.
- FIG. 2 shows the preheating with a pressure limiting valve
- FIG. 1 shows a schematic diagram of the prior art. Via a temperature sensor 1, which is arranged in the tank 2 and a control electronics 3, not shown, by means of a pump 4 via a control valve 5 hydraulic oil from the tank 2 into the inlet box 6 of the Hydraulic oil cooler 7 passed.
- the hydraulic oil builds up a pressure in the slats 7 'of the hydraulic oil cooler 7 and presses the cold oil present there into the outlet box 8 of the hydraulic oil cooler 7, from where it is led via the line 9 to the tank 2.
- FIG. 2 shows a schematic diagram of the device according to the invention for preheating cold hydraulic oil present in the lamellae 7 'of a hydraulic oil cooler 7.
- Identical components are provided with the same reference numerals. Visible is the hydraulic oil cooler 7 with the inlet 6 and outlet box 8, a pressure relief valve 13 and the connecting lines 14,15 from the inlet box 6 to the pressure relief valve 13 and the pressure relief valve 13 to the outlet box 8 via a temperature sensor 1, which is arranged in the tank 2 and a control electronics 3, not further shown, is supplied by means of a feed pump 4 via a control valve 5 oil from the hydraulic tank 2 to the terminal 10 of the inlet box 6 of the hydraulic oil cooler 7.
- the oil present in the inlet box 6 flows via the connection 11 of the inlet box 6 via the line 14 to the pressure limiting valve 13 and from there via the line 15 to the connection 16 of the outlet box 8 of the hydraulic oil cooler 7
- the heated oil is supplied via the connection 17 of the outlet box 8 of the hydraulic oil cooler 7 again via the line 9 to the tank 2.
- FIG. 3 shows a schematic diagram of the device according to the invention for preheating cold hydraulic oil present in the lamellae 7 'of a hydraulic oil cooler 7, wherein a spring-biased check valve 18 is used instead of the pressure limiting valve 13.
- the function here corresponds to that of FIG. 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011287925A AU2011287925A1 (en) | 2010-08-04 | 2011-07-29 | Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator |
EP11752463.7A EP2601390A1 (en) | 2010-08-04 | 2011-07-29 | Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator |
US13/813,364 US20130213633A1 (en) | 2010-08-04 | 2011-07-29 | Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator |
CN201180047919.0A CN103140654B (en) | 2010-08-04 | 2011-07-29 | For the hydraulic pressure pwc thermal of the hydraulic oil cooler in large hydraulic excavator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202010011010U DE202010011010U1 (en) | 2010-08-04 | 2010-08-04 | Hydraulic preheater for hydraulic oil cooler in a large hydraulic excavator |
DE202010011010.6 | 2010-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012016668A1 true WO2012016668A1 (en) | 2012-02-09 |
Family
ID=43049765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/003823 WO2012016668A1 (en) | 2010-08-04 | 2011-07-29 | Hydraulic preheating apparatus for hydraulic oil coolers in a large hydraulic excavator |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130213633A1 (en) |
EP (1) | EP2601390A1 (en) |
CN (1) | CN103140654B (en) |
AU (1) | AU2011287925A1 (en) |
DE (1) | DE202010011010U1 (en) |
WO (1) | WO2012016668A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103398626B (en) * | 2013-07-26 | 2016-01-20 | 江苏高博智融科技有限公司 | A kind of heat exchanger with ring sound |
US10436529B1 (en) * | 2018-08-23 | 2019-10-08 | William T. Holley, Jr. | Hydraulic fluid coolers |
GB2585908B (en) * | 2019-07-23 | 2023-08-23 | Bamford Excavators Ltd | Working Machine |
US10859203B1 (en) * | 2020-03-12 | 2020-12-08 | American Jereh International Corporation | High-low pressure lubrication system for high-horsepower plunger pump |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4209062A (en) * | 1978-02-10 | 1980-06-24 | Karmazin Products Corporation | Heat exchanger construction |
DE4122904A1 (en) * | 1991-07-11 | 1993-01-14 | Laengerer & Reich Kuehler | OIL COOLER |
DE19750814A1 (en) | 1997-11-17 | 1999-06-02 | Laengerer & Reich Gmbh & Co | Heat exchanger, in particular oil cooler with an enclosed control valve, and method for controlling a heat exchanger |
DE69921618T2 (en) | 1998-02-27 | 2005-11-03 | Volvo Wheel Loaders Ab | COOLING AND HEATING SYSTEMS FOR MACHINERY |
WO2005121677A1 (en) * | 2004-06-09 | 2005-12-22 | Philipp Pustelnik | Plate cooler |
US20060060347A1 (en) * | 2004-08-27 | 2006-03-23 | George Moser | Oil cooler |
EP1772693A1 (en) * | 2005-10-08 | 2007-04-11 | Modine Manufacturing Company | Brazed heat exchanger and manufacturing method |
DE102008020609A1 (en) * | 2008-04-24 | 2009-10-29 | Mann + Hummel Gmbh | Heat exchangers, in particular oil coolers |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1690501A (en) * | 1926-10-08 | 1928-11-06 | Vickers Ltd | Heat exchanger |
US4308652A (en) * | 1978-02-10 | 1982-01-05 | Karmazin Products Corporation | Heat exchanger construction |
DE2916691C2 (en) * | 1979-04-25 | 1983-11-24 | Bayerische Motoren Werke AG, 8000 München | Cooling device for internal combustion engines |
US4991643A (en) * | 1989-08-23 | 1991-02-12 | Hayden, Inc. | Heat exchanger with internal bypass valve |
US5242011A (en) * | 1992-07-14 | 1993-09-07 | Thermal Transfer Products, Lt. | Heat exchanger with pressure responsive bypass |
JP3322016B2 (en) * | 1994-08-29 | 2002-09-09 | 株式会社デンソー | Hot water heating system for automobiles |
US6651441B2 (en) * | 2002-01-22 | 2003-11-25 | Hamilton Sundstrand | Fluid flow system for a gas turbine engine |
DE10230042A1 (en) * | 2002-07-04 | 2004-01-22 | Hydac S.A. | Device for heat exchange between flowable media |
US7540431B2 (en) * | 2004-11-24 | 2009-06-02 | Dana Canada Corporation | By-pass valve for heat exchanger |
JP2008528946A (en) * | 2005-02-02 | 2008-07-31 | キャリア コーポレイション | Cocurrent heat exchanger for heat pump |
JP4931955B2 (en) * | 2009-04-06 | 2012-05-16 | 日立建機株式会社 | Hydraulic circuit device of excavator |
-
2010
- 2010-08-04 DE DE202010011010U patent/DE202010011010U1/en not_active Expired - Lifetime
-
2011
- 2011-07-29 EP EP11752463.7A patent/EP2601390A1/en not_active Withdrawn
- 2011-07-29 WO PCT/EP2011/003823 patent/WO2012016668A1/en active Application Filing
- 2011-07-29 CN CN201180047919.0A patent/CN103140654B/en not_active Expired - Fee Related
- 2011-07-29 US US13/813,364 patent/US20130213633A1/en not_active Abandoned
- 2011-07-29 AU AU2011287925A patent/AU2011287925A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4209062A (en) * | 1978-02-10 | 1980-06-24 | Karmazin Products Corporation | Heat exchanger construction |
DE4122904A1 (en) * | 1991-07-11 | 1993-01-14 | Laengerer & Reich Kuehler | OIL COOLER |
DE19750814A1 (en) | 1997-11-17 | 1999-06-02 | Laengerer & Reich Gmbh & Co | Heat exchanger, in particular oil cooler with an enclosed control valve, and method for controlling a heat exchanger |
DE69921618T2 (en) | 1998-02-27 | 2005-11-03 | Volvo Wheel Loaders Ab | COOLING AND HEATING SYSTEMS FOR MACHINERY |
WO2005121677A1 (en) * | 2004-06-09 | 2005-12-22 | Philipp Pustelnik | Plate cooler |
US20060060347A1 (en) * | 2004-08-27 | 2006-03-23 | George Moser | Oil cooler |
EP1772693A1 (en) * | 2005-10-08 | 2007-04-11 | Modine Manufacturing Company | Brazed heat exchanger and manufacturing method |
DE102008020609A1 (en) * | 2008-04-24 | 2009-10-29 | Mann + Hummel Gmbh | Heat exchangers, in particular oil coolers |
Also Published As
Publication number | Publication date |
---|---|
US20130213633A1 (en) | 2013-08-22 |
DE202010011010U1 (en) | 2010-11-04 |
AU2011287925A1 (en) | 2013-02-28 |
CN103140654A (en) | 2013-06-05 |
EP2601390A1 (en) | 2013-06-12 |
CN103140654B (en) | 2016-03-02 |
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