WO2014064284A1 - Lüfter mit einem lüfterrad - Google Patents
Lüfter mit einem lüfterrad Download PDFInfo
- Publication number
- WO2014064284A1 WO2014064284A1 PCT/EP2013/072460 EP2013072460W WO2014064284A1 WO 2014064284 A1 WO2014064284 A1 WO 2014064284A1 EP 2013072460 W EP2013072460 W EP 2013072460W WO 2014064284 A1 WO2014064284 A1 WO 2014064284A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blades
- region
- fan
- fan according
- axial
- Prior art date
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Definitions
- the invention relates to a fan with a fan.
- a fan has a fan wheel, which is filled with blades, a drive motor and preferably a housing with the storage and flow guidance.
- the rotating vanes are designed to change the direction of the flowing working fluid (e.g., air or other gas), thereby supplying pressure and velocity energy.
- Fan wheel is also referred to as an impeller.
- Axial fans have a fan that resembles a propeller.
- the flow through the fan is largely parallel to the axis of rotation, ie in the axial direction, from which derives the name.
- the fan of a radial fan has a certain resemblance to a mill wheel.
- the Einsaugströmung runs in the axial and the flow through the fan wheel in the radial direction.
- the blades of the fan are usually on one
- Support disc attached, and they promote the flow medium from the inside out.
- Diagonal fans are similar in their basic construction to axial fans and are also called “semi-axial" fans
- Axial fans only a low pressure build-up, related to similar fan sizes.
- a fan which has:
- a fan which is pot-shaped, a base part, one at his
- the blade ring has a plurality of blades for conveying a fluid, wherein the blades are connected to the base part, wherein the blades
- blades have a transition region in which a change takes place from the first region to the second region.
- the blades in the second region on an axial end wherein the axial end is at least partially open in the axial direction to allow there to promote the fluid in the axial direction.
- the fluid can flow in the axial direction
- the second area is arranged on the side facing away from the air inlet side
- the fluid can flow off in the axial direction.
- the base part is formed as a motor dome projecting into the blade ring, which has at its circumference a side wall which extends in an axial component direction, a portion of the inner edge of the blades being fixed directly to the side wall, and wherein the partial area is preferred at least 10% of the total length of the blades.
- the provision of the second region is particularly advantageous in order to be able to convey air in the area around the engine dome.
- the blades are at least partially curved forward in the first region and in the second region.
- the blades preferably have a first axial end associated with the fluid inlet opening and a second axial end facing away from the first axial end.
- the second axial end is at least partially open in the axial direction, to allow there a promotion of the fluid in the axial direction.
- air can be conveyed in the axial direction at the second axial end.
- the second region of the blades is arranged such that it comprises the second axial end.
- air is accelerated axially at the second axial end.
- the exit angle ß2 of the blades in the second region to the second axial end at least partially smaller.
- the second region of the blades is arranged such that it comprises the first axial end.
- air is accelerated axially at the first axial end.
- the exit angle ⁇ 2 of the blades over the axial extent L_ax of the respective blade is not constant.
- the exit angle ß2 of the blades in the second region is at least partially smaller than in the first region.
- the angular distance cp_diff between the blades is at least so great that they do not overlap in an axial plan view.
- the blades have a first, the fluid inlet opening associated axial end, the fan has a retaining ring, wherein the retaining ring is disposed in the region of the first axial ends of the blades and connecting them together.
- the retaining ring is arranged in the plan view outside of the base part, so that the retaining ring and the base part do not overlap.
- the first region comprises at least 15% of the total axial
- Extension L_ax of the respective blade more preferably at least 25%.
- the second region comprises at least 15% of the total axial extent L_ax of the respective blade, more preferably at least 25%.
- the first region and the second region preferably merge into one another in the transition region.
- the transition region has a bend to effect the change in the shape of the blades between the first region and the second region.
- the vanes are preferably free in the entire transition region and thus have a fluidic effect, in order to enable the transition of the fluid flow between the first region and the second region. Further details and advantageous developments of the invention will become apparent from the hereinafter described and illustrated in the drawings, to be understood in any way as limiting the invention
- 1 is a plan view of a fan 30 with a fan 40
- FIG. 3 is a three-dimensional view of the fan 40 of FIG. 1,
- FIG. 4 is a side view of the fan 40 of FIG. 3,
- FIG. 5 is a plan view of the fan 40 of FIG. 3,
- FIG. 6 shows a section through the fan wheel 40 from FIG. 3 along the line VI-VI from FIG. 5, FIG.
- Fig. 7 is a section through the fan 40 of FIG. 3 along the line
- Fig. 8 is a section through the fan wheel 40 of FIG. 3 along the line
- FIG. 9 is a perspective view of a fan of a radial fan according to the prior art.
- FIG. 10 is a plan view of the fan of FIG. 9,
- Fig. 1 1 is an explanation of parameters for describing the structure of a
- FIG. 12 is a side view of the fan 40 of FIG. 3,
- FIG. 13 shows a section through the fan 40 along the line XIII - XIII of FIG.
- 15 is a section through the fan 40 along the line XV - XV of FIG.
- 16 is a section through the fan 40 along the line XVI - XVI of FIG.
- 17 is a three-dimensional view of another embodiment of a fan impeller 40 according to the invention, 18 is a plan view of the fan 40 of FIG. 17,
- FIG. 19 is a side view of the fan 40 of FIG. 17,
- FIG. 20 is a three-dimensional view of an exemplary application with a
- FIG. 21 the exemplary application of FIG. 20, but without cover on
- Fig. 22 is a plan view of the application of Fig. 21, and
- FIG. 23 shows a section through the application from FIG. 21 along the line XXIII-XXIII from FIG. 22.
- Fig. 1 shows a plan view of a fan 30, which has a flange
- the fan 40 has a
- FIG. 2 shows a section through the ventilator from FIG. 1.
- the fan has the flange 34, a stator 35, a printed circuit board 36 with
- a rotor 80 is rotatably supported by the bearing assembly 37.
- the rotor 80 has a rotor pot 81 with rotor magnets 82 attached thereto, which cooperate with the stator 35, a hub 84 and a shaft 84 secured to the hub 84, which cooperates with the bearing assembly 37 to rotate the rotor 80 with the fan 40 to cause a rotation axis 32.
- the motor shown is an external rotor motor, and in such motors, the invention is particularly advantageous when - preferably - the fan 40 is at least partially disposed around the outer rotor 80 around.
- FIGS. 3 to 8 show different views of the fan wheel 40 and sections through it. The description will be made with reference to FIG. 3, and the other figures will be called, if they show the particular aspect particularly well.
- the fan 40 has a base 42, which is also referred to as a motor dome 42. At the periphery of the fan wheel 40, a blade ring 44 is arranged with a plurality of blades 50. This results in a pot-like structure of the fan wheel 40, as is typical for a radial fan.
- the blade ring 44 is a
- Air inlet opening 46 defines, and around the air inlet opening 46 around a retaining ring 45 is preferably arranged.
- the blades 50 are connected on the one hand to the base part 42 and on the other hand preferably to the retaining ring 45.
- the base member 42 preferably projects into the blade ring 44 in the form of a motor dome 42, and the base member 42 has at its periphery a side wall 43 which extends in an axial component direction, e.g. essentially axially towards the air inlet opening 46, cf. Fig. 6, or obliquely.
- the vanes 50 each have a first region 51 and a second region 52.
- the first region 51 they are designed as radial fan blades in order to effect a substantially radial delivery of a fluid there.
- the blades 50 are helical, so they have there a clearly visible blade pitch or blade slope.
- the blades 50 have a transition region 53 in which the first region 51 and the second region 52 merge into one another. In the transition region 53, therefore, a change from the first region 51 to the second region 52 takes place.
- the transition region 53 preferably has a bend to the change of
- the bending of the transition region 53 has to reduce the Noise preferably a curvature, but it can also be designed as a sharp kink.
- the blades are free in the entire transition region 53 and thus fluidly effective.
- the fluid flow is thus hampered there by webs or the like. This improves the transition of the fluid flow 63 (see Fig. 3) between the first region 51 and the second region 52.
- the blades 50 are formed curved both in the first region 51 and in the second region 52, more preferably curved forward. But they can also be curved backwards or end radially.
- the vanes 50 have a first, the fluid inlet opening 46 associated axial end 71, a second, facing away from the first axial end 72, a
- the space between the inner edges 73 of the blades 50 is also referred to as a suction chamber, since there the fluid 48 can flow.
- the second region 52 of the blades 50 includes the second axial end 72.
- Fig. 9 and Fig. 10 show a radial fan according to the prior art.
- the reference numerals are increased by 200 compared to the similar parts of the fan according to the invention in order to avoid confusion.
- the fan 240 has a base portion 242 with a side wall 243, blades 250, and a retaining ring 245 that interconnects the blades 250.
- the base member 242 projecting into the cup-shaped fan 240 causes the base member 242 to act as an obstacle to the air to be conveyed, and therefore reduce the air delivery in the area of the blades surrounding the base member 242.
- Ring plate 249 provided to effect a clearance 249 'between the inner edges 273 of the blades 250 and the base member 242 and the side wall 243.
- the blades 250 are disposed on the annular plate 249 so that the fluid can flow through this gap 249 'to the lower portion of the fan. Without such a gap 249 'is in the range of
- Base part 242 hardly promotes fluid.
- an embodiment of the base part 42 with such a ring plate 249 is likewise possible.
- fluid 48 can be conveyed away from the inlet opening 46 ("lower") region of the fan wheel 40 by the configuration of the blades 50 with the second region 52, even if the inner edge 73 of the blades 50 in the adjacent one A portion 73 'of the inner edge 73 of the blades 50 is in this case attached directly to the side wall 43, as will be described below with reference to FIG
- the blades 50 are already well secured, and the retaining ring 45 is not absolutely necessary, but it can also be used for balancing, for example, by removing parts from the retaining ring for balancing.
- FIG. 8 shows an oblique section through the fan 40 along the line VII - VIII of FIG. 4. It can be seen that a portion 73 'of the inner edges 73 of the
- Blades 50 are attached directly to the side wall 43 of the base part 42, wherein they are preferably formed integrally with the base part 42. This attachment to the side wall 43 leads to a high stability. From the base 42, the inside can be seen.
- the length of the partial region 73 ' preferably comprises at least 10% of the entire length of the inner edge 73 of the blades 50 in order to effect a good connection of the blades 50.
- the fan wheel 40 sucks in a fluid 48 in the axial direction 54 through the fluid inlet opening 46.
- the fluid 48 is blown out mainly in the radial direction 56.
- the blades 50 extend helically, and thereby the fluid 48 is blown out in a radial direction 58, but in addition there is an acceleration in the axial direction 60, whereby more fluid 48 toward the second axial end 72 of the blades 50th is encouraged.
- the total area of the individual blades 50 is increased by the second area 52 with the helical configuration.
- a pure axial fan produces no or hardly any fluid flow in the radial
- the fan 30 according to the invention can generate a fluid flow suitable, for example, for cooling, both in the radial peripheral region and in the lower region near the engine, and is thus advantageous.
- Fig. 11 shows common parameters used to describe a fan wheel.
- three different blades 50A, 50B, 50C are shown having an inner edge 73 and an outer edge 74A, 74B, 74C.
- the direction of rotation is designated by ⁇ , and the fan wheel rotates in this
- the entry radius is designated r1, and the inner edge 73 of the blades 50 terminates inside the entry radius r1.
- the exit radius is designated r2, and the outer edge 74A, 74B, 74C of the vanes 50 terminate outboard at the exit radius r2.
- the blades 50A, 50B, 50C have an entrance angle (blade entrance angle) ⁇ 1 and an exit angle
- the entrance angle ⁇ 1 is the angle between the direction 75 of the blade (the blade profile) 50A, 50B, 50C at the inner edge 73 and a tangent 77 at the entry radius r1 of the fan wheel 40.
- the tangent 77 is also referred to as a circle tangent to the inner edge 73.
- the exit angle ⁇ 2 is the angle between the direction (76A, 76B, 76C) of the blade (blade profile) 50A, 50B, 50C at the outer edge 74A, 74B, 74C and a tangent 78A, 78B, 78C at the exit radius r2 of the fan 40 Tangents 78A, 78B, 78C are also referred to as circle tangents on the outer edge 74.
- the exit angle ⁇ 2 in the fan impeller 40 according to FIGS. 3 to 17 is not constant over the axial extent L_ax (FIG. 4), in particular not in the second area 52.
- the blades 50 are curved forward in the first (radial) region 51, preferably with a substantially constant exit angle ⁇ 2.
- the exit angle ⁇ 2 in the direction away from the first region at least partially changes so as to change from the forward curved region toward the rearward curved region, and preferably does not extend into the rearward curved region.
- Change toward the backward curved region is preferably at least 50% of the length of the second region 52.
- Fig. 12 shows a side view of the impeller 40 of Fig. 3, and Fig. 13 to Fig. 16 show four sections through the impeller 40, wherein Fig. 13 represents the top, so the air inlet opening 46 nearest section, and Fig. 16 the lowermost So represents the furthest from the air inlet opening 46 section.
- Fig. 13 represents the top
- Fig. 16 the lowermost So represents the furthest from the air inlet opening 46 section.
- FIG. 13 to FIG. 16 the direction 76 of the blade 50 at its outer edge 74 is shown in each case on a blade 50. It can be seen, in particular, in comparison between FIGS. 16 and 13, that the exit angle ⁇ 2 becomes smaller in the direction away from the air inlet opening 46.
- FIG 17, 18 and 19 show a fan wheel 40 in which the first area 51, in which the blades 50 are designed as radial fan blades, and the second area 52 are interchanged with the helical course of the blades 50.
- the second region 52 is thus assigned to the side of the air inlet opening 46.
- the blades 50 are preferably curved forward, and the exit angle ß2 makes in the second region to the first area, so it changes in the second region 52 in the course from the first end 71 to the first region 51 toward the backward curved wing (ß2 ⁇ 90 °), wherein the exit angle preferably forward curved (ß2> 90 °) remains.
- Fan blades with forward curved blades are also referred to as drum travelers. Such fan wheels have the maximum power requirement when they are operated freely blowing. With increasing back pressure the power requirement decreases. Therefore, the prevailing teaching is that fan wheels with forward curved
- Fig. 20 shows an isometric view of a cooling device 10.
- Cooling device 10 has a base plate 12, two closed side walls 14, 16, cooling fins 20 and 22, through which cooling air can flow, and a fan 30, which in operation a fluid (eg air, helium, water), hereinafter called air, through an air inlet 32 sucks and blows out through the fan 30 to the cooling fins 20, 22 out.
- a fluid eg air, helium, water
- the fan 30 works here largely free-blowing.
- the base plate 12 is in thermal communication with a component to be cooled 24 (eg microprocessor, electronic component, power semiconductors, etc.), and the heat connection is made for example by direct contact of the component 24 with the base plate 12 (possibly using a thermal paste) or over one Another - not shown - good heat conducting heat conducting element. Measurements have shown that the temperature distribution in the cooling device usually increases towards the component 24.
- a component to be cooled 24 eg microprocessor, electronic component, power semiconductors, etc.
- FIG. 21 shows the cooling device 10 without the cover 18 from FIG. 20.
- the cooling ribs 20, 22 can also extend as far as the vicinity of the fan 30, in order to cover the cooling elements
- cooling fins 20, 22 in vertical or horizontal form is exemplary, and other designs are possible, e.g. Cooling ribs that run radially around the fan.
- Fig. 22 shows the fan 40 in the cooling device 10, wherein two zones 92, 94 are each drawn twice schematically.
- the ventilation in the zones 92, 94 was good.
- Fig. 23 shows schematically the temperature distribution in a cooling device 10.
- the temperatures are given according to the scheme TX, wherein the temperature is in ° C.
- T80 a temperature of 80 ° C.
- the component 24 to be cooled has e.g. a temperature of 120 ° C, and the
- Base plate 12 in the inner area also 120 ° C, in the outer areas 100 ° C.
- the side walls 14, 16 have on the component 24 side facing 80 ° C, and on the side facing away from this side 60 ° C.
- the cooling fins 20 have on the component 24 side facing 90 ° C, and facing away from the latter Page 60 ° C.
- This schematic example is intended to illustrate that it is effective to blow out more air on the half of the fan impeller 40 facing away from the air inlet opening 46 and to cool it in the (lower) region with the greater temperature. This is better possible with the fan 40 than with a conventional radial fan. Turning the fan 30 through 180 °, which theoretically would lead to an improvement in the cooling on the component 24 side facing the cooling device 10 in many cases, is not possible in many cases, since when turning the attachment of the fan only cumbersome would be and the
- Air supply to the fluid inlet opening would be covered by the bottom plate 12.
- the angular distance cp_diff is preferably selected to be at least so great that the blades 50 do not overlap in an axial plan view corresponding to FIG. 5. This results in a larger angular distance cp_diff than in a conventional one
- the blades 50 preferably also have a small draft angle with respect to the axis of rotation 32 in the first region 51 (see Fig. 3), so they do not run purely axially, but usually have a Entformschräge, for example, 1, 0 ° or 1, 5 ° ,
- the retaining ring 45 is arranged in the plan view outside of the base part 42, so that the retaining ring 45 and the base part 42 do not overlap, see. Fig. 5. This makes it possible, when manufactured by injection molding the
- the blade shape (contour) of the blades 50 may be e.g. be:
- the entry radius r1 (see Fig. 11) can be chosen differently between the inner edges 73 of the individual blades 50.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112013005143.5T DE112013005143A5 (de) | 2012-10-27 | 2013-10-26 | Lüfter mit einem Lüfterrad |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012021845.1 | 2012-10-27 | ||
DE201210021845 DE102012021845A1 (de) | 2012-10-27 | 2012-10-27 | Lüfter mit einem Lüfterrad |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014064284A1 true WO2014064284A1 (de) | 2014-05-01 |
Family
ID=49582711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/072460 WO2014064284A1 (de) | 2012-10-27 | 2013-10-26 | Lüfter mit einem lüfterrad |
Country Status (2)
Country | Link |
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DE (2) | DE102012021845A1 (de) |
WO (1) | WO2014064284A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018080614A (ja) * | 2016-11-15 | 2018-05-24 | 株式会社ヴァレオジャパン | ブロワユニット |
CN109083865A (zh) * | 2018-08-16 | 2018-12-25 | 泛仕达机电股份有限公司 | 一种前向多翼离心风机及其叶轮 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220060844A (ko) * | 2020-11-05 | 2022-05-12 | 엘지전자 주식회사 | 냉장고용 원심 팬 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61107000A (ja) * | 1984-10-30 | 1986-05-24 | Matsushita Electric Ind Co Ltd | シロツコフアン |
JPH045500A (ja) * | 1990-04-20 | 1992-01-09 | Hitachi Ltd | 多翼送風機 |
US6206087B1 (en) | 1997-04-30 | 2001-03-27 | Nidec Corporation | Heat sink fan |
US6328529B1 (en) | 1998-04-28 | 2001-12-11 | Denso Corporation | Cooling device with support members facing fin |
DE20216177U1 (de) * | 2002-01-31 | 2003-01-16 | Delta Electronics, Inc., Kuei San, Taoyuan | Gebläse und Flügelradkonstruktion für ein solches |
US20090162198A1 (en) * | 2006-03-17 | 2009-06-25 | Kazuo Ogino | Multi-blade fan |
US20090202352A1 (en) * | 2008-02-11 | 2009-08-13 | Michael Brendel | Forward swept centrifugal fan wheel |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9140270B2 (en) * | 2011-09-14 | 2015-09-22 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Centrifugal fan assembly |
-
2012
- 2012-10-27 DE DE201210021845 patent/DE102012021845A1/de not_active Withdrawn
-
2013
- 2013-10-26 WO PCT/EP2013/072460 patent/WO2014064284A1/de active Application Filing
- 2013-10-26 DE DE112013005143.5T patent/DE112013005143A5/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61107000A (ja) * | 1984-10-30 | 1986-05-24 | Matsushita Electric Ind Co Ltd | シロツコフアン |
JPH045500A (ja) * | 1990-04-20 | 1992-01-09 | Hitachi Ltd | 多翼送風機 |
US6206087B1 (en) | 1997-04-30 | 2001-03-27 | Nidec Corporation | Heat sink fan |
US6328529B1 (en) | 1998-04-28 | 2001-12-11 | Denso Corporation | Cooling device with support members facing fin |
DE20216177U1 (de) * | 2002-01-31 | 2003-01-16 | Delta Electronics, Inc., Kuei San, Taoyuan | Gebläse und Flügelradkonstruktion für ein solches |
US20090162198A1 (en) * | 2006-03-17 | 2009-06-25 | Kazuo Ogino | Multi-blade fan |
US20090202352A1 (en) * | 2008-02-11 | 2009-08-13 | Michael Brendel | Forward swept centrifugal fan wheel |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018080614A (ja) * | 2016-11-15 | 2018-05-24 | 株式会社ヴァレオジャパン | ブロワユニット |
WO2018092683A1 (ja) * | 2016-11-15 | 2018-05-24 | 株式会社ヴァレオジャパン | ブロワユニット |
CN109083865A (zh) * | 2018-08-16 | 2018-12-25 | 泛仕达机电股份有限公司 | 一种前向多翼离心风机及其叶轮 |
CN109083865B (zh) * | 2018-08-16 | 2023-08-22 | 泛仕达机电股份有限公司 | 一种前向多翼离心风机及其叶轮 |
Also Published As
Publication number | Publication date |
---|---|
DE112013005143A5 (de) | 2015-07-23 |
DE102012021845A1 (de) | 2014-04-30 |
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