EP1803940A1 - Pompe régénérative - Google Patents

Pompe régénérative Download PDF

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Publication number
EP1803940A1
EP1803940A1 EP06024047A EP06024047A EP1803940A1 EP 1803940 A1 EP1803940 A1 EP 1803940A1 EP 06024047 A EP06024047 A EP 06024047A EP 06024047 A EP06024047 A EP 06024047A EP 1803940 A1 EP1803940 A1 EP 1803940A1
Authority
EP
European Patent Office
Prior art keywords
opening
channel
region
housing
connection
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
EP06024047A
Other languages
German (de)
English (en)
Other versions
EP1803940B1 (fr
Inventor
Dieter Götz
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1803940A1 publication Critical patent/EP1803940A1/fr
Application granted granted Critical
Publication of EP1803940B1 publication Critical patent/EP1803940B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 it can be used for example for conveying combustion air in a vehicle heater.
  • Such a fluid delivery device generally has a ring-like delivery channel in a housing, which receives the medium to be conveyed in a suction region, ie, sucks it, and then discharges this medium in an ejection region. 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, they may have the functionality of the drive motor dangerous losses. Also, thereby the pressure build-up in the region of the conveyor channel is weakened with corresponding impairment of the delivery efficiency.
  • 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 a suction region of the conveyor channel and an outlet opening leads away from an ejection region of the conveyor channel and the annular conveying channel between the ejection region and the suction region is interrupted by an interrupting region, a conveying wheel covering the conveying channel and rotatable about the rotational axis, a drive motor having a driving connection with the conveying wheel and in one
  • a sealing arrangement providing a sealing effect between the drive shaft and the housing, further comprising a first connection channel arrangement in the housing, which connects between the conveying channel and the region of the opening produces, which is located on the side remote 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 on the motor side facing the seal in the opening, a pressure which corresponds approximately to the ambient pressure, thus arises over the seal assembly across a pressure gradient, 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.
  • FIG. 1 shows a fluid conveying device in the form of a side channel blower 10 that can be used, for example, for conveying combustion air for a vehicle heater.
  • 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 can be seen.
  • This has a suction region 32 in 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.
  • 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 area 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. 1 A modification in the region of the first connection channel arrangement 44 is shown in FIG. 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP20060024047 2005-12-27 2006-11-20 Pompe régénérative Expired - Fee Related EP1803940B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510062585 DE102005062585B3 (de) 2005-12-27 2005-12-27 Fluidfördereinrichtung, insbesondere Seitenkanalgebläse

Publications (2)

Publication Number Publication Date
EP1803940A1 true EP1803940A1 (fr) 2007-07-04
EP1803940B1 EP1803940B1 (fr) 2008-09-10

Family

ID=37949676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060024047 Expired - Fee Related EP1803940B1 (fr) 2005-12-27 2006-11-20 Pompe régénérative

Country Status (2)

Country Link
EP (1) EP1803940B1 (fr)
DE (2) DE102005062585B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009059718A1 (fr) * 2007-11-05 2009-05-14 Gardner Denver Deutschland Gmbh Compresseur à canal latéral
CN112400064A (zh) * 2018-04-20 2021-02-23 维克多利有限责任公司 具有轴旁通流体循流口的再生式鼓风机-压缩机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951567A (en) * 1971-12-18 1976-04-20 Ulrich Rohs Side channel compressor
DE19847522C1 (de) * 1998-10-15 1999-11-04 Webasto Thermosysteme Gmbh Ringkanalgebläse
EP1170508A1 (fr) * 2000-06-21 2002-01-09 Varian, Inc. Pompe a effet visqueux
DE102004025104A1 (de) * 2004-05-21 2005-12-22 J. Eberspächer GmbH & Co. KG Gebläse, insbesondere Verbrennungsluftgebläse für ein Fahrzeugheizgerät

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3863775D1 (de) * 1988-12-05 1991-08-22 Siemens Ag Seitenkanalverdichter.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951567A (en) * 1971-12-18 1976-04-20 Ulrich Rohs Side channel compressor
DE19847522C1 (de) * 1998-10-15 1999-11-04 Webasto Thermosysteme Gmbh Ringkanalgebläse
EP1170508A1 (fr) * 2000-06-21 2002-01-09 Varian, Inc. Pompe a effet visqueux
DE102004025104A1 (de) * 2004-05-21 2005-12-22 J. Eberspächer GmbH & Co. KG Gebläse, insbesondere Verbrennungsluftgebläse für ein Fahrzeugheizgerät

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009059718A1 (fr) * 2007-11-05 2009-05-14 Gardner Denver Deutschland Gmbh Compresseur à canal latéral
CN101849110B (zh) * 2007-11-05 2012-11-07 加德纳·丹佛德国股份有限公司 侧通道压缩机
CN112400064A (zh) * 2018-04-20 2021-02-23 维克多利有限责任公司 具有轴旁通流体循流口的再生式鼓风机-压缩机
EP3781818A4 (fr) * 2018-04-20 2022-03-23 Victori, LLC Compresseurs-soufflantes à régénération à évents de recirculation de fluide de dérivation d'arbre
EP4180670A3 (fr) * 2018-04-20 2023-07-19 Victori, LLC Compresseurs-soufflantes à régénération avec purge de fluide de dérivation d'arbre
CN112400064B (zh) * 2018-04-20 2023-08-08 维克多利有限责任公司 具有轴旁通流体循流口的再生式鼓风机-压缩机

Also Published As

Publication number Publication date
EP1803940B1 (fr) 2008-09-10
DE502006001541D1 (de) 2008-10-23
DE102005062585B3 (de) 2007-07-05

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