EP0244516A1 - Combinaison de réservoir de fluide, de radiateur de l'air/du fluide et de la manière de fixage du moteur/de la pompe pour une unité hydraulique - Google Patents

Combinaison de réservoir de fluide, de radiateur de l'air/du fluide et de la manière de fixage du moteur/de la pompe pour une unité hydraulique Download PDF

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Publication number
EP0244516A1
EP0244516A1 EP86303192A EP86303192A EP0244516A1 EP 0244516 A1 EP0244516 A1 EP 0244516A1 EP 86303192 A EP86303192 A EP 86303192A EP 86303192 A EP86303192 A EP 86303192A EP 0244516 A1 EP0244516 A1 EP 0244516A1
Authority
EP
European Patent Office
Prior art keywords
fluid
tank
air
prime mover
combination
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Withdrawn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
EP86303192A
Other languages
German (de)
English (en)
Inventor
Maurice D. Drake
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.)
Individual
Original Assignee
Individual
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
Priority to US06/638,947 priority Critical patent/US4585398A/en
Application filed by Individual filed Critical Individual
Priority to EP86303192A priority patent/EP0244516A1/fr
Publication of EP0244516A1 publication Critical patent/EP0244516A1/fr
Withdrawn legal-status Critical Current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
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • F04B23/026—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir a pump-side forming a wall of the reservoir

Definitions

  • Hydraulic power units normally comprise a prime mover, for example, an electric motor, gasoline or diesel engine, a pump, fluid tank, control valves, cooler, filters, etc.
  • a prime mover for example, an electric motor, gasoline or diesel engine, a pump, fluid tank, control valves, cooler, filters, etc.
  • the prime mover/pump assembly requires special shaft alignment and shimming and is usually built upon a machined base, which is mounted on, under, or beside the fluid tank.
  • the fluid tank is normally sized so that its fluid volume is three times the pump flow rate.
  • such known tanks are large and expensive and require two to three times the floor space that the prime mover/pump assembly alone requires.
  • the mounting system of the instant invention provides for: (1) relatively efficient and compact mounting of the prime mover and the pump, (2) a built-­in air/fluid cooling system, (3) a deaeration system, and (4) efficient fluid storage.
  • the assembled power unit is one-third to one-fifth the size of power units currently on the market, the complete assembly requiring less than 5% more floor space than the prime mover/pump assembly along.
  • a significant feature is that the ratio between tank volume and the pump flow is reduced from 3:1 to 1:1.
  • the width of the fluid tank is established by the length of the prime mover and the pump shafts and the coupling spacing requirement.
  • Two mounting flanges, one for the prime mover and one for the pump are first machined then welded into the sides of the tank. The flanges are thereafter line bored to assure precise shaft alignment.
  • a large diameter torque tube interconnects the two flanges and absorbs the reaction torque between the prime mover and pump.
  • the torque tube acts also as an interface for a built-in air/fluid cooler. Hot fluid that has been returned to the tank transfers its heat to the cool torque tube as it flows over and around the outside surface of the torque tube. The inside surface of the torque tube is cooled by a steady flow of cool air, which picks up the heat from the torque tube and trans­fers it away from the tank.
  • a hydraulic power unit 10 comprises a combination fluid tank and mounting system 12 for the support of, for example, an electric motor 14 and hydraulic pump 16.
  • the tank 12 is secured to a combination base member and drip pan 18.
  • the power unit 10 is provided with a con­ventional external check valve 20 and filter 22.
  • the tank 12 is provided with a conventional float switch 24 and internal float 26.
  • the combination oil tank and mounting system 12 comprises a generally rectangular enclosure 30 which may be a casting or a weldment.
  • the enclosure 30 is provided with a pair of mounting plates 32 and 34 for face mounting of the motor 14 and pump 16, respectively.
  • a torque tube 36 extends from the mounting plate 32 internally of the enclosure 30 to the mounting plate 34 thereby to serve the dual function of absorbing reaction torque between the motor 14 and pump 16 as well as providing a relatively large cylindrical surface for conductive cooling of oil internally of the tank 30.
  • a motor drive shaft 36 is connected to a coaxially related pump drive shaft 38 by a flexible coupling 39.
  • the mounting plate 34 is provided with a plurality of air inlet apertures 40 spaced radially outwardly of a drive shaft aperture 42.
  • the mounting plate 34 is also provided with a plurality of air outlet apertures 44 spaced radially outwardly of the inlet apertures 40 and separated therefrom by a baffle tube 46 which extends inwardly of the mounting plate 34 into close proximate relation to a fan 48 mounted on the drive shaft 37 of the motor 14.
  • the fan 48 draws air axially inwardly through the apertures 42 in the mounting plate 34, then forces the air radially outwardly to the torque tube 36 and thence axially out­wardly through the apertures 44 in the plate 34 effecting cooling of the internal surface of the torque tube 36 and thus, cooling the fluid disposed externally thereof within the tank 30.
  • oil is returned to the tank 30 through a downwardly extending tube 50 that terminates at the lower end of a deaerating compartment 52 defined by a baffle plate 54.
  • Upward flow of fluid is induced hydraulically within the chamber 52 which deaerates the fluid as it flows over the baffle 54, about the tube 36 to a discharge outlet 56 thereby minimizing the volume requirement of the tank 30.
  • the instant invention provides for com­pact mounting of both the prime mover and pump of a power unit.
  • the mounting provides for the acceptance of the relatively heavy torsional loads induced by the motor and pump in a minimum of space.
  • the cooling air flow is developed by a blower wheel that is driven by the prime mover.
  • the air flows axially inwardly then radially outwardly to cool the inner surface of the torque tube, then out of the system.
  • the air is ported in and out of the cooler through ports machined into the pump mounting flange.
  • the tank baffle system assures that the fluid is deaerated before it is returned to the pump.
  • the system hydraulically lifts fluid having entrained air bubbles to the surface of the fluid in the tank which allows the bubbles to escape before the fluid is returned to the pump. In this manner, the tank of the instant invention can deaerate fluid up to four times faster than a conventional tank.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
EP86303192A 1984-08-08 1986-04-28 Combinaison de réservoir de fluide, de radiateur de l'air/du fluide et de la manière de fixage du moteur/de la pompe pour une unité hydraulique Withdrawn EP0244516A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06/638,947 US4585398A (en) 1984-08-08 1984-08-08 Combination fluid tank, air/fluid cooler and prime mover/pump mounting system for a hydraulic power unit
EP86303192A EP0244516A1 (fr) 1986-04-28 1986-04-28 Combinaison de réservoir de fluide, de radiateur de l'air/du fluide et de la manière de fixage du moteur/de la pompe pour une unité hydraulique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86303192A EP0244516A1 (fr) 1986-04-28 1986-04-28 Combinaison de réservoir de fluide, de radiateur de l'air/du fluide et de la manière de fixage du moteur/de la pompe pour une unité hydraulique

Publications (1)

Publication Number Publication Date
EP0244516A1 true EP0244516A1 (fr) 1987-11-11

Family

ID=8195989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86303192A Withdrawn EP0244516A1 (fr) 1984-08-08 1986-04-28 Combinaison de réservoir de fluide, de radiateur de l'air/du fluide et de la manière de fixage du moteur/de la pompe pour une unité hydraulique

Country Status (1)

Country Link
EP (1) EP0244516A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465956A1 (fr) * 1990-07-12 1992-01-15 WIWA WILHELM WAGNER GMBH & CO. KG Dispositif d'alimentation sous pression
EP0694700A1 (fr) * 1994-07-27 1996-01-31 HUGO JUNKERS WERKE GmbH Système hydraulique mobile
WO1998042986A1 (fr) * 1997-03-20 1998-10-01 Flutec Fluidtechnische Geräte Gmbh Dispositif de refroidissement de fluide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994624A (en) * 1975-11-24 1976-11-30 Daniel Industries, Inc. Water envelope pump and tank system
US4302160A (en) * 1979-08-01 1981-11-24 Hofmann Jr Rudolf Silently operating fluid pump unit
GB2114235A (en) * 1982-01-22 1983-08-17 Panther Equip Ltd Hydraulic power unit
WO1984003915A1 (fr) * 1983-04-07 1984-10-11 Fluidtech Gmbh Dispositif pour la liaison d'un boitier de moteur sur une pompe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994624A (en) * 1975-11-24 1976-11-30 Daniel Industries, Inc. Water envelope pump and tank system
US4302160A (en) * 1979-08-01 1981-11-24 Hofmann Jr Rudolf Silently operating fluid pump unit
GB2114235A (en) * 1982-01-22 1983-08-17 Panther Equip Ltd Hydraulic power unit
WO1984003915A1 (fr) * 1983-04-07 1984-10-11 Fluidtech Gmbh Dispositif pour la liaison d'un boitier de moteur sur une pompe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465956A1 (fr) * 1990-07-12 1992-01-15 WIWA WILHELM WAGNER GMBH & CO. KG Dispositif d'alimentation sous pression
EP0694700A1 (fr) * 1994-07-27 1996-01-31 HUGO JUNKERS WERKE GmbH Système hydraulique mobile
WO1998042986A1 (fr) * 1997-03-20 1998-10-01 Flutec Fluidtechnische Geräte Gmbh Dispositif de refroidissement de fluide
US6290473B1 (en) 1997-03-20 2001-09-18 Flutec Fluidtechnische Gerate Gmbh Fluid cooling device
CN1097683C (zh) * 1997-03-20 2003-01-01 Hydac流体技术有限公司 液体冷却装置

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