EP2486264B1 - Pompe à main destinée à pomper des liquides et système de filtre pour liquides doté d'une pompe à main - Google Patents

Pompe à main destinée à pomper des liquides et système de filtre pour liquides doté d'une pompe à main Download PDF

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Publication number
EP2486264B1
EP2486264B1 EP10750094.4A EP10750094A EP2486264B1 EP 2486264 B1 EP2486264 B1 EP 2486264B1 EP 10750094 A EP10750094 A EP 10750094A EP 2486264 B1 EP2486264 B1 EP 2486264B1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
hand pump
pump
hand
support cap
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.)
Active
Application number
EP10750094.4A
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German (de)
English (en)
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EP2486264A1 (fr
Inventor
Christian Thalmann
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.)
Mann and Hummel GmbH
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Mann and Hummel GmbH
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Filing date
Publication date
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Publication of EP2486264A1 publication Critical patent/EP2486264A1/fr
Application granted granted Critical
Publication of EP2486264B1 publication Critical patent/EP2486264B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/16—Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/023—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms double acting plate-like flexible member
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/14—Machines, pumps, or pumping installations having flexible working members having peristaltic action having plate-like flexible members
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • the invention relates to a hand pump according to claim 1.
  • the invention further relates to a filter system for liquids according to claim 10.
  • Fuel supply systems for internal combustion engines are often provided with generic hand pumps, which serve to facilitate the re-start when empty tank or after replacing a fuel filter.
  • Such hand pumps are often structurally associated with a filter head for connection of the fuel filter.
  • a generic hand pump is from the US 5,362,392 A1 known.
  • a hand pump for delivering fuel in a fuel delivery system wherein the hand pump is structurally associated with a fuel filter.
  • a housing lower part of the fuel pump is formed on a connection head for the fuel filter.
  • a lid is attached by means of a retaining ring.
  • the peripheral wall of a membrane is clamped in a holding region, which extends substantially along the inside of the lid.
  • a radially inner region of the membrane is clamped in an attachment area between the lower plate of a knob and a support plate.
  • To pump the knob is pressed against a spring preload and thus reduces the volume of a pump chamber.
  • the attachment area always remains on one side of the holding area, so that the lifting height is correspondingly limited and a large part of the possible stroke volume remains unused.
  • the invention has the object of providing a hand pump and a filter system with a hand pump of the type mentioned in such a way that the largest possible displacement is realized with the smallest possible space.
  • This object is achieved in that the holding region of the pump housing is considered axially to Hubachse between the position of the mounting portion in the rest position and the position of the mounting portion in the operating position.
  • the actuating body is moved beyond the retaining area during a stroke with the fastening area.
  • the freedom of movement of the membrane is optimally utilized and thus maximizing the achievable with a given space displacement.
  • the lifting height is greater than the smallest possible distance between the holding portion and the mounting portion, the gap between a radially inner peripheral side of the pump housing and a radially outer peripheral side of the actuating body is minimized.
  • the width of the gap is less than 5 mm.
  • the membrane is optimally supported by the mounting area with the largest possible diameter against changing pressure loads, which has a positive effect on the stroke volume.
  • the holding region of the pump housing may be located centrally between the position of the fastening region in the rest position and the position of the fastening region in the actuating position of the actuating body. In this way, the axial deflection of the actuating body on both sides of the holding area is the same, so that the lifting height can be maximized and the available space is optimally utilized.
  • the ring portion of the membrane may be curved and everted, in particular the membrane may be a rolling membrane. So It is possible that the ring section can be everted with little effort in the gap between the mounting portion in the holding area when passing the holding portion. A rolling membrane can easily be everted even with minimal gap widths.
  • the membrane may advantageously be made of an elastomer.
  • Elastomers are flexible, robust and can easily be designed into complex shapes.
  • the membrane may have a circumferential sealing bead which is clamped between a cover and a housing lower part of the pump housing. In this way, a good seal between the membrane and the pump housing is achieved, so that the escape of liquid is excluded from the holding area.
  • the actuating body may comprise an outer cap, on or in which a support cap is arranged, and the membrane may be clamped between the outer cap and the support cap.
  • the membrane can be clamped flat and stable between the outer cap and the support cap in the region of its center. A separate seal in the mounting area is not required. But there is also the possibility that the membrane is designed as a ring element and only a radially inner region of the ring member between the knob and the support cap is tightly clamped.
  • the membrane is optimized in terms of material usage.
  • the actuating body may have a knob and the membrane may be molded onto the knob and designed as a ring element.
  • a ring element is optimized with respect to the material used.
  • the hand pump according to the invention is thus made of fewer parts and is easier to assemble.
  • the hand pump can be integrated in a filter system for liquids, in particular a filter head.
  • a filter system for liquids, in particular a filter head.
  • the hand pump according to the invention with an optimal ratio between the stroke volume and space has a particularly favorable.
  • the technical object is further achieved according to the invention in that, in the case of the hand pump of the filter system, the holding region of the pump housing, viewed axially relative to the lifting axis, lies between the position of the fastening region in the rest position and the position of the fastening region in the actuating position.
  • FIG. 1 a section of a fuel filter system 10 of an internal combustion engine of a motor vehicle is shown.
  • the fuel filter system 10 comprises a filter head 12 to which a replaceable filter 14 of no further interest is mounted.
  • a hand pump 16 is integrated in the filter head 12.
  • the hand pump 16 is used for manual suction of the fuel from a tank, for example, after replacement of the replaceable filter 14 or before a restart of the internal combustion engine at leer fretem tank.
  • an intake pipe 18 of the hand pump 16 is arranged in the filter head 12.
  • the suction pipe 18 is in the section in the FIG. 3 visible, noticeable.
  • the suction line 18 is connected to a fuel supply line, not shown in the figures, which comes from the tank, and opens into a pump chamber 20 of a pump housing 22 of the hand pump 16.
  • an inlet check valve 24 is arranged, which for sucking fuel into the pump chamber 20 opens.
  • pressure line 26 of the hand pump 16 connects the pump chamber 20 with an inlet 28 of the interchangeable filter 14.
  • an outlet check valve 30 is arranged, which opens for pumping fuel from the pumping chamber 20 into the replaceable filter 14.
  • knob 32 is mounted axially movable to a stroke axis 34.
  • the knob 32 consists of an outer cap 36 and a support cap 38.
  • the outer cap 36 is a total of approximately cup-shaped. At the free end face of the outer cap 36, a radial flange 40 is integrally formed.
  • the support cap 38 is also approximately cup-shaped. It has at its free end face on a radial counter flange 42, the radially outer edge is bent at right angles from the bottom 44 of the support cap 38 away.
  • the support cap 38 is inserted in the outer cap 36, wherein an approximately cup-shaped, graduated in its peripheral side membrane 46 made of rubber between the support cap 38 and the outer cap 36 is clamped.
  • a domed ring portion 48 of the diaphragm 46 surrounds a mounting portion 50 of the knob 32 for the diaphragm 46 between the flange 40 and the mating flange 42.
  • the annular portion 48 has at the radially outer edge of the membrane 46 has a circumferential sealing bead 52.
  • the sealing bead 52 is clamped in a holding region 54 between a cover 56 and an upper edge of a housing lower part 58 of the pump housing 22 and at the same time assumes a sealing function.
  • the pump housing 22 is sealingly closed by beading the lid 56 at the edge.
  • the provided with the membrane 46 knob 32 protrudes through an opening 60 in the lid 56 to the outside, wherein the radial flange 40 rests inside the lid 56.
  • the ring portion 48 of the membrane 46 extends from the holding portion 54 to the mounting portion 50 and lies in the in FIGS. 1 and 3 shown rest position I of the knob 32 on the lid 56 at.
  • a cylinder portion 62 extends, which is arranged concentrically to the lifting axis 34.
  • the axial extent of the cylinder portion 62 corresponds approximately to the axial extent of the support cap 38.
  • the lower housing part 58 comprises a cylindrical wall portion 64, at the lower end of a bottom 66 is inserted.
  • the bottom 66, the cylindrical wall portion 64, the diaphragm 46 and the knob 32 define the pump chamber 20, the volume of which by pressing the Knobs 32 and corresponding movement of the diaphragm 46 is variable.
  • the guide elements 68 and the cylinder section 62 are surrounded by a helical compression spring 72.
  • the compression coil spring 72 is supported on the one hand on the inside of the bottom 66 of the lower housing part 58 and on the other hand on the inside of the bottom 44 of the support cap 38.
  • the knob 32 with the diaphragm 46 against the force of the compression coil spring 72 from the rest position I in an operating position II, in the FIG. 2 is shown pressed into the pump chamber 20.
  • FIG. 1 is the position of the mounting portion 50 in the rest position I indicated by a dashed line 73 and in the operating position II with a dashed line 75.
  • the holding portion 54 of the pump housing 22 is located axially to the stroke axis 34 viewed centrally between the position 73 of the mounting portion 50 in the rest position I and the position 75 of the mounting portion 50 in the operating position II of the knob 32. In this way, the flexibility of the diaphragm 46 is fully utilized and a maximum lifting height, which in the FIG.
  • the lifting height 77 of the knob 32 is greater than the smallest possible distance between the holding portion 54 and the mounting portion 50 at a stroke FIG. 1 with the double arrow 74 indicated width of the remaining between the holding portion 54 and the mounting portion 50 gap 74 is preferably less than 5 mm.
  • the ring section 48 of the diaphragm 46 configured as a rolling diaphragm is everted by means of a rolling change in shape.
  • the volume of the pump chamber 20 decreases and the pressure in the pump chamber 20 increases. This pressure increase causes the exit check valve 30 to open, pumping fuel from the pump chamber 20 through the pressure line 26.
  • the helical compression spring 72 pushes the knob 32 out of the pump chamber 20 until the radial flange 40 rests against the cover 56. In this case, the ring portion 48 of the membrane 46 is everted into its original shape.
  • the volume of the pump chamber 20 increases and it creates a negative pressure. The negative pressure causes opening of the inlet check valve 24, so that fuel flows through the suction line 18 into the pumping chamber 20.
  • the fuel filter system 10, in particular the manual pump 16 is not limited to use in internal combustion engines in the automotive sector. Rather, it can also be used in other types of internal combustion engines, such as industrial engines. However, the fuel filter system 10 and the hand pump 16 can also be used in other technical fields, for example in water technology for filtering or for sucking water.
  • the hand pump 16 can also be designed as a separate functional component.
  • the hand pump 16 may also be disposed elsewhere in the fuel filter system 10.
  • the holding region 54 of the pump housing 22 may also lie closer to one of the positions 73 or 75 instead of centrally between the respective position 73 or 75 of the fastening region 50 in the rest position I and the actuating position II.
  • the membrane 46 may be made of a different type of flexible material, in particular a different type of elastomer instead of rubber.
  • the support cap 38 may be plugged into the outer cap 36 and plugged onto this.
  • the membrane 46 may also be injection-molded onto a corresponding pommel and designed as a ring element.
  • knob 32 instead of the knob 32 with outer cap 36 and support cap 38 and a different kind particular one-piece knob can be provided.
  • helical compression spring 72 may also be provided a different type of spring or a different kind of elastic element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (9)

  1. Pompe manuelle (16) servant à pomper des liquides, notamment du carburant, notamment d'un véhicule automobile, avec un boîtier de pompe (22) présentant une entrée (18) et une sortie (26) pour le liquide et avec un corps actionneur (32) logé de façon mobile à l'intérieur en sens axial par rapport à un axe de course (34), ainsi qu'avec une membrane (46) avec une section annulaire (48) flexible entourant l'axe de course (34), laquelle est fixée en sens radial, à l'intérieur, dans une zone de fixation (50) du corps actionneur (32) et en sens radial, à l'extérieur, dans une zone de maintien (54) du boîtier de pompe (22), le corps actionneur (32) étant enfoncé avec la membrane (46) dans le boîtier de pompe (22), dans un mouvement de course, contre la force d'un élément élastique (42) pour passer d'une position de repos (I) à une position d'actionnement (II) et étant de nouveau extrait au moyen de l'élément élastique (72) pour revenir en position de repos (I), le volume d'une chambre de pompe (20) pouvant ainsi être modifié, une hauteur de course (77) du corps actionneur (32) étant supérieure à une distance minimale radiale (74) d'une course entre la zone de maintien (54) et la zone de fixation (50), la zone de maintien (54) du boîtier de pompe (22) s'étendant, considéré en sens axial par rapport à l'axe de course (34), entre la position (73) de la zone de fixation (50) en position de repos (I) et la position (75) de la zone de fixation (50) en position d'actionnement (II), le corps actionneur (32) étant exécuté en tant que poignée avec un capuchon externe (36) et un capuchon d'appui (38), la membrane (46) étant coincée entre le capuchon externe (36) et le capuchon d'appui (38) enfiché dans ce capuchon externe, et le capuchon d'appui (38) étant doté d'un fond (44) avec une face intérieure à partir de laquelle s'étend une section cylindrique (62), caractérisée en ce que le boîtier de pompe (22) comprend une partie inférieure de boîtier (58) avec un fond (66), et que deux éléments de guidage (68) se trouvent sur le fond (66), orientés de façon concentrique par rapport à une section cylindrique (62) du capuchon d'appui (38), délimitent un espace intérieur cylindrique dans lequel est située la section cylindrique (62), et qui sont séparés l'un de l'autre, sur toute leur étendue en direction de l'axe de course (34), par des fentes de passage (70) et conçus de telle manière que du carburant provenant de la zone de la chambre de pompe (20) entourant les éléments de guidage (68) puisse pénétrer, à travers les fentes de passage (70), dans l'espace intérieur.
  2. Pompe manuelle selon la revendication 1, les éléments de guidage (68) et la section cylindrique (62) étant entourés d'un ressort de pression en spirale (72) qui s'appuie d'une part sur la face intérieure du fond (66) de la partie inférieure du boîtier (58) et d'autre part sur la face intérieure du fond (44) du capuchon d'appui (38).
  3. Pompe manuelle selon la revendication 1 ou 2, caractérisée en ce que la zone de maintien (54) du boîtier de pompe (22) est centrée entre la position (73) de la zone de fixation (50) en position de repos (I) et la position (75) de la zone de fixation (50) en position d'actionnement (II) du corps actionneur (32).
  4. Pompe manuelle selon l'une des revendications précédentes, caractérisée en ce que la section annulaire (48) de la membrane (46) est bombée et réversible, et en particulier que la membrane (46) est une membrane déroulante.
  5. Pompe manuelle selon l'une des revendications précédentes, caractérisée en ce que la membrane (46) est constituée d'un élastomère.
  6. Pompe manuelle selon l'une des revendications précédentes, caractérisée en ce que la membrane (46) comporte un bourrelet d'étanchéité (52) circulaire qui est coincé entre un couvercle (56) et une partie inférieure de boîtier (58) du boîtier de pompe (22).
  7. Pompe manuelle selon l'une des revendications précédentes, caractérisée en ce que le corps actionneur (32) présente un capuchon externe (36), sur ou dans lequel est disposé un capuchon d'appui (38) et que la membrane (46) est coincée entre le capuchon externe (36) et le capuchon d'appui (38).
  8. Pompe manuelle selon l'une des revendications précédentes, caractérisé en ce qu'elle est intégrée dans un système de filtre (10) pour liquides, notamment dans une tête de filtre (12).
  9. Système de filtre (10) pour liquides, notamment pour carburant, notamment d'un véhicule automobile, avec une pompe manuelle (16) servant à pomper les liquides, selon l'une des revendications précédentes.
EP10750094.4A 2009-10-05 2010-08-26 Pompe à main destinée à pomper des liquides et système de filtre pour liquides doté d'une pompe à main Active EP2486264B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009048211A DE102009048211A1 (de) 2009-10-05 2009-10-05 Handpumpe zum Pumpen von Flüssigkeiten und Filtersystem für Flüssigkeiten mit einer Handpumpe
PCT/EP2010/062479 WO2011042252A1 (fr) 2009-10-05 2010-08-26 Pompe à main destinée à pomper des liquides et système de filtre pour liquides doté d'une pompe à main

Publications (2)

Publication Number Publication Date
EP2486264A1 EP2486264A1 (fr) 2012-08-15
EP2486264B1 true EP2486264B1 (fr) 2014-12-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10750094.4A Active EP2486264B1 (fr) 2009-10-05 2010-08-26 Pompe à main destinée à pomper des liquides et système de filtre pour liquides doté d'une pompe à main

Country Status (6)

Country Link
US (1) US9033682B2 (fr)
EP (1) EP2486264B1 (fr)
KR (1) KR20120079471A (fr)
CN (1) CN102575625B (fr)
DE (1) DE102009048211A1 (fr)
WO (1) WO2011042252A1 (fr)

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GB2491654B (en) * 2011-06-27 2014-10-15 Perkins Engines Co Ltd A fuel pumping and filter connection device
DE102011083787A1 (de) * 2011-09-29 2013-04-04 Hengst Gmbh & Co. Kg Kraftstoffpumpanordnung
DE102015016484A1 (de) * 2015-12-15 2017-06-22 Andreas Stihl Ag & Co. Kg Manuell zu betätigende Förderpumpe und Kraftstoffsystem mit einer Förderpumpe
CN105736203A (zh) * 2016-04-18 2016-07-06 临海市江南内燃机附件厂 一种油水分离的燃油滤清器总成
US10465642B2 (en) 2017-03-27 2019-11-05 Kohler Co. Carburetor drain
CN108049933B (zh) * 2017-11-17 2020-11-24 宁波迪尔威动力机械有限公司 一种机油滤清器的滤清座
CN107905929A (zh) * 2017-12-31 2018-04-13 无锡威孚高科技集团股份有限公司 一种可换滤芯的燃油滤清器
US11008978B2 (en) * 2019-03-05 2021-05-18 Kohler Co. Bail driven stale fuel evacuation
US10677256B1 (en) 2019-08-07 2020-06-09 Dart Industries Inc. Connecting assembly for fluid dispensing pump

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JP4399697B2 (ja) 2001-02-28 2010-01-20 株式会社デンソー 燃料供給装置および燃料濾過装置
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Also Published As

Publication number Publication date
KR20120079471A (ko) 2012-07-12
CN102575625A (zh) 2012-07-11
DE102009048211A1 (de) 2011-04-14
US20120219441A1 (en) 2012-08-30
US9033682B2 (en) 2015-05-19
CN102575625B (zh) 2014-12-17
EP2486264A1 (fr) 2012-08-15
WO2011042252A1 (fr) 2011-04-14

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