EP1520995A2 - Hydraulische Vorrichtung und deren Herstellungs- und Verwendungsverfahren - Google Patents

Hydraulische Vorrichtung und deren Herstellungs- und Verwendungsverfahren Download PDF

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Publication number
EP1520995A2
EP1520995A2 EP04396068A EP04396068A EP1520995A2 EP 1520995 A2 EP1520995 A2 EP 1520995A2 EP 04396068 A EP04396068 A EP 04396068A EP 04396068 A EP04396068 A EP 04396068A EP 1520995 A2 EP1520995 A2 EP 1520995A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
power unit
hydraulic apparatus
set forth
oil
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.)
Withdrawn
Application number
EP04396068A
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English (en)
French (fr)
Other versions
EP1520995A3 (de
Inventor
Reijo Viinonen
Jarkko Mäkinen
Lauri Elo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fluid House Oy
Original Assignee
Fluid House Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fluid House Oy filed Critical Fluid House Oy
Publication of EP1520995A2 publication Critical patent/EP1520995A2/de
Publication of EP1520995A3 publication Critical patent/EP1520995A3/de
Withdrawn legal-status Critical Current

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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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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

Definitions

  • This invention relates to a hydraulic apparatus comprising one or more oil tanks.
  • the oil tank of a hydraulic apparatus is generally a rectangular container in which the oil flow is non-uniform. This being the case, part of the oil may remain in the tank even for a long time without being brought to the circulation. For example, the separation of air and water may be defective, and the oil volume is also otherwise poorly utilized.
  • a hydraulic apparatus In a hydraulic apparatus the electric motor and hydraulic components are traditionally located on top of the oil tank or in its immediate vicinity, e.g. on the same assembly base.
  • this type of apparatus is easy to service and use, but on the other hand, noise produced by the apparatus is very difficult to eliminate from the operation site. Due to a high noise level, it is generally necessary to locate the apparatus in a separate hydraulic unit room, away from the operation site. Locating in a separate room adds to the construction costs, on one hand, and on the other, also remarkably increases the need of hydraulic piping and oil.
  • 'hydraulic apparatus' refers to any apparatus with one or more hydraulic actuators connected thereto.
  • a 'hydraulic component' refers to any component connected to a hydraulic apparatus.
  • 'Other hydraulic component' in turn refers to any hydraulic component connected to a hydraulic apparatus with the exception of the electric motor, hydraulic pump and oil tank.
  • the hydraulic apparatus comprises one or more oil tanks provided with means for controlling the hydraulic oil flow to the tangential direction.
  • This technical solution increases for its part the adaptability of the apparatus to various applications.
  • a tangential flow decreases blind spots in relation to the flow in the oil tank. Due to this, for example the separation of air and water also improves compared to a traditional oil tank.
  • the oil tank volume is then efficiently used and thus the total volume of the hydraulic apparatus is preferably used as well as possible.
  • Another essential advantage of this is improved oil purification, as the total oil volume can be brought to the purification circulation.
  • the oil tank comprises an at least partially spiral guide plate for controlling the oil flow tangentially and spirally.
  • the upper part of the oil tank is provided with an oil supply pipe having a tangentially directed supply.
  • a discharge pipe Preferably in the lower part of the oil tank there is a discharge pipe with a tangentially directed discharge.
  • the oil tank preferably has an inclined bottom plate.
  • one or more separate power units that are disconnected from the oil tank are attached to the hydraulic apparatus, these power units having an at least partially opening external cladding, and one or more electric motors and hydraulic pumps as well as one or more other hydraulic components can be installed in the power unit.
  • This type of apparatus design is extremely flexible. Due to the external cladding, the apparatus can be installed directly at the operation site and thus no separate hydraulic unit room is required. In addition, the piping of the apparatus and the whole hydraulic system is simplified, as the operation site can be in the immediate vicinity of the hydraulic apparatus.
  • Another advantage of a power unit that is separate from the oil tank is that the oil tanks and power units can be modularly combined. Hydraulic apparatuses can be assembled with a varying number of oil tanks and a varying number of power units. According to the requirements of use, for example an oil tank or a power unit or both can be later added to the hydraulic apparatus.
  • the power unit preferably comprises an internal wall for installing the electric motor, hydraulic pump and/or one or more other hydraulic components.
  • the internal wall is provided with one or more perforated plates for installing the hydraulic components.
  • the external cladding of the power unit is at least partially sound-insulated for reducing the noise produced by the apparatus.
  • the power unit comprises at least one separate pump compartment and one separate component compartment and an at least partially opening external cladding part
  • the electric motor and hydraulic pump are installed in the separate pump compartment of the power unit and one or more other hydraulic components are installed in the separate component compartment of the power unit.
  • This type of hydraulic apparatus produces relatively little noise to the environment, because the components creating a lot of noise, electric motor and hydraulic pump, are located in a separate pump compartment.
  • the external cladding parts can be sound-insulated, which further reduces the noise caused by the hydraulic apparatus.
  • a combination of an electric motor and hydraulic pump is installed in an essentially vertical position in the power unit.
  • the advantage of the vertical assembly is e.g. that it takes little floor installation space.
  • Around the vertically mounted electric motor/hydraulic pump combination it is preferable to make a vertically shaped pump compartment.
  • This kind of vertical pump compartment having thus a greater height than width, can carry noise upwards, as it allows installing the power unit more freely in different positions. This enables to further reduce the noise at the working level compared to e.g. traditional hydraulic power units.
  • the power unit comprises a replaceable and/or adjustable adapter plate for installing electric motors and/or hydraulic pumps of various sizes. This essentially diversifies the use of the power unit and hydraulic apparatus, because the same apparatus can then be used in various applications. On the other hand, increasing/decreasing the power of the apparatus can be carried out without a need to change the power unit itself at the same time.
  • the bottom of the power unit is provided with one or more drain basins for improving safe operation and/or facilitating the maintenance.
  • the sound insulation of the partition wall essentially reduces noise in the component compartment. Consequently, it is possible to work with reduced noise for example during the adjustment and use of the hydraulic apparatus.
  • the assembly and use of an apparatus, which is essentially totally sound-insulated for its external cladding and comprises a sound-insulated partition wall between its pump compartment and component compartment, is extremely flexible in various applications.
  • the sound insulator used for the partition wall can be e.g. 50-200 mm wide mineral wool, preferably such as 75-125 mm mineral wool.
  • the air channel for its part, improves the sound insulation.
  • the air channel also carries noise increasing thus further the installation possibilities of the apparatus.
  • the air channel is essentially vertical in which case it preferably carries noise away from the power unit.
  • the walls of the air channel are preferably made partly or completely of the wall components of the partition wall.
  • the air channel can be made structurally curvy, whereby the noise carried to the air channel is damped relatively efficiently due to a large noise abatement area.
  • the air channel can be preferably located inside a sound insulator, such as mineral wool.
  • a ceiling part equipped with air guides for guiding the cooling air to and/or from the power unit compartment.
  • the air guide can be preferably connected to the ventilation of the operating room and in this case it is possible to utilize the heat created by the apparatus for the heating of the operating room, for example, by guiding the exhaust air to the heat exchange equipment.
  • Leading the air out of the power unit to the ventilation channels improves for its part the installation possibilities and use of the apparatus by reducing heat and noise load at the operation site.
  • the air guide of the power unit and the air channel of the partition wall are connected to the air guides in the ceiling part for cooling one or more compartments. This improves cooling and sound insulation of the apparatus and increases, for its part, the installation possibilities of the apparatus.
  • Ventilation of the power unit can be based either on free ventilation or forced ventilation or a combination thereof.
  • ventilation for example separate fans can be used to improve ventilation.
  • heat is removed from the power unit at the same time.
  • the fan of one of the components, such as the fan of the electric motor, is preferably used for ventilation.
  • the air guides can be preferably installed for example in such a manner that the air supply guide is above the electric motor of the pump compartment and the air exhaust guide is above the air cooler of the component compartment.
  • the cooling air preferably circulates from the electric motor to the air channel and further out via the air cooler.
  • the ceiling part of the power unit can be at least partially sound-insulated for improving the sound insulation of the apparatus.
  • Sound insulation is preferably made at least in the ceiling part of the pump compartment of the power unit.
  • the external cladding part of the power unit is essentially completely sound-insulated.
  • the ceiling part is preferably essentially completely sound-insulated.
  • a hydraulic apparatus according to the invention can be used in very many applications. Further, the size and capacity of the apparatus can be freely variable. The configuration of the apparatus can also vary.
  • the output of the electric motor can be e.g. 10-100 kW.
  • the volumetric flow of the apparatus can be e.g. 10-500 dm3/min.
  • a hydraulic apparatus according to the invention can be used e.g. in applications, in which the viscosity of hydraulic oil is 10-100 cSt, such as 32 and 46 cSt.
  • the apparatus according to the invention can be adapted e.g. in the following industrial hydraulic applications:
  • marine hydraulics include e.g. power sources for ship deck equipment and power sources for other equipment operated with ship hydraulics.
  • hydraulic components that can be installed in the power unit of the hydraulic apparatus according to the invention can comprise the following, for example:
  • Figure 1 shows a hydraulic apparatus according to the invention with the power unit wall partially opened.
  • Figure 2 shows a hydraulic apparatus according to Figure 1, in which the external cladding part is removed, seen from one direction.
  • Figure 3 shows a hydraulic apparatus according to Figure 1, in which the external cladding part is removed, seen from another direction.
  • Figure 4 shows a power unit provided with a ceiling part.
  • Figure 5 is a sectional view of the oil tank 3.
  • Figure 6 is a sectional view of the power unit.
  • Figure 1 shows a hydraulic unit 1 with a power unit 2 and an oil tank 3 located outside the power unit 2.
  • the power unit 2 comprises a pump compartment 4 and a component compartment 5.
  • the external cladding part 6a, 6b of the power unit 2 is partially opened.
  • Figure 1 also shows an electric motor 7 installed in the pump compartment 2.
  • the outer surface of the oil tank 3 is additionally provided with connecting pipes 9.
  • FIG. 2 shows a hydraulic unit 1 according to Figure 1 with a power unit 2 and an oil tank 3 located outside the power unit 2.
  • the external cladding part 6a, 6b of the power unit 2 is completely removed for showing the assembly of the components of the hydraulic apparatus 1.
  • the power unit 2 comprises a pump compartment 4 and a component compartment 5.
  • the power unit 2 comprises a bottom part 23 and an internal partition wall 11.
  • the pump compartment 4 comprises a catchment basin 19 on the bottom part 23. Installed in the pump compartment 4 there are an electric motor 7 and a hydraulic pump 8 connected to each other and supported by a mounting frame 21 that is connected to the partition wall 11.
  • the hydraulic pump 8 is connected to the other hydraulic components (not shown) of the component compartment 5 with hydraulic hoses 10, while these components are connected to the oil tank 3 with another set of hydraulic hoses 10.
  • a tank part 31 In the oil tank 3 there are shown a tank part 31, an intermediate part 37 and a base part 32 with a drain basin 33 at its upper edge.
  • a conical ceiling 34 Above the oil tank 3 there is a conical ceiling 34 with hydraulic equipment 35 of the oil tank on top.
  • FIG 3 shows a hydraulic unit 1 according to Figure 1 with a power unit 2 and an oil tank 3 located outside the power unit 2.
  • the external cladding part 6a, 6b of the power unit is completely removed for showing the assembly of the components of the hydraulic apparatus.
  • the power unit 2 comprises a pump compartment 4 and a component compartment 5.
  • the power unit comprises a bottom part 23 and an internal partition wall 11.
  • the internal partition wall 11 is fastened to the bottom part 23 with a support bar 20.
  • the internal partition wall is provided with a perforated plate 18 for installing the hydraulic components.
  • the pump compartment 4 and the component compartment 5 have a catchment basin 19 on the bottom part 23.
  • other hydraulic components 12-16 are shown of which some are connected to the oil tank 3 with hydraulic hoses 10.
  • the other hydraulic components 12-16 shown in Figure 3 include a cooler 12, a valve 13, a pressure accumulator 14, a filter 15 and a circulation pump 16.
  • a tank part 31 In the oil tank 3 there are shown a tank part 31, an intermediate part 37 and a base part 32 with a drain basin 33 at its upper edge.
  • a conical ceiling 34 Above the oil tank 3 there is a conical ceiling 34 with hydraulic equipment 35 of the oil tank on top.
  • the outer surface of the oil tank 3 is additionally provided with connecting pipes 9.
  • Figure 4 shows a power unit 2 of the hydraulic apparatus having a ceiling part 41 above the pump compartment 4 and component compartment 5.
  • the ceiling part 41 is provided with an inlet air guide 44 and an outlet air guide 43.
  • a vertically adjustable guide closure 42 can be installed above the inlet air guide 44.
  • the power unit 2 comprises a pump compartment 4 and a component compartment 5.
  • the figure also shows the external cladding part 6a of the pump compartment 4.
  • the power unit comprises a bottom part 23 and an internal partition wall 11.
  • the pump compartment 4 and the component compartment 5 have a catchment basin 19 on the bottom part 23.
  • In the pump compartment 4 there is installed a combination of an electric motor and hydraulic pump 7-8 connected to each other and supported by a mounting frame 21 present on the partition wall 11.
  • the internal partition wall 11 is fastened to the bottom part 23 with a support bar 20.
  • the internal partition wall is provided with a perforated plate 18 for installing the hydraulic components.
  • the internal partition wall is provided with a sound insulator 24 and an air channel 22 for guiding the cooling air.
  • the outlet air guide 43 of the ceiling part 41 is installed above the air channel 22 for guiding the air removed from the compartments 4, 5 via the air channel 22.
  • other hydraulic components 12-16 and hydraulic hoses 10 are shown in the component compartment 4, other hydraulic components 12-16 and hydraulic hoses 10 are shown.
  • Figure 5 shows a sectional view of the oil tank 3. It comprises a tank part 31, an intermediate part 37 and a base part 32 with a drain basin 33 at its upper edge.
  • a conical ceiling 34 can be installed supported by the edge 31 a of the tank part 31 of the oil tank.
  • Inside the tank part 31 there is a spiral guide plate 36 comprising a center pipe 36a and spiral wings 36b.
  • the base part 32 has an inclined basin bottom 39, on top of which a catchment basin 38 of the tank is formed.
  • the tank part 31 additionally comprises a tangentially directed supply pipe 49 and a discharge pipe 48.
  • Figure 6 shows a sectional view of a power unit 2 comprising a pump compartment 4 and a component compartment 5 with a ceiling part 41 on top.
  • the ceiling part 41 is provided with an inlet air guide 44 and an outlet air guide 43.
  • the figure also shows the external cladding part 62 of the pump compartment 4 having also an inlet air grill 45.
  • the power unit comprises a bottom part 23 and an internal partition wall 11. In the connection points of the bottom part 23 and the ceiling part 41 as well as of the external cladding part 6a there is a sealing 46 for sealing the constructions.
  • the pump compartment 4 and the component compartment 5 have a catchment basin 19 on the bottom part 23.
  • the internal partition wall is provided with a perforated plate 18 for installing the hydraulic components.
  • the internal partition wall 11 is provided with a sound insulator 24 and an air channel 22 for guiding the cooling air.
  • the air channel 22 is formed of the wall components 11 a of the partition wall 11.
  • the component compartment 5 is additionally provided with an air cooler 47.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP04396068A 2003-09-29 2004-09-29 Hydraulische Vorrichtung und deren Herstellungs- und Verwendungsverfahren Withdrawn EP1520995A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20035166 2003-09-29
FI20035166A FI20035166A (fi) 2003-09-29 2003-09-29 Hydraulilaitteisto

Publications (2)

Publication Number Publication Date
EP1520995A2 true EP1520995A2 (de) 2005-04-06
EP1520995A3 EP1520995A3 (de) 2006-04-12

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EP04396068A Withdrawn EP1520995A3 (de) 2003-09-29 2004-09-29 Hydraulische Vorrichtung und deren Herstellungs- und Verwendungsverfahren

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EP (1) EP1520995A3 (de)
FI (1) FI20035166A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011127894A3 (de) * 2010-04-16 2011-12-08 Lösomat Schraubtechnik Neef Gmbh Gehäuse für ein hydraulikaggregat
DE102014002410A1 (de) * 2014-02-20 2015-08-20 Hydac Fluidtechnik Gmbh Kompaktaggregat

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316729A (en) * 1941-06-30 1943-04-13 Napler & Son Ltd D Tank for use in aircraft
US2432130A (en) * 1942-07-04 1947-12-09 Sharpies Corp Oil circulating and feeding system
US3020950A (en) * 1958-11-19 1962-02-13 Daimler Benz Ag Fuel tank construction, especially for motor vehicles
US3708977A (en) * 1970-12-31 1973-01-09 Int Basic Economy Corp Hydraulic power unit
US3791766A (en) * 1971-02-27 1974-02-12 Tokyo Keiki Kk Hydraulic pressure generating device
DE2342744A1 (de) * 1973-08-24 1975-03-06 Rexroth Gmbh G L Hydraulikaggregat
DE2934666A1 (de) * 1979-08-28 1981-03-19 Erich Ing.(grad.) 7913 Senden Altstadt Hydraulische antriebseinheit
JPS63293302A (ja) * 1987-05-26 1988-11-30 Tokyo Keiki Co Ltd 油圧作動油タンク
DE20004956U1 (de) * 2000-03-10 2000-10-19 Pracht Pumpen Gmbh Pumpenaggregat
US6311724B1 (en) * 1998-02-04 2001-11-06 Key Plastics, Inc. Reservoir for power steering system
US20030047218A1 (en) * 2001-09-13 2003-03-13 Cook James Edward Hydraulic power assembly having a removable top

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2316729A (en) * 1941-06-30 1943-04-13 Napler & Son Ltd D Tank for use in aircraft
US2432130A (en) * 1942-07-04 1947-12-09 Sharpies Corp Oil circulating and feeding system
US3020950A (en) * 1958-11-19 1962-02-13 Daimler Benz Ag Fuel tank construction, especially for motor vehicles
US3708977A (en) * 1970-12-31 1973-01-09 Int Basic Economy Corp Hydraulic power unit
US3791766A (en) * 1971-02-27 1974-02-12 Tokyo Keiki Kk Hydraulic pressure generating device
DE2342744A1 (de) * 1973-08-24 1975-03-06 Rexroth Gmbh G L Hydraulikaggregat
DE2934666A1 (de) * 1979-08-28 1981-03-19 Erich Ing.(grad.) 7913 Senden Altstadt Hydraulische antriebseinheit
JPS63293302A (ja) * 1987-05-26 1988-11-30 Tokyo Keiki Co Ltd 油圧作動油タンク
US6311724B1 (en) * 1998-02-04 2001-11-06 Key Plastics, Inc. Reservoir for power steering system
DE20004956U1 (de) * 2000-03-10 2000-10-19 Pracht Pumpen Gmbh Pumpenaggregat
US20030047218A1 (en) * 2001-09-13 2003-03-13 Cook James Edward Hydraulic power assembly having a removable top

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 118 (M-806), 23 March 1989 (1989-03-23) & JP 63 293302 A (TOKYO KEIKI CO LTD), 30 November 1988 (1988-11-30) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011127894A3 (de) * 2010-04-16 2011-12-08 Lösomat Schraubtechnik Neef Gmbh Gehäuse für ein hydraulikaggregat
CN102985700A (zh) * 2010-04-16 2013-03-20 罗素麦特拧紧技术公司 用于液压单元的壳体
RU2556949C2 (ru) * 2010-04-16 2015-07-20 Лезомат Шраубтехник Нееф Гмбх Корпус для гидравлического агрегата
DE102014002410A1 (de) * 2014-02-20 2015-08-20 Hydac Fluidtechnik Gmbh Kompaktaggregat
US10400801B2 (en) 2014-02-20 2019-09-03 Hydac Fluidtechnik Gmbh Compact unit

Also Published As

Publication number Publication date
FI20035166A0 (fi) 2003-09-29
FI20035166A (fi) 2005-03-30
EP1520995A3 (de) 2006-04-12

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