EP2101059A1 - Electromagnetic pump with reciprocating piston - Google Patents
Electromagnetic pump with reciprocating piston Download PDFInfo
- Publication number
- EP2101059A1 EP2101059A1 EP09155103A EP09155103A EP2101059A1 EP 2101059 A1 EP2101059 A1 EP 2101059A1 EP 09155103 A EP09155103 A EP 09155103A EP 09155103 A EP09155103 A EP 09155103A EP 2101059 A1 EP2101059 A1 EP 2101059A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pump
- pump chamber
- oscillating
- bearing ring
- 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- Withdrawn
Links
Images
Classifications
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
Definitions
- the invention relates to a vibrating piston pump according to the preamble of claim 1 and a vending machine with such an oscillating piston pump.
- Oscillating piston pumps having a gap between the pumping chamber and the piston, which gap is filled by the fluid during operation of the pump and acts as a fluid seal between the piston and the pumping chamber, are also referred to as liquid-sealed oscillating piston pumps.
- Such oscillating piston pumps are used in particular in the automotive sector, for example, is from the WO-A1-03 / 027454 a urea pump for injecting urea into the exhaust system of a motor vehicle.
- Vibrating piston pumps with liquid seal have the advantage that they compared to the usual oscillating piston pumps with O-ring seals (see. WO-A1-95 / 03198 ) have improved dry-running properties.
- the known liquid seals also have disadvantages: High pressures, high flow rates and good dry suction can only be achieved by a very narrow gap between the lateral surface of the piston and the pump chamber and / or the liquid seal, must be over a long distance parallel to the longitudinal axis of the piston extend, ie the space required for the piston and thus for the whole pump is increased. The thinner the gap and the longer the gap the greater the risk that the piston is in operation tilted and then dragged on the pump chamber or even blocked.
- the invention has for its object to provide a vibrating piston pump, which is inexpensive to produce, has good dry-running properties and a long life and yet generates a high discharge pressure.
- the oscillating piston pump for pumping a fluid comprises at least one pump chamber having an inlet and an outlet, and at least one piston displaceable in the pump chamber parallel to its longitudinal axis. Between the pump chamber and the piston is a gap which is filled by the fluid during operation of the pump and (together with the fluid) acts as a fluid seal between the piston and the pump chamber.
- On the jacket surface of the piston sits at least one bearing ring, preferably two bearing rings.
- These bearing rings may be made of a non-magnetic material, such as an elastic plastic or a ceramic, which has a low coefficient of friction with respect to the material from which the pump chamber is made. Such bearing rings allow accurate guidance of the piston in the pump chamber. In addition, the risk of cold welding of the piston and pump chamber can be excluded. The otherwise necessary expensive coating of piston and / or pump chamber can be omitted.
- Usual pump chambers are cylindrical and usual pistons correspondingly as well. Such parts can be manufactured with high precision at low cost as turned parts.
- the liquid seal can be formed both between the lateral surface of the bearing ring and the pump chamber and / or through another gap between the piston and the pump chamber. If the gap between the outer surface of the bearing ring and the pump chamber does not or only slightly contributes to the liquid seal, then the bearing of the piston can be decoupled from the seal of the piston against the pump chamber, whereby the risk of overdetermined storage is further reduced.
- the bearing ring is seated in a e.g. annular recess on the lateral surface of the piston, while the bearing ring can rest on one or on two opposite side surfaces and thereby fixed in the axial direction.
- bearing ring If the bearing ring is slotted, it can be easily widened for placement on the outer surface of the piston.
- the slot is arranged obliquely to the longitudinal axis of the piston. In addition, it can also run diagonally to the radial.
- the slot is preferably not rectilinear, but rather corrugated and / or stepped.
- Closed bearing rings can e.g. thermally expanded and then applied to the piston. After cooling, the bearing ring then sits tightly on the piston.
- closed bearing rings can be pushed onto the piston and fixed with at least one pressed-on sleeve and / or at least one securing ring on the piston.
- At least one sealing ring e.g. an O-ring.
- the sealing ring can compensate for any irregularities of the pump chamber with its elasticity.
- the sealing ring also ensures sufficient contact pressure of the bearing ring against the pump chamber. In addition, gap losses between the bearing ring and the piston can be avoided.
- At least one of the two end outer edges of the bearing ring is preferably chamfered, so that the piston can be easily inserted into the pump chamber with mounted bearing ring.
- Vending machines in which liquid-sealed oscillating piston pumps can be used include any type of hot and cold beverage dispensers or preparers, as e.g. are usually placed in self-service areas. Because of the good dry-running properties and the high achievable pressures of the liquid-sealed oscillating piston pumps, these are particularly suitable for hot water production in espresso machines.
- the oscillating piston pump 1 in FIG. 1 has a pump sleeve 20 which is fixed by means of two clamping sleeves 95.1, 95.2 in the opening of a magnetic coil 60.
- the clamping sleeves 95.1, 95.2 each have an external thread 96.1, 96.2, which engages in a complementary internal thread of the magnetic coil 60 and a projection 97.1, 97.2, which is an abutment for the end face of the sleeve 20.
- the supernatant 97.1 has an internal thread, which is screwed into a connection piece as an inlet 12 of the oscillating piston pump 1.
- a magnetic armature 80 is screwed.
- the armature 80 has a stepped recess 81 which connects its two end faces.
- In the channel is in a region 85, a valve chamber for a non-illustrated check valve.
- In the areas of the threads are as usual recesses in the O-rings (not shown) are inserted.
- a piston 30 is made of a magnetic material.
- the piston 30 has a channel 35 which connects its end faces.
- the channel 35 is on the outlet side (also possible inlet side) extended to a valve chamber 36 in which a non-illustrated check valve sits.
- the piston 30 is stepped tapers on the outlet side and sits with its tapered Bereic 34 in the inlet-side region of the recess of the armature 80th
- the piston 30 When the solenoid 60 is energized, the piston 30 is displaced parallel to the common longitudinal axis 31 of the piston 30 and the sleeve 20 in the direction of the inlet 12 against the force of a spring 50. In this case, a pump chamber is released in the recess 81 and there is a negative pressure in the recess 81. Accordingly, the valve in the valve space 85 remains closed and the valve in the valve space 36 of the channel 35 opens, so that a fluid, for example air, a gas, oil and / or water flows into the pump chamber. When the magnet is turned off or - depending on the material of the piston 30 - is reversed polarity, then the piston 30 presses the fluid through the now-opening valve in the area 85.
- a fluid for example air, a gas, oil and / or water
- the piston has two axially spaced bearing rings 70, each in an annular recess 90 of the outlet side tapered portion of the piston sitting (see. Fig. 2 to Fig. 4 ).
- the outer diameter of the bearing rings is slightly larger than the outer diameter of the outlet side tapered portion of the piston 30.
- the bearing rings are a few 1/100 mm (less than 50/100 mm, preferably less 25/100 mm) over the lateral surface 37.4 of the piston 30 in his the outlet side tapered region and sit tight on the piston 30.
- the bearing rings 70 are made of an elastic material which has the lowest possible coefficient of friction compared to the material of the armature 80.
- the bearing rings 70 take over both the mechanical bearing (guide) of the piston 30, as well as in cooperation with the fluid, the sealing of the gap between the piston 30 and the recess 81st
- FIGS. 5 to 10 show greatly simplified different ways of arranging the bearing rings on two piston types.
- the pistons in the Figures 5 . 6 9 and 10 correspond to the piston in Figure 1 to 4 ,
- This stepped piston 30 has a larger diameter portion 33 and a reduced diameter portion 34.
- the region 33 has a larger diameter in order to achieve the largest possible magnetic flux through the piston 30.
- Correspondingly large is the force exerted on the piston 30 magnetic force.
- the area of the end face of the tapered region determines, for a given force, the pressure that can be maximally generated by the oscillating piston pump.
- the liquid seal is formed between the lateral surface 37.4 of the tapered region and the pump chamber. If, as in the FIGS.
- one or more bearing rings are arranged on the lateral surface 37.4 of the tapered portion 34, it must be ensured when dimensioning the bearing rings 70 that they not only mechanically support the piston 30, ie guide it in the pump chamber, but are also part of the fluid seal.
- the optimum length of the bearing rings 70 in the axial direction depends on the viscosity of the fluid to be pumped, the thickness of the gap between the corresponding bearing ring 70 and the inner wall of the pump chamber and the maximum achievable pressure and must be determined from case to case by simple experiments ,
- bearing rings 70 seated or seated on the lateral surface 37.3 of the region 33 of the piston 30 with the larger diameter, then these bearing rings 70 serve only the mechanical support or guidance of the Kolbem 30 in the pump chamber.
- These bearing rings 70 can be designed accordingly without the limitations resulting from the liquid seal. In this case, of course, it is to be ensured that the gap between the tapered portion 34 and the inner wall of the pump chamber with the fluid forms a liquid seal according to the requirements.
- FIGS. 7 and 8th each show a possibility for arrangement of one or two bearing rings 70 on a substantially cylindrical piston 30th
- FIG. 11 For example, one way to mount non-slotted bearing rings 70 onto a piston is shown.
- One end of the piston 30 is stepped reduced in diameter, so that a bearing ring 70 can be pushed onto the piston 30 to the stage that serves as a stop.
- a fixing ring 75 is pressed onto the tapered end of the piston 30 and sets the Laggering 70 firmly.
- a Seegering could be used as a fixing ring 75. It only needs to be noted that the fixing ring 75 does not project radially beyond the bearing ring. This method is particularly suitable for ceramic bearing rings.
- FIG. 12 sits a bearing ring 70 in an annular groove on the lateral surface 37 of a piston 30. Between the piston 30 and the bearing ring 70 are two spaced apart sealing rings 76, here O-rings arranged. The sealing rings sit in annular recesses of the annular groove. Of course, the bearing ring 70 does not have to sit in an annular groove for it.
- the sealing rings 76 are elastic and can compensate for any unevenness of the inner wall of the pump chamber.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft eine Schwingkolbenpumpe nach den Oberbegriff des Anspruchs 1 sowie einen Getränkeautomaten mit einer solchen Schwingkolbenpumpe.The invention relates to a vibrating piston pump according to the preamble of
Schwingkolbenpumpen, die einen Spalt zwischen der Pumpenkammer und dem Kolben aufweisen, wobei der Spalt beim Betrieb der Pumpe von dem Fluid gefüllt wird und als Flüssigkeitsdichtung zwischen dem Kolben und der Pumpenkammer wirkt, werden auch als flüssigkeitsgedichtete Schwingkolbenpumpen bezeichnet. Solche Schwingkolbenpumpen werden insbesondere im KFZ-Bereich eingesetzt, beispielsweise ist aus der
Schwingkolbenpumpen mit Flüssigkeitsdichtung haben den Vorteil, dass sie im Vergleich zu den sonst üblichen Schwingkolbenpumpen mit O-Ringdichtungen (vgl.
Der Erfindung liegt die Aufgabe zugrunde, eine Schwingkolbenpumpe bereitzustellen, die günstig herstellbar ist, gute Trockenlaufeingenschaften und eine lange Lebensdauer aufweist und dennoch einen hohen Förderdruck erzeugt.The invention has for its object to provide a vibrating piston pump, which is inexpensive to produce, has good dry-running properties and a long life and yet generates a high discharge pressure.
Diese Aufgabe wird durch eine Vorrichtung nach dem Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a device according to
Die Schwingkolbenpumpe zum Pumpen eines Fluids, umfasst mindestens eine Pumpenkammer, die einen Einlass und einen Auslass aufweist, und mindestens einen in der Pumpenkammer parallel zu seiner Längsachse verschiebbaren Kolben. Zwischen der Pumpenkammer und dem Kolben ist ein Spalt, der beim Betrieb der Pumpe von dem Fluid gefüllt wird und (zusammen mit dem Fluid) als Flüssigkeitsdichtung zwischen dem Kolben und der Pumpenkammer wirkt. Auf der Mantelfäche des Kolbens sitzt mindestens ein Lagerring, vorzugsweise zwei Lagerringe. Diese Lagerringe können aus einem nicht magnetischem Material, z.B. einem elastischen Kunstoff oder einer Keramik hergestellt sein, das einen geringen Reibungskoeffizienten gegenüber dem Werkstoff, aus dem die Pumpenkammer ist, aufweist. Solche Lagerringe ermöglichen eine genaue Führung des Kolbens in der Pumpenkammer. Zudem kann die Gefahr einer Kaltverschweissung von Kolben und Pumpenkammer ausgeschlossen werden. Die ansonsten notwenige teure Beschichtung von Kolben und/oder Pumpenkammer kann entfallen.The oscillating piston pump for pumping a fluid comprises at least one pump chamber having an inlet and an outlet, and at least one piston displaceable in the pump chamber parallel to its longitudinal axis. Between the pump chamber and the piston is a gap which is filled by the fluid during operation of the pump and (together with the fluid) acts as a fluid seal between the piston and the pump chamber. On the jacket surface of the piston sits at least one bearing ring, preferably two bearing rings. These bearing rings may be made of a non-magnetic material, such as an elastic plastic or a ceramic, which has a low coefficient of friction with respect to the material from which the pump chamber is made. Such bearing rings allow accurate guidance of the piston in the pump chamber. In addition, the risk of cold welding of the piston and pump chamber can be excluded. The otherwise necessary expensive coating of piston and / or pump chamber can be omitted.
Übliche Pumpenkammern sind zylindrisch und übliche Kolben entsprechend ebenso. Solche Teile können mit hoher Präzision bei geringen Kosten als Drehteile hergestellt werden.Usual pump chambers are cylindrical and usual pistons correspondingly as well. Such parts can be manufactured with high precision at low cost as turned parts.
Die Flüssigkeitsdichtung kann sowohl zwischen der Mantelfläche des Lagerrings und der Pumpenkammer und/oder durch einen anderen Spalt zwischen dem Kolben und der Pumpenkammer ausgebildet werden. Wenn der Spalt zwischen der Mantelfläche des Lagerringes und der Pumpenkammer gar nicht oder nur wenig zu der Flüssigkeitsdichtung beiträgt, dann kann die Lagerung des Kolbens von der Dichtung des Kolbens gegen die Pumpenkammer entkoppelt werden, wodurch das Risiko einer überbestimmten Lagerung nochmals reduziert wird.The liquid seal can be formed both between the lateral surface of the bearing ring and the pump chamber and / or through another gap between the piston and the pump chamber. If the gap between the outer surface of the bearing ring and the pump chamber does not or only slightly contributes to the liquid seal, then the bearing of the piston can be decoupled from the seal of the piston against the pump chamber, whereby the risk of overdetermined storage is further reduced.
Bevorzugt sitzt der Lagerring in einer z.B. ringförmigen Ausnehmung auf der Mantelfläche des Kolbens, dabei kann der Lagerring an einer oder auch an zwei gegenüberliegenden Seitenflächen anliegen und dadurch in axialer Richtung festgelegt werden.Preferably, the bearing ring is seated in a e.g. annular recess on the lateral surface of the piston, while the bearing ring can rest on one or on two opposite side surfaces and thereby fixed in the axial direction.
Wenn der Lagerring geschlitzt ist, kann er zum Aufsetzen auf die Mantelfläche des Kolbens leicht geweitet werden.If the bearing ring is slotted, it can be easily widened for placement on the outer surface of the piston.
Damit möglichst kein Fluid durch den Schlitz strömt, ist dieser natürlich bevorzugt möglichst schmal zu bemessen. Bevorzugt ist der Schlitz schräg zur Längsachse des Kolbens angeordnet. Zusätzlich kann er auch noch schräg zur Radialen verlaufen.In order to avoid any fluid flowing through the slot, this is of course preferred to be as narrow as possible. Preferably, the slot is arranged obliquely to the longitudinal axis of the piston. In addition, it can also run diagonally to the radial.
Der Schlitz ist aus dem gleichen Grund bevorzugt nicht geradlinig sonder gewellt und/oder gestuft.For the same reason, the slot is preferably not rectilinear, but rather corrugated and / or stepped.
Geschlossene Lagerringe können z.B. thermisch geweitet und dann auf den Kolben aufgebracht werden. Nach dem Abkühlen sitzt der Lagerring dann stramm auf dem Kolben. Alternativ können geschlossene Lagerringe auf den Kolben aufgeschoben und mit mindestens einer aufgepressten Hülse und/oder mindestens einem Sicherungsring auf dem Kolben fixiert werden.Closed bearing rings can e.g. thermally expanded and then applied to the piston. After cooling, the bearing ring then sits tightly on the piston. Alternatively, closed bearing rings can be pushed onto the piston and fixed with at least one pressed-on sleeve and / or at least one securing ring on the piston.
Bevorzugt ist zwischen dem Kolben und dem Lagerring mindestens ein Dichtring, z.B. ein O-Ring. Der Dichtring kann mit seiner Elastizität etwaige Ungleichmäßigkeiten der Pumpenkammer ausgleichen. Auch sorgt der Dichtring für einen ausreichenden Andruck des Lagerringes an die Pumpenkammer. Zudem werden Spaltverluste zwischen dem Lagerring und dem Kolben vermieden.Preferably, between the piston and the bearing ring at least one sealing ring, e.g. an O-ring. The sealing ring can compensate for any irregularities of the pump chamber with its elasticity. The sealing ring also ensures sufficient contact pressure of the bearing ring against the pump chamber. In addition, gap losses between the bearing ring and the piston can be avoided.
Mindestens eine der beiden stirnseitigen Außenkanten des Lagerringes ist bevorzugt angefast, damit der Kolben mit montiertem Lagerring einfach in die Pumpenkammer eingesetzt werden kann.At least one of the two end outer edges of the bearing ring is preferably chamfered, so that the piston can be easily inserted into the pump chamber with mounted bearing ring.
Getränkeautomaten in denen flüssigkeitsgedichtete Schwingkolbenpumpen eingesetzt werden können umfassen jede Art von Heiß- und Kaltgetränkespendern oder -bereitern, wie sie z.B. in Selbstbedienungsbereichen üblicherweise aufgestellt sind. Wegen der guten Trockenlaufeigenschaften und der hohen erzielbaren Drücke der flüssigkeitsgedichteten Schwingkolbenpumpen eignen sich diese insbesondere zur Heißwasserförderung in Espressomaschinen.Vending machines in which liquid-sealed oscillating piston pumps can be used include any type of hot and cold beverage dispensers or preparers, as e.g. are usually placed in self-service areas. Because of the good dry-running properties and the high achievable pressures of the liquid-sealed oscillating piston pumps, these are particularly suitable for hot water production in espresso machines.
Die Erfindung wird nachstehend ohne Beschränkung des allgemeinen Erfindungsgedankens anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen exemplarisch beschrieben.
Figur 1- zeigt eine Schwingkolbenpumpe im Längsschnitt,
- Figur 2
- zeigt eine isometrische Abbildung des Kolbens der Schwingkolbenpumpe aus
Figur1 , - Figur 3
- zeigt eine Seitenansicht des Kolbens aus
Figur 2 , - Figur 4
- zeigt den Kolben aus
Figur 2 und 3 im Längsschnitt, - Figuren 5
- bis 10 zeigen je einen Kolben für eine Schwingkolbenpumpe und
- Figur 11
- und 12 zeigen je einen Ausschnitt eines Kolbes.
- FIG. 1
- shows a piston pump in longitudinal section,
- FIG. 2
- shows an isometric image of the piston of the oscillating piston pump
Figur1 . - FIG. 3
- shows a side view of the piston
FIG. 2 . - FIG. 4
- shows the piston
FIGS. 2 and 3 in longitudinal section, - Figures 5
- to 10 each show a piston for a vibrating piston pump and
- FIG. 11
- and 12 each show a section of a Kolbes.
Die Schwingkolbenpumpe 1 in
In der Hülse 20 ist ein Kolben 30 aus einem magnetischen Material. Der Kolben 30 hat einen Kanal 35, der seine Stirnseiten verbindet. Der Kanal 35 ist auslassseitig (ebenso möglich einlassseitig) zu einem Ventilraum 36 erweitert, in dem ein nicht dargestelltes Rückschlagventil sitzt. Der Kolben 30 ist auslassseitig gestuft verjüngt und sitzt mit seinem verjüngten Bereic 34 in dem einlassseitigen Bereich der Ausnehmung des Ankers 80.In the
Wenn die Magnetspule 60 angeregt wird, dann wird der Kolben 30 gegen die Kraft einer Feder 50 parallel zur gemeinsamen Längsachse 31 des Kolbens 30 und der Hülse 20 in Richtung des Einlasses 12 verschoben. Dabei wird ein Pumpenraum in der Ausnehmung 81 freigegeben und es entsteht in der Ausnehmung 81 ein Unterdruck. Entsprechend bleibt das Ventil in dem Ventilraum 85 geschlossen und das Ventil in dem Ventilraum 36 des Kanals 35 öffnet sich, so dass ein Fluid, z.B. Luft, ein Gas, Öl und/oder Wasser in den Pumpenraum strömt. Wenn der Magnet abgeschaltet oder-je nach Material des Kolbens 30 - umgepolt wird, dann drückt der Kolben 30 das Fluid durch das nun öffnende Ventil in dem Bereich 85. Bei diesem Vorgang darf möglichst kein Fluid an dem Kolben vorbei durch den Spalt zwischen dem Kolben 30 und der Ausnehmung 81 zurückfließen. Deshalb hat der Kolben zwei axial voneinander beabstandete Lagerringe 70, die in je einer ringförmigen Ausnehmung 90 des auslassseitig verjüngten Bereichs des Kolbens sitzen (vgl.
Die
Wenn ein oder mehrere Lagerringe 70 auf der Mantelfläche 37.3 des Bereichs 33 des Kolben 30 mit dem größerem Durchmesser sitzt oder sitzen, dann dienen diese Lagerringe 70 lediglich der mechanischen Lagerung bzw. Führung der des Kolbem 30 in der Pumpenkammer. Diese Lagerringe 70 können entsprechend ohne die Beschränkungen, die sich durch die Flüssigkeitsdichtung ergeben ausgelegt werden. In diesem Fall ist natürlich sicherzustellen, dass der Spalt zwischen dem verjüngten Bereich 34 und der Innenwand der Pumpenkammer mit dem Fluid eine den Anforderungen entsprechende Flüssigkeitsdichtung ausbildet.If one or more bearing rings 70 seated or seated on the lateral surface 37.3 of the
Die
In
In
- 1010
- SchwingkolbenpumpePiston pump
- 1212
- Einlassinlet
- 1414
- Auslassoutlet
- 2020
- Hülseshell
- 2525
- Pumpenkammerpump chamber
- 3030
- Kolbenpiston
- 3131
- Längsachselongitudinal axis
- 3333
- Bereich größeren Durchmessers eines gestuften KolbenArea of larger diameter of a stepped piston
- 3434
- Bereich kleineren Durchmessers eines gestuften KolbenArea of smaller diameter of a stepped piston
- 3535
- Kanalchannel
- 3636
- Erweiterung zu VentilraumExtension to valve chamber
- 3737
- Mantelfläche des KolbenLateral surface of the piston
- 37.337.3
- Mantelfläche im Bereich größeren Durchmessers eines gestuften KolbenLateral surface in the region of larger diameter of a stepped piston
- 37.437.4
- Mantelfläche im Bereich kleineren Durchmessers eines gestuften KolbenLateral surface in the area of smaller diameter of a stepped piston
- 3939
- Abflachung des KolbensFlattening of the piston
- 5050
- Federfeather
- 6060
- Magnetmagnet
- 7070
- Lagerringbearing ring
- 7575
- Fixierringfixing
- 7676
- Dichtungsringsealing ring
- 8080
- Ankeranchor
- 8181
- Ausnehmung des Ankers 80Recess of the armature 80th
- 8585
- Ventilraumvalve room
- 9090
- ringförmige Ausnehmungannular recess
- 95.195.1
- Spannhülseclamping sleeve
- 95.295.2
- Spannhülseclamping sleeve
- 96.196.1
- Überstand der Spannhülse 95.1Overhang of the clamping sleeve 95.1
- 96.296.2
- Überstand der Spannhülse 95.2Overhang of the clamping sleeve 95.2
- 97.197.1
- Außengewinde der Spannhülse 95.1External thread of the clamping sleeve 95.1
- 97.297.2
- Außengewinde der Spannhülse 95.2External thread of the clamping sleeve 95.2
Claims (10)
auf der Mantelfäche (37) des Kolbens (30) mindestens ein Lagerring (70) sitzt, um den Kolben(30) in der Pumpenkammer zu lagern.An oscillating piston pump (1) for pumping a fluid, comprising
on the jacket surface (37) of the piston (30) at least one bearing ring (70) is seated to support the piston (30) in the pump chamber.
dadurch gekennzeichnet, dass
die Flüssigkeitsdichtung durch einen Spalt zwischen der Mantelfläche des Lagerrings 70 und der Pumpenkammer ausgebildet ist.Oscillating piston pump (1) according to claim 1,
characterized in that
the liquid seal is formed by a gap between the lateral surface of the bearing ring 70 and the pump chamber.
dadurch gekennzeichnet, dass
der Lagerring (70) in einer ringförmigen Ausnehmung auf der Mantelfäche des Kolbens (30) sitzt.Oscillating piston pump (1) according to claim 1 or 2,
characterized in that
the bearing ring (70) is seated in an annular recess on the jacket surface of the piston (30).
dadurch gekennzeichnet, dass
der Lagerring(70) einen Schlitz aufweist.Oscillating piston pump (1) according to one of the preceding claims,
characterized in that
the bearing ring (70) has a slot.
dadurch gekennzeichnet, dass der Schlitz schräg zur Längsachse (31) des Kolbens (30) verläuft.Oscillating piston pump (1) according to claim 4,
characterized in that the slot extends obliquely to the longitudinal axis (31) of the piston (30).
dadurch gekennzeichnet, dass
der Schlitz gewellt ist.Oscillating piston pump (1) according to claim 4 or 5,
characterized in that
the slot is wavy.
dadurch gekennzeichnet, dass
zwischen dem Kolben (30) und dem Lagerring (70) mindestens ein elastischer Dichtring (76) sitzt.Oscillating piston pump (1) according to one of the preceding claims,
characterized in that
between the piston (30) and the bearing ring (70) at least one elastic sealing ring (76) sits.
dadurch gekennzeichnet, dass
mindestens ein Kante der Mantelfläche des Lagerringes angefast ist.Oscillating piston pump (1) according to one of the preceding claims,
characterized in that
at least one edge of the lateral surface of the bearing ring is chamfered.
dadurch gekennzeichnet, dass
mindestens ein Spalt zwischen der Pumpenkammer und dem Kolben (30) ist, der Spalt beim Betrieb der Pumpe von dem Fluid gefüllt wird, und als Flüssigkeitsdichtung zwischen dem Kolben (30) in der Pumpenkammer wirkt.Vending machine, comprising a oscillating piston pump (1) for a fluid, wherein the oscillating piston pump (1) has a pump chamber and a in the pump chamber parallel to its longitudinal axis (31) displaceable piston (30)
characterized in that
there is at least one gap between the pumping chamber and the piston (30), the gap being filled by the fluid during operation of the pump and acting as a fluid seal between the piston (30) in the pumping chamber.
dadurch gekennzeichnet, dass
die Schwingkolbenpumpe (1) eine Schwingkolbenpumpe (1) nach einem der Ansprüche 1 bis 8 ist.Vending machine according to the preceding claim,
characterized in that
the oscillating piston pump (1) is an oscillating piston pump (1) according to one of claims 1 to 8.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008014011 | 2008-03-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2101059A1 true EP2101059A1 (en) | 2009-09-16 |
Family
ID=40809899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09155103A Withdrawn EP2101059A1 (en) | 2008-03-13 | 2009-03-13 | Electromagnetic pump with reciprocating piston |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2101059A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012107983A1 (en) | 2011-08-29 | 2013-02-28 | Jiming Lv | Vibrating piston pump has piston with piston portions that are respectively arranged in chamber sections of pump chamber |
ITGE20120097A1 (en) * | 2012-09-25 | 2014-03-26 | A R S Elettromeccanica Srl | VIBRATION PUMP |
EP2873857A1 (en) * | 2013-11-15 | 2015-05-20 | Defond Components Limited | Fluid pump |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1905351U (en) * | 1964-08-28 | 1964-11-26 | Hans Joachim Bamert | ELECTRIC ROTARY PISTON PUMP. |
WO1995003198A1 (en) | 1993-07-23 | 1995-02-02 | Itt Automotive Europe Gmbh | Hydraulic braking system with skid and drive slip control |
DE29518782U1 (en) * | 1995-11-27 | 1997-03-27 | Speck-Pumpen Walter Speck KG, 91154 Roth | Electromagnetic piston pump |
WO2003027454A1 (en) | 2001-09-25 | 2003-04-03 | Argillon Gmbh | Reducing agent pump for an exhaust gas post-treatment unit on an internal combustion engine |
DE102005048765A1 (en) * | 2005-10-10 | 2007-04-12 | Aweco Appliance Systems Gmbh & Co. Kg | Oscillating anchor pump used in household appliances, e.g. coffee machines comprises a sliding surface formed as a sealing surface for sealing the cylinder of a pump housing during axial displacement of a plunger using a sealing element |
-
2009
- 2009-03-13 EP EP09155103A patent/EP2101059A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1905351U (en) * | 1964-08-28 | 1964-11-26 | Hans Joachim Bamert | ELECTRIC ROTARY PISTON PUMP. |
WO1995003198A1 (en) | 1993-07-23 | 1995-02-02 | Itt Automotive Europe Gmbh | Hydraulic braking system with skid and drive slip control |
DE29518782U1 (en) * | 1995-11-27 | 1997-03-27 | Speck-Pumpen Walter Speck KG, 91154 Roth | Electromagnetic piston pump |
WO2003027454A1 (en) | 2001-09-25 | 2003-04-03 | Argillon Gmbh | Reducing agent pump for an exhaust gas post-treatment unit on an internal combustion engine |
DE102005048765A1 (en) * | 2005-10-10 | 2007-04-12 | Aweco Appliance Systems Gmbh & Co. Kg | Oscillating anchor pump used in household appliances, e.g. coffee machines comprises a sliding surface formed as a sealing surface for sealing the cylinder of a pump housing during axial displacement of a plunger using a sealing element |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012107983A1 (en) | 2011-08-29 | 2013-02-28 | Jiming Lv | Vibrating piston pump has piston with piston portions that are respectively arranged in chamber sections of pump chamber |
ITGE20120097A1 (en) * | 2012-09-25 | 2014-03-26 | A R S Elettromeccanica Srl | VIBRATION PUMP |
EP2711548A3 (en) * | 2012-09-25 | 2014-04-02 | ARS Elettromeccanica S.r.l. | Vibration pump |
EP2873857A1 (en) * | 2013-11-15 | 2015-05-20 | Defond Components Limited | Fluid pump |
CN104653448A (en) * | 2013-11-15 | 2015-05-27 | 东莞辰达电器有限公司 | Fluid pump |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102011055964B4 (en) | fuel feed pump | |
EP2246601B1 (en) | Electromagnetic hydraulic valve | |
DE102012201035A1 (en) | HIGH PRESSURE PUMP | |
DE102010044775A1 (en) | The vibration pump | |
EP2101059A1 (en) | Electromagnetic pump with reciprocating piston | |
DE102011055871B4 (en) | Fuel supply pump and method of making a housing for the same | |
WO2019015863A1 (en) | Piston pump, particularly a high-pressure fuel pump for an internal combustion engine | |
DE102005048765A1 (en) | Oscillating anchor pump used in household appliances, e.g. coffee machines comprises a sliding surface formed as a sealing surface for sealing the cylinder of a pump housing during axial displacement of a plunger using a sealing element | |
DE10344459B4 (en) | Piston pump, in particular high-pressure piston pump | |
DE102009026939A1 (en) | Holding device and high pressure pump with the same | |
DE102011002982B4 (en) | Spring element and corresponding piston pump for pumping fluids | |
DE102004034231B4 (en) | Dosing pump e.g. fuel dosing pump, for vehicle heater has pump body whereby pump body is firmly connected to line adapter by deformation and pump body also has valve seat which is connected to line adapter | |
DE102009002529A1 (en) | Injection pump for internal combustion engine, has sliding bearing whose surface is formed with groove, and glide layer made from PTFE or polyetheretherketone and anchored in groove | |
DE10322598A1 (en) | High-pressure piston pump for internal combustion engine, comprises a holding mechanism, which is radially centered through the cylinder bushing | |
WO2013029758A1 (en) | Electromagnetic pump | |
WO2019015859A1 (en) | Piston pump | |
DE102012024640A1 (en) | Electromagnet driven reciprocating pump for conveying and metering of fluid in motor vehicle, has pump cylinder that is pressed to magnetic element or vice-molded material of magnetic pole against stop | |
DE102008002360A1 (en) | Radial piston pump for supplying fuel to internal combustion engine, has piston comprising cylinder surface, and suction pipeline and high pressure pipelines provided with respective outlets, which concentrically surround common axis | |
DE102012211395A1 (en) | Metering unit for high pressure pump of high pressure injection system for internal combustion engine of motor vehicle, has valve piston bearing made of plastic, and unit for redirecting magnetic field or flux generated by electromagnet | |
DE10016895B4 (en) | Hydraulic block with at least one pump | |
EP3371430A1 (en) | Coolant pump for an internal combustion engine | |
DE102015106276A1 (en) | Oscillating pump with flux guide | |
DE19854719B4 (en) | piston pump | |
EP2905669B1 (en) | Pressure control valve | |
DE202007005224U1 (en) | Valve used as a magnetic valve comprises a bearing bush arranged on an anchor for sliding the anchor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
17P | Request for examination filed |
Effective date: 20100316 |
|
17Q | First examination report despatched |
Effective date: 20100422 |
|
AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20101103 |