EP0094379A1 - Rotary pump for delivering gases and liquids, particulary for use as a driving unit for blood diaphragm pumps - Google Patents

Rotary pump for delivering gases and liquids, particulary for use as a driving unit for blood diaphragm pumps Download PDF

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Publication number
EP0094379A1
EP0094379A1 EP83890083A EP83890083A EP0094379A1 EP 0094379 A1 EP0094379 A1 EP 0094379A1 EP 83890083 A EP83890083 A EP 83890083A EP 83890083 A EP83890083 A EP 83890083A EP 0094379 A1 EP0094379 A1 EP 0094379A1
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EP
European Patent Office
Prior art keywords
piston
orifices
overflow
pump
jacket
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Granted
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EP83890083A
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German (de)
French (fr)
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EP0094379B1 (en
Inventor
Walter Mag.Rer.Nat. Schwab
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Priority claimed from AT185782A external-priority patent/AT376885B/en
Priority claimed from AT17183A external-priority patent/AT376887B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/22—Rotary-piston machines or pumps of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1016—Blood
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/03—Heart-lung

Definitions

  • the invention relates to a rotary pump for driving diaphragm blood pumps for the conveyance of gaseous and liquid substances, in the manner of a trochoidal circular piston pump, which with a 2: 3 ratio with a two-armed trochoidal jacket raceway and a triangular piston revolving on an eccentric of an eccentric shaft, with its corners is in constant sliding contact with the jacket career.
  • the invention relates to rotary pumps which, due to their small external dimensions, can be used wherever the minimal space requirement of these pumps represents a functional necessity or makes this appear desirable.
  • these pumps can be used as pneumatic gas pumps or as hydraulic liquid pumps for driving diaphragm blood pumps and their special forms such as the peristaltic pump, the copulation pump or the peristaltic pump.
  • rotary pumps are generally used in technology, but especially in the field of cardiac technology as pneumatic or hydraulic rotary pumps.
  • the invention relates to the position of the suction or discharge openings.
  • An object of the invention is to avoid these disadvantages.
  • the solution to the problem according to the invention lies in the fact that, in the case of a rotary pump of the type mentioned at the outset, two suction or discharge runs through the housing jacket and end in the jacket career channels are provided, the mouth openings each have an overflow pocket, which extend in the same direction as recesses each over an equally large section of the jacket raceway, the position and dimension of the mouth openings with overflow pockets being determined so that - viewed in the radial section of the pump - that in the direction of rotation of the piston front control edges of the two orifices with overflow pockets coincide with one of the two simultaneous points of the two-arch trochoids of the jacket raceway, while the position of the rear control edges of the two orifices with overflow pockets in the direction of rotation of the piston is determined such that, for example, when the piston is in a dead center position the leading piston corner lies immediately above the front control edge of one of the two orifices, while the trailing piston corner lies directly above the rear control edge of the other orifice opening, so that
  • the rotary pump according to the invention has a housing which consists of a housing jacket 1 with a trochoidal jacket raceway 2 and two side walls, of which only the one designated by 4 is visible in the drawing.
  • a triangular piston 5 rotates on an eccentric 6, the shaft of which is designated 7 and which passes through the side parts.
  • sealing parts are featured see, which consist of sealing strips 8 and 9 sealing bolts. Furthermore, sealing strips 10 are provided on the lateral piston edges, their ends abutting the sealing bolts 9. With the sealing strips 8, the piston 5 is in constant sliding engagement with the jacket raceway 2.
  • the movement of the piston 5 is controlled by the gear transmission 11.
  • the drawing further shows that two suction or exhaust ducts running through the casing shell 1 and opening into the shell raceway 2 are provided, the mouth openings 12, 12 'of which each have an overflow pocket 120 or 120', which are each in the form of recesses of the same size Section (arc) of the jacket raceway 2 extend in the same direction, the position and dimension of the orifices 12, 12 'with overflow pockets 120, 120' being determined such that - viewed in the radial section of the pump - the control edges 16, which are front in the direction of rotation 13 of the piston 5, 16 'of the two orifices 12, 12' with overflow pockets 120, 120 'each with one of the two simultaneous points D 1 , D 2 of the double-arched trochoids of the jacket raceway 2 coincide, while the position of the rear control edges 14, 14' in the direction of rotation 13 of the piston 5 of the two orifices 12, 12 'with overflow pockets 120, 120' is determined so that, for example, when the piston 5 is in the dead center position in
  • the drive unit consisting of an electric motor or an electric motor with a gearbox, is usually located outside the rotary pump brought and the drive takes place via the eccentric shaft 7.
  • the rotary pump according to the invention is designed for a portable drive unit outside a human or animal body or is even implanted in a human or animal body, it is more sensible due to the small construction volume if the electric motor including the gearbox is accommodated inside the piston 5, which is energy-wise is possible because the pump power of an implanted membrane blood pump requires a few watts of power.
  • the electric motor can also be accommodated inside the piston and the gearbox outside the pump, or the gearbox inside the piston and the electric motor outside the pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • External Artificial Organs (AREA)

Abstract

1. A rotary pump for driving blood diaphragm pumps and for delivering gaseous and liquid substances, in the manner of a trochoidal rotary piston pump, equipped at a 2:3 ratio with a two-lobed trochoidal casing track (2) and a triangular piston (5) rotating on an eccentric (6) of an eccentric shaft (7), the corners of said piston being in constant sliding contact with the casing track (2), characterized in that two suction and discharge channels are provided which extend through the barrel casing (1) and open into the casing track (2), their orifices (12, 12'), each exhibiting an overflow pocket (120, 120') extending in the same direction in the form of a recess over an equally large portion of the casing track (2) in each case, the position and dimension of the orifices (12, 12') with the overflow pockets (120, 120') being defined such that - regarded in a radial section of the pump - the control edges (16, 16'), at the front in the direction of rotation (13) of the piston (5), of the two orifices (12, 12') with the overflow pockets (120, 120') each coincide with one of the two simultaneous points (D1 , D2 ) of the two-lobed trochoid of the casing track (2), while the position of the control edges (14, 14'), at the back in the direction of rotation (13) of the piston (5), of the two orifices (12, 12') with the overflow pockets (120, 120') is defined such that when the piston (5) is in the dead center position, for example, the forward piston corner (17) in a chamber (A) is located directly above the front control edge (16') of one of the two orifices (12'), while the following piston corner (15) is located directly above the back control edge (14) of the other orifice (12).

Description

Die Erfindung betrifft eine Rotationspumpe für den Antrieb von Membranblutpumpen zur Förderung gasförmiger und flüssiger Stoffe, in der Art einer Trochoidkreiskolbenpumpe, die bei einer 2 : 3 Übersetzung mit einer zweibogigen trochoidenförmigen Mantellaufbahn und einem auf einem Exzenter einer Exzenterwelle umlaufenden dreieckigen Kolben, der mit seinen Ecken mit der Mantellaufbahn in ständig gleitender Berührung steht, ausgestattet ist.The invention relates to a rotary pump for driving diaphragm blood pumps for the conveyance of gaseous and liquid substances, in the manner of a trochoidal circular piston pump, which with a 2: 3 ratio with a two-armed trochoidal jacket raceway and a triangular piston revolving on an eccentric of an eccentric shaft, with its corners is in constant sliding contact with the jacket career.

Die Erfindung bezieht sich dabei auf Rotationspumpen, welche aufgrund ihrer geringen Außenmaße überall dort eingesetzt werden können, wo minimaler Platzbedarf dieser Pumpen eine funktionelle Notwendigkeit darstellt oder dies als wünschenswert erscheinen läßt. Diese Pum-Den können auf dem Gebiet der Herztechnologie als pneumatische Gaspumpen oder als hydraulische Flüssigkeitspumpen für den Antrieb von Membranblutpumpen sowie deren speziellen Sonderformen wie z.B. der Peristaltikpumpe, der Kopulsationspumpe oder der Schlauchventrikelpumpe verwendet werden.The invention relates to rotary pumps which, due to their small external dimensions, can be used wherever the minimal space requirement of these pumps represents a functional necessity or makes this appear desirable. In the field of cardiac technology, these pumps can be used as pneumatic gas pumps or as hydraulic liquid pumps for driving diaphragm blood pumps and their special forms such as the peristaltic pump, the copulation pump or the peristaltic pump.

Diese Rotationspumpen sind allgemein in der Technik, besonders jedoch auf dem Gebiet der Herztechnologie als pneumatische beziehungsweise hydraulische Rotationspumpen einsetzbar. Im speziellen betrifft die Erfindung die Lage der Ansaug- beziehungsweise Ausstoß- öffnungen.These rotary pumps are generally used in technology, but especially in the field of cardiac technology as pneumatic or hydraulic rotary pumps. In particular, the invention relates to the position of the suction or discharge openings.

Aus der AT-PS 355 177, der AT-PS 351 137, der DE-OS 2402084, der DE-OS 2242247 und der DE-OS 2021513 sind Rotationskolbenpumpen und Verdichter bekannt geworden, bei denen die Einlässe sowohl als Umfangs- als auch als Seiteneinlaß beschrieben werden. Keine dieser Rotationsmaschinen beschreibt eine Pumpe oder einen Verdichter, wo der jeweilige Einlaß alternierend zugleich als Ansaug- beziehungsweise als Ausstoßöffnung trotz durchlaufender Drehung des Kolbens und Beibehaltung der Drehrichtung des Kolbens verwendet wird, wobei die Drehrichtung egal ist, so wie es der Gegenstand dieser Erfindung offenbart.From the AT-PS 355 177, the AT-PS 351 137, the DE-OS 2402084, the DE-OS 2242247 and the DE-OS 2021513 rotary piston pumps and compressors are known in which the inlets both as a circumference and as Side inlet are described. None of these rotary machines describe a pump or a compressor ter, where the respective inlet is used alternately as a suction or discharge opening despite continuous rotation of the piston and maintaining the direction of rotation of the piston, the direction of rotation is irrelevant, as disclosed by the subject of this invention.

Beim derzeitigen Stand der Herzpumpentechnik besteht die Tendenz zur Entwicklung pulsatil arbeitender Blutpumpen dahingehend, daß Membranblutpumpen mittels Druckplatten mechanisch betätigt werden, wobei die Kraftübertragung zwischen der Druckplatte und der Pumpenmembran meist hydraulisch erfolgt und die mechanische Bewegung der Druckplatte durch einen elektromechanischen Antrieb erzeugt wird.At the current state of the heart pump technology, there is a tendency to develop pulsatile blood pumps such that diaphragm blood pumps are actuated mechanically by means of pressure plates, the force transmission between the pressure plate and the pump diaphragm usually taking place hydraulically and the mechanical movement of the pressure plate being generated by an electromechanical drive.

Eine weitere derzeitigeEntwicklung verfolgt das Ziel, die Membranblutpumpen über Druckplatten mit Hilfe elektromagnetischer Solenoide zu betreiben.Another current development pursues the goal of operating the membrane blood pumps via pressure plates with the aid of electromagnetic solenoids.

Eine andere derzeitige Entwicklung verwendet eine 2 : 3 übersetzte Wankelpumpe, deren Ein- und Aulaßöffnungen allerdings so angeordnet sind, daß der Rotationskolben nur im Wendebetrieb arbeiten kann, was letztlich von großem Nachteil ist - was die Laufruhe, den Leistungsverbrauch und die starke mechanische Abnützung der Getriebeteile betrifft - und wozu eigentlich eine Hubpumpe besser geeignet erscheint.Another current development uses a 2: 3 geared rotary pump, the inlet and outlet openings of which are arranged in such a way that the rotary piston can only work in reversing mode, which is ultimately a major disadvantage - which is smoothness, power consumption and strong mechanical wear Gearbox parts are concerned - and what a lifting pump actually seems better suited for.

Der Nachteil all dieser Entwicklungen liegt darin, daß entweder die Antriebseinheiten für transportable Geräte zu groß geraten oder daß bei entsprechender Kleinheit diese Antriebseinheiten eine zu geringe Pumpleistung entwickeln.The disadvantage of all these developments is that either the drive units for transportable devices are too large or that, given the corresponding small size, these drive units develop an insufficient pump power.

Eine Aufgabe der Erfindung ist es, diese Nachteile zu vermeiden.An object of the invention is to avoid these disadvantages.

Die erfindungsgemäße Lösung des Problems liegt dar- in, daß bei einer Rotationspumpe der eingangs erwähnten Art zwei durch den Gehäusemantel verlaufende und in die Mantellaufbahn mündende Ansaug- beziehungsweise Ausstoßkanäle vorgesehen sind, deren Mündungsöffnungen jeweils eine Uberströmtasche aufweisen, die sich als Ausnehmungen über jeweils einen gleich großen Abschnitt der Mantellaufbahn gleichsinnig erstrecken, wobei die Lage und Abmessung der Mündungsöffnungen mit Überströmtaschen so bestimmt ist, daß - im Radialschnitt der Pumpe betrachtet - die in Drehrichtung des Kolbens vorderen Steuerkanten der beiden Mündungsöffnungen mit Überströmtaschen mit je einem der beiden Simultanpunkte der zweibogigen Trochoide der Mantellaufbahn zusammenfallen, während die Lage der im Drehsinn des Kolbens hinteren Steuerkanten der beiden Mündungsöffnungen mit Uberströmtaschen so bestimmt ist, daß beispielsweise bei Totpunktstellung des Kolbens in einer Kammer die vorlaufende Kolbenecke unmittelbar über der vorderen Steuerkante einer der beiden Mündungsöffnungen liegt, während die nachlaufende Kolbenecke unmittelbar über der hinteren Steuerkante der anderen Mündungsöffnung liegt, sodaß trotz durchlaufender Drehung des Kolbens und Beibehaltung der Drehrichtung des Kolbens eine alternierende Saug- und Ausstoßwirkung an den öffnungen der Pumpe auftritt, wobei die Drehrichtung egal ist.The solution to the problem according to the invention lies in the fact that, in the case of a rotary pump of the type mentioned at the outset, two suction or discharge runs through the housing jacket and end in the jacket career channels are provided, the mouth openings each have an overflow pocket, which extend in the same direction as recesses each over an equally large section of the jacket raceway, the position and dimension of the mouth openings with overflow pockets being determined so that - viewed in the radial section of the pump - that in the direction of rotation of the piston front control edges of the two orifices with overflow pockets coincide with one of the two simultaneous points of the two-arch trochoids of the jacket raceway, while the position of the rear control edges of the two orifices with overflow pockets in the direction of rotation of the piston is determined such that, for example, when the piston is in a dead center position the leading piston corner lies immediately above the front control edge of one of the two orifices, while the trailing piston corner lies directly above the rear control edge of the other orifice opening, so that despite the continuous rotation of the piston and maintaining the direction of rotation of the piston an alternating suction and discharge effect occurs at the openings of the pump, the direction of rotation being irrelevant.

Die Erfindung wird nachstehend anhand der Zeichnung beispielsweise erläutert. Diese zeigt eine erfindungsgemäße Rotationspumpe im Radialschnitt mit in Draufsicht gezeigtem, in Totpunktstellung befindlichem Kolben.The invention is explained below with reference to the drawing, for example. This shows a rotary pump according to the invention in radial section with the piston shown in plan view and in the dead center position.

Die erfindungsgemäße Rotationspumpe weist ein Gehäuse auf, welches aus einem Gehäusemantel 1 mit trochoidenförmiger Mantellaufbahn 2 und zwei Seitenwänden besteht, von denen nur die mit 4 bezeichnete in der Zeichnung sichtbar ist.The rotary pump according to the invention has a housing which consists of a housing jacket 1 with a trochoidal jacket raceway 2 and two side walls, of which only the one designated by 4 is visible in the drawing.

In dem Gehäuse läuft ein dreieckiger Kolben 5 auf einem Exzenter 6 um, dessen Welle mit 7 bezeichnet ist und welche die Seitenteile durchsetzt.In the housing, a triangular piston 5 rotates on an eccentric 6, the shaft of which is designated 7 and which passes through the side parts.

An den Ecken des Kolbens 5 sind Dichtteile vorgesehen, die aus Dichtleisten 8 und Dichtbolzen 9 bestehen. Ferner sind an den seitlichen Kolbenrändern Dichtstreifen 10 vorgesehen, die mit ihren Enden an den Dichtbolzen 9 anliegen. Mit den Dichtleisten 8 ist der Kolben 5 in ständigem gleitenden Eingriff mit der Mantellaufbahn 2.At the corners of the piston 5 sealing parts are featured see, which consist of sealing strips 8 and 9 sealing bolts. Furthermore, sealing strips 10 are provided on the lateral piston edges, their ends abutting the sealing bolts 9. With the sealing strips 8, the piston 5 is in constant sliding engagement with the jacket raceway 2.

Die Bewegung des Kolbens 5 wird von dem Zahnradgetriebe 11 gesteuert.The movement of the piston 5 is controlled by the gear transmission 11.

Die Zeichnung zeigt weiters, daß zwei durch den Gehäusemantel 1 verlaufende und in die Mantellaufbahn 2 mündende Ansaug-beziehungsweise Ausstoßkanäle vorgesehen sind, deren Mündungsöffnungen 12, 12' jeweils eine Überströmtasche 120 bzw. 120' aufweisen, die sich als Ausnehmungen über jeweils einen gleich großen Abschnitt (Bogen) der Mantellaufbahn 2 gleichsinnig erstrecken, wobei die Lage und Abmessung der Mündungsöffnungen 12, 12' mit Überströmtaschen 120, 120' so bestimmt ist, daß - im Radialschnitt der Pumpe betrachtet - die in Drehrichtung 13 des Kolbens 5 vorderen Steuerkanten 16, 16' der beiden Mündungsöffnungen 12, 12' mit Uberströmtaschen 120, 120' mit je einem der beiden Simultanpunkte D1, D2 der zweibogigen Trochoide der Mantellaufbahn 2 zusammenfallen, während die Lage der im Drehsinn 13 des Kolbens 5 hinteren Steuerkanten 14, 14' der beiden Mündungsöffnungen 12, 12' mit überströmtaschen 120, 120' so bestimmt ist, daß beispielsweise bei Totpunktstellung des Kolbens 5 in einer Kammer A die vorlaufende Kolbenecke 17 unmittelbar über der vorderen Steuerkante 16' einer der beiden Mündungsöffnungen 12' liegt, während die nachlaufende Kolbenecke 15 unmittelbar über der hinteren Steuerkante 14 der anderen Mündungsöffnung 12 liegt.The drawing further shows that two suction or exhaust ducts running through the casing shell 1 and opening into the shell raceway 2 are provided, the mouth openings 12, 12 'of which each have an overflow pocket 120 or 120', which are each in the form of recesses of the same size Section (arc) of the jacket raceway 2 extend in the same direction, the position and dimension of the orifices 12, 12 'with overflow pockets 120, 120' being determined such that - viewed in the radial section of the pump - the control edges 16, which are front in the direction of rotation 13 of the piston 5, 16 'of the two orifices 12, 12' with overflow pockets 120, 120 'each with one of the two simultaneous points D 1 , D 2 of the double-arched trochoids of the jacket raceway 2 coincide, while the position of the rear control edges 14, 14' in the direction of rotation 13 of the piston 5 of the two orifices 12, 12 'with overflow pockets 120, 120' is determined so that, for example, when the piston 5 is in the dead center position in an egg ner chamber A, the leading piston corner 17 is immediately above the front control edge 16 'of one of the two orifices 12', while the trailing piston corner 15 is immediately above the rear control edge 14 of the other orifice 12.

Für den Antrieb der erfindungsgemäßen Rotationspumpen ergeben sich verschiedene Möglichkeiten. Erfolgt der Einsatz dieser Pumpen außerhalb des menschlichen oder tierischen Körpers, so ist die Antriebseinheit, bestehend aus einem Elektromotor oder einem Elektromotor mit Getriebe meist außerhalb der Rotationspumpe untergebracht und der Antrieb erfolgt über die Exzenterwelle 7.There are various possibilities for driving the rotary pumps according to the invention. If these pumps are used outside the human or animal body, the drive unit, consisting of an electric motor or an electric motor with a gearbox, is usually located outside the rotary pump brought and the drive takes place via the eccentric shaft 7.

Wird die erfindungsgemäße Rotationspumpe jedoch für eine tragbare Antriebseinheit außerhalb eines menschlichen oder tierischen Körpers konzipiert oder sogar in einem menschlichen oder tierischen Körper implantiert, so ist es aufgrund des geringen Bauvolumens sinnvoller, wenn der Elektromotor samt Getriebe im Inneren des Kolbens 5 untergebracht ist, was energiemäßig möglich ist, da die Pumpleistung einer implantierten Membranblutpumpe einiger Watt an Leistung bedarf.However, if the rotary pump according to the invention is designed for a portable drive unit outside a human or animal body or is even implanted in a human or animal body, it is more sensible due to the small construction volume if the electric motor including the gearbox is accommodated inside the piston 5, which is energy-wise is possible because the pump power of an implanted membrane blood pump requires a few watts of power.

Es kann aber auch der Elektromotor im Innern des Kolbens und das Getriebe außerhalb der Pumpe, oder das Getriebe innerhalb des Kolbens und der Elektromotor außerhalb der Pumpe untergebracht sein.However, the electric motor can also be accommodated inside the piston and the gearbox outside the pump, or the gearbox inside the piston and the electric motor outside the pump.

Claims (2)

1. Rotationspumpe für den Antrieb von Membranblutpumpen und zur Förderung gasförmiger und flüssiger Stoffe, in der Art einer Trochoidkreiskolbenpumpe, die bei einer 2 : 3 Übersetzung mit einer zweibogigen trochoidenförmigen Mantellaufbahn (2) und einem auf einem Exzenter (6) einer Exzenterwelle (7) umlaufenden dreieckigen Kolben (5) ausgestattet ist, der mit seinen Ecken mit der Mantellaufbahn (2) in ständig gleitender Berührung steht, dadurch gekennzeichnet, daß zwei durch den Gehäusemantel (1) verlaufende und in die Mantellaufbahn (2) mündende Ansaug- beziehungsweise Ausstoßkanäle vorgesehen sind, deren Mündungsöffnungen (12, 12') jeweils eine Überströmtasche (120, 120') aufweisen, die sich als Ausnehmungen über jeweils einen gleich großen Abschnitt der Mantellaufbahn (2) gleichsinnig erstrecken, wobei die Lage und Abmessung der Mündungsöffnungen (12, 12') mit überströmtaschen (120, 1201) so bestimmt ist, daß - im Radialschnitt der Pumpe betrachtet - die in Drehrichtung (13) des Kolbens (5) vorderen Steuerkanten (16, 16') der beiden Mündungsöffnungen (12, 12') mit Überströmtaschen (120, 120') mit je einem der beiden Simultanpunkte (Dl, D2) der zweibogigen Trochoide der Mantellaufbahn (2)zusammenfallen, während die Lage der im Drehsinn (13) des Kolbens (5) hinteren Steuerkanten (14, 14') der beiden Mündungsöffnungen (12, 12') mit überströmtaschen (120, 120') so bestimmt ist, daß beispielsweise bei Totpunktstellung des Kolbens (5) in einer Kammer (A) die vorlaufende Kolbenecke (17) unmittelbar über der vorderen Steuerkante (16') einer der beiden Mündungsöffnungen (12') liegt, während die nachlaufende Kolbenecke (15) unmittelbar über der hinteren Steuerkante (14) der anderen Mündungsöffnung (12) liegt.1. Rotary pump for driving diaphragm blood pumps and for conveying gaseous and liquid substances, in the manner of a trochoidal rotary piston pump, which with a 2: 3 ratio with a two-armed trochoidal shell raceway (2) and one on an eccentric (6) of an eccentric shaft (7) circumferential triangular piston (5), which is in constant sliding contact with its corners with the jacket raceway (2), characterized in that two through the housing jacket (1) extending and into the jacket raceway (2) opening or discharge channels are provided whose mouth openings (12, 12 ') each have an overflow pocket (120, 120') which extend in the same direction as recesses over a section of the jacket race (2) of the same size, the position and dimensions of the mouth openings (12, 12 ') with overflow pockets (120, 120 1 ) is determined so that - viewed in the radial section of the pump - in the direction of rotation (13) of the Ko (5) front control edges (16, 16 ') of the two orifices (12, 12') with overflow pockets (120, 120 ') each with one of the two simultaneous points (D 1 , D 2 ) of the two-arched trochoids of the jacket career (2) coincide while the position of the rear control edges (14, 14 ') of the two orifices (12, 12') with overflow pockets (120, 120 ') in the direction of rotation (13) of the piston (5) is determined such that, for example, the dead center position of the Piston (5) in a chamber (A) the leading piston corner (17) lies directly above the front control edge (16 ') of one of the two orifices (12'), while the trailing piston corner (15) lies directly above the rear control edge (14) the other mouth opening (12). 2. Rotationspumpe nach Anspruch 1, dadurch gekennzeichnet, daß jede Mündungsöffnung (12, 12') mit überströmtaschen (120, 120') die trochoidenförmige Mantellaufbahn (2) der Breite nach ganz oder zum Teil unterbricht und vorzugsweise jede Mündungsöffnung (12, 12') mit Überströmtasche (120, 120') in bekannter Weise im Bereich des Gehäusemantels (1) zusätzlich in mindestens einer Seitenwand (3, 4) in Form einer Überströmtasche eingesenkt ist.2. Rotary pump according to claim 1, characterized in that each mouth opening (12, 12 ') with over flow pockets (120, 120 ') completely or partially interrupts the trochoidal jacket raceway (2) in width and preferably additionally each mouth opening (12, 12') with overflow pocket (120, 120 ') in a known manner in the area of the housing jacket (1) is sunk in at least one side wall (3, 4) in the form of an overflow pocket.
EP83890083A 1982-05-12 1983-05-11 Rotary pump for delivering gases and liquids, particulary for use as a driving unit for blood diaphragm pumps Expired EP0094379B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT1857/82 1982-05-12
AT185782A AT376885B (en) 1982-05-12 1982-05-12 ROTATIONAL PUMP FOR CONVEYING GASEOUS AND LIQUID SUBSTANCES, ESPECIALLY FOR USE AS A BLOOD AND HEART PUMP AND ARTIFICIAL HEART
AT17183A AT376887B (en) 1983-01-20 1983-01-20 ROTATIONAL PUMP FOR USE AS A BLOOD AND HEART PUMP
AT170/83 1983-01-20

Publications (2)

Publication Number Publication Date
EP0094379A1 true EP0094379A1 (en) 1983-11-16
EP0094379B1 EP0094379B1 (en) 1987-01-28

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Application Number Title Priority Date Filing Date
EP83890083A Expired EP0094379B1 (en) 1982-05-12 1983-05-11 Rotary pump for delivering gases and liquids, particulary for use as a driving unit for blood diaphragm pumps

Country Status (4)

Country Link
US (1) US4594060A (en)
EP (1) EP0094379B1 (en)
CA (1) CA1207189A (en)
DE (1) DE3317223A1 (en)

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CN100407911C (en) * 2003-01-24 2008-08-06 株式会社岛野 Method for producing fishing rod

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US5145333A (en) * 1990-03-01 1992-09-08 The Cleveland Clinic Foundation Fluid motor driven blood pump
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FR2844312B1 (en) 2002-09-05 2006-04-28 Centre Nat Rech Scient ROTATING MACHINE WITH CAPSULISM
US6941103B2 (en) * 2002-10-21 2005-09-06 Eastman Kodak Company Release agent management system with anilox roller
US6926505B2 (en) * 2003-07-23 2005-08-09 Joaseph A. Sbarounis Rotary machine housing with radially mounted sliding vanes
DE102005052623B4 (en) * 2005-11-02 2007-10-11 Seleon Gmbh compressor
US10087758B2 (en) 2013-06-05 2018-10-02 Rotoliptic Technologies Incorporated Rotary machine
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Also Published As

Publication number Publication date
DE3317223A1 (en) 1983-12-22
CA1207189A (en) 1986-07-08
EP0094379B1 (en) 1987-01-28
DE3317223C2 (en) 1988-08-25
US4594060A (en) 1986-06-10

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