EP1803940B1 - Regenerative pump - Google Patents
Regenerative pump Download PDFInfo
- Publication number
- EP1803940B1 EP1803940B1 EP20060024047 EP06024047A EP1803940B1 EP 1803940 B1 EP1803940 B1 EP 1803940B1 EP 20060024047 EP20060024047 EP 20060024047 EP 06024047 A EP06024047 A EP 06024047A EP 1803940 B1 EP1803940 B1 EP 1803940B1
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- EP
- European Patent Office
- Prior art keywords
- channel
- opening
- conveying
- housing
- region
- 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.)
- Expired - Fee Related
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D23/00—Other rotary non-positive-displacement pumps
- F04D23/008—Regenerative pumps
Definitions
- the present invention relates to a fluid delivery device, in particular a side channel blower, as can be used for example for conveying combustion air in a vehicle heater, as indicated in the preamble of claim 1.
- Such from the DE 1 984 7522 C1 known fluid delivery device generally has in a housing on an annular conveying channel, which receives the medium to be conveyed in a suction, so sucks, and then emits in a discharge region of this medium. Between the suction area and the discharge area, an interrupting area is provided in order to be able to ensure that the pressure gradually built up when the fluid flows along the conveying channel can also be maintained.
- the delivery channel is covered by a delivery wheel, which is driven by a generally fixed to the housing or possibly partially through this housing provided with drive motor for rotation.
- the housing has an opening in which a drive shaft of the drive motor extends.
- a sealing arrangement which serves to prevent escape of the medium to be conveyed through this opening.
- This seal arrangement provides a sealing effect between the drive shaft rotating in operation and the housing to be regarded as stationary. This places considerable demands on this seal arrangement.
- this seal arrangement Given material resistance to the medium to be promoted, it should, of course, be able to seal against it. Due to the speeds involved, this naturally leads to considerable frictional effects, which not only entail energy losses, but can also lead to leaks, especially after a prolonged service life and the occurrence of wear. Such leaks are undesirable not only because, especially when the medium to be delivered is a liquid, it leads to losses possibly endangering the functionality of the drive motor. Also, thereby the pressure build-up in the region of the conveyor channel is weakened with corresponding impairment of the delivery efficiency.
- the DE 10 2004 025 104 A1 discloses a side channel blower in which in the region of the breaker, a flow connection between the region of the inlet opening and the region of the outlet opening is formed.
- a fluid conveying device for example for a vehicle heater
- a fluid conveying device for example for a vehicle heater
- a fluid conveying device for example for a vehicle heater
- a housing with a conveyor channel extending around an axis of rotation, wherein an inlet opening leads to an intake area of the conveyor channel and an outlet opening leads away from an ejection area of the conveyor channel and the annular conveying channel between the ejection area and the suction area is interrupted by a breaker area, a conveying wheel covering the conveying passage and rotatable about the rotating axis, a drive motor having a drive shaft drivingly connected to the conveying wheel and in an opening in the housing surrounded by the conveying passage , wherein in the region of the opening a seal effect between the drive shaft and the housing providing sealing arrangement is provided, characterized by a first dacaskan alan extract in the housing, which establishes a connection between the conveying channel and that portion of the opening, which is located on the side facing away from an engine body side of the seal assembly
- the first connection channel arrangement provides a pressure relief, which is very efficient, especially when the first connection channel arrangement opens into the delivery channel in the region of the intake region.
- This has the consequence that due to the fact that in the suction region of the conveying channel generally prevails a pressure which is lower than the ambient pressure, a correspondingly low pressure prevails in the first connection channel arrangement and thus also in that region of the opening, which at the engine facing away Side of the seal lies. Since it can generally be assumed that prevails at the motor side facing the seal in the opening, a pressure which corresponds approximately to the ambient pressure, thus creating a pressure gradient across the seal assembly, which counteracts escape of the fluid to be delivered through the seal assembly.
- the first connection channel arrangement comprises at least one connection channel open to an end face of the housing.
- the first connection channel arrangement at least one in Housing between the opening and the delivery channel extending connection opening comprises. The provision of such a connection opening has the advantage that structuring of an outer surface of the housing produced thereby can be avoided with the risk of producing unwanted noises.
- a second connection channel arrangement is provided, which connects the region of the opening to the side of the seal arrangement facing the engine body lies, and the environment manufactures.
- the second connection channel arrangement comprises at least one opening opening into the opening.
- the delivery channel is formed on an end face of the blower housing and is open in the axial direction.
- This end face then also lies opposite the delivery wheel in the axial direction, and in particular when the first connection channel arrangement comprises at least one connection channel open to a surface of the housing, then it can likewise be open to this end side.
- a fluid conveying device in the form of a side channel blower 10 which can be used, for example, for conveying combustion air for a vehicle heater, is shown.
- This side channel blower 10 comprises a housing 12 produced by casting, for example, from metal, in which a conveying channel 14 which extends in a ring-like manner around a rotation axis A is formed.
- This delivery channel 14 is open to an axial end face 16 of the housing 12, and this end face 16 is opposite to a rotatable about the axis of rotation A feed wheel 18.
- the feed wheel 18 has one of the ring-like geometry of the conveyor channel 14 corresponding annular recess 20 with provided therein, in the figure, however, not shown conveying blades.
- an electric motor drive motor 24 is provided at the side facing away from the end face 16 back 22 of the housing 12 .
- This has a drive shaft 26 which passes through a central, so preferably concentric with the axis of rotation A opening 28 in the housing 12.
- the drive shaft 26 extends into the region of the feed wheel 18 and is rotatably connected thereto.
- the drive motor 24 comprises a region, generally designated here as the motor body 30, which comprises, for example, the motor housing, the winding region or the armature region also coupled to the drive shaft 26 and the like.
- the motor body 30 comprises, for example, the motor housing, the winding region or the armature region also coupled to the drive shaft 26 and the like.
- this body region 30, that is, for example, parts of the motor housing, are also provided by the housing 12.
- the conveying channel 14 which is open to the front side 16.
- the latter has a suction region 32 into which the medium to be delivered, for example air, can enter or be sucked in via an inlet opening 34.
- This medium then flows at the generated by the rotation of the feed wheel 18 conveying action along the annular conveying channel 14 to a Discharge region 36 of the conveying channel 14, where it exits through an outlet opening 38 from the conveying channel 14 and to the area to be fed, so for example, the burner region of a vehicle heater, can flow.
- an interruption region 35 Between the ejection region 36 and the suction region 32 is an interruption region 35.
- a sealing arrangement generally designated 40, is provided in the region of the opening 28 formed in the housing 12.
- This seal assembly 40 which may also have the function of supporting the drive shaft 16, ensures that the escape of the medium to be conveyed via the formed between the feed wheel 18 and the end 16 of the housing 12 gap-like gap 42 and the opening 28 as far as possible prevented. It should be noted that even with only a small amount of space 42, the opening 28, often inevitably in connection with the delivery channel 14 and thus in the space 42 a certain overpressure compared to the ambient pressure can prevail, which then also in the opening 28 would train. Depending on how strong the sealing effect of the seal assembly 40 is, then the risk of leakage across the seal assembly 40 away is more or less large.
- the drive shaft 26 may have a comparatively high rotational speed in comparison to the case 12 to be regarded as stationary, and thus the sealing arrangement 40 is subject to a correspondingly high mechanical load. Especially after prolonged service life and forcibly occurring wear of such a seal assembly 40 may cause leaks.
- a first connection channel arrangement 44 is provided.
- this comprises a connection opening 46, which establishes a connection between the delivery channel 14 and the opening 28.
- the connection opening 46 opens into the opening 28 in a Area 48 of the same, which is located on the side facing away from the engine body 30, so the end face 16 and the feed wheel 18 facing side 50 of the seal assembly 40.
- the connection opening 46 opens into the delivery channel 14 in the region of the intake region 32, preferably in that peripheral region in which the inlet opening 35 lies.
- connection opening 46 establishes a connection between the region 48 of the opening 28 and the delivery channel 14 in a region in which a lower pressure prevails in the delivery mode than, for example, in the environment, since there is the suction effect, ie a negative pressure is generated in comparison to the ambient pressure.
- a first effect of this first connection channel arrangement 44 is thus that when, for example, due to the presence of the gap-like intermediate space 42 to be conveyed medium enters the region 48 of the opening 28, this medium due to the first connection channel assembly 44, ie the connecting channel 46, produced Connection to a region of low pressure is withdrawn and passes through the connecting channel 46 in the intake region 32 and thus returned to the delivery circuit.
- a second connection channel arrangement 52 is provided in the housing 12. These also include, for example, a connection opening 54, which opens into a region 56 of the opening 28, which is located on the side facing the engine body 30 and thus facing away from the end face 16 and the feed wheel 18 side 58 of the seal assembly 40. Furthermore, the second connecting channel arrangement 52, that is, in the example shown, the connecting opening 54, for example in a radially outer region of the housing 12 to the environment open. The presence of the second connection channel arrangement 52 thus forcibly ensures that in the region 56 of the opening 28, a pressure prevails which corresponds approximately to the prevailing outside of the side channel blower 10 ambient pressure, regardless of whether or how much the engine body 30 to in capable of that Seal opening 28.
- Another significant advantage of this embodiment is that much cheaper and simpler seals can be used, since the risk of escape of medium to be conveyed through the opening 28 can be effectively excluded. This is particularly advantageous if such a seal assembly is to take over the storage function or combined with a bearing assembly or integrated into it.
- FIG Fig. 2 A modification in the region of the first connection channel arrangement 44 is shown in FIG Fig. 2 shown. It can be seen here the previously mentioned housing 12, in which the first connection channel arrangement 44 now comprises an open to the end face 16 connecting channel 60. This also flows into the intake region 32 of the delivery channel 14 and thus provides a connection between the region 48 of the opening 28 and this intake region 32. In principle, therefore, the same functionality can be obtained here as has already been described above, wherein the provision of the first connection channel arrangement 44 with the connection channel 60 open to the end side 16 can be realized more easily, particularly when produced in a casting method.
- first connection channel arrangement 44 and / or the second connection channel arrangement 52 may comprise more than one connection channel or a connection opening.
- the area of the mouth of the first connection channel arrangement 44 can be varied in the delivery channel 14 in comparison to the illustrated.
- the connection with the conveying channel 14 is still in a range in which the prevailing pressure is below the example prevailing in the region 56 of the opening 28 pressure. Any such region or longitudinal section of the delivery channel 14 is still interpreted within the meaning of the present invention as the region associated with the intake region 32.
- the flow cross-section of the respective connecting channel arrangements 44, 52 and, of course, the inlet opening 34 can be adapted to the desired pressure conditions to be set.
- the second connection channel arrangement 52 may alternatively or in addition to the illustrated connection opening, the motor body 30 itself may include insofar as this flat is not flow sealed, but creates a flow connection between the region 56 of the opening 28 and the environment.
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die vorliegende Erfindung betrifft eine Fluidfördereinrichtung, insbesondere ein Seitenkanalgebläse, wie es beispielsweise zum Fördern von Verbrennungsluft in einem Fahrzeugheizgerät eingesetzt werden kann, wie sie im Oberbegriff des Anspruchs 1 angegeben ist.The present invention relates to a fluid delivery device, in particular a side channel blower, as can be used for example for conveying combustion air in a vehicle heater, as indicated in the preamble of claim 1.
Eine derartige aus der
Als hier einsetzbare Dichtungsanordnungen sind verschiedene konstruktive Ausführungen bekannt. So können insbesondere dann, wenn Flüssigkeiten zu fördern sind, Wellendichtringe, Gleitringrichtungen oder auch Wälzkörperlager mit Dichtscheiben verwendet werden. In diesem Zusammenhang ist darauf hinzuweisen, dass selbstverständlich eine derartige Dichtungsanordnung auch die Funktionalität der Lagerung und somit Abstützung der Antriebswelle übernehmen kann, so dass eine sowohl die Lagerungsfunktion als auch die Dichtungsfunktion übernehmende Baugruppe hier eingesetzt werden kann. Um bei derartigen Anordnungen den auftretenden Verschleiß zu mindern, ist es bekannt, Schmiermittel bereitzustellen bzw. das zu fördernde fllüssige Medium als Schmiermittel zu nutzen. Ist das zu fördernde Medium Gas, so kommen beispielsweise auch Labyrinth-Dichtungen zum Einsatz, die weniger mit dem Problem des Verschleißes, als dem Problem von Druckleckagen behaftet sind.As here usable seal assemblies various structural designs are known. Thus, in particular, when liquids are to be promoted, shaft seals, mechanical directions or Wälzkörperlager be used with gaskets. In this context, it should be noted that, of course, such a sealing arrangement can also take over the functionality of the bearing and thus support the drive shaft, so that a both the storage function and the sealing function accepting module can be used here. In order to reduce the wear occurring in such arrangements, it is known to provide lubricant or to use the liquid medium to be pumped as a lubricant. If the medium to be pumped gas, so for example, labyrinth seals are used, which are less subject to the problem of wear, as the problem of pressure leaks.
Die
Es ist die Aufgabe der vorliegenden Erfindung, eine Fluidfördereinrichtung, insbesondere Seitenkanalgebläse, bereitzustellen, bei welcher die im Betrieb auftretenden Leckagen oder Druckverluste vermindert werden können.It is the object of the present invention to provide a fluid delivery device, in particular side channel blower, in which the leaks or pressure losses occurring during operation can be reduced.
Erfindungsgemäß wird diese Aufgabe gelöst durch eine Fluidfördereinrichtung, insbesondere Seitenkanalgebläse, beispielsweise für ein Fahrzeugheizgerät, umfassend ein Gehäuse mit einem um eine Drehachse sich ringartig erstreckenden Förderkanal, wobei eine Einlassöffnung zu einem Ansaugbereich des Förderkanals hin führt und eine Auslassöffnung von einem Ausstoßbereich des Förderkanals weg führt und der ringartige Förderkanal zwischen dem Ausstoßbereich und dem Ansaugbereich durch einen Unterbrecherbereich unterbrochen ist, ein den Förderkanal überdeckendes und um die Drehachse drehbares Förderrad, einen Antriebsmotor mit einer mit dem Förderrad in Antriebsverbindung stehenden und in einer von dem Förderkanal umgebenen Öffnung in dem Gehäuse verlaufenden Antriebswelle, wobei im Bereich der Öffnung eine eine Dichtungswirkung zwischen der Antriebswelle und dem Gehäuse bereitstellende Dichtungsanordnung vorgesehen ist, gekennzeichnet durch eine erste Verbindungskanalanordnung in dem Gehäuse, welche eine Verbindung zwischen dem Förderkanal und demjenigen Bereich der Öffnung herstellt, der an der von einem Motorkörper abgewandten Seite der Dichtungsanordnung liegt.According to the invention, this object is achieved by a fluid conveying device, in particular a side channel blower, for example for a vehicle heater comprising a housing with a conveyor channel extending around an axis of rotation, wherein an inlet opening leads to an intake area of the conveyor channel and an outlet opening leads away from an ejection area of the conveyor channel and the annular conveying channel between the ejection area and the suction area is interrupted by a breaker area, a conveying wheel covering the conveying passage and rotatable about the rotating axis, a drive motor having a drive shaft drivingly connected to the conveying wheel and in an opening in the housing surrounded by the conveying passage , wherein in the region of the opening a seal effect between the drive shaft and the housing providing sealing arrangement is provided, characterized by a first Verbindungskan alanordnung in the housing, which establishes a connection between the conveying channel and that portion of the opening, which is located on the side facing away from an engine body side of the seal assembly.
Bei der erfindungsgemäßen Fluidfördereinrichtung wird durch die erste Verbindungskanalanordnung dafür gesorgt, dass in dem an der motorabgewandten Seite der Dichtungsanordnung liegenden Bereich der Öffnung der Aufbau eines Überdrucks bzw. das Ansammeln von Leckagen weitgehend vermieden wird. Die erste Verbindungskanalanordnung stellt also eine Druckentlastung bereit, die besonders dann sehr effizient ist, wenn die erste Verbindungskanalanordnung in den Förderkanal im Bereich des Ansaugbereichs einmündet. Dies hat nämlich zur Folge, dass aufgrund der Tatsache, dass im Ansaugbereich des Förderkanals allgemein ein Druck vorherrscht, der niedriger ist als der Umgebungsdruck, ein entsprechend niedriger Druck in der ersten Verbindungskanalanordnung und somit auch in demjenigen Bereich der Öffnung vorherrscht, der an der motorabgewandten Seite der Dichtung liegt. Da allgemein unterstellt werden kann, dass an der motorzugewandten Seite der Dichtung in der Öffnung ein Druck vorherrscht, der näherungsweise dem Umgebungsdruck entspricht, entsteht somit über die Dichtungsanordnung hinweg ein Druckgefälle, welches einem Entweichen des zu fördernden Fluids über die Dichtungsanordnung hinweg entgegenwirkt.In the case of the fluid delivery device according to the invention, it is ensured by the first connection channel arrangement that, in the region of the opening lying on the motor side of the seal arrangement, the build-up of an overpressure or the accumulation of leaks is largely avoided. The first connection channel arrangement thus provides a pressure relief, which is very efficient, especially when the first connection channel arrangement opens into the delivery channel in the region of the intake region. This has the consequence that due to the fact that in the suction region of the conveying channel generally prevails a pressure which is lower than the ambient pressure, a correspondingly low pressure prevails in the first connection channel arrangement and thus also in that region of the opening, which at the engine facing away Side of the seal lies. Since it can generally be assumed that prevails at the motor side facing the seal in the opening, a pressure which corresponds approximately to the ambient pressure, thus creating a pressure gradient across the seal assembly, which counteracts escape of the fluid to be delivered through the seal assembly.
Bei einer baulich besonders einfach zu realisierenden, gleichwohl jedoch sehr effektiven Ausgestaltungsform kann vorgesehen sein, dass die erste Verbindungskanalanordnung wenigstens einen zu einer Stirnseite des Gehäuses offenen Verbindungskanal umfasst. Alternativ oder zusätzlich ist es möglich, dass die erste Verbindungskanalanordnung wenigstens eine im Gehäuse zwischen der Öffnung und dem Förderkanal verlaufende Verbindungsöffnung umfasst. Das Bereitstellen einer derartigen Verbindungsöffnung hat den Vorteil, dass eine dadurch erzeugte Strukturierung einer Außenoberfläche des Gehäuses mit der Gefahr der Erzeugung ungewünschter Geräusche vermieden werden kann.In the case of an embodiment that is structurally particularly easy to implement but nevertheless very effective, it can be provided that the first connection channel arrangement comprises at least one connection channel open to an end face of the housing. Alternatively or additionally, it is possible that the first connection channel arrangement at least one in Housing between the opening and the delivery channel extending connection opening comprises. The provision of such a connection opening has the advantage that structuring of an outer surface of the housing produced thereby can be avoided with the risk of producing unwanted noises.
Um den vorangehend angesprochenen Effekt mit einer dem Entweichen von Fluid entgegenwirkenden Druckdifferenz über die Dichtungsanordnung hinweg definiert sicherstellen zu können, wird vorgeschlagen, dass eine zweite Verbindungskanalanordnung vorgesehen ist, welche eine Verbindung zwischen demjenigen Bereich der Öffnung, die an der dem Motorkörper zugewandten Seite der Dichtungsanordnung liegt, und der Umgebung herstellt.In order to be able to ensure the above-mentioned effect with a pressure difference counteracting the escape of fluid across the seal arrangement, it is proposed that a second connection channel arrangement is provided, which connects the region of the opening to the side of the seal arrangement facing the engine body lies, and the environment manufactures.
Auch hier ist es möglich, dass die zweite Verbindungskanalanordnung wenigstens eine in die Öffnung einmündende Verbindungsöffnung umfasst.Again, it is possible that the second connection channel arrangement comprises at least one opening opening into the opening.
Insbesondere bei Ausgestaltung als Seitenkanalgebläse kann vorgesehen sein, dass der Förderkanal an einer Stirnseite des Gebläsegehäuses ausgebildet ist und in axialer Richtung offen ist. Dieser Stirnseite liegt dann auch das Förderrad in axialer Richtung gegenüber, und insbesondere dann, wenn die erste Verbindungskanalanordnung wenigstens einen zu einer Oberfläche des Gehäuses offenen Verbindungskanal umfasst, kann dieser dann ebenfalls zu dieser Stirnseite offen sein.In particular, in the embodiment as a side channel blower can be provided that the delivery channel is formed on an end face of the blower housing and is open in the axial direction. This end face then also lies opposite the delivery wheel in the axial direction, and in particular when the first connection channel arrangement comprises at least one connection channel open to a surface of the housing, then it can likewise be open to this end side.
Die vorliegende Erfindung wird nachfolgend mit Bezug auf die beiliegenden Figuren detailliert beschrieben. Es zeigt:
- Fig. 1
- eine vereinfachte Axialschnittansicht einer erfindungsgemäß aufgebauten Fluidfördereinrichtung;
- Fig. 2
- eine perspektivische Ansicht eines Gehäuses einer erfindungsgemäßen Fluidfördereinrichtung mit alternativer Ausgestaltung der ersten Verbindungskanalanordnung.
- Fig. 1
- a simplified axial sectional view of a fluid delivery device constructed according to the invention;
- Fig. 2
- a perspective view of a housing of a fluid conveying device according to the invention with an alternative embodiment of the first connection channel arrangement.
In der
Bei dem in
Wieder zurückkehrend zur
Um dem entgegenzuwirken, ist bei dem in
Man erkennt weiterhin, dass in dem Gehäuse 12 eine zweite Verbindungskanalanordnung 52 vorgesehen ist. Auch diese umfasst beispielsweise eine Verbindungsöffnung 54, die in einen Bereich 56 der Öffnung 28 einmündet, der an der dem Motorkörper 30 zugewandten und somit von der Stirnseite 16 bzw. dem Förderrad 18 abgewandten Seite 58 der Dichtungsanordnung 40 liegt. Weiterhin ist die zweite Verbindungskanalanordnung 52, also im dargestellten Beispiel die Verbindungsöffnung 54 beispielsweise in einem radial außen liegenden Bereich des Gehäuses 12 zur Umgebung hin offen. Durch das Vorhandensein der zweiten Verbindungskanalanordnung 52 wird also zwangsweise dafür gesorgt, dass im Bereich 56 der Öffnung 28 ein Druck vorherrscht, der näherungsweise dem außerhalb des Seitenkanalgebläses 10 vorherrschenden Umgebungsdruck entspricht, und zwar unabhängig davon, ob bzw. wie stark der Motorkörper 30 dazu in der Lage ist, die Öffnung 28 abzudichten.It can further be seen that a second
Unter Berücksichtigung bzw. in Kombination mit dem vorangehend beschriebenen Effekt der ersten Verbindungskanalanordnung 44, also dem Erzeugen eines im Vergleich zur Umgebung niedrigeren Druckes im Bereich 48 der Öffnung 28 wird somit zwangsweise dafür gesorgt, dass über die Dichtungsanordnung 40 hinweg ein Druckgefälle entsteht, bei dem auf der Seite 58 der Dichtungsanordnung 40 ein höherer Druck herrscht, als auf der Seite 50. Eine über die Dichtungsanordnung 40 hinweg mögliche Leckage, vorhanden durch die Bauart der Dichtungsanordnung 40 oder/und induziert durch im Betrieb auftretenden Verschleiß, kann somit nicht zur Folge haben, das Fluid aus dem Bereich 48 der Öffnung 28 in den Bereich 56 der Öffnung 28 gelangt. Vielmehr wird sich bei derartiger Durchlässigkeit der Dichtungsanordnung 40 zwangsweise eine Strömung vom Bereich 56 in den Bereich 48 und über die erste Verbindungskanalanordnung 44 in den Ansaugbereich 32 des Förderkanals 14 einstellen. Insbesondere dann, wenn ein derartiger Aufbau zum Fördern von Luft eingesetzt wird, hat dies zur Folge, dass eine möglicherweise auftretende Undichtigkeit im Bereich der Dichtungsanordnung 40 keinerlei Beeinträchtigung der Fördereffizienz zur Folge hat. Diese Undichtigkeit hat lediglich die Konsequenz, dass ein Teil der in den Ansaugbereich 32 des Förderkanals 14 gelangenden Luft nicht über die Eintrittsöffnung 34 strömt, sondern über die zweite Verbindungskanalanordnung 52, die Bereiche 56 und 48 der Öffnung 28 und die erste Verbindungskanalanordnung 44 in den Ansaugbereich 32 einströmt. Die Gesamtmenge der einströmenden Luft kann jedoch konstant gehalten werden.Taking into account or in combination with the above-described effect of the first
Ein weiterer wesentlicher Vorteil dieser Ausgestaltung ist, dass wesentlich kostengünstigere und einfacher aufgebaute Dichtungen verwendet werden können, da die Gefahr des Entweichens von zu förderndem Medium über die Öffnung 28 faktisch ausgeschlossen werden kann. Dies ist insbesondere dann von Vorteil, wenn eine derartige Dichtungsanordnung auch die Lagerungsfunktion übernehmen soll oder mit einer Lageranordnung kombiniert oder in diese integriert werden soll.Another significant advantage of this embodiment is that much cheaper and simpler seals can be used, since the risk of escape of medium to be conveyed through the
Eine Abwandlung im Bereich der ersten Verbindungskanalanordnung 44 ist in
Es ist selbstverständlich, dass die Prinzipien der vorliegenden Erfindung in anderer Art und Weise ausgeführt sein können, als vorangehend beschrieben. So kann beispielsweise die erste Verbindungskanalanordnung 44 oder/und die zweite Verbindungskanalanordnung 52 mehr als einen Verbindungskanal oder eine Verbindungsöffnung umfassen. Auch kann der Bereich der Einmündung der ersten Verbindungskanalanordnung 44 in den Förderkanal 14 im Vergleich zu den dargestellten variiert werden. Von Bedeutung oder besonderem Vorteil ist jedoch, dass unter Berücksichtigung des Druckaufbaus entlang des Förderkanals 14 die Verbindung mit dem Förderkanal 14 noch in einen Bereich erfolgt, in dem der vorherrschende Druck unter dem beispielsweise im Bereich 56 der Öffnung 28 vorherrschenden Druck liegt. Jeder derartige Bereich oder Längenabschnitt des Förderkanals 14 wird im Sinne der vorliegenden Erfindung noch als dem Ansaugbereich 32 zugeordneter Bereich interpretiert. Es ist selbstverständlich, dass der Strömungsquerschnitt der jeweiligen Verbindungskanalanordnungen 44, 52 und selbstverständlich auch der Eintrittsöffnung 34 auf die gewünschten einzustellenden Druckverhältnisse abgestimmt sein kann. Weiterhin ist es selbstverständlich möglich, dass die zweite Verbindungskanalanordnung 52 alternativ oder zusätzlich zu der dargestellten Verbindungsöffnung den Motorkörper 30 selbst insofern umfassen kann, als dieser eben nicht strömungsdicht abgekapselt ist, sondern eine Strömungsverbindung zwischen dem Bereich 56 der Öffnung 28 und der Umgebung herstellt.It is to be understood that the principles of the present invention may be practiced otherwise than as previously described. For example, the first
Claims (7)
- A fluid-conveying device, in particular a side-channel blower, for example for a vehicle heating appliance, comprising a housing (12) with a conveying channel (14) extending annularly around an axis of rotation (A), wherein an inlet opening (34) leads to an intake zone (32) of the conveying channel (14) and an outlet opening (38) leads away from a discharge zone (36) of the conveying channel (14) and the annular conveying channel (14) is interrupted between the discharge zone (36) and the intake zone (32) by an interruption area (35), an impeller (18) which overlaps the conveying channel (14) and which can rotate about the axis of rotation (A), a drive motor (24) with a drive shaft (26) which is in drive connection with the impeller (18) and which extends in an opening (28) in the housing (12) surrounded by the conveying channel (14), wherein in the vicinity of the opening (28) there is provided a sealing assembly (40) which provides a sealing action between the drive shaft (26) and the housing (12), characterised by a first connecting channel assembly (44) in the housing (12), which establishes a connection between the conveying channel (14) and the area (48) of the opening (28), which is situated on the side (50) of the sealing assembly (40) remote from the motor body (30) .
- A fluid-conveying device according to Claim 1, characterised in that the first connecting channel assembly (44) discharges into the conveying channel (14) in the vicinity of the intake zone (32).
- A fluid-conveying device according to Claim 1 or 2, characterised in that the first connecting channel assembly (44) comprises at least one connecting channel (60) open to one end face (16) of the housing (12).
- A fluid-conveying device according to any one of Claims 1 to 3, characterised in that the first connecting channel assembly (44) comprises at least one connecting opening (46) extending in the housing (12) between the opening (28) and the conveying channel (14).
- A fluid-conveying device according to any one of Claims 1 to 4, characterised in that a second connecting channel assembly (52) is provided, which establishes a connection between that area (56) of the opening (28), which is situated on the side (58) of the sealing assembly (40) facing the motor body (30), and the environment.
- A fluid-conveying device according to Claim 5, characterised in that the second connecting channel assembly (52) comprises at least one connecting opening (54) discharging into the opening (28).
- A fluid-conveying device according to any one of Claims 1 to 6, characterised in that the conveying channel (14) is formed on one end face (16) of the blower housing (16) and is open in axial direction.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510062585 DE102005062585B3 (en) | 2005-12-27 | 2005-12-27 | Fluid delivery device, in particular side channel blower |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1803940A1 EP1803940A1 (en) | 2007-07-04 |
EP1803940B1 true EP1803940B1 (en) | 2008-09-10 |
Family
ID=37949676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060024047 Expired - Fee Related EP1803940B1 (en) | 2005-12-27 | 2006-11-20 | Regenerative pump |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1803940B1 (en) |
DE (2) | DE102005062585B3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007053017A1 (en) * | 2007-11-05 | 2009-05-07 | Gardner Denver Deutschland Gmbh | Side Channel Blowers |
WO2019204833A1 (en) * | 2018-04-20 | 2019-10-24 | Victori, Llc | Regenerative blowers-compressors with shaft bypass fluid re-vents |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3951567A (en) * | 1971-12-18 | 1976-04-20 | Ulrich Rohs | Side channel compressor |
DE3863775D1 (en) * | 1988-12-05 | 1991-08-22 | Siemens Ag | SIDE CHANNEL COMPRESSORS. |
DE19847522C1 (en) * | 1998-10-15 | 1999-11-04 | Webasto Thermosysteme Gmbh | Ring channel blower for vehicle heating air |
US6394747B1 (en) * | 2000-06-21 | 2002-05-28 | Varian, Inc. | Molecular drag vacuum pumps |
DE102004025104A1 (en) * | 2004-05-21 | 2005-12-22 | J. Eberspächer GmbH & Co. KG | Blower e.g. for vehicle heater, has housing and over axis of rotation ring-like extending channel is provided within housing and wheel is swivellingly carried at housing and channel covered around axis of rotation of wheel |
-
2005
- 2005-12-27 DE DE200510062585 patent/DE102005062585B3/en not_active Expired - Fee Related
-
2006
- 2006-11-20 EP EP20060024047 patent/EP1803940B1/en not_active Expired - Fee Related
- 2006-11-20 DE DE200650001541 patent/DE502006001541D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP1803940A1 (en) | 2007-07-04 |
DE502006001541D1 (en) | 2008-10-23 |
DE102005062585B3 (en) | 2007-07-05 |
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