EP0843100B1 - Pumpe mit fester Einschaltvorrichtung - Google Patents

Pumpe mit fester Einschaltvorrichtung Download PDF

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Publication number
EP0843100B1
EP0843100B1 EP97402458A EP97402458A EP0843100B1 EP 0843100 B1 EP0843100 B1 EP 0843100B1 EP 97402458 A EP97402458 A EP 97402458A EP 97402458 A EP97402458 A EP 97402458A EP 0843100 B1 EP0843100 B1 EP 0843100B1
Authority
EP
European Patent Office
Prior art keywords
pump
sensor
detector
liquid
motor
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
EP97402458A
Other languages
English (en)
French (fr)
Other versions
EP0843100A1 (de
Inventor
Christian Mabillot
Jacques Berthon
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.)
KSB SAS
Original Assignee
KSB SAS
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 KSB SAS filed Critical KSB SAS
Publication of EP0843100A1 publication Critical patent/EP0843100A1/de
Application granted granted Critical
Publication of EP0843100B1 publication Critical patent/EP0843100B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply

Definitions

  • Such pumps have the disadvantage of being large size, which implies giving larger dimensions to the sump that receives the pump.
  • these float systems are subject to break down quite easily by blocking the float.
  • the float must, in the low position in which it controls the stopping of the pump, float in a sufficient quantity of liquid, otherwise we would not have not a sufficient safety margin, taking into account deposits and inertia of the float, to be sure, that in this lowest position, the engine of the pump is stopped and it stops sucking. The pump then stops there is still liquid in the sump.
  • the invention overcomes these drawbacks with a less pump bulky, less prone to breaking down and which allows emptying completely the sump.
  • a pump as defined in the characterizing part of claim 1 is disclosed for example in US-A-4,396,353.
  • the pump according to the invention has a waterproof casing and vents suction opening at the bottom of the pump. It is characterized by a static liquid presence detector, which is mounted in the manifold discharge at a level lower than that of the mouth of the tubing of discharge and by an on / off circuit of the pump motor controlled by the detector.
  • a pressure sensor an optical sensor emitting a laser beam which will be interrupted when there is presence of liquid putting thus the pump in operation and stopping it when the beam is restored by the presence of air
  • an ultrasonic generator emitting a beam which will be interrupted when water is present, thus putting the pump in operation, it stops when the ultrasound reappear in the presence of air
  • a temperature probe which, in the presence cold liquid, will start the pump motor.
  • the detector can also be a capacitive sensor activating an oscillator emitting a frequency which will different in the presence of liquid for start-up and in the presence of air for the stop.
  • the detector can also be a piezoelectric sensor generating vibrations which will be damped in the presence of water for setting on the way. When the pump no longer delivers by the presence of air, the sensor will stop the pump. You can also use a flexible membrane which under static pressure and under the pressure of the pump in operation, will deform a membrane, which will activate a pump start switch.
  • the pump shown comprises a casing 1 sealed against the interior of which a wheel 2 is mounted rotating relative to the axis x, x ' of the pump. Below the wheel 2, the pump has a base on which it is erected having its vertical axis x, x '. 3 suction outlets open out at the lowest point of the pump.
  • Wheel 2 is driven by an electric motor 4 with electronic control plate 5. Along a side of the motor extends the delivery pipe 6. This tubing is vertical and communicates with the wheel 2.
  • the mouth 7 of the tubing of discharge to the outside is at the highest point of the pump. At one level lower than that of the mouth 7 is mounted in the tubing 6 a detector 8 fixed and static capable of detecting the presence of liquid at its level in the tubing 6. This detector 8 is connected by an on / off circuit 9 to the plate 5 for controlling the motor 4 of the pump.
  • the detector 8 detects the presence of liquid as soon as that it reaches its level and, via circuit 9 and the circuit board 5, controls the starting of the motor 4 and therefore of the pump. This one sucks the liquid through the vents 3, the wheel 2 and the tubing 6 to discharge it by mouth 7, as shown by the arrows in the drawing. As long as there is the water in the sump, this operation continues and it is only when there is more liquid than the detector 8 controls the stopping of the engine 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Keying Circuit Devices (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • External Artificial Organs (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (5)

  1. Pumpe mit einem dichten Gehäuse und Ansaugöffnungen, die an der Unterseite der Pumpe münden, gekennzeichnet durch einen statischen Messfühler (8), der auf das Vorhandensein von Flüssigkeit anspricht und in dem druckseitigen Rohrstutzen in einer Höhe unterhalb derjenigen der Mündung (7) des Rohrstutzens (6) angeordnet und zum Anzeigen des Vorhandenseins von Flüssigkeit auf seiner Höhe geeignet ist, und durch eine Schaltung (9) zum Ein- und Ausschalten des Motors der Pumpe, die durch den Messfühler gesteuert wird.
  2. Pumpe nach Anspruch 1, dadurch gekennzeichnet, dass die Öffnungen (3) am tiefsten Punkt der Pumpe münden.
  3. Pumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Messfühler (8) den Ein- und Ausschaltkreis des Motors steuert, indem er den Motor (4) anhält, wenn er keine Flüssigkeit mehr entdeckt.
  4. Pumpe nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass der Messfühler (8) ein Druckfühler, ein optischer Messfühler, ein Ultraschallerzeuger, eine Temperatursonde, ein kapazitiver Messfühler, ein piezoelektrischer Messfühler oder ein Membranfühler ist.
  5. Pumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Achse x, x' der Pumpe vertikal ist.
EP97402458A 1996-11-19 1997-10-17 Pumpe mit fester Einschaltvorrichtung Expired - Lifetime EP0843100B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9614087A FR2756020B1 (fr) 1996-11-19 1996-11-19 Pompe a dispositif fixe de mise en marche
FR9614087 1996-11-19

Publications (2)

Publication Number Publication Date
EP0843100A1 EP0843100A1 (de) 1998-05-20
EP0843100B1 true EP0843100B1 (de) 2003-02-26

Family

ID=9497763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97402458A Expired - Lifetime EP0843100B1 (de) 1996-11-19 1997-10-17 Pumpe mit fester Einschaltvorrichtung

Country Status (6)

Country Link
EP (1) EP0843100B1 (de)
AT (1) ATE233372T1 (de)
DE (1) DE69719288T2 (de)
DK (1) DK0843100T3 (de)
ES (1) ES2188880T3 (de)
FR (1) FR2756020B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2807116B1 (fr) 2000-03-31 2002-06-28 Pompes Salmson Sa Pompe de relevage a detection de niveau capacitive
DE10039117C2 (de) * 2000-08-07 2003-04-30 Comet Pumpen Systemtechnik Gmb Tauchpumpenanordnung
EP2848814B1 (de) 2013-09-12 2018-02-28 Grundfos Holding A/S Vorrichtung zur Trockenlauferkennung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635546A (en) * 1949-01-05 1953-04-21 Harold F Enyeart Pump control
US4396353A (en) * 1981-04-13 1983-08-02 Flint & Walling, Inc. Submersible sump pump
FR2531148B1 (fr) * 1982-07-30 1987-04-24 Guillemot Gilbert Dispositif de commande pour pompe de refoulement
US4645426A (en) * 1985-04-24 1987-02-24 Hartley E Dale Bilge pump
DE3710318A1 (de) * 1987-03-28 1988-10-06 Klein Schanzlin & Becker Ag Einrichtung zum niveauabhaengigen ein- und ausschalten einer kreiselpumpe
US4881873A (en) * 1988-12-14 1989-11-21 Altus Technology Corporation Capacitance level sensor for a bilge pump
EP0505009A1 (de) * 1991-03-19 1992-09-23 Bronte Whirlpools Limited Pumpenschutzsystem
US5151016A (en) * 1991-12-05 1992-09-29 Her Tser W Liquid pump responsive to temperature
DE4244417A1 (de) * 1992-12-30 1994-07-07 Wilo Gmbh Vorrichtung zum Ein- und Ausschalten einer Tauchmotorpumpe

Also Published As

Publication number Publication date
DE69719288D1 (de) 2003-04-03
EP0843100A1 (de) 1998-05-20
FR2756020A1 (fr) 1998-05-22
ATE233372T1 (de) 2003-03-15
ES2188880T3 (es) 2003-07-01
DE69719288T2 (de) 2003-09-18
FR2756020B1 (fr) 1999-01-08
DK0843100T3 (da) 2003-04-14

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