EP0810717B1 - Unité de pompage électro-hydraulique - Google Patents

Unité de pompage électro-hydraulique Download PDF

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Publication number
EP0810717B1
EP0810717B1 EP97106450A EP97106450A EP0810717B1 EP 0810717 B1 EP0810717 B1 EP 0810717B1 EP 97106450 A EP97106450 A EP 97106450A EP 97106450 A EP97106450 A EP 97106450A EP 0810717 B1 EP0810717 B1 EP 0810717B1
Authority
EP
European Patent Office
Prior art keywords
oil
pump
motor
pump unit
unit according
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.)
Expired - Lifetime
Application number
EP97106450A
Other languages
German (de)
English (en)
Other versions
EP0810717A3 (fr
EP0810717A2 (fr
Inventor
Obering Rudolf Brunner
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.)
Hawe Hydraulik GmbH and Co KG
Original Assignee
Hawe Hydraulik GmbH and Co KG
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 Hawe Hydraulik GmbH and Co KG filed Critical Hawe Hydraulik GmbH and Co KG
Publication of EP0810717A2 publication Critical patent/EP0810717A2/fr
Publication of EP0810717A3 publication Critical patent/EP0810717A3/fr
Application granted granted Critical
Publication of EP0810717B1 publication Critical patent/EP0810717B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
    • D06F75/16—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the reservoir being heated to produce the steam

Definitions

  • the invention relates to an electrohydraulic motor pump unit according to Preamble claim 1.
  • Such units are used, for example, on cranes or machine tools to supply hydraulic consumers, e.g. Cylinders, motors, actuators and the like. Used on a large scale, with a largely standardized Construction has prevailed, in which the electric sub-oil motor with standing Shaft and above the oil pump in the common, forming the oil reservoir Housing is inserted.
  • Such units are known from EP-A-0 198 250, EP-A-0 284 746 and DE-A 24 13 691. This construction principle is the same for others Units common in which a liquid by means of a pump and one in the Liquid running electric motor is pumped (GB-A-20 29 505).
  • the housing Because in that electro-hydraulic motor pump unit the housing the total amount of oil (Usable volume and dead volume) takes up to supply the consumer the oil level in the housing moves up and down depending on consumption down. This difference between the highest and the lowest Oil level determines the usable volume.
  • the size of the usable volume has an influence on the container size and thus the total size of the unit. Because the oil existing in the housing and absorb the heat given off by the electric motor must, and also absorbs heat through his work, and since the service life and quality of the oil are influenced by the heat absorption or the oil is very sensitive to short-term overheating, the oil level may only be up to the upper end of the electric motor. Completely exposed winding heads could otherwise cause the oil to overheat locally. It is therefore in As a rule, a housing that is too large in relation to the usable volume is necessary.
  • a motor pump unit of another type in which is a split motor with water filling located below the pump in the housing is.
  • a lower half of the housing contains a sealed, oil-filled one Chamber for lubricating the bearings in the unit.
  • the actual pumped medium of the motor pump unit never reaches the lower part of the Housing.
  • the pump In a motor pump unit known from DE-A-32 37 967, the pump is arranged on top of the electric motor, which in turn with spacer feet on the Case bottom stands. At least part of the oil supply is found as a dead volume below the electric motor.
  • the invention has for its object an electrohydraulic motor pump unit to create the type mentioned, with the same housing size a significantly larger oil volume or for a given oil volume enables a significantly lower housing.
  • the design according to claim 2 is advantageous because even after the Oil level to below the oil pump, the upper stator winding heads of the lower oil electric motor remain covered with hydraulic oil.
  • a stable definition of the sub-oil electric motor is given according to claim 3.
  • the heat emitted by the lower oil electric motor is not only in the hydraulic oil transferred, but also via the heat transfer sleeve in the Housing part and from this to the ambient air.
  • the embodiment according to claim 4 is manufacturing and assembly technology Cheap.
  • the additional joint enables the oil pump to be easily installed.
  • the end plate of the heat transfer sleeve has a double function, since it contributes to the structural strength of the sleeve and the oil pump is supported.
  • a rotary bearing of the shaft of the sub-oil electric motor is also expedient provided in the end plate.
  • the float switch either operates a warning device and / or interrupts the power supply for the sub-oil electric motor.
  • Fig. 1 is a partial longitudinal section of an electrohydraulic motor pump unit.
  • the electrohydraulic motor pump unit A has in one standing housing G an under oil electric motor M as a drive source for a Oil pump P on.
  • a cooling fan F e.g. a fan wheel
  • a unit A designed only for intermittent operation could also be designed without the cooling fan F.
  • the housing G has an upper housing part 1 with a cover cap 2 for the Cooling fan F on.
  • the upper housing part 1 is pressed onto a lower housing part 3 and is secured by clamping screws 16.
  • the lower housing part 3 is expediently a molded part, e.g. made of light metal or a light Metal alloy, and is closed by a bottom 4, e.g. through an inserted sheet metal plate.
  • the sub-oil electric motor M expediently an asynchronous motor, is close the bottom 4 with the shaft 10 installed in the lower housing part 3. He exists among other things from a stator 6 with upper and lower stator winding heads 7 and a runner 8. Between the outer circumference of the runner 8 and the inner circumference of the stator 6, a gap 9 is provided. The stator 6 is in a heat transfer sleeve 5 pressed in while the rotor 8 is pressed onto the shaft 10 is.
  • the lower oil electric motor M is installed with the shaft 10 stationary.
  • the aggregate A is used in the standing position shown in FIG. 1.
  • the shaft 10 is in Floor 4 in a warehouse 11, e.g. a plain bearing, pivoted. At her top At the end, however, the shaft 10 is in another bearing 13, e.g. a rolling bearing, stored in an end plate 5 'of the heat transfer sleeve 5.
  • the oil pump P is a gear pump in the embodiment shown is attached with its housing 14 on the top of the end plate 5 'and by means of an auxiliary shaft 12 is driven, which is coupled to the shaft 10.
  • the auxiliary wave However, 12 could also be part of the shaft 10.
  • the auxiliary shaft 12 settles in this embodiment up to the cooling fan F. From the housing 14 of the oil pump P leads a pressure line 15 out of the housing G at the bottom. The oil return is not recognizable in this illustration.
  • the oil pump P sucks by means of a connecting piece 17 that extends further downward than shown.
  • a float switch 19 can be provided the power supply when the oil level N drops to a certain depth for the lower oil electric motor M to switch off or to initiate a warning signal.
  • a usable volume of hydraulic oil is available, which is determined by the difference between the highest position of the oil level N and a lowest position is determined is either set by the position of the float switch 19 or straight is so low that the upper stator winding heads 7 are not exposed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • General Induction Heating (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Soft Magnetic Materials (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (9)

  1. Unité de pompage électro-hydraulique (A) pour alimenter au moins un récepteur externe en huile hydraulique dans le circuit, comportant un moteur électrique à bain d'huile (M) à arbre vertical (10, 12) et comportant au moins une pompe à huile (P) pouvant être entraínée par l'arbre dans un carter commun (G) qui contient une réserve d'huile pour la pompe à huile et pour le refroidissement du moteur électrique à bain d'huile, caractérisée en ce que le moteur électrique à bain d'huile (M) est disposé à proximité du fond (4) du carter (G) et la pompe à huile (P) au-dessus du moteur électrique à bain d'huile (M).
  2. Unité de pompage électro-hydraulique selon la revendication 1, caractérisée en ce que le moteur électrique à bain d'huile (M) est un moteur asynchrone comportant aux deux extrémités des têtes de bobines de stator (7), et que la pompe (P) est disposée au-dessus des têtes de bobines de stator (7) supérieures.
  3. Unité de pompage électro-hydraulique selon les revendications 1 et 2, caractérisée en ce que le stator (6) entourant le rotor (8) est disposé dans une douille de transfert thermique (5) en forme de pot, qui par l'intermédiaire d'un pont thermique (18) métallique est reliée à une pièce de carter (3), de préférence une pièce de carter inférieure.
  4. Unité de pompage électro-hydraulique selon la revendication 3, caractérisée en ce qu'un joint de séparation ayant des surfaces de transfert thermique mutuellement juxtaposées est prévu en tant que pont thermique (18) entre la douille de transfert thermique (5) et la pièce de carter (3).
  5. Unité de pompage électro-hydraulique selon au moins l'une des revendications 1 à 4, caractérisée en ce que la pompe à huile (P) est disposée sur une plaque d'extrémité (5') de la douille de transfert thermique (5).
  6. Unité de pompage électro-hydraulique selon au moins Tune des revendications 1 à 5, caractérisée en ce que la pompe à huile (P) est une pompe à engrenage ou à ailettes simple ou multiple.
  7. Unité de pompage électro-hydraulique selon au moins Tune des revendications 1 à 5, caractérisée en ce que la pompe à huile (P) présente au moins un élément de pompage à piston radial.
  8. Unité de pompage électro-hydraulique selon au moins Tune des revendications 1 à 7, caractérisée en ce qu'à l'extérieur sur une pièce de carter supérieure (1) est prévu un ventilateur de refroidissement (F), présentant de préférence une roue de ventilateur pouvant être entraínée par l'arbre (10, 12).
  9. Unité de pompage électro-hydraulique selon au moins Tune des revendications 1 à 8, caractérisée en ce qu'un interrupteur à flotteur (19) est disposé à une hauteur prédéfinie dans le volume d'huile utile et est relié à un transmetteur d'alarme et/ou à l'alimentation électrique du moteur électrique (M) à bain d'huile.
EP97106450A 1996-05-31 1997-04-18 Unité de pompage électro-hydraulique Expired - Lifetime EP0810717B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29609702U DE29609702U1 (de) 1996-05-31 1996-05-31 Bügeleisen
DE29609702U 1996-05-31

Publications (3)

Publication Number Publication Date
EP0810717A2 EP0810717A2 (fr) 1997-12-03
EP0810717A3 EP0810717A3 (fr) 2000-11-22
EP0810717B1 true EP0810717B1 (fr) 2003-07-09

Family

ID=8024640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106450A Expired - Lifetime EP0810717B1 (fr) 1996-05-31 1997-04-18 Unité de pompage électro-hydraulique

Country Status (3)

Country Link
EP (1) EP0810717B1 (fr)
AT (1) ATE244823T1 (fr)
DE (2) DE29609702U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3504433B1 (fr) 2016-08-29 2020-04-22 Hydac Fluidtechnik GmbH Ensemble motopompe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2413691B2 (de) * 1974-03-21 1976-04-29 Druckoelpumpe
DE3237967A1 (de) * 1982-10-13 1984-04-19 Allweiler Ag, 7760 Radolfzell Motorpumpenaggregat
DE3513472C2 (de) * 1985-04-15 1995-04-27 Heilmeier & Weinlein Hydraulisches Motor-Pumpen-Aggregat
DE3705909A1 (de) * 1987-02-24 1988-09-01 Heilmeier & Weinlein Hydraulisches pumpenaggregat
DE3721398A1 (de) * 1987-06-29 1989-01-19 Bornemann J H Gmbh & Co Foerderaggregat bestehend aus einer pumpe mit einer antriebseinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3504433B1 (fr) 2016-08-29 2020-04-22 Hydac Fluidtechnik GmbH Ensemble motopompe

Also Published As

Publication number Publication date
ATE244823T1 (de) 2003-07-15
DE59710403D1 (de) 2003-08-14
EP0810717A3 (fr) 2000-11-22
DE29609702U1 (de) 1996-08-29
EP0810717A2 (fr) 1997-12-03

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