EP2016287A1 - Rotary piston machine - Google Patents

Rotary piston machine

Info

Publication number
EP2016287A1
EP2016287A1 EP07722410A EP07722410A EP2016287A1 EP 2016287 A1 EP2016287 A1 EP 2016287A1 EP 07722410 A EP07722410 A EP 07722410A EP 07722410 A EP07722410 A EP 07722410A EP 2016287 A1 EP2016287 A1 EP 2016287A1
Authority
EP
European Patent Office
Prior art keywords
pump head
pump
base housing
rotary piston
piston machine
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.)
Granted
Application number
EP07722410A
Other languages
German (de)
French (fr)
Other versions
EP2016287B1 (en
Inventor
Felix Arnold
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.)
Robert Bosch GmbH
Original Assignee
Cor Pumps and Compressors AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cor Pumps and Compressors AG filed Critical Cor Pumps and Compressors AG
Publication of EP2016287A1 publication Critical patent/EP2016287A1/en
Application granted granted Critical
Publication of EP2016287B1 publication Critical patent/EP2016287B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • 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
    • F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
    • F04C3/06—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees
    • F04C3/08—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C3/085—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing the axes of cooperating members being on the same plane
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • 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
    • F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
    • F04C3/06—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees
    • F04C3/08—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/24—Manufacture essentially without removing material by extrusion
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making

Definitions

  • the invention relates to a method of a rotary piston machine, or a manufacturing method thereof, or a rotary piston machine for performing the method, according to the preamble of the main claim (WO 05/024236 Al), claim 10 or claim 3.
  • the invention is based on the object in a rotary piston engine of the generic type, in particular by overcoming the bias of the art, a -, or manufacturing process, or to develop a special construction, via which such a rotary engine can be supplied to a wide range of uses.
  • the rotors have an interlocking Trochoidenveriereung (cycloid toothing).
  • Trochoidenveriereung cycloid toothing
  • a rotary engine is known (see type WO 05/024236 Al) with the great advantage that the remaining remaining spaces of the pump, d. H. the noxious spaces are very small, however, with respect to the invention, there is a considerable bias in the art of such trochoidal rotary engines, particularly with respect to methods of use, methods of manufacture or construction.
  • An according to claim 3 to be designed rotary piston conveyor with cup-shaped canned to facilitate the replacement of the pump head is an additional thought step, which is unusual because the flowed through from the substrate to be pumped pump head forms by its invention interchangeability no conceptual link to the function of the known gap motor, because for the expert in the known pumps, the can is hermetically separated during operation, the flowing medium, the electrical part of the pump part.
  • the connection between the base housing and the pump head as a Quick coupling formed, which acts on corresponding devices of the base housing and pump head.
  • End surfaces between the base housing and the pump head are that the housing in the contacting area have an associated outer bead or flange and that the housing over these these beads or flanges cross tangential shortening ring are axially clamped together.
  • An embodiment of the invention consists in a manufacturing method in which these plastic parts of the pump head and / or split pot tool are made falling.
  • Such a preparation is particularly advantageous applicable to the trochoid toothed rotors in which rounded teeth run on smooth surfaces with linear working space limiting positive engagement between flanks and tooth combs of the opposing teeth, which accommodates a tool falling manufacturing including the housing parts of the pump head and split pot.
  • Fig. 2 shows the quick-release connection between the base housing and pump head housing in plan view
  • the rotary piston pump As shown in exploded view in Fig. 1, the rotary piston pump according to the invention comprises a base housing 1, with which the pump is anchored correspondingly fixed and in which the electrically controllable coil 2 of an electric motor is arranged.
  • a pump head 3 In the right part of the exploded view, a pump head 3 is shown, which can be closed by a pot-shaped can 4. Between a fiashlike portion 9 of the can 4 and a section 9 of the can 4 facing flat end face 8 of the pump head 3, a ring seal 5 is disposed in a Stirnringnut 6 of the pump head 3.
  • the pump head 3 has for this purpose an annular bead 7, on which the end face 8 is present and which serves to engage a clamping ring 10, on the other hand engages an annular bead 11 of the base housing 1.
  • the clamping ring 10 is open at 12 on one side and by a screw which is tangentially inserted into an opening 13, shortened in its scope.
  • the clamping ring 10 also has conically extending webs 14, so that a shortening of the circumference of the clamping ring 10 and by its engagement with the annular beads 7 and 11 of the pump head 3 and the base housing 1 leads to their clamping together.
  • the pump head 3 receives a power rotor 15 with a permanent magnet 16 in a pot-shaped portion of the can 4, as well as a through the power rotor 15 with driven counter rotor 17 with the pivot bearing 18th
  • Fig. 2 in particular, the clamping ring 10 is shown with its open side 12th
  • the invention is not limited only to canned machines, but also detects rotary piston machines, in which the seal between the exchanged pump head and the base housing is effected by other known means. Decisive is the simple and practical interchangeability of the pump head with separation of the flow medium. All in the description, the following claims and the drawings illustrated features may be essential to the invention both individually and in any combination.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Proposed is an electrically driven rotary piston machine which operates as a rotary piston pump or rotary piston compressor, having a base housing (1) which holds an electric coil (2) and a pump head (3), wherein the pump working space is preferably delimited by a trochoidal toothing of the rotors (15, 17). According to the invention, the pump head (3), which can usually be produced relatively cost-effectively, is designed as a disposable part and therefore has a quick-action connection (7, 10, 11, 12, 14) to the more expensive base housing (1).

Description

COR pumps + compressors AG; 70173 StuttgartCOR pumps + compressors AG; 70173 Stuttgart
DrehkolbenmaschineRotary engine
Stand der TechnikState of the art
Die Erfindung geht aus von einem Verfahren an einer Drehkolbenmaschine, bzw. einem Herstellungsverfahren desselben, bzw. einer Drehkolbenmaschine zur Durchführung der Verfahren, nach der Gattung des Hauptanspruchs (WO 05/024236 Al), des Anspruchs 10 bzw. des Anspruchs 3.The invention relates to a method of a rotary piston machine, or a manufacturing method thereof, or a rotary piston machine for performing the method, according to the preamble of the main claim (WO 05/024236 Al), claim 10 or claim 3.
Ein nicht unerhebliches Problem auf dem gattungsgemäßen Gebiet von Pumpen und Verdichtern entsteht immer dann, wenn es sich bei den zu fördernden Stoffen um giftige, auch zähe bzw. nur unter hohen Temperaturen förderbare Stoffe handelt, die das Reinigen der rotierenden Teile vor hohe Anforderungen stellt, bzw. es überhaupt schwierig oder gar unmöglich macht. Hinzu kommen Entscheidungsprobleme bei Vergleichen der Werte der zu fördernden Stoffe mit dem Wert der Maschine und eventuell dem Austausch derselben. Dies gilt insbesondere beim Einsatz für pharmazeutische Stoffe, aber auch für bestimmte, meist unter hoher Temperatur zu fördernde Kunststoffe. Ein erhebliches Problem ist das Reinigen der Pumpteile. Dies besteht auch darin, dass bei der Verwendung von Reinigungssäuren odgl. die Pumpteile entsprechend resistent sein müssen. Auch hierfür sollten die verbleibenden Resträume der Pumpe, d. h. die schädlichen Räume, so klein wie möglich sein, und sollten wenn möglich gegen Null gehen. In der Praxis versucht man dem zu begegnen, indem für die Drehkolbenmaschinen Edelstahl oder teure resistente Stoffe verwendet werden.A considerable problem in the generic field of pumps and compressors always arises when the substances to be conveyed are toxic substances which are also tough or can only be conveyed at high temperatures, which makes the cleaning of the rotating parts very demanding. make it difficult or even impossible. There are also decision problems in comparing the values of the substances to be conveyed with the value of the machine and possibly the replacement thereof. This is especially true when used for pharmaceutical substances, but also for certain, usually under high temperature to be promoted plastics. A considerable Problem is the cleaning of the pump parts. This is also the case that when using cleaning acids or the like. the pump parts must be resistant accordingly. Again, the remainder of the pump's remaining space, ie the damaging spaces, should be as small as possible, and should approach zero if possible. In practice, attempts are made to counteract this by using stainless steel or expensive resistant materials for the rotary lobes.
Der Erfindung zugrundliegende AufgabeThe problem underlying the invention
Der Erfindung liegt die Aufgabe zugrunde bei einer Drehkolbenmaschine der gattungsgemäßen Art, insbesondere unter Überwindung der Voreingenommenheit der Fachwelt, ein Einsatz-, bzw. Herstellungsverfahren, bzw. eine spezielle Konstruktion zu entwickeln, über die eine derartige Drehkolbenmaschine einem breiten Nutzungsbereich zugeführt werden kann.The invention is based on the object in a rotary piston engine of the generic type, in particular by overcoming the bias of the art, a Einsatz-, or manufacturing process, or to develop a special construction, via which such a rotary engine can be supplied to a wide range of uses.
Die Erfindung und ihre VorteileThe invention and its advantages
Durch die erfindungsgemäßen Verfahren nach den Ansprüchen 1 und 10, bzw. die erfindungsgemäße Drehkolbenmaschine nach Anspruch 3 wird diese Aufgabe gelöst.The inventive method according to claims 1 and 10, or the rotary piston machine according to the invention according to claim 3, this object is achieved.
Es ist zwar an sich bekannt, bei einer elektrisch angetriebenen Pumpe den die vom Strom durchströmte die elektrisch gesteuerte Spule aufnehmenden, meist fest angeordneten aufwendigen Gehäuseteil mittels eines topfförmigen Spaltrohres von dem rotierenden, den Permanentmagneten aufnehmenden Leistungsrotor zu trennen (DE 603 00 780 T2, bzw. AT 28 11 84), wobei es allerdings dort um ein völlig anderes Problem geht, nämlich um das Kühlen elektrischer Teile derartiger Spaltrohrpumpen und nicht, wie bei der Erfindung, um eine kostensparende Gestaltung durch die Kombination eines als Wegwerfteil vorgesehenen "billigen" Pumpenkopfes mit einem aufwendigen Pumpengehäuse, was gegebenenfalls ortsfest ist. Wichtig für die Erfindung ist, dass nach Lösen des Pumpenkopfes vom Grundgehäuse die vom zu fördernden Medium durchströmten Arbeitsräume auf dem Grundgehäuse zugewandten Seite verschlossen sind, sodass beispielsweise Säuren udgl. in dem Wegwerfteil verbleiben und mit diesem entsorgt werden können. Bei den bekannten Spaltrohrmotoren (DE 603 00 780 D2 und AT 28 11 84) taucht lediglich der Spalttopf bei geschlossenem Zustand der Pumpe in die elektrisch gesteuerte Wicklung ein, wobei jedoch das die Stromspule aufnehmende Gehäuse kein Grundgehäuse bildet, so dass bei Entfernen des die elektrisch durchströmte Spule aufnehmenden Teils der Pumpenkopf in Bezug auf die zu fördernden Medien nicht mehr geschlossen ist.Although it is known per se, in an electrically driven pump which flows through the stream the electrically controlled coil receiving, usually fixedly arranged complex housing part by means of a cup-shaped can of the rotating, the permanent magnet receiving power rotor to separate (DE 603 00 780 T2, or AT 28 11 84), although there is a completely different problem, namely the cooling of electrical parts of such canned pumps and not, as in the invention, a cost-saving design by combining a provided as a disposable "cheap" pump head with a complex pump housing, which is optionally stationary. Important for the invention is that after releasing the pump head from the main body, the flow-through from the medium to be pumped working spaces are closed on the base housing side facing, so that, for example acids udgl. remain in the disposable part and can be disposed of with this. In the known canned motor (DE 603 00 780 D2 and AT 28 11 84) immersed only the containment shell in the closed state of the pump in the electrically controlled winding, but wherein the current coil receiving housing forms no base housing, so that when removing the electrically flowed through the coil receiving part of the pump head with respect to the media to be conveyed is no longer closed.
Es ist außerdem bekannt bei einer medizinischen Dosierpumpe für flüssige Medikamente Pumpeneinheit und Motor bzw. die Wirkverbindung zwischen Motor und Pumpe lösbar zu gestalten, um dadurch, soweit es die Pumpe betrifft, eine wegwerfbare Einwegeinheit zu erzielen, die von der teueren Antriebseinheit (Elektromotor) trennbar ist, so dass Letzterer wiederverwendet werden kann (DE 199 16 876 Al). Allerdings handelt es sich hier um eine Schlauchpumpe, bei der das Merkmal, dass der Pumpenkopf als Wegwerfteil ausgebildet ist, bereits entnehmbar ist, wobei jedoch es sich weder um eine Schnelllöseverbindung handelt, abgesehen davon, dass natürlich derartige lediglich durch den Förderschlauch nach außen abgedichtete Pumpen einen sehr engen Einsatzbereich aufweisen und in Bezug auf die Erfindung einer anderen Gattung von Pumpen zuzuordnen ist.It is also known in a medical metering pump for liquid medication pump unit and motor or the operative connection between the motor and pump to make detachable, thereby, as far as the pump, to achieve a disposable disposable unit, which can be separated from the expensive drive unit (electric motor) is, so that the latter can be reused (DE 199 16 876 Al). However, this is a peristaltic pump, in which the feature that the pump head is designed as a disposable part, is already removed, but it is neither a quick-release connection is, apart from the fact that, of course, such only by the delivery hose sealed to the outside pumps have a very narrow range of use and is related to the invention of a different type of pump.
Nach einer vorteilhaften Ausgestaltung der Erfindung weisen die Rotoren eine ineinandergreifende Trochoidenverzahnung (Zykloidenverzahnung) auf. Eine solche Drehkolbenmaschine ist zwar bekannt (siehe Gattung WO 05/024236 Al) mit dem großen Vorteil, dass die verbleibenden Resträume der Pumpe, d. h. die schädlichen Räume, sehr klein sind, wobei jedoch in Bezug auf die Erfindung eine erhebliche Voreingenommenheit der Fachwelt für solche trochoidischen Drehkolbenmaschinen besteht, insbesondere in Bezug auf Nutzungsverfahren, Herstellungsverfahren oder Konstruktion.According to an advantageous embodiment of the invention, the rotors have an interlocking Trochoidenverzahnung (cycloid toothing). Although such a rotary engine is known (see type WO 05/024236 Al) with the great advantage that the remaining remaining spaces of the pump, d. H. the noxious spaces are very small, however, with respect to the invention, there is a considerable bias in the art of such trochoidal rotary engines, particularly with respect to methods of use, methods of manufacture or construction.
Der sehr schwierig zu lösenden Anforderung eines gegen Null gehenden schädlichen Raums werden nur wenig bekannte Drehkolbenmaschinen gerecht (DE AS 10 11 896, NSU; WO 2005/024236 Al, COR), indem die Zähne der rotierenden Teile zykloidenförmig, bzw. trochoidenförmig ausgebildet sind und durch Abrundung der Zähne abdichtend ohne zusätzliche Dichtmittel in die Zahne des anderen rotierenden Teils greifen. Bei diesen bekannten Drehkolbenmaschinen kann der schädliche Raum deshalb bis auf Null reduziert werden.The very difficult to be solved requirement of a zero-going harmful space are only little-known rotary piston machines (DE AS 10 11 896, NSU, WO 2005/024236 Al, COR), in which the teeth of the rotating parts are formed cycloid-shaped, or trochoidenförmig and by rounding the teeth sealingly engage without additional sealant in the teeth of the other rotating part. In these known rotary engines, the harmful space can therefore be reduced to zero.
Eine solche Drehkolbenmaschine mit trochoidenförmig ausgebildetem Rotor weist zwar den Vorteil des geringen schädlichen Raums auf, löst jedoch damit noch nicht oben genanntes Problem, insbesondere bei Förderung von Stoffen unter hohen Temperaturen (Kunststoffen) oder aggressiven Materialien. Bei der Trochoidenverzahnung handelt es sich jedoch im Gegensatz zu den bekannten Pumpen um eine aufwendige Präzisionspumpe, deren Gestaltung als Wegwerfteil für den Fachmann ungewöhnlich ist, so dass hier eine Voreingenommenheit der Fachwelt zu überwinden war. Die sich aus der der Erfindung zugrundliegenden Aufgabe ergebende Lösung, nämlich den aus Trochoidenteilen bestehenden Pumpenkopf als Wegwerfteil auszubilden und diesen mit dem Grundgehäuse deshalb mit einer Schnelllösverbindung zu verbinden, ist für den Fachmann ungewöhnlich, wobei Schnellverbindungen zwischen Motor und speziellen Pumpen in unterschiedlichster Art, wie oben erwähnt, bekannt sind.Although such a rotary engine with trochoidenförmig trained rotor has the advantage of low harmful space, but so does not solve the above problem, especially in the promotion of substances under high temperatures (plastics) or aggressive materials. However, in contrast to the known pumps, trochoidal toothing is a complicated precision pump whose design is unusual as a disposable part for a person skilled in the art, so that a bias in the art was to be overcome here. The resulting from the problem underlying the invention, namely to form the existing Trochoidenteilen pump head as a disposable part and to connect it with the main body therefore with a Schnelllösverbindung, is unusual for the expert, with quick connections between the engine and special pumps in different ways, such as mentioned above, are known.
Eine entsprechend dem Anspruch 3 zu gestaltende Drehkolbenfördermaschine mit topfförmig ausgebildetem Spaltrohr zur Erleichterung des Austausches des Pumpenkopfes ist ein zusätzlicher Gedankenschritt, der deshalb ungewöhnlich ist, weil der vom zu fördernden Substrat durchströmte Pumpenkopf durch seine erfindungsgemäße Austauschbarkeit keine gedankliche Verbindung zur Funktion des bekannten Spaltmotors bildet, da für den Fachmann bei den bekannten Pumpen das Spaltrohr während des Betriebes das strömende Medium den elektrischen Teil vom Pumpenteil hermetisch abtrennen soll.An according to claim 3 to be designed rotary piston conveyor with cup-shaped canned to facilitate the replacement of the pump head is an additional thought step, which is unusual because the flowed through from the substrate to be pumped pump head forms by its invention interchangeability no conceptual link to the function of the known gap motor, because for the expert in the known pumps, the can is hermetically separated during operation, the flowing medium, the electrical part of the pump part.
Nach einer vorteilhaften Ausgestaltung der Erfindung wird somit beim Austausch des Pumpenkopfes als Wegwerfteil das Spaltrohr mit Rotoren und Permanentmagnet aus dem Grundgehäuse herausgezogen, wonach dann das Austauschteil eingesetzt wird. Um den erfindungsgemäßen Austausch des Pumpenkopfes zu erleichtern ist gemäß einer Ausgestaltung der Erfindung die Verbindung zwischen Grundgehäuse und Pumpenkopf als eine Schnellverbindungskupplung ausgebildet, die an entsprechenden Vorrichtungen von Grundgehäuse und Pumpenkopf angreift.According to an advantageous embodiment of the invention, therefore, when replacing the pump head as a disposable part of the can with rotors and permanent magnet is pulled out of the base housing, after which the replacement part is used. In order to facilitate the exchange of the pump head according to the invention, according to one embodiment of the invention, the connection between the base housing and the pump head as a Quick coupling formed, which acts on corresponding devices of the base housing and pump head.
Eine diesbezügliche vorteilhafte Ausgestaltung der Erfindung ist derart, dass sich die Vorrichtung zur Verbindung der Gehäuse vonA related advantageous embodiment of the invention is such that the device for connecting the housing of
Grundgehäuse und Pumpenkopf an den sich berührendenBasic housing and pump head to the touching
Stirnflächen zwischen Grundgehäuse und Pumpenkopf befinden, dass die Gehäuse in dem sich berührenden Bereich einen einander zugeordneten äußeren Wulst oder Flansch aufweisen und dass die Gehäuse über einen diese Wülste oder Flansche übergreifenden, tangential verkürzbaren Ring axial zusammenspannbar sind.End surfaces between the base housing and the pump head are that the housing in the contacting area have an associated outer bead or flange and that the housing over these these beads or flanges cross tangential shortening ring are axially clamped together.
Eine Ausgestaltung der Erfindung besteht in einem Herstellungsverfahren, bei dem diese Kunststoffteile des Pumpenkopfes und/ oder Spalttopfes Werkzeug fallend hergestellt sind. Eine solche Herstellung ist besonders vorteilhaft anwendbar bei den Trochoiden verzahnten Rotoren, bei denen abgerundete Zahne auf glatten Flächen ablaufen mit linienförmigen Arbeitsraum begrenzendem Formschluss zwischen Flanken und Zahnkämmen der einander gegenüberliegenden Zahne, was einer Werkzeug fallenden Herstellung einschließlich der Gehäuseteile des Pumpenkopfes und Spalttopfes entgegenkommt. Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung, den Ansprüchen und der Zeichnung entnehmbar. ZeichnungAn embodiment of the invention consists in a manufacturing method in which these plastic parts of the pump head and / or split pot tool are made falling. Such a preparation is particularly advantageous applicable to the trochoid toothed rotors in which rounded teeth run on smooth surfaces with linear working space limiting positive engagement between flanks and tooth combs of the opposing teeth, which accommodates a tool falling manufacturing including the housing parts of the pump head and split pot. Further advantages and advantageous embodiments of the invention are the following description, the claims and the drawings can be removed. drawing
Ein Ausführungsbeispiel des Gegenstandes der Erfindung ist in der Zeichnung dargestellt.An embodiment of the object of the invention is shown in the drawing.
Es zeigen:Show it:
Fig. 1 eine erfindungsgemäße Drehkolbenförderpumpe in1 is a rotary piston pump according to the invention in
Explosionsdarstellung und im Längsschnitt;Exploded view and in longitudinal section;
Fig. 2 die Schnellschlussverbindung zwischen Grundgehäuse und Pumpenkopfgehäuse in der Draufsicht undFig. 2 shows the quick-release connection between the base housing and pump head housing in plan view and
Fig. 3 die Drehkolbenförderpumpe entsprechend dem SchnittFig. 3, the rotary piston pump according to the section
A aus Fig. 2 in zusammengebautem Zustand.A of Fig. 2 in the assembled state.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Wie in Fig. 1 in Explosionsdarstellung gezeigt, weist die erfindungsgemäße Drehkolbenförderpumpe ein Grundgehäuse 1 auf, mit welchem die Pumpe entsprechend ortsfest verankerbar ist und in welchem die elektrisch steuerbare Spule 2 eines Elektromotors angeordnet ist. Im rechten Teil der Explosionsdarstellung ist ein Pumpenkopf 3 dargestellt, der durch ein topfförmiges Spaltrohr 4 verschließbar ist. Zwischen einem fianschförmigen Abschnitt 9 des Spaltrohres 4 und einer dem Abschnitt 9 des Spaltrohres 4 zugewandten ebenen Stirnfläche 8 des Pumpenkopfes 3 ist eine Ringdichtung 5 in einer Stirnringnut 6 des Pumpenkopfes 3 angeordnet. Der Pumpenkopf 3 weist dafür einen Ringwulst 7 auf, an dem die Stirnfläche 8 vorhanden ist und der zum Eingreifen eines Spannringes 10 dient, der andererseits an einem Ringwulst 11 des Grundgehäuses 1 angreift.As shown in exploded view in Fig. 1, the rotary piston pump according to the invention comprises a base housing 1, with which the pump is anchored correspondingly fixed and in which the electrically controllable coil 2 of an electric motor is arranged. In the right part of the exploded view, a pump head 3 is shown, which can be closed by a pot-shaped can 4. Between a fiashlike portion 9 of the can 4 and a section 9 of the can 4 facing flat end face 8 of the pump head 3, a ring seal 5 is disposed in a Stirnringnut 6 of the pump head 3. The pump head 3 has for this purpose an annular bead 7, on which the end face 8 is present and which serves to engage a clamping ring 10, on the other hand engages an annular bead 11 of the base housing 1.
Der Spannring 10 ist bei 12 einseitig offen und durch eine Schraube, die tangential in eine Öffnung 13 einsetzbar ist, in seinem Umfang verkürzbar. Der Spannring 10 weist außerdem konisch verlaufende Stege 14 auf, so dass eine Verkürzung des Umfangs des Spannrings 10 und durch sein Eingreifen an den Ringwülsten 7 und 11 von Pumpenkopf 3 und Grundgehäuse 1 zu deren Zusammenspannen führt.The clamping ring 10 is open at 12 on one side and by a screw which is tangentially inserted into an opening 13, shortened in its scope. The clamping ring 10 also has conically extending webs 14, so that a shortening of the circumference of the clamping ring 10 and by its engagement with the annular beads 7 and 11 of the pump head 3 and the base housing 1 leads to their clamping together.
Der Pumpenkopf 3 nimmt einen Leistungsrotor 15 mit einem Permanentmagneten 16 in einem topfförmigen Abschnitt des Spaltrohres 4 auf, sowie einen durch den Leistungsrotor 15 mit angetriebenen Gegenrotor 17 mit dessen Drehlager 18.The pump head 3 receives a power rotor 15 with a permanent magnet 16 in a pot-shaped portion of the can 4, as well as a through the power rotor 15 with driven counter rotor 17 with the pivot bearing 18th
In Fig. 2 ist insbesondere der Spannring 10 dargestellt mit seiner offenen Seite 12.In Fig. 2, in particular, the clamping ring 10 is shown with its open side 12th
Bei der in Fig. 3 im Zusammenbau und im Längsschnitt gezeigten Version ist besonders gut erkennbar, dass nach Lösen des Spannringes 10 der Pumpenkopf 3 einschließlich dem vom zu fördernden Medium durchströmten Bereich abtrennenden Spaltrohr 4 in einfacher Art aus dem Grundgehäuse- 1 und der elektrischen Spule 2 herausziehbar ist.In the version shown in Fig. 3 in the assembly and in longitudinal section is particularly easy to see that after loosening the clamping ring 10 of the pump head 3 including the flow-through from the medium to be conveyed area separating tube 4 in a simple manner from the basic housing 1 and the electric coil 2 is pulled out.
Es sei darauf hingewiesen, dass die Erfindung nicht nur auf Spaltrohrmaschinen eingeschränkt ist, sondern auch Drehkolbenmaschinen erfasst, bei denen die Abdichtung zwischen dem auszutauschenden Pumpenkopf und dem Grundgehäuse durch andere bekannte Mittel erfolgt. Maßgebend ist die einfache und praktische Austauschbarkeit des Pumpenkopfes mit Abtrennung des Strömungsmediums. Alle in der Beschreibung, den nachfolgenden Ansprüchen und der Zeichnung dargestellten Merkmale können sowohl einzeln als auch in beliebiger Kombination miteinander erfindungswesentlich sein. It should be noted that the invention is not limited only to canned machines, but also detects rotary piston machines, in which the seal between the exchanged pump head and the base housing is effected by other known means. Decisive is the simple and practical interchangeability of the pump head with separation of the flow medium. All in the description, the following claims and the drawings illustrated features may be essential to the invention both individually and in any combination.
BezugszahlenlisteLIST OF REFERENCE NUMBERS
1 Grundgehäuse1 basic housing
2 Spule2 coil
3 Pumpenkopf3 pump head
4 Spaltrohr4 can
5 Ringdichtung5 ring seal
6 Stirnringnut6 end ring groove
7 Ringwulst von 37 torus of 3
8 Stirnfläche8 face
9 Flanschabschnitt9 flange section
10 Spannring10 clamping ring
11 Ringwulst von 111 ring bulge from 1
12 offene Seite von 1012 open page of 10
13 Öffnung13 opening
14 Stege14 bars
15 Leistungsrotor15 power rotor
16 Permanentmagnet16 permanent magnet
17 Gegenrotor17 counter rotor
18 Drehlager 18 pivot bearings

Claims

Ansprüche claims
1. Verfahren an einer insbesondere elektrisch angetriebenen als Drehkolbenpumpe oder Drehkolbenverdichter arbeitenden Drehkolbenmaschine , mit einem fest anordbaren Grundgehäuse (1) mit elektrisch steuerbaren Spule für den elektrischen Antrieb im Grundgehäuse (1) und mit einem am Grundgehäuse (1) angeordneten und die den Arbeitsraum begrenzenden Rotoren (15, 17) der Drehkolbenmaschine aufnehmenden Pumpenkopf (3), dadurch gekennzeichnet, dass der Pumpenkopf (3) als Wegwerfteil ausgebildet ist, dass zum einfachen Austausch des Pumpenkopfes (3) die Anordnung zur Verbindung zwischen Grundgehäuse (1) und Pumpenkopf (3) eine Schnelllösverbindung (7, 10, 11, 12, 14) aufweist und dass beim Austausch des Pumpenkopfes (3) nach Lösen desselben vom Grundgehäuse (1) die Arbeitsräume im Pumpenkopf (3) auf der dem Pumpengehäuse (1) zugewandten Seite verschlossen (4) sind.1. A method on a particular electrically driven working as rotary lobe pump or rotary compressor rotary piston engine, with a fixedly arranged base housing (1) with electrically controllable coil for the electric drive in the base housing (1) and with a on the base housing (1) arranged and limiting the working space Rotors (15, 17) of the rotary piston machine receiving pump head (3), characterized in that the pump head (3) is designed as a disposable part that for easy replacement of the pump head (3) the arrangement for connection between the base housing (1) and pump head (3 ) has a Schnelllösverbindung (7, 10, 11, 12, 14) and that when replacing the pump head (3) after releasing the same from the base housing (1) the working spaces in the pump head (3) on the pump housing (1) facing side closed ( 4).
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Rotoren eine ineinandergreifende2. The method according to claim 1, characterized in that the rotors an interlocking
Trochoidenverzahnung (Zykloidenverzahnung) aufweisen.Trochoidenverzahnung (cycloid toothing) exhibit.
3. Als Pumpe oder Verdichter arbeitende Drehkolbenmaschine, insbesondere zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, mit einem angetriebenen Trochoiden verzahnten Leistungsrotor (15), mit einem in die Verzahnung eingreifenden, dadurch entsprechend verzahnten Gegenrotor (17), mit einem zwischen den Rotoren angeordneten Arbeitsraum, mit einer Pumpenantriebseinrichtung (2, 16), mit Teile zur Steuerung der Pumpenantriebseinrichtung aufnehmenden Grundgehäuse (1), mit einem die Rotoren (15, 17) axial und radial lagernden Pumpenkopf (3) und mit einer lösbaren Verbindungseinrichtung (10) zwischen Grundgehäuse (1) und Pumpenkopf (3), dadurch gekennzeichnet, dass der Leistungsrotor (15) Teil eines Spaltmotors mit Spaltrohr (4) ist, dass das Spaltrohr (4) mit einem radial verlaufenden Abschnitt (4) zwischen einander zugewandten Seiten von Grundgehäuse (1) und Pumpenkopf (3) verläuft und dass die Pumpenantriebseinrichtung durch das Spaltrohr (4) in im Leistungsrotor (15) angeordneten Magnetteil (16) und in im Grundgehäuse (1) angeordneten Strom durchflossenen Spuhlenteil (2) geteilt ist.3. As a pump or compressor operating rotary piston machine, in particular for carrying out the method according to any one of the preceding claims, with a driven trochoid toothed power rotor (15), with an engaging in the toothing, thereby correspondingly toothed counter rotor (17), with a work space arranged between the rotors, with a pump drive means (2, 16), with parts for controlling the pump drive means receiving basic housing (1), with the rotors (15, 17) axially and radially overlapping pump head (3) and with a releasable connection means (10) between the base housing (1) and pump head (3), characterized in that the power rotor (15) part a gap motor with a can (4) is that the can (4) extends with a radially extending portion (4) between facing sides of the base housing (1) and pump head (3) and that the pump drive means through the can (4) in im Power rotor (15) arranged magnetic part (16) and in the base housing (1) arranged flow through the divisional part (2) is divided.
4. Drehkolbenfördermaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Verbindung zwischen Grundgehäuse (1) und Pumpenkopf (3) als eine Schnellverbindungskupplung (10) ausgebildet ist, die an entsprechenden Vorrichtungen (7, 11) von Grundgehäuse (1) und Pumpenkopf (3) angreift. 4. rotary piston conveyor according to claim 3, characterized in that the connection between the base housing (1) and the pump head (3) as a quick connection coupling (10) is formed on corresponding devices (7, 11) of the base housing (1) and pump head (3 ) attacks.
5. Drehkolbenmaschine nach Anspruch 4, dadurch gekennzeichnet, dass sich die Vorrichtung (7, 11) zur Verbindung von5. Rotary piston machine according to claim 4, characterized in that the device (7, 11) for the connection of
Grundgehäuse und Pumpenkopf im Bereich der sich berührenden Stirnflächen (8) befinden, dass in dem sich berührenden Bereich ein einander zugeordneter äußerer Wulst (7, 11) oder Flansch vorhanden ist und dass diese Wülste (7, 11) oder Flansche über einen übergreifenden, tangential verkürzbaren Ring (10) axial zusammenspannbar sind.The base housing and the pump head are in the area of the contacting end faces (8) that in the contacting area an associated outer bead (7, 11) or flange is present and that these beads (7, 11) or flanges over an overhanging, tangential shortenable ring (10) are axially clamped together.
6. Drehkolbenmaschine nach Anspruch 5, dadurch gekennzeichnet, dass der Ring (10) als ein im Schnitt nach außen gewölbter, im Umfang an einer Stelle (12) offener Spannring ausgebildet ist, mit an der offenen Stelle (12) angeordneten und über eine Schraubvorrichtung miteinander verbundenen Radialstegen (14).6. Rotary piston machine according to claim 5, characterized in that the ring (10) is formed as a curved in section outwardly, in the periphery at one point (12) open clamping ring, arranged at the open point (12) and a screw device interconnected radial webs (14).
7. Drehkolbenmaschine nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass das Spaltrohr (4) zur Aufnahme der Lagerung und des Permanentmagneten (16) des Leistungsrotors (15) topfförmig mit breitem, radial zwischen den Gehäusen eingespannten Flansch (9) ausgebildet ist.7. Rotary piston machine according to one of claims 3 to 6, characterized in that the can (4) for receiving the bearing and the permanent magnet (16) of the power rotor (15) cup-shaped with wide, radially clamped between the housings flange (9) is formed ,
8. Drehkolbenmaschine nach Anspruch 7, dadurch gekennzeichnet, dass zwischen den einander zugewandten Flächen von Spaltrohr (4) und Pumpenkopf (3) eine Dichtung angeordnet ist.8. Rotary piston machine according to claim 7, characterized in that in that a seal is arranged between the facing surfaces of the can (4) and the pump head (3).
9. Drehkolbenmaschine nach Anspruch 8, dadurch gekennzeichnet, dass die Dichtung als Ring ausgebildet in einer9. Rotary piston machine according to claim 8, characterized in that the seal formed as a ring in one
Stirnringnut angeordnet ist und dass die Stirnringnut auf der der dem Flansch (9) zugewandten Seite des Pumpenkopfes angeordnet ist um den gesamten Pumpenkopf nach der Demontage zu verschließen.Stirnringnut is arranged and that the Stirnringnut on which the flange (9) facing side of the pump head is arranged to close the entire pump head after disassembly.
10. Herstellungsverfahren, insbesondere zur Anwendung eines der Ansprüche 3 bis 9, dadurch gekennzeichnet, dass mindestens Leistungsrotor (15) und Gegenrotor (17), bzw. die beim Betrieb der Maschine mit den zu fördernden10. A manufacturing method, in particular for the application of one of claims 3 to 9, characterized in that at least power rotor (15) and counter rotor (17), or in the operation of the machine with the promotional
Stoffen in Berührung kommenden Teile des PumpenkopfesMaterials coming into contact parts of the pump head
(Leistungsrotor 15, Gegenrotor 17, Drehlagerung 18) aus(Power rotor 15, counter rotor 17, pivot bearing 18) off
Kunststoff bestehen und im Spritzgussverfahren hergestellt werden.Made of plastic and manufactured by injection molding.
11. Herstellungsverfahren nach Anspruch 10, dadurch gekennzeichnet, dass diese Kunststoffteile des Pumpenkopfes (3) Werkzeug fallend hergestellt werden. 11. A manufacturing method according to claim 10, characterized in that these plastic parts of the pump head (3) tool are made falling.
EP07722410.3A 2006-05-10 2007-05-10 Rotary piston machine Active EP2016287B1 (en)

Applications Claiming Priority (2)

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DE102006022025 2006-05-10
PCT/DE2007/000861 WO2007128303A1 (en) 2006-05-10 2007-05-10 Rotary piston machine

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KR20090011024A (en) 2009-01-30
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JP5175839B2 (en) 2013-04-03
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BRPI0709777A2 (en) 2011-07-26
US8360748B2 (en) 2013-01-29
WO2007128303B1 (en) 2008-01-31
CN101443554A (en) 2009-05-27

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