WO2012028351A1 - Joint d'étanchéité d'une turbomachine - Google Patents

Joint d'étanchéité d'une turbomachine Download PDF

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Publication number
WO2012028351A1
WO2012028351A1 PCT/EP2011/060516 EP2011060516W WO2012028351A1 WO 2012028351 A1 WO2012028351 A1 WO 2012028351A1 EP 2011060516 W EP2011060516 W EP 2011060516W WO 2012028351 A1 WO2012028351 A1 WO 2012028351A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
webs
housing according
housing
longitudinal direction
Prior art date
Application number
PCT/EP2011/060516
Other languages
German (de)
English (en)
Inventor
Rudolf Tungl
Original Assignee
Ebm-Papst Landshut Gmbh
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 Ebm-Papst Landshut Gmbh filed Critical Ebm-Papst Landshut Gmbh
Publication of WO2012028351A1 publication Critical patent/WO2012028351A1/fr

Links

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a multi-part housing of a turbomachine, in which an upper part is sealingly connectable to a lower part. Furthermore, the invention relates to the use of such a housing in a dishwasher or a condensate pump. State of the art
  • JP 2010-19078 A discloses the connection of the blower housing parts by means of a tongue and groove joint.
  • JP 5076153 A discloses a blower housing seal in the form of a labyrinth seal 5 in which the flow resistance steadily increases due to the plurality of successively arranged labyrinth passages. The escape of medium can not be safely prevented at high internal pressures. Therefore, the parts of the housing were often connected to each other by additional process steps such as gluing, mirror welding, ultrasonic welding or inserting a Diehl, wherein such connection methods connect the parts inextricably.
  • the present invention is directed to turbomachines of all kinds.
  • it is directed, on the one hand, to fan housings for use in dishwashers, in which saturated saturated steam at 70 ° C. is conveyed.
  • the present invention is directed to housing of condensate pumps or the like, which are used for example in tumble driers for conveying the condensate into a collecting container. Again, a secure seal is necessary to prevent leakage.
  • the housing should be simple, inexpensive and with be produced and assembled as few manufacturing steps as possible.
  • a housing for a turbomachine is provided with an upper part and a lower part, wherein the upper part is sealingly connected to the lower part and at least one in the direction of the lower part extending web and at the lower part at least one itself on the upper part in the assembled state of the housing, the at least one web of the upper part abuts the at least one web of the lower part over a predetermined length in the longitudinal direction such that at least one of the webs is elastically bent in the transverse direction, so that at least one sealing surface is formed in the adjacent region.
  • the sealing surface is thus formed by parts of the upper part and parts of the lower part, which extend in such a way that they face each other (longitudinal direction), wherein the lateral contact surface of the parts forms the sealing surface.
  • the term "sealing" means that a predetermined pressure can be present in the interior of the housing of the turbomachine without the conveying medium emerging through the seal or the sealing surface Up to 500 Pascals In the case of condensate delivery in a condensate pump, such an internal pressure is up to 15,000 pascal due to the denser medium
  • the very precise positioning of the upper part advantageously connected detachably to the lower part takes place, for example, via an end face of the lower part
  • the upper part is pushed onto the lower part until the respective webs slide along one another and form the sealing surface, without an undercut being provided for fastening must be
  • Non-cutting training ensures clean and easy demolding during injection molding without forced removal. This is particularly advantageous because undercuts could easily leave residues of cleaner or rinse aid
  • the outer wall of the lower part has an outer web on which a further web of the upper part over a predetermined length in the longitudinal direction is applied such that at least one of the webs is bent elastically in the transverse direction and in the adjacent region, a further sealing surface is formed.
  • the webs of the upper part may be connected via a transverse web in order to ensure a higher elastic resistance.
  • the upper part may have a wrap-around, which engages over the outer web of the lower part, wherein it may be provided that an outer arm of the wrapper is resiliently biased against the outer web and thus a further sealing surface between outer arm and outer web is formed.
  • Snap closure are formed.
  • a hook could be provided on the upper part, which engages in a corresponding recess in the lower part to fix the position of the upper part relative to the lower part.
  • the upper part can be inserted and fixed in the lower part by at least one arranged on the lower part snap hook engages over the upper part in the final assembly position.
  • the upper part and the lower part with small tolerances and an arrangement of the webs to each other, act in the high forces in the area of the sealing surfaces, can even be dispensed with means such as the tension of the components sufficient to ensure a secure fixation.
  • a further sealing surface can be formed in that on the upper part an inner web is formed, which abuts on the web of the lower part over a predetermined length in the longitudinal direction such that at least one of the webs is bent elastically in the transverse direction.
  • the elastic bending and thereby achieved resilient arrangement of the webs is realized by a portion of increased thickness on the webs of the base, which extends in a favorable embodiment in the longitudinal direction over a length which represents a quarter to a third of its total length ,
  • the webs of the upper part are first along a slope ge leads, which lead from the narrower upper portion of the webs of the lower part to the region of increased thickness.
  • the webs of the upper part are first on the webs of the lower part and are bent by merging the upper part with the lower part in the transverse direction.
  • Fig. 1 is a side sectional view of the outer edge region of a housing of a turbomachine in a first embodiment
  • FIG. 2 shows a lateral sectional view of the outer edge region of a housing of a turbomachine in a second embodiment
  • FIG. 3 shows a lateral sectional view of the outer edge region of a housing of a turbomachine in a third embodiment
  • Fig. 4 is a side sectional view of the outer edge portion of a housing of a turbomachine in a fourth embodiment.
  • Fig. 1 shows an inventive housing 1 of a turbomachine with an upper part 2 and a lower part 3 in the lateral cross-section, wherein in each case only a section of the parts is shown.
  • the housing 1 is in Essentially a spiral housing and has an axial inlet and a tangential outlet.
  • a web 4 extends from the upper part 2 in the longitudinal direction to the lower part 3, wherein, in the assembled state shown, a sealing surface 6 is formed with the web 5, which in the present case is simultaneously configured as an outer web 5 '.
  • the sealing surface 6 extends over a predetermined length L along a portion of the web 5 of increased thickness D.
  • the section of increased thickness D extends longitudinally over a length M of the bottom portion of the base 3, which is one quarter of the total length of the web 5 in Longitudinal corresponds.
  • the web 4 is guided during the pushing together of the upper part 2 with the lower part 3 along a slope 14 and thereby bent in the transverse direction, so that an angle with respect to the upper edge of the lower part of greater than 90 ° arises.
  • the web 4 hits the bevel 14 and is elastically bent in the transverse direction during the sliding along the web 5, 5 'due to the thickening in the section of increased thickness D.
  • the bend is minimal and barely depicted.
  • the upper part 2 has a wrap-around 8, which surrounds the web or the outer web 5 ', wherein the outer arm 9 of the wrap-around 8 rests on the outer web 5' on the outside and forms a further sealing surface 6 "The outer arm 9 is likewise provided with a bevel
  • the web 4 and the outer arm 9 allow a double seal in the embodiment according to FIG 15 is used for the exact positioning of the upper and lower parts 2, 3rd
  • Fig. 2 an alternative embodiment is shown, wherein the upper part 2 a first web 4 and a second web 4 ', which extend in the longitudinal direction to the lower part 3.
  • the lower part 3 forms by the outer web 5 'and the web 5 a kind of circumferential channel into which the webs 4, 4' of the upper part 2 protrude.
  • Both the web 5 and the outer web 5 ' have a section of increased thickness D, which extends over a length M in the longitudinal direction, which corresponds in each case to a third of the total length of the respective web.
  • Umgriffen of the outer web 5 is spaced. However, it is also possible to bring the outer arm, as shown in Fig. 1, as an additional sealing surface on the outer web 5 'for concern.
  • FIG. 3 shows a further alternative embodiment in which an inner web 10 is formed on the upper part 2 and bears against the web 5 of the lower part 3 in the longitudinal direction over a predetermined length L "in such a way that the web 5 is elastically bent in the transverse direction is and in the adjacent area, a further sealing surface 6 "'is formed.
  • the wrap-around 8 has on the outside a schematically illustrated fastening means 13 which, for example, can additionally fix the upper part 2 to the lower part 3 as a snap closure.
  • the upper part 2 is in the area of Umgriffe 8 this shaped so that its outer edge is embraced by the trained as a snap hook fastener 13 in the final assembly state and thus fixed.
  • the outer arm 9 of the upper part 2 presses when merging the upper part 2 and lower part 3, the snap hook initially radially outward until the latching takes place as soon as, inter alia, the end face 15 abut each other. Moreover, the characteristics of the web 4 'of the outer web 5' and the respective sealing arrangement agree. tion with those of Figure 1 match.
  • FIG. 4 an embodiment is shown with maximum sealing, can be sealed with the internal pressures of more than 500 Pascal for blower housings or up to 15000 Pascal in condensate pumps.
  • four sealing surfaces 6, 6 ', 6 ", 6"' are provided, each of which adjoins each other by predetermined lengths L, L ', L " Webs 5, 5 ', 4, 4', 10 and the outer arm 9.
  • the outer arm 9 of the surround 8 is arranged to the outer web 5 'such that in the assembled state, the sealing surface 6 "is formed, wherein between the External arm and the outer web 5 'elastic forces act on each other.
  • Quadruple clamping on the sealing surfaces 6, 6 ', 6 ", 6"' enables a clamping connection of the upper part to the lower part 3 without additional fastening means a loosening of the upper part 2 is avoided by the lower part 3.
  • the webs 4, 4 'of the upper part 2 are connected only by the web 7.
  • the webs 4, 4' can be made very thin in spite of the high temperatures in dishwashers in the transverse direction, since the web 7 ensures sufficient support and contact pressure on the webs 5, 5 'of the lower part 3.
  • Each of the embodiments shown forms an undercut-free, sealing of the upper and lower parts 2, 3, wherein the seal is formed exclusively by adjoining parts / webs of the upper and lower parts 2, 3 itself. Forced removal is therefore not required.
  • the invention is not limited in its execution to the embodiments shown above. Rather, a number of variants are conceivable which make use of the illustrated solution even in fundamentally different embodiments and are also within the scope of protection of the invention. Thus, it is possible, for example, in addition to the clamping connection to use a fastening means according to Figure 3 in all other figures. In principle, all disclosed features can be integrated as desired into each of the illustrated exemplary embodiments, as far as this is technically possible. Alternatives such as a kinematic reversal, ie, the formation of the sections of increased thickness D to be arranged on the webs of the upper part and the webs of the lower part to perform accordingly along sliding along, are also covered by the protection.

Abstract

L'invention concerne un carter d'une turbomachine présentant une partie supérieure et une partie inférieure, la partie supérieure pouvant être reliée de manière étanche à la partie inférieure. Au moins une tige s'étendant en direction de la partie inférieure est formée sur la partie supérieure et au moins une tige s'étendant en direction de la partie supérieure est formée sur la partie inférieure. A l'état assemblé, la ou les tiges de la partie supérieure sont en contact avec la ou les tiges de la partie inférieure sur une longueur prédéfinie dans la direction longitudinale, de telle sorte qu'au moins l'une des tiges soit recourbée élastiquement dans la direction transversale et qu'au moins une surface d'étanchéité soit formée dans la zone adjacente.
PCT/EP2011/060516 2010-08-30 2011-06-22 Joint d'étanchéité d'une turbomachine WO2012028351A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010035861 DE102010035861A1 (de) 2010-08-30 2010-08-30 Dichtung einer Strömungsmaschine
DE102010035861.4 2010-08-30

Publications (1)

Publication Number Publication Date
WO2012028351A1 true WO2012028351A1 (fr) 2012-03-08

Family

ID=44583643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/060516 WO2012028351A1 (fr) 2010-08-30 2011-06-22 Joint d'étanchéité d'une turbomachine

Country Status (2)

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DE (1) DE102010035861A1 (fr)
WO (1) WO2012028351A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103047171A (zh) * 2012-12-26 2013-04-17 合肥通用机械研究院 新型全功能浮动节流装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018210634A1 (de) 2018-06-28 2020-01-02 BSH Hausgeräte GmbH Radialgebläse
DE102018125040A1 (de) * 2018-10-10 2020-04-16 HELLA GmbH & Co. KGaA Pumpe, insbesondere für einen Flüssigkeitskreislauf in einem Fahrzeug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414946A1 (fr) * 1989-08-31 1991-03-06 Siemens Aktiengesellschaft Boîtier assemblé en façon étanche composé d'au moins deux parts
JPH0576153A (ja) 1991-09-11 1993-03-26 Matsushita Electric Ind Co Ltd 電動送風機
WO1997048907A1 (fr) * 1996-06-19 1997-12-24 Itt Automotive Electrical Systems, Inc. Moteur de lave-glace et essuie-glace pour vehicule
EP1510380A2 (fr) * 2003-08-26 2005-03-02 Delphi Technologies, Inc. Joint de compression latéral moulé intégralement
DE102006052732A1 (de) * 2005-11-09 2007-05-10 Denso Corp., Kariya Klimatisierungssystem
JP2010019078A (ja) 2008-07-08 2010-01-28 Denso Corp 送風機

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0414946A1 (fr) * 1989-08-31 1991-03-06 Siemens Aktiengesellschaft Boîtier assemblé en façon étanche composé d'au moins deux parts
JPH0576153A (ja) 1991-09-11 1993-03-26 Matsushita Electric Ind Co Ltd 電動送風機
WO1997048907A1 (fr) * 1996-06-19 1997-12-24 Itt Automotive Electrical Systems, Inc. Moteur de lave-glace et essuie-glace pour vehicule
EP1510380A2 (fr) * 2003-08-26 2005-03-02 Delphi Technologies, Inc. Joint de compression latéral moulé intégralement
DE102006052732A1 (de) * 2005-11-09 2007-05-10 Denso Corp., Kariya Klimatisierungssystem
JP2010019078A (ja) 2008-07-08 2010-01-28 Denso Corp 送風機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103047171A (zh) * 2012-12-26 2013-04-17 合肥通用机械研究院 新型全功能浮动节流装置

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