EP0618370A2 - Pompe pour liquide à entraînement électrique - Google Patents

Pompe pour liquide à entraînement électrique Download PDF

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Publication number
EP0618370A2
EP0618370A2 EP93106943A EP93106943A EP0618370A2 EP 0618370 A2 EP0618370 A2 EP 0618370A2 EP 93106943 A EP93106943 A EP 93106943A EP 93106943 A EP93106943 A EP 93106943A EP 0618370 A2 EP0618370 A2 EP 0618370A2
Authority
EP
European Patent Office
Prior art keywords
pump
pump according
closure element
rotor
opening
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Withdrawn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
EP93106943A
Other languages
German (de)
English (en)
Other versions
EP0618370A3 (fr
Inventor
Herbert Hohenleitner
Ulli Weinberg
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
Application filed by Individual filed Critical Individual
Priority to DE9311133U priority Critical patent/DE9311133U1/de
Priority to CZ931552A priority patent/CZ155293A3/cs
Priority to CA 2105359 priority patent/CA2105359A1/fr
Publication of EP0618370A2 publication Critical patent/EP0618370A2/fr
Publication of EP0618370A3 publication Critical patent/EP0618370A3/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Withdrawn legal-status Critical Current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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities

Definitions

  • the invention relates to an electrically drivable liquid pump with the features of the preamble of patent claim 1.
  • a known electrically drivable liquid pump has a pump housing which is provided with a suction opening and with an outlet opening.
  • the suction opening can either be arranged directly under the water level of a container or can be provided with a suction pipe so that water is sucked into the pump housing when the pump is operating.
  • the outlet opening is designed so that liquid-carrying elements can be connected to it.
  • a pump chamber is arranged in the pump housing and is connected to the suction and the outlet opening.
  • a rotor of an electric motor coupled to a feed wheel is fastened on a bearing axis, the rotor extending between the field-generating elements arranged between the pump housings.
  • a closure element is provided on the pump housing, which is rotatably fastened in a circular opening of the pump housing and virtually forms a wall of the pump chamber. The closure element serves to be able to engage in the pump housing if, for example, dirt parts have been sucked into the pump chamber and prevent the rotor from starting when the pump is switched on.
  • the axis of the rotor and the feed wheel is fastened in the rear wall of the pump chamber opposite the closure element.
  • the closure element is removed from the opening of the pump housing, the rotor of the electric motor and the feed wheel can be pulled off the axis and a cleaning process can be carried out be subjected.
  • the axis in the rear wall of the pump housing is only plug-in, there is a risk that when the rotor and the feed wheel are removed, the axis will also slide out of the opening receiving it.
  • the assembly of the corresponding elements is not without problems, at least for a layperson. It is also to be feared that bearing parts will be injured and axle parts will be bent, so that trouble-free operation of the pump after multiple disassembly is not always guaranteed.
  • the invention has for its object to improve the electrically drivable liquid pump with the features of claim 1 such that a safe pumping operation is guaranteed even under difficult operating conditions.
  • This object is achieved by the characterizing features of claim 1 in that the rotor of the electric motor and the coupled feed wheel of the pump-bearing axis is mounted centrally in the closure element such that when the closure element is removed from the circular opening of the pump housing, the rotor, the feed wheel, the axis and the closure element carrying these elements form a unit.
  • the entire unit can, for example, be cleaned under liquid water and reinserted into the pump housing with a single movement. Because of the mounting of the axle in the closure element, separate handling of the axle is not necessary. A cleaning and service process can also be carried out by laypersons in the shortest possible time.
  • a rotor securing element At the free end of the axis, a rotor securing element should be arranged, which can advantageously have a tip aligned with the axis.
  • the rotor securing element is inserted into the recess in the wall of the pump chamber during the insertion process.
  • the diameter of the rotor is advantageously smaller than the diameter of the delivery wheel, the delivery wheel can be arranged in a section of the pump chamber that is enlarged compared to the rotor section of the pump chamber, as a result of which the pump output can be increased.
  • control segment on the closure element, which can be brought more or less into line with the outlet opening of the pump chamber. If - as provided in claim 16 - the control segment is designed in the manner of a wedge diaphragm, the control can be carried out accordingly with sensitivity.
  • Claim 17 relates to a particularly advantageous arrangement of the suction opening, which is to run between the lower free ends of the field-generating elements of the motor of the pump. This makes it possible to pull the field-generating elements, also called stators, far around the rotor, almost without interruption, to the underside of the pump, which ensures a strong pump run and pump start.
  • the suction opening is preferably a slot which corresponds approximately to the depth of the section of the pump chamber which receives the rotor of the pump motor.
  • An adjusting device influencing the intake flow can be arranged in the intake opening. This enables similar control options for the pump output as the wedge diaphragm control in the pump outlet area.
  • the control of the pump output can be adjusted particularly sensitively if the control slide is provided with a spindle drive which has a rotary knob protruding from the pump housing. This is particularly important because the pump can also be used as a room fountain pump and precisely adjustable and reproducible pump output ratios are particularly important in a room, since it is imperative that water is not sprayed beyond the area of the room fountain.
  • the pump is also particularly advantageous to attach the pump with its lower flange connection to a squeegee that has a large-sized suction plate that can have a diameter that is approximately the same as or even larger than the diameter of the pump housing.
  • the pump which is supposed to serve as a support for an entire fountain system, can be securely attached to the bottom of a well basin or, for example, to a metal plate inserted into a pond.
  • the suction plate of the suction foot can advantageously be provided with a mechanical adjusting device for lifting the center of the suction plate, as a result of which the suction plate can be held particularly well on the ground.
  • the outer end 20 of the axis 9 is fixed centrally in a recess 21 of the inside 14 of the closure element 12, so that the axis 9 rotates when the handle 13 is rotated relative to the pump housing 2.
  • the elements 7 and 8 mounted on the axis 9 either follow this rotation or at least a detachment of these parts from dirt particles is ensured, which can be located within the pump chamber 5.
  • the free end 22 of the axis 9 rests in the final assembly position in a funnel-shaped recess 23 of the wall 24 opposite the closure element 12 of the pump chamber 5 accommodating the rotor 7, thereby centering the axis 9 with the rotor 7 and feed wheel 8 into the pump housing 2
  • Axis is in its target position.
  • a rotor securing element 25 is attached to the free end 22 of the axis 9 and has a tip 26 which is aligned with the axis 9 and which dips into the funnel-shaped recess 23.
  • the end 20 of the axis 9 arranged in the closure element 12 rests in an elastic bearing part 30, which is designed as a rubber or elastic plastic sleeve.
  • the diameter of the feed wheel 8 is smaller than the diameter of the closure element 12 and the diameter of the rotor 7 is smaller than the diameter of the feed wheel 8.
  • the diameter of the portion of the pump chamber accommodating the rotor 7 is smaller than that Diameter of the feed wheel 8, which results in an improvement in pump performance.
  • Drawing figure 2 shows the parts already explained in more detail in drawing figure 1, but the related Unit closure element 12 with handle 13, axis 9, feed wheel 8, rotor 7 and rotor securing element 25 are pulled out of the pump chamber 5 of the pump housing 2.
  • this assembly is pushed into the pump housing 2 in the direction of the arrow 35, the tip 26 of the rotor securing element 25 lies against the correspondingly shaped inner surfaces of the recess 23, as a result of which the axis 9 is fixed in its desired operating position.
  • the adjustment opening 51 has a wedge-shaped, elongated shape and runs along the circumference of the diaphragm 40. In the exemplary embodiment shown, it covers a segment area of approximately 90 ° of the diaphragm 40.
  • a base frame 60 and a liquid-carrying element 61 are also indicated in drawing FIG. 1 and can be connected to the pump housing 2 via flange connections 62, 63.
  • the liquid pump 1 shown there differs with its pump housing 2 initially from the pump shown in FIG. 1 in that the flange connections 62 and 63 have the same dimensions, which in principle opens up the possibility of attaching liquid-carrying elements 61 to the pump 1 both above and below .
  • Fig. 5 clearly shows that the suction opening 3 between the lower Free ends of the stators 6 run, ie the stators enclose the rotor 7 as far as possible and only leave a gap on the underside in which the suction opening 3 is arranged.
  • the suction opening can have different lengths, the maximum length of the suction opening 3 can correspond approximately to the depth D (cf. FIG. 4) of the section of the pump chamber 5 receiving the rotor 7.
  • an adjusting device 70 which influences the suction flow and which comprises a slide 71 which can be inserted into the slot of the suction opening 3 and a spindle drive 72, the spindle drive 72 carrying a rotary knob 73 protruding from the pump housing 2.
  • FIG. 6 A suction foot 80 with a suction plate 81 is shown below the pump, the diameter of which corresponds approximately to the diameter of the pump housing 2.
  • the suction plate 81 of the suction foot 80 is coupled to a mechanical adjusting device in the form of an eccentric lever 83, as a result of which the center 85 of the suction plate can be raised and lowered via a connecting part 84.
  • This allows a concave curvature of the suction plate 81 to be achieved, which ensures a strong negative pressure and thus a particularly firm hold on the suctioned-in surface.
  • Inlet openings 86 are provided above the suction plate 81 and are connected to the flange connection 62 of the pump housing 2.
  • a filter chamber 87 which is at least partially filled with a filter material 88, for example a sponge.
  • the adjusting device namely the eccentric lever 83, runs transversely through the filter chamber 87.
  • FIG. 7 only serves to clarify once again the position of the wedge diaphragm 90, which is arranged on the closure element 12.
  • the wedge diaphragm 90 can - as is particularly clear in part 7a - be brought by turning in front of the outlet opening 4 and, depending on its rotational position with respect to the outlet opening 4, develops a more or less strong locking effect due to its wedge shape, which affects the pump output.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP93106943A 1993-02-19 1993-04-29 Pompe pour liquide à entraînement électrique. Withdrawn EP0618370A3 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE9311133U DE9311133U1 (de) 1993-02-19 1993-04-29 Elektrisch antreibbare Flüssigkeitspumpe
CZ931552A CZ155293A3 (en) 1993-02-19 1993-07-30 Pump for liquids with electric drive
CA 2105359 CA2105359A1 (fr) 1993-02-19 1993-09-01 Pompe electrique pour liquides

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934304945 DE4304945A1 (de) 1993-02-19 1993-02-19 Elektrisch antreibbare Flüssigkeitspumpe
DE4304945 1993-02-19

Publications (2)

Publication Number Publication Date
EP0618370A2 true EP0618370A2 (fr) 1994-10-05
EP0618370A3 EP0618370A3 (fr) 1994-12-21

Family

ID=6480757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93106943A Withdrawn EP0618370A3 (fr) 1993-02-19 1993-04-29 Pompe pour liquide à entraînement électrique.

Country Status (2)

Country Link
EP (1) EP0618370A3 (fr)
DE (1) DE4304945A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1041153A (fr) * 1950-08-18 1953-10-21 Charmilles Sa Ateliers Perfectionnements apportés aux groupes moto-pompe hydraulique
US2766695A (en) * 1953-09-25 1956-10-16 Charmilles Sa Ateliers Motor-pump unit
GB963993A (en) * 1960-10-17 1964-07-15 Hollesens Fabrikker As H Improvements in and relating to electric motor-driven liquid pumps
JPS59592A (ja) * 1982-06-24 1984-01-05 Mitsubishi Electric Corp 電動ポンプ装置
EP0260501A1 (fr) * 1986-09-12 1988-03-23 Siemens Aktiengesellschaft Pompe entraînée par un électromoteur
DE3822897A1 (de) * 1988-07-06 1990-01-11 Webasto Ag Fahrzeugtechnik Umwaelzpumpe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796835A (en) * 1954-07-30 1957-06-25 Howard T White Motor driven pumps
CH396640A (de) * 1963-01-16 1965-07-31 Ruetschi Ag Pumpenbau Brugg K Kreiselpumpe mit eingebauter Leistungsregulierung
DE1895968U (de) * 1964-04-15 1964-07-02 Hans Dr Ing Moser Umwalzpumpe.
DE1528639A1 (de) * 1965-08-25 1969-10-30 Allweiler Ag Hydraulisch regelbare Heizungsumwaelzpumpe,insbesondere fuer Gasbeheizungsanlagen
DE2618593A1 (de) * 1976-04-28 1977-11-10 Hermetic Pumpen Gmbh Spaltrohrmotor-pumpenaggregat
DE8126763U1 (de) * 1981-09-14 1982-09-23 Gunther Eheim Fabrik Elektromechanischer Erzeugnisse, 7301 Deizisau "filter fuer aquarien"
DE3516061A1 (de) * 1984-05-05 1986-01-09 Vitakraft-Werke Wührmann & Sohn, 2800 Bremen Kreiselpumpe
DE3629964A1 (de) * 1986-09-03 1988-03-17 Karsten Laing Kreiselpumpe mit sphaerischem luftspalt
US4836147A (en) * 1987-12-14 1989-06-06 Ford Motor Company Cooling system for an internal combustion engine
DE4122487C2 (de) * 1991-07-06 1997-09-18 Grundfos Int Förderaggregat aus einer Strömungsarbeitsmaschine und aus einem Antriebsmotor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1041153A (fr) * 1950-08-18 1953-10-21 Charmilles Sa Ateliers Perfectionnements apportés aux groupes moto-pompe hydraulique
US2766695A (en) * 1953-09-25 1956-10-16 Charmilles Sa Ateliers Motor-pump unit
GB963993A (en) * 1960-10-17 1964-07-15 Hollesens Fabrikker As H Improvements in and relating to electric motor-driven liquid pumps
JPS59592A (ja) * 1982-06-24 1984-01-05 Mitsubishi Electric Corp 電動ポンプ装置
EP0260501A1 (fr) * 1986-09-12 1988-03-23 Siemens Aktiengesellschaft Pompe entraînée par un électromoteur
DE3822897A1 (de) * 1988-07-06 1990-01-11 Webasto Ag Fahrzeugtechnik Umwaelzpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 83 (M-290) 17. April 1984 & JP-A-59 000 592 (MITSUBISHI) 5. Januar 1984 *

Also Published As

Publication number Publication date
EP0618370A3 (fr) 1994-12-21
DE4304945A1 (de) 1994-08-25

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