EP3884169A1 - Hochdruckradialventilator umfassend eine in einer einlassöffnung angeordnete dichtungsanordnung - Google Patents
Hochdruckradialventilator umfassend eine in einer einlassöffnung angeordnete dichtungsanordnungInfo
- Publication number
- EP3884169A1 EP3884169A1 EP19813773.9A EP19813773A EP3884169A1 EP 3884169 A1 EP3884169 A1 EP 3884169A1 EP 19813773 A EP19813773 A EP 19813773A EP 3884169 A1 EP3884169 A1 EP 3884169A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- housing
- inlet opening
- fluid
- sealing
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 82
- 239000012530 fluid Substances 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
-
- 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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- 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
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/55—Seals
- F05D2240/56—Brush seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/55—Seals
- F05D2240/57—Leaf seals
Definitions
- the invention relates to a high-pressure radial fan for increasing the pressure of a compressible fluid with a spiral housing, which has an inlet opening through a housing wall for the inlet of the fluid and an outlet opening for the outlet of the fluid, and with an impeller which is arranged in the spiral housing so as to be rotatable about an axial axis of rotation and has a blading formed from a plurality of rotor blades, the blading in an rotating state of the impeller having an axial suction of the fluid through the inlet opening and a radially and / or tangentially deflected outflow of the fluid through the outlet opening and thus a pressure-increasing delivery of the fluid from one Causes suction side on a pressure side, and with a sealing arrangement formed between the volute and the impeller, which is provided to minimize a pressure loss between the pressure side and the suction side.
- Centrifugal fans are well known and are commonly used to deliver compressible fluids. Typical applications of such centrifugal fans can be found, among other things, in air conditioning, chemical or incineration plants as well as in the cement, paper or glass industry.
- the compressible medium in particular also includes erosive, corrosive, explosive, toxic or dust-containing gases. If the pressure increase of the fluid achieved during the conveyance exceeds a pressure increase ratio of 1.1, it is usually referred to as high-pressure radial fans.
- a generally known high-pressure radial fan has a spiral housing with an inlet opening and an outlet opening extending through a housing wall.
- An impeller is arranged in the spiral housing so as to be rotatable about an axial axis of rotation and is provided with a blading formed from a plurality of moving blades.
- the blading sucks the fluid to be conveyed axially and flows it out in a radially and / or tangentially deflected direction through the outlet opening, as a result of which a pressure-increasing conveyance of the fluid is effected from a suction side to a pressure side.
- the known high-pressure radial fan has a sealing arrangement formed between the spiral housing and the impeller.
- the sealing arrangement is designed in the form of a non-contact labyrinth seal between an axially oriented end face of the impeller and a wall of the spiral housing lying inside the spiral housing.
- the sealing arrangement has a contact sealing arrangement arranged in the region of the inlet opening, which seals an annular gap formed between a boundary of the inlet opening and the impeller and which has a sealing surface arranged on the impeller and at least one sealing element contacting the sealing surface, the Sealing element is releasably attached to an outside of the housing wall.
- the solution according to the invention reliably seals the annular gap formed in the area of the inlet opening between the impeller and the spiral housing with simple means. This counteracts a gap loss and a resulting pressure loss and thus an undesirable pressure equalization from the pressure side to the suction side.
- the solution according to the invention makes it possible, in particular, to dispense with a labyrinth seal between the impeller and the spiral housing that is complex to manufacture and requires comparatively narrow manufacturing tolerances. Since the sealing element of the contact seal arrangement is detachably attached to the outside of the housing wall, there are particular advantages in the manufacture, maintenance and / or repair of the high-pressure radial fan. This, in particular, compared to labyrinth seals between the impeller and the spiral housing known in the prior art, which are arranged in the interior of the spiral housing and are usually only accessible for maintenance and / or repair purposes after the impeller has been removed from the spiral housing.
- the sealing element is easily accessible from the outside due to the releasable attachment to the outside of the housing wall, which significantly facilitates manufacture, maintenance and / or repair.
- the arrangement of the sealing element according to the invention on the outside of the housing wall enables a reduced overall width or depth of the spiral housing. This enables in particular a particularly streamlined design of the flow-effective cross sections of the volute casing.
- the spiral housing has a spiral shape of the flow-effective cross sections, which is basically known as such in the area of the radial fans, and is preferably manufactured in the form of a sheet metal construction which can be produced simply and inexpensively with a plurality of sheet metal parts joined together.
- the inlet opening extends through the housing wall of the volute casing.
- an intake port with a corresponding intake opening can be arranged on the volute casing.
- the impeller can be designed with or without a cover disk that axially covers the blading.
- the impeller can also be designed as a closed design are referred to and is preferred in the present case.
- a design of the impeller without a cover disk can also be referred to as an open design.
- the blades can extend radially straight or - with respect to an intended circumferential direction of rotation of the impeller - can be inclined forwards or backwards or curved accordingly. With regard to the pressure increase to be achieved, backward curved, radially curved and / or forward curved blades have proven to be particularly advantageous in high pressure radial fans.
- the contact seal arrangement counteracts undesired gap losses between the pressure side to the suction side and thus serves to minimize the pressure loss between the outlet opening and the inlet opening of the volute casing.
- the inlet opening is assigned to the suction side of the high-pressure radial fan.
- the outlet opening is assigned to the pressure side of the high pressure radial fan.
- the sealing surface of the contact seal arrangement is arranged on the impeller and therefore rotates around the axial axis of rotation during operation.
- the at least one sealing element is releasably attached to the housing and is thus fixed with respect to the axis of rotation.
- the at least one sealing element is detachably attached, at least indirectly, to the outside of the volute casing.
- the sealing surface is preferably arranged in the region of a radially inner hub and / or an inner circumference of the impeller.
- the sealing surface is preferably of circular design, a normal direction of the sealing surface preferably being oriented radially outward.
- the at least one sealing element is preferably circular.
- the contact seal arrangement can in particular be designed in the form of a stuffing box, a radial shaft seal, a mechanical seal, a brush seal, a shaft lip seal or the like.
- the at least one sealing element can be designed, for example, in the form of a radial shaft sealing ring, a brush element, a lip sealing ring or the like.
- the impeller has a cover plate, by means of which the blading is axially covered on the end face, the sealing surface being arranged on an inlet ring assigned to the cover plate, which protrudes axially in and / or through the inlet opening in the direction of the outside and an inlet opening of the Impeller edged. Accordingly, the impeller in this embodiment of the invention has said closed design.
- the cover plate serves in particular to improve the pressure when pumping the compressible fluid.
- the cover disk has an annular basic shape and covers the rotor blades axially at the end at least in sections.
- the inlet ring bordering the inlet opening can be formed as a functional section of the cover disk in one piece with other sections of the cover disk.
- the inlet ring can be used separately Component manufactured and then be assembled with the cover plate.
- the inlet ring, the cover plate and the inlet opening are preferably oriented coaxially to one another.
- the inlet ring preferably acts as a nozzle and brings about a flow-favorable flow against the blading through the inlet opening.
- the sealing surface is preferably arranged on a radially outer lateral surface of the inlet ring. Starting from an inside of the volute casing, the inlet ring protrudes in the direction of the outside in and / or through the inlet opening of the volute casing. This leads to the formation of an annular gap between the housing wall of the volute casing and the inlet ring.
- the contact seal arrangement serves to seal this annular gap.
- the contact seal arrangement has a seal housing, which is arranged on the outside of the housing wall and has an installation space in which the at least one sealing element is accommodated.
- the seal housing serves to accommodate the at least one sealing element and enables a further simplified construction of the high-pressure radial fan. This is because a separate design of the installation space for receiving the at least one sealing element can be dispensed with directly in the housing wall of the spiral housing. Instead, the installation space is formed on the seal housing.
- the seal housing can be detachably or permanently attached to the outside of the housing wall.
- the seal housing preferably has an annular basic shape and is oriented coaxially with the inlet opening and / or the impeller and / or the inlet opening.
- the seal housing can have a cover, by means of which the installation space can be released and closed. In this way, a further simplified assembly and / or disassembly of the at least one sealing element and thus particularly simple manufacture, maintenance and / or servicing can be achieved.
- the seal housing is releasably flanged onto the outside of the housing wall by means of several fastening elements.
- fastening elements This is a particularly preferred embodiment of the invention.
- screws and / or nuts can be provided as fastening elements.
- the seal housing and the outside of the housing wall can have flange surfaces that are complementary to one another.
- the volute housing has a suction nozzle opening into the inlet opening, which radially and axially engages over the seal housing.
- the suction port is used for a streamlined introduction of the compressible fluid to be pumped through the inlet opening and / or the inlet opening and can be designed, for example, in the form of a nozzle. Since the suction nozzle radially and axially overlaps the seal housing, the seal housing is shielded from undesired external influences. Accordingly, the suction port serves as a cover for the seal housing.
- the suction nozzle is preferably detachably attached to the outside of the housing wall.
- the suction nozzle is particularly preferably detachably flanged onto the outside of the housing wall.
- the suction nozzle has an internal nozzle section, by means of which the seal housing is shielded from a flow of the fluid to be sucked in.
- the nozzle section serves for a flow-favorable flow against the inlet opening.
- the nozzle section serves to cover the seal housing with respect to the flow of the fluid to be sucked in. This in particular prevents any solids contained in the compressible fluid to be conveyed from striking the seal housing and impairing the function of the seal housing and / or the contact seal arrangement.
- the at least one sealing element has at least one lip sealing ring.
- the contact seal arrangement can be designed in the form of a shaft lip seal, the sealing surface arranged on the impeller forming a kind of shaft.
- shaft lip seals are generally known as such in the field of sealing technology and, in the present case, have proven to be particularly advantageous in a surprising manner and to an unexpected extent.
- Fig. 1 shows a schematic side view with an axially directed viewing direction
- FIG. 2 shows the high-pressure radial fan according to FIG. 1 in a schematic sectional illustration along a radial section II-II according to FIG. 1,
- Fig. 5 is a perspective view of the enlarged sectional view
- Fig. 6 is a perspective view of an impeller of the
- Fig. 9 in a side view with an axially oriented viewing direction a seal housing of the high pressure radial fan and
- a high-pressure radial fan 1 according to FIGS. 1 to 5 is provided for the pressure-increasing delivery of a compressible fluid, which is not specified in any more detail, and has a spiral housing 2 and an impeller 3.
- the spiral housing 2 has a spiral configuration known as such with regard to a flow-effective cross section, which is not described in more detail, and is provided with an inlet opening 4 and an outlet opening 5.
- the inlet opening 4 (cf. FIGS. 4, 5) in the present case extends through a housing wall 6 of the spiral housing 2 and serves to inlet the fluid to be conveyed into the spiral housing 2.
- the outlet opening 5 opens into an outlet connection 7 arranged on the spiral housing 2
- the spiral housing 2 is designed as a sheet metal construction.
- the spiral housing 2 has, in particular, a first cover plate 8 forming the housing wall 6, a second cover plate 9 arranged axially spaced therefrom, and a peripheral plate 10 connecting the two cover plates 8, 9 in a fluid-tight manner on an outer circumference.
- the two cover plates 8, 9 have an approximately circular basic shape with an approximately spiral-shaped outer contour and are axially offset from one another and arranged parallel to form a receiving space 11.
- the impeller 3 is arranged in the spiral housing 2 so as to be rotatable about an axial axis of rotation D and has a blading 13 formed from a plurality of rotor blades 12 (FIG. 7).
- the impeller 3 is accommodated in the receiving space 11 of the spiral housing 2 formed between the cover plates 8, 9.
- An inner circumference 14 of the impeller 3 is arranged on an outer circumference 15 of a drive shaft 16 and connected to it in a rotationally fixed manner in a basically known manner.
- the drive shaft 16 is assigned to a drive motor, not shown in the drawing, in the form of an electric motor. Alternatively, the drive shaft can be assigned to an intermediate storage. As can be seen particularly from FIG.
- the rotor blades 12 are each radially curved in the present case.
- the direction of curvature of the rotor blades 12 is opposite to an intended direction of rotation R of the impeller 3, so that one can speak of backward curved rotor blades 12.
- the blading 13 When the impeller 3 rotates in the direction of rotation R, the blading 13 sucks the compressible fluid to be conveyed in the axial direction and thus in the direction of the axis of rotation D through the inlet opening 4 and flows the fluid in a primarily radially deflected and also tangentially deflected direction through the outlet opening 5 Spiral housing 2. In this way, the blading 13 causes a pressure-increasing delivery of the fluid starting from an inlet-side suction side S and an outlet-side pressure side P. Based on FIG. 2, the suction side S is assigned to an area upstream of the inlet opening 4 in the flow direction. For simplicity, the pressure side P is assigned to an outer circumference of the impeller 3.
- a sealing arrangement 17 (FIGS. 4, 5) is provided.
- the sealing arrangement 17 is formed in a manner to be described in more detail between the spiral housing 2 and the impeller 3 and serves to minimize an undesired pressure loss between the pressure side P and the suction side S.
- the sealing arrangement 17 has a contact sealing arrangement 18 arranged in the region of the inlet opening 4.
- the contact seal arrangement 18 seals an annular gap 20 formed between a boundary 19 of the inlet opening 4 and the impeller 3.
- the contact seal arrangement has a sealing surface 21 arranged on the impeller 3, which in particular 6 and 8 can be seen, and at least one sealing element 22 contacting the sealing surface 21.
- the sealing element 22 is releasably attached to an outside 23 of the housing wall 6 in a manner described in more detail. The outside 23 faces away from the installation space 11.
- the contact seal arrangement 18 acts against an undesirable outflow of the fluid starting from a gap 25 formed between the impeller 3 and an inside 24 of the housing wall 6 through the inlet opening 4 in the direction of the outside 23 and thus in the direction of the suction side S. opposite.
- the sealing element 22 is arranged fixed to the housing in the present case. In contrast, when the impeller 3 is rotating, the sealing surface 21 moves together with the impeller 3.
- the impeller 3 has a cover disk 26 in the present case.
- the blading 13 is axially covered on the end face by means of the cover disk 26.
- the sealing surface 21 is arranged on an inlet ring 27 assigned to the cover disk 26.
- the inlet ring 27 protrudes in the direction of the outside 23 of the housing wall 6 in and / or through the inlet opening 4 of the spiral housing 2 and borders an inlet opening 28 of the impeller 3.
- the cover disk 26 extends radially straight and is offset axially parallel to a support disk T. .
- the blades 13 are arranged in the axial direction between the support plate T and the cover plate 26. In this respect, one can also speak of a closed design of the impeller 3, which is basically known as such.
- the sealing surface 21 is arranged on a circumferential surface of the inlet ring 27 that is on the outside in the radial direction, a normal direction of the sealing surface that is not described in detail being oriented radially outwards.
- the inlet ring 27 is manufactured in the form of a separately formed component and is joined to the cover disk 26.
- the inlet ring 27 can be welded to the cover plate 26.
- the cover disk 26 has an annular basic shape, the inlet ring 27 being attached in a fluid-tight manner to an inner circumference of the cover disk 26 which is not specified in any more detail.
- the inlet ring 27 has a flow-effective shape on its inside facing away from the sealing surface 21 in the radial direction and acts as a diffuser.
- the inlet ring 27 in the axial direction - to put it simply - protrudes at least in sections from the spiral housing 2 through the inlet opening 4, the sealing point formed between the sealing surface 21 and the sealing element 22 is easily accessible from the outside and thus starting from the outside 23 Manufacturing, maintenance and / or servicing of the high-pressure radial fan 1 is significantly simplified in a particularly advantageous manner.
- the inlet ring 27 can be designed to be comparatively simple and only in the form of an axially extending pipe socket, which can be attached to the inner circumference of the cover plate 26 with an approximately right-angled transition. Accordingly, the curved, diffuser-like design of the inlet ring 27, which can be seen in particular with reference to FIGS. 4 and 5, is not mandatory.
- the contact seal arrangement 18 in the present case has a seal housing 29.
- the seal housing is arranged on the outside 23 of the housing wall 6 and has an installation space 30 in which the at least one sealing element 22 is received.
- the seal housing 29 has an annular basic shape and is arranged coaxially to the axis of rotation D in the assembled state. In this case, the seal housing 29 is thus arranged coaxially with the inlet opening 4, the inlet opening 28 and with the impeller 3.
- the installation space 30 is complementary to the shape of the sealing element 22 and in the present case has an annular shape.
- the sealing element 22 is fitted into the installation space 30 in a ready-to-use state (cf. FIGS. 4, 5).
- the seal housing 29 has a housing cover 31 and a housing base 32, the housing cover 31 releasably closing the installation space 30 formed on the housing base 32 in the present case.
- the entire seal housing 29 is releasably flanged onto the outside 23 of the housing wall 6 by means of a plurality of fastening elements 33.
- a total of eight nuts are provided as fastening elements 33, which are evenly spaced in the circumferential direction and which are screwed onto the stud bolts (not specified) in the fastened state of the seal housing 29, the latter being firmly connected to the housing wall 6.
- the seal housing can be connected to the housing wall by means of screws.
- the spiral housing 2 has a suction port 34 in the present case.
- the suction port 34 is used for an advantageous supply of the fluid in the direction of the inlet opening 4 and / or the inlet opening 28 and is tubular in the present case.
- the intake port 34 is oriented coaxially with the inlet opening 4 and / or the inlet opening 28 and has a circular cross section.
- the suction nozzle 34 is provided with a flange 35 which, by means of a plurality of fastening elements, which are not described in more detail, on the outside 23 of FIG Housing wall 6 is flanged.
- the suction nozzle 34 overlaps the seal housing 29 both in the radial and in the axial direction.
- the suction port 34 acts as a kind of cover for the seal housing 29.
- the suction nozzle 34 also has an internal nozzle section 36.
- the nozzle section 36 is upstream of the seal housing 29 in the flow direction of the fluid and is fastened to an inner circumference of the suction nozzle 34, which is not specified in any more detail.
- the nozzle section 36 can be welded into the inner circumference of the suction nozzle 34.
- the seal housing 29 is shielded from the flow of the fluid to be sucked in by means of the nozzle section 36.
- the nozzle section 36 here has a streamlined shape.
- the shape of the nozzle section 36 is adapted to the flow-effective design of the inlet ring 27.
- an essentially constant radial course in the axial direction is provided between an inner contour of the nozzle section 36 and an inner contour of the inlet ring 27.
- the sealing element 22 is designed in the form of a lip sealing ring.
- the lip seal 22 is made of an elastomeric material.
- a radially inner tip of the lip sealing ring 22 is directed axially outwards.
- the lip sealing ring 22 is held on its outer circumference in a force-locking manner between the housing cover 31 and the housing base 32.
- annular sealing elements made of coal, PTEE or other materials can be provided, depending on the application condition and / or field of application of the high-pressure radial fan.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019201269.8A DE102019201269A1 (de) | 2019-01-31 | 2019-01-31 | Hochdruckradialventilator |
PCT/EP2019/083084 WO2020156703A1 (de) | 2019-01-31 | 2019-11-29 | Hochdruckradialventilator umfassend eine in einer einlassöffnung angeordnete dichtungsanordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3884169A1 true EP3884169A1 (de) | 2021-09-29 |
EP3884169B1 EP3884169B1 (de) | 2022-06-08 |
Family
ID=68771637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19813773.9A Active EP3884169B1 (de) | 2019-01-31 | 2019-11-29 | Hochdruckradialventilator umfassend eine in einer einlassöffnung angeordnete dichtungsanordnung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3884169B1 (de) |
DE (1) | DE102019201269A1 (de) |
WO (1) | WO2020156703A1 (de) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1979475U (de) * | 1967-11-25 | 1968-02-22 | Zimmermann & Jansen Gmbh | Kreiselpumpe zur foerderung sand- bzw. kieshaltigen wassers. |
DE3225760A1 (de) * | 1981-08-22 | 1983-03-24 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Zweistufiger ventilator |
DE19713712C1 (de) * | 1997-04-03 | 1998-04-16 | Laengerer & Reich Gmbh & Co | Radialventilator, insbesonders als Lüfter für die Kühlanlage eines Kraftfahrzeuges |
US5971704A (en) * | 1997-04-23 | 1999-10-26 | Toyo Pumps North America Corporation | Device for adjusting the running clearance of an impeller |
JP5486943B2 (ja) * | 2010-01-29 | 2014-05-07 | 株式会社東芝 | 電動送風機 |
ITCO20110058A1 (it) * | 2011-12-05 | 2013-06-06 | Nuovo Pignone Spa | Turbomacchina |
CN103511321A (zh) * | 2012-08-03 | 2014-01-15 | 江西耐普矿机新材料股份有限公司 | 吸入口带水封的矿用重型渣浆泵 |
-
2019
- 2019-01-31 DE DE102019201269.8A patent/DE102019201269A1/de not_active Withdrawn
- 2019-11-29 EP EP19813773.9A patent/EP3884169B1/de active Active
- 2019-11-29 WO PCT/EP2019/083084 patent/WO2020156703A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE102019201269A1 (de) | 2020-08-06 |
WO2020156703A1 (de) | 2020-08-06 |
EP3884169B1 (de) | 2022-06-08 |
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