EP2609336B1 - Pompe immergée - Google Patents

Pompe immergée Download PDF

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Publication number
EP2609336B1
EP2609336B1 EP10745286.4A EP10745286A EP2609336B1 EP 2609336 B1 EP2609336 B1 EP 2609336B1 EP 10745286 A EP10745286 A EP 10745286A EP 2609336 B1 EP2609336 B1 EP 2609336B1
Authority
EP
European Patent Office
Prior art keywords
submersible pump
circuit board
printed circuit
pressure switch
valve
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.)
Not-in-force
Application number
EP10745286.4A
Other languages
German (de)
English (en)
Other versions
EP2609336A1 (fr
Inventor
Ram Krishna Agrawal
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.)
Husqvarna AB
Original Assignee
Husqvarna AB
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 Husqvarna AB filed Critical Husqvarna AB
Publication of EP2609336A1 publication Critical patent/EP2609336A1/fr
Application granted granted Critical
Publication of EP2609336B1 publication Critical patent/EP2609336B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04D13/0686—Mechanical details of the pump control unit
    • 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the present invention relates to a submersible pump.
  • the present invention relates to a submersible pump powered by an electric motor as defined in the preamble of claim 1.
  • Submersible pumps are well known in the art. Submersible pumps are utilized in a variety of applications, such as, but not limited to, irrigation, aquariums, drainage, sewage, oil and water wells, residential supply, or the like. Typically, such pumps include a non-return valve and a pressure switch.
  • the non-return valve ensures a unidirectional flow of a working fluid from an inlet to the outlet.
  • the pressure switch shuts down the pump in case a pressure of the working fluid exceeds a predetermined threshold.
  • the non-return valve and the pressure switch are arranged as completely separate units in separate housings. Such an arrangement may not be compact and reduce portability of the pump.
  • at least some components of the non-return valve and the pressure switch are common.
  • DE Pat. No. 3,344,765 A1 published on May 13, 1985 and assigned to VDO SCHINDLING, titled "Submerged pump” discloses a submersible pump with a plastic part that performs multiple functions.
  • the plastic part acts as a sealing member, a pressure diaphragm and a valve flap of a non-return valve.
  • the pressure diaphragm is coupled to a pressure switch whereas the valve flap is provided in a passage for the working fluid.
  • the pressure switch and the non-return valve becomes simultaneously non-functional. This may cause serious damage to various components of the pump including, but not limited to, the motor. Further, leakage of the working fluid may also be detrimental to various components.
  • US Pat. 2005/0095150 A1 published on May 5, 2005 discloses a centrifugal multistage pump having a motor, a first circuit board inverter and a pressure transducer.
  • the arrangement of the first circuit board inverter and the pressure transducer within the pump body may not be compact.
  • the objective is to provide an improved submersible pump, with a compact and robust design.
  • the objective is at least partially achieved according to a novel submersible pump described in claim 1.
  • the submersible pump powered by an electric motor includes at least one inlet, at least one outlet, and at least one passage between the inlet and the outlet.
  • a non-return valve is provided in the passage to ensure a unidirectional flow of a working fluid from the inlet to the outlet.
  • a pressure switch is provided to monitor a pressure within the passage.
  • a printed circuit board (PCB) assembly is provided, the PCB assembly including a PCB housing and a PCB. The non-return valve, the pressure switch and the PCB assembly are arranged such that an overlap is provided between at least two of the non-return valve, the pressure switch, and the PCB assembly in a horizontal plane.
  • Such an arrangement of the non-return valve, the pressure switch and the PCB assembly results in a compact configuration of the pump. This may improve portability, installation and storage of the pump. Further, a compact configuration may lead to lower material and manufacturing costs. The pump may also become more efficient with lower leakage and/or energy losses.
  • pressure switch may be located substantially below the PCB assembly in a vertical direction.
  • the non-return valve includes a valve body, a valve guide supporting the valve body, and a first spring, the first spring normally biasing the valve body in a closed position.
  • the submersible pump includes a flow sensor to detect a flow of a working fluid.
  • the flow sensor includes a magnet, and at least one hall sensor which outputs a first electric signal.
  • the hall sensor is provided on the PCB.
  • the magnet is configured to move with the valve body.
  • the pressure switch includes a second spring, a membrane havinng a first surface and a second surface, a piston normally biased against the first surface of the membrane with a predetermined force by the second spring, and an adjusting screw which regulates the predetermined force.
  • an opening is provided to transmit a pressure within the passage to the second surface of the membrane.
  • at least one electromechanical transducer detects a movement of the membrane, the electromechanical transducer outputting a second electric signal.
  • the PCB includes a logic circuit which at least accepts the first electric signal and the second electric signal, and generates an output signal to control the motor.
  • FIG. 1 illustrates a sectional view of a submersible pump 100, according to an embodiment of the present invention.
  • the submersible pump 100 (hereinafter referred to as the "pump 100 ”) may be used to pump any working fluid, for example, water, oil, sewage, slurry, or the like.
  • the pump 100 may be used in various applications, such as, irrigation, aquariums, oil or water wells, drainage, sewage, residential supply etc.
  • any suitable size, shape or type of elements or materials could be used.
  • the terms “horizontal direction” and “vertical direction” indicate a direction relative to the pump 100.
  • the terms “horizontal plane” and “vertical plane” are planes parallel to the horizontal direction and the vertical direction respectively.
  • the terms “left” and “right” of any component or portion may in general refer to left and right sides of the component or portion in the horizontal direction.
  • the terms “above” and “below” of any component or portion may in general refer to sides above and below of the component or portion in the vertical direction. It may be apparent to a person ordinarily skilled in the art that the terms “left”, “right”, “above” and “below” are with respect to a particular orientation of the pump 100, and changes when viewed from other orientations.
  • the term “electric signal”, unless otherwise mentioned, may refer to any analogue or digital signal.
  • any extent of overlap, between two or more components of the pump 100, expressed as a percentage may be calculated based on a distance between the components with the overlap and a distance between the components without any overlap.
  • the distance between the components may be a distance between central points, perpendicular distance, or the like.
  • the pump 100 includes an inlet 102 and an outlet 104 with a passage 106 connecting the inlet 102 and the outlet 104.
  • the pump 100 may include two or more inlets, outlets, and/or passages without departing from the essence of the present invention.
  • the passage 106 may have multiple branches to connect the two or more inlets and/or outlets.
  • the inlet 102 and/or outlet 104 may also have connecting portions (not shown) (For example, threads) to connect with any external pipes or supply.
  • the pump 100 includes a main housing 108 which encloses at least some components of the pump 100.
  • the pump 100 may be of a modular construction with two or more housings attached to each other.
  • a cover 109 is provided to cover an upper portion if the main housing 108.
  • the pump 100 also includes an adapter 110 attached to the main housing 108 for connecting an electric motor (hereinafter referred to as “the motor”) and impeller assembly (not shown) to the pump 100.
  • a power cable (not shown) is provided to provide electrical energy to the motor.
  • the motor is controlled by a printed circuit board (hereinafter referred to as "the PCB") (shown in FIG. 2 ). The motor drives the impeller to pump the working fluid through the inlet 102 into the passage 106.
  • the pump 100 includes a non-return valve 112 provided in the passage 106 to divide the passage 106 into a first portion 114 and a second portion 116.
  • the non-return valve 112 includes a valve body 118, a first spring 120 and a valve guide 122.
  • the valve body 118 includes a valve cone 124 and a valve stem 126.
  • One end of the first spring 120 rests against the valve cone 124 of the valve body 118, whereas the other end of the first spring 120 rests against the valve guide 122.
  • the valve guide 122 restricts a movement of the valve stem 126 substantially parallel to the vertical direction V.
  • the first spring 120 normally biases the valve cone 124 with a first O-ring 127 against a conical surface of the main housing 108 to retain the non-return valve 112 in a closed position.
  • a flow of the working fluid to and/or from the second portion 116 to the first portion 114 of the passage 106 is substantially precluded.
  • a lip seal 125 is also provided to limit the flow of the working fluid by allowing the working fluid to flow through a small groove passage in the main housing 108 in a lower flow rate range.
  • the non-return valve 112 permits a unidirectional flow of the working fluid from the first portion 114 to the second portion 116 only when a pressure of the working fluid overcomes a spring force of the first spring 120, and lifts the valve cone 124 with the first O-ring 127 from a closed position.
  • the spring force of the first spring 120 may be predetermined to permit a flow of the working fluid only above a threshold pressure.
  • the non-return valve 112 prevents a backflow of the working fluid from the second portion 116 to the first portion 114. This may prevent any damage to various components of the pump 100, such as, the motor, the impeller, or the like.
  • non-return valve 112 illustrated in FIG. 1 may be of any other shape or configuration within the scope of the present invention.
  • first spring 120 any other resilient member may be used.
  • alternate sealing means (For example, a labyrinth seal) may be utilized in place of the lip seal 125 and the first O-ring 127.
  • a magnet shown in FIGS. 2 and 3
  • a hall sensor is provided on the PCB to output a first electric signal (hereinafter referred to as "the first signal) in response to a movement of the magnet (described in detail in conjunction with FIG. 2 ).
  • the pump 100 includes a pressure switch 128 to monitor a pressure of the working fluid in the passage 106.
  • the pressure switch 128 includes a membrane 130, a second spring 132, a piston 134 and an adjusting screw 136.
  • the second spring 132 normally biases the piston 134 against a first surface 138 of the membrane 130 with a predetermined force.
  • the adjusting screw 136 regulates the predetermined force with which the piston 134 is biased against the first surface 138 of the membrane 130.
  • the membrane 130, the second spring 132, the piston 134 and the adjusting screw 136 are substantially enclosed within a pressure switch cover 140.
  • the pressure switch cover 140 may include an aperture (not shown) to enable a tool to be inserted inside the pressure switch cover 140 for adjustment of the adjusting screw 136.
  • a pressure switch connector 142 is provided to connect the pressure switch 128 to the pump 100.
  • the pressure switch connector 142 may be a separate component or integral with the pressure switch 128.
  • a second O-ring 144 is provided to substantially prevent leakage into or out of the pressure switch connector 142.
  • the pressure switch connector 142 includes an opening 146 to connect the second portion 116 of the passage 106 with a space 148 above a second surface 150 of the membrane 130. However, the opening 146 may connect any other portion of the passage 106 with the space 148 within the scope of the present invention.
  • the piston 134 exerts the predetermined force on the first surface 138 of the membrane 130, whereas a pressure of the working fluid in the second portion 116 of the passage 106 is transmitted to the second surface 150 of the membrane 130.
  • a pressure on the second surface 150 exceeds the predetermined force on the first surface 138, the membrane 130 is displaced downwards from a normal position.
  • an electromechanical transducer (not shown) is provided to output a second electric signal (hereinafter referred to as (“the second signal").
  • the electromechanical transducer may be part of the pressure switch 128 or a separate component.
  • the electromechanical transducer is electrically connected to the PCB such that the first signal is transmitted to the PCB.
  • the electromechanical transducer may be a micro switch, a relay, a piezoelectric transducer, proximity sensor, or a combination of any of these.
  • the PCB includes a logic circuit (not shown) which controls operation of the pump based at least on the first and second signals (explained in detail in subsequent paragraphs).
  • the pressure switch may be of any other shape or configuration if without departing from the scope of the present invention as claimed.
  • the second spring 132 may be replaced by any other resilient member.
  • the predetermined force on the membrane 130 may be adjusted by other means (For example, electromechanical, hydraulic) instead of the adjusting screw 136.
  • FIG. 2 illustrates a top view of the pump 100 along a horizontal plane A-A.
  • the pump 100 includes the non-return valve 112, the pressure switch 128 and a PCB assembly 202.
  • the non-return valve 112 and the pressure switch connector 142 are arranged in a secondary housing 204. Consequently, an overlap exists between the non-return valve 112 and the pressure switch 128.
  • the extent of overlap between the non-return valve 112 and the pressure switch 128 lies between a range of about 5% to 25%.
  • the extent of the overlap is such that a distance D1 between central points 206 and 208 of the non-return valve 112 and the pressure switch 128 respectively lies substantially between a range of about 25 mm to 40 mm.
  • the overlap between non-return valve 112 and the pressure switch connector 142 lies substantially between a range of about 5% to 15%.
  • the extent of overlap is such that a distance D2 between the central point 206 of the non-return valve 112 and a central point 210 of the pressure switch connector 142 lies substantially between a range of about 20 mm to 30 mm.
  • the secondary housing 204 may be integral with the main housing 108 or may be a separate component which is attached to the main housing 108.
  • the PCB assembly 202 includes a PCB housing 212 and the PCB 214.
  • the PCB housing 212 may retain the PCB 214 in a fixed position and/or safeguard the PCB 214 and various electric components of the PCB 214 from any leakage, external particulate matter, vibrations, extreme temperatures and humidity, or the like.
  • the PCB housing 212 is arranged between a curvilinear portion 216 of the secondary housing 204, and the main housing 108 in the horizontal direction such that an overlap exits between the PCB assembly 202 and the pressure switch 128.
  • the extent of overlap between the pressure switch 128 and the PCB 214 lies substantially between a range of about 10% to 20%.
  • the extent of the overlap is such that a perpendicular distance D3 between the central point 208 of the pressure switch 128 and the PCB 214 lies substantially between a range of about 20 mm to 30 mm.
  • the curvilinear portion 216 of the secondary housing 204 results in an overlap between the non-return valve 112 and the PCB 214.
  • the extent of overlap between the non-return valve 112 and the PCB 214 lies between a range of about 5% and 15%. Consequently, the curvilinear portion 216 of the secondary housing 204 reduces a perpendicular distance D4 between the central point 206 of the non-return valve 112 and the PCB 214.
  • the distance D4 lies substantially between a range of about 20 mm to 30 mm.
  • the overlap percentages and the distances mentioned above are purely exemplary in nature, and the present invention may be envisioned with any other overlap percentages and distances.
  • the distances D1-D4 may proportionately change with a change in a scale of the pump 100.
  • the arrangement of the non-return valve 112, the pressure switch 128 and the PCB assembly 202 results in a compact configuration of the pump 100. This may improve portability, installation and storage of the pump 100. Further, a compact configuration may also lead to lower material and manufacturing costs. Additionally, the pump 100 may become more efficient with lower leakage and/or energy losses. Further, the arrangement is illustrated in the horizontal plane A-A, but it may be obvious that overlap exists in all horizontal planes between a range in the vertical direction V. The arrangement of the non-return valve 112, the pressure switch 128 and the PCB assembly 202 as illustrated in FIG. 2 are for illustrative purposes and any other arrangement with overlaps may be within the scope of the present invention.
  • a first overlap may be provided between the non-return valve 112 and the PCB assembly 202 in a horizontal plane, whereas a second overlap is provided between the non-return valve 112 and the pressure switch 128 in a second horizontal plane.
  • the pressure switch 128 may be located substantially below the PCB assembly 202 in the vertical direction V.
  • a magnet 218 is configured to move with the valve body 118 (described in conjunction with FIG. 3 ).
  • the magnet 218 may be a permanent magnet or an electromagnet without deviating from the essence of the present invention.
  • the PCB 214 includes the hall sensor 220 which outputs the first signal.
  • the magnet 218 and the hall sensor 220 may together form at least part of a flow sensor.
  • the PCB 214 includes a logic circuit (not shown) which is configured to receive the first signal from the hall sensor 220.
  • the logic circuit further receives the second signal from the electromechanical transducer which detects a movement of the membrane 130 of the pressure switch 128.
  • the logic circuit generates an output signal to control the motor of the pump 100. Additionally, the logic circuit may also monitor a current state of the motor in order to generate the output signal. The logic circuit may also control any other electric component of the pump 100 within the scope of the present invention.
  • the logic circuit may include a microprocessor, a microcontroller, one or more relays, one or more multi-vibrators, or a combination of any of these. Further, the first signal and/or the second signal may be processed in any manner, such as, amplified, modified from an analogue state to a digital state, filtered, or the like, before being transmitted to the logic circuit.
  • the non-return valve 112 moves upwards due to the flow of the working fluid and the magnet 218 triggers the first signal as soon as the magnetic field of the magnet 218 comes in contact with the hall sensor 220 mounted on the PCB 214.
  • the first signal remains active as long as the flow exists and the non-return valve 112 is in such a position that the hall sensor 220 is in the magnetic filed of the magnet 218. This means that the first signal is active starting from a minimum flow rate of, for example 10 liters/ h, up to a maximum flow rate of the pump when the non-return valve 112 is fully open.
  • the pressure may depend at least partly on the flow rate of the working fluid.
  • the value of the pressure may depend on the pump performance curve wherein the pressure is inversely proportional to the flow rate.
  • the electromechanical transducer is a micro switch.
  • the micro switch is activated when the membrane 130 is displaced downwards from a normal position, due to the pressure of the working fluid reaching a maximum pressure.
  • Both the first signal from the hall sensor 220 and the second signal from the micro switch are processed by the logic circuit and the motor is switched on or off accordingly.
  • the first signal and the second signal may be of a fixed type (Yes/No) or the variable type. In case of the variable type, the values of the first signal and the second signal may be shown on a display, for example, a LCD.
  • the motor is controlled according to a control strategy as depicted in the following table: First signal Second signal Motor No Yes Off Yes No On Yes Yes On No No On (Dry-run: Off)
  • the logic circuit switches off the motor or does not activate the motor.
  • the motor is switched on or kept running to build up preasure.
  • both the first and second signals are in the Yes state, the motor is switched on or kept running. If both the first and second signals are in the No state, the pump might be in the start-up condition and thus pressure and flow has to be generated.
  • the motor of the pump 100 preferably should be switched off to avoid damages to the motor or other components of the pump 100.
  • control strategy of the motor is for descriptive purposes only, and any other control strategy may be envisioned within the scope of the present invention.
  • Fig. 3 illustrates a sectional view of the pump 100.
  • the magnet 218 of the flow sensor is located within a casing 302.
  • the casing 302 is integral with the valve body 118.
  • the casing 302 is integral with the valve cone 124.
  • the magnet 218 may be attached to the casing 302 by adhesives, welding, brazing, or the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Claims (10)

  1. Pompe immergée (100) comprenant un boîtier principal (108) et alimentée par un moteur électrique comprenant :
    au moins une entrée (102), au moins une sortie (104), et au moins un passage (106) entre l'entrée (102) et la sortie (104) ;
    un clapet anti-retour (112) placé dans le passage (106), comprenant un corps de clapet (118) qui comprend en outre un cône de clapet (124) et une tige de clapet (126) ;
    un interrupteur à pression (128) qui surveille une pression dans le passage (106) ; et
    un ensemble de carte de circuit imprimé (202) comprenant un boîtier de carte de circuit imprimé (212) et une carte de circuit imprimé (214), où la carte de circuit imprimé (214) contrôle au moins le moteur ;
    caractérisée en ce que,
    le clapet anti-retour (112) et l'interrupteur à pression (128) sont agencés dans un boîtier secondaire (204),
    et le boîtier de carte de circuit imprimé (212) est agencé entre une partie curviligne (216) du boîtier secondaire (204) et le boîtier principal (108) dans une projection sur un premier plan qui est perpendiculaire à la direction du mouvement de la tige de clapet (126), un chevauchement se trouve entre le clapet anti-retour (112), l'interrupteur à pression (128) et l'ensemble de carte à circuit imprimé (202), moyennant quoi il existe un chevauchement entre l'interrupteur à pression (128) et l'ensemble de carte à circuit imprimé (202),
    et un second chevauchement existe entre le clapet anti-retour (112) et l'ensemble de carte à circuit imprimé (202).
  2. Pompe immergée (100) selon la revendication 1, dans laquelle le clapet anti-retour (112) comprend un corps de clapet (118), un guide de clapet (122) supportant le corps de clapet (118), et un premier ressort (120), le premier ressort (120) inclinant perpendiculairement le corps de clapet (118) dans une position fermée.
  3. Pompe immergée (100) selon la revendication 1, dans laquelle la pompe immergée (100) comprend en outre un capteur de flux pour détecter le flux d'un fluide de travail.
  4. Pompe immergée (100) selon la revendication 3, dans laquelle le capteur de flux comprend un aimant (218) et au moins un capteur de Hall (220) qui délivre en sortie un premier signal électrique.
  5. Pompe immergée (100) selon la revendication 4, dans laquelle le capteur de Hall (220) est pourvu sur la carte de circuit imprimé (214).
  6. Pompe immergée (100) selon la revendication 4, dans laquelle l'aimant (218) est configuré pour se déplacer avec le corps de clapet (118).
  7. Pompe immergée (100) selon la revendication 1, dans laquelle l'interrupteur à pression (128) comprend un second ressort (132), une membrane (130) ayant une première surface (138) et une seconde surface (150), un piston (134) incliné perpendiculairement contre la première surface (138) de la membrane (130) avec une force prédéterminée par le second ressort (132), et une vis de réglage (136) qui régule la force prédéterminée.
  8. Pompe immergée (100) selon la revendication 10, dans laquelle une ouverture (146) est pourvue pour transmettre une pression dans le passage (106) à la seconde surface (150) de la membrane (130).
  9. Pompe immergée (100) selon la revendication 11, dans laquelle au moins un transducteur électromécanique détecte un mouvement de la membrane (130), et où le transducteur électromécanique délivre en sortie un second signal électrique.
  10. Pompe immergée (100) selon la revendication 9, dans laquelle la carte de circuit imprimé (214) comprend un circuit logique qui accepte au moins le premier signal électrique et le second signal électrique, et qui génère un signal de sortie pour contrôler le moteur.
EP10745286.4A 2010-08-26 2010-08-26 Pompe immergée Not-in-force EP2609336B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/062518 WO2012025154A1 (fr) 2010-08-26 2010-08-26 Pompe immergée

Publications (2)

Publication Number Publication Date
EP2609336A1 EP2609336A1 (fr) 2013-07-03
EP2609336B1 true EP2609336B1 (fr) 2016-08-17

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ID=43928936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10745286.4A Not-in-force EP2609336B1 (fr) 2010-08-26 2010-08-26 Pompe immergée

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EP (1) EP2609336B1 (fr)
WO (1) WO2012025154A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106837629B (zh) * 2017-03-20 2022-07-15 瑞安市科达汽车配件有限公司 外置式多功能冷启动电动燃油泵

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3344765A1 (de) 1983-12-10 1985-06-13 Vdo Adolf Schindling Ag, 6000 Frankfurt Tauchpumpe
US4718827A (en) * 1986-07-07 1988-01-12 General Motors Corporation Fuel pump
JP3213465B2 (ja) * 1993-11-19 2001-10-02 株式会社ミツバ 燃料供給ポンプ
US7407371B2 (en) * 2003-10-29 2008-08-05 Michele Leone Centrifugal multistage pump

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WO2012025154A1 (fr) 2012-03-01
EP2609336A1 (fr) 2013-07-03

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