US20150300374A1 - Electric Fan - Google Patents
Electric Fan Download PDFInfo
- Publication number
- US20150300374A1 US20150300374A1 US14/689,832 US201514689832A US2015300374A1 US 20150300374 A1 US20150300374 A1 US 20150300374A1 US 201514689832 A US201514689832 A US 201514689832A US 2015300374 A1 US2015300374 A1 US 2015300374A1
- Authority
- US
- United States
- Prior art keywords
- fan
- hub
- rotor
- electric fan
- electric
- 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.)
- Abandoned
Links
Images
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
- F04D29/66—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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/10—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air
- F04D25/105—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provisions for automatically changing direction of output air by changing rotor axis direction, e.g. oscillating fans
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
Definitions
- This invention relates to a fan driven by an electric motor and in particular, to an electric fan for a heat exchanger (such as a radiator) of a vehicle.
- a subject of the invention is an electric fan of the type comprising: an electric motor having an external rotor and an internal stator, and an axial fan including a substantially cup-shaped central hub, with a front wall facing and connected to the rotor, and a side wall which surrounds the rotor and from which a plurality of outer blades extends.
- the motor of such an electric fan generates considerable vibrations, which are transmitted to the fan and bring about the generation of an acoustic noise that is rather annoying for the human ear, particularly at low speeds.
- the Applicant tried connecting the hub of the fan to the rotor of the motor by means of one or more connecting devices that include an elastic vibration damper.
- Another known solution instead entails producing at least the hub of the fan from a flexible material, which is likely through its nature to attenuate, at least partly, the vibrations generated by the motor, without resorting to connecting devices provided with vibration damper elements.
- connecting devices comprising vibration dampers, or of fans with hubs of at least partly flexible material
- connecting devices comprising vibration dampers, or of fans with hubs of at least partly flexible material
- the present invention provides an electric fan comprising: an electric motor including an external rotor and an internal stator; and an axial fan including a substantially cup-shaped central hub, with a front wall, facing and connected to the rotor, and a side wall which surrounds the rotor, and from which there extends a plurality of outer blades, wherein protruding formations extend from the inner surface of the hub of the fan and/or from the outer surface of the rotor, and wherein, when the fan performs an oscillation of predetermined extent with respect to the rotor, the protruding formations impact the rotor and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor.
- the rotor of the electric motor has a cap which extends inside the hub of the fan close to the front wall of the hub to which it is connected by means of one or more connecting devices including respective elastic vibration dampers.
- the or each of the connecting devices comprises an annular damper member of elastic material arranged in a through-opening of the hub, and through which a fastening member passes to fasten the hub to the cap of the rotor.
- the elastic material may be an elastomeric material.
- each damper member and the corresponding fastening member there is a tubular element of substantially rigid material, for example, a metal material.
- the fastening member is a screw or bolt having an end head
- the rigid tubular element exhibits at one end a flange-like formation placed between the head of the corresponding screw or bolt and the damper member.
- the elastic damper member is substantially in the shape of a cylindrical ring, and exhibits an outer peripheral groove into which the edge of the through-opening of the hub is engaged.
- the hub of the fan is produced with a flexible material and the rotor of the motor has a cap which extends inside the hub of the fan close to the front wall of the hub, to which it is connected by means of one or more connecting devices.
- FIG. 1 is a front perspective view of an electric fan according to the preferred embodiment of the present invention.
- FIG. 2 is a partial perspective view, in enlarged scale, which shows in particular the hub of the fan of the electric fan of FIG. 1 ;
- FIG. 3 is a partial view in cross-section along the line of FIG. 2 ;
- FIG. 4 is a partial view in cross-section, similar to that presented in FIG. 3 , and shows a variant embodiment.
- the electric fan 1 comprises, in a known way per se, a substantially plate-like support structure or shroud 2 , exhibiting a circular main opening 3 at which there is rotatable fitted a fan indicated as a whole with the reference 4 .
- the fan 4 is connected to the rotor of an electric motor which is not visible in FIGS. 1 and 2 , but is partially illustrated in FIG. 3 , in which it is indicated as a whole with the reference 5 .
- the electric motor 5 comprises a stator 6 , fixed in a known way per se to the support structure or shroud 2 , for example by means of a plurality of spokes indicated with the reference 7 in FIG. 1 .
- the motor 5 additionally comprises a rotor, including a cap indicated with the reference 8 in FIG. 3 .
- the fan 4 comprises a central hub 9 , from which there extends a plurality of curved blades 10 , the outermost extremities of which meet a peripheral ring 11 (see FIG. 1 ).
- the hub 9 is connected to the rotor cap 8 at one or more points or areas of connection.
- the hub 9 is connected to the rotor cap 8 of the motor 5 at three points or areas of connection, indicated with the reference 12 and located at a same distance d from the axis X-X of the fan ( FIG. 3 ).
- the hub 9 of the fan 4 exhibits a substantially cup-like shape, with a front wall 9 a which is connected with an annular side wall 9 b, which is at least approximately cylindrical.
- the rotor cap 8 of the motor 5 extends inside the hub 9 , close to the front wall 9 a of the latter to which it is connected at the above said three points or areas of connection 12 by means of devices 13 including respective elastic vibration dampers, which will be better described below.
- each connecting device 13 comprises an annular damper member 14 , of elastic material, in particular of elastomeric material (vulcanized rubber).
- the or each damper member 14 is arranged in a through-opening 9 c of the front wall 9 a of the hub 9 of the fan.
- Such a damper member 14 is substantially in the shape of a cylindrical ring, and in its axially intermediate part exhibits an outer peripheral groove 14 a into which the edge of the through-opening 9 c of the hub 9 of the fan 4 is engaged.
- a corresponding fastening member 15 of the fan passes through the damper member 14 and the rotor cap 8 of the electric motor 5 .
- the fastening member 15 is for example a screw or a bolt, provided with an end head 15 a.
- tubular element 16 of substantially rigid material, such as for example a metal material.
- the rigid tubular element 16 conveniently exhibits an end flange formation 16 a, placed between the head 15 a of the screw or bolt 15 and the adjacent end of the annular damper member 14 .
- the tubular element 16 rests on the rotor cap 8 .
- the threaded stem of the screw or bolt 15 engages in a correspondingly threaded opening of the rotor cap 8 .
- protruding formations 20 and 21 extend from the inner surface 9 d of the hub 9 of the fan 4 , in the direction of the rotor cap 8 .
- the distal ends of these formations extend, at rest, to preset distances from the outer surface of the rotor cap 8 .
- protruding formations 20 extend from the front wall 9 a of the hub 9 towards the corresponding front wall of the rotor cap 8 .
- the protruding formations 21 extend from the inner surface of the side wall 9 b of the hub, in the direction of the side wall of the rotor cap 8 .
- the arrangement is such that when the fan 4 performs an oscillation of predetermined extent with respect to the rotor, the protruding formations 20 and 21 impact the rotor cap 8 and limit the extent of the oscillation which the fan 4 can perform relative to the rotor.
- protruding formations can be provided on the outer surface of the rotor cap 8 , to achieve the same aim. According to a further variant that is not illustrated, protruding formations can be produced either on the inner surface of the hub 9 of the fan 4 , and/or on the outer surface of the rotor cap 8 .
- FIG. 4 A further embodiment is illustrated in FIG. 4 .
- the hub 9 of the fan 4 is produced with a flexible material, suitable for attenuating, at least partly, the vibrations generated by the electric motor 5 .
- the hub 9 can be connected to the rotor cap 8 of the motor 5 at a plurality of points or areas of connection 12 , located at a same distance d from the axis X-X of the fan 4 .
- the front wall 9 a of the hub 9 is connected to the rotor cap 8 by means of a corresponding fastening member 15 , such as a screw or a bolt, with simply a washer 22 interposed.
- protruding formations 20 and 21 extend from the inner surface 9 d of the hub 9 of the fan 4 .
- the protruding formations can be, as an alternative, produced on the outer surface of the rotor cap 8 , or both on the inner surface of the hub 9 and on the outer surface of the rotor cap 8 .
Abstract
An electric fan has an electric motor driving an axial fan. The fan has a cup-shaped hub, with a front wall, and a side wall from which there extends a plurality of outer blades. The motor has an outer rotor including a rotor cap to which the front wall of the hub is attached. From the inner surface of the hub and/or from the outer surface of the rotor cap, there extend protruding formations which, when the fan performs an oscillation of predetermined extent with respect to the rotor, impact the rotor cap and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor.
Description
- This non-provisional patent application claims priority under 35 U.S.C. §119(a) from Utility Model Application No. TO2014U000060 filed in Italy on Apr. 17, 2014, the entire contents of which are hereby incorporated by reference.
- This invention relates to a fan driven by an electric motor and in particular, to an electric fan for a heat exchanger (such as a radiator) of a vehicle.
- More specifically, a subject of the invention is an electric fan of the type comprising: an electric motor having an external rotor and an internal stator, and an axial fan including a substantially cup-shaped central hub, with a front wall facing and connected to the rotor, and a side wall which surrounds the rotor and from which a plurality of outer blades extends.
- In operation, the motor of such an electric fan generates considerable vibrations, which are transmitted to the fan and bring about the generation of an acoustic noise that is rather annoying for the human ear, particularly at low speeds.
- To address this drawback, the Applicant tried connecting the hub of the fan to the rotor of the motor by means of one or more connecting devices that include an elastic vibration damper.
- Another known solution instead entails producing at least the hub of the fan from a flexible material, which is likely through its nature to attenuate, at least partly, the vibrations generated by the motor, without resorting to connecting devices provided with vibration damper elements.
- The adoption of connecting devices comprising vibration dampers, or of fans with hubs of at least partly flexible material, involves a drawback that, when the motor vehicle on which such an electric fan is installed is subjected to strong angular accelerations, the fan is susceptible to performing oscillations even of notable extent and can collide with surrounding objects and devices, such as the heat exchanger with which it is associated.
- Hence there is a desire for a an electric fan of such a type, produced so as to address the problem, as outlined above.
- This is achieved in the present invention by using formations protruding from the inner surface of the hub of the fan, and/or from the outer surface of the rotor of the motor, such that when the fan performs an oscillation of predetermined extent with respect to the rotor, the formations impact the rotor and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor.
- Accordingly, in one aspect thereof, the present invention provides an electric fan comprising: an electric motor including an external rotor and an internal stator; and an axial fan including a substantially cup-shaped central hub, with a front wall, facing and connected to the rotor, and a side wall which surrounds the rotor, and from which there extends a plurality of outer blades, wherein protruding formations extend from the inner surface of the hub of the fan and/or from the outer surface of the rotor, and wherein, when the fan performs an oscillation of predetermined extent with respect to the rotor, the protruding formations impact the rotor and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor.
- Preferably, the rotor of the electric motor has a cap which extends inside the hub of the fan close to the front wall of the hub to which it is connected by means of one or more connecting devices including respective elastic vibration dampers.
- Preferably, the or each of the connecting devices comprises an annular damper member of elastic material arranged in a through-opening of the hub, and through which a fastening member passes to fasten the hub to the cap of the rotor. The elastic material may be an elastomeric material.
- Preferably, between each damper member and the corresponding fastening member, there is a tubular element of substantially rigid material, for example, a metal material.
- Preferably, the fastening member is a screw or bolt having an end head, and the rigid tubular element exhibits at one end a flange-like formation placed between the head of the corresponding screw or bolt and the damper member.
- Preferably, the elastic damper member is substantially in the shape of a cylindrical ring, and exhibits an outer peripheral groove into which the edge of the through-opening of the hub is engaged.
- Alternatively, the hub of the fan is produced with a flexible material and the rotor of the motor has a cap which extends inside the hub of the fan close to the front wall of the hub, to which it is connected by means of one or more connecting devices.
- Preferred embodiments of the invention will now be described, by way of example only, with reference to figures of the accompanying drawings. In the figures, identical structures, elements or parts that appear in more than one figure are generally labeled with a same reference numeral in all the figures in which they appear. Dimensions of components and features shown in the figures are generally chosen for convenience and clarity of presentation and are not necessarily shown to scale. The figures are listed below.
-
FIG. 1 is a front perspective view of an electric fan according to the preferred embodiment of the present invention; -
FIG. 2 is a partial perspective view, in enlarged scale, which shows in particular the hub of the fan of the electric fan ofFIG. 1 ; -
FIG. 3 is a partial view in cross-section along the line ofFIG. 2 ; and -
FIG. 4 is a partial view in cross-section, similar to that presented inFIG. 3 , and shows a variant embodiment. - In the drawings, an electric fan according to the present invention is indicated as a whole with the reference 1.
- The electric fan 1 comprises, in a known way per se, a substantially plate-like support structure or
shroud 2, exhibiting a circularmain opening 3 at which there is rotatable fitted a fan indicated as a whole with the reference 4. The fan 4 is connected to the rotor of an electric motor which is not visible inFIGS. 1 and 2 , but is partially illustrated inFIG. 3 , in which it is indicated as a whole with thereference 5. - The
electric motor 5 comprises astator 6, fixed in a known way per se to the support structure orshroud 2, for example by means of a plurality of spokes indicated with thereference 7 inFIG. 1 . Themotor 5 additionally comprises a rotor, including a cap indicated with thereference 8 inFIG. 3 . - The fan 4 comprises a central hub 9, from which there extends a plurality of
curved blades 10, the outermost extremities of which meet a peripheral ring 11 (seeFIG. 1 ). The hub 9 is connected to therotor cap 8 at one or more points or areas of connection. - In the exemplary embodiments of the drawings, the hub 9 is connected to the
rotor cap 8 of themotor 5 at three points or areas of connection, indicated with thereference 12 and located at a same distance d from the axis X-X of the fan (FIG. 3 ). The hub 9 of the fan 4 exhibits a substantially cup-like shape, with afront wall 9 a which is connected with an annular side wall 9 b, which is at least approximately cylindrical. - The
rotor cap 8 of themotor 5 extends inside the hub 9, close to thefront wall 9 a of the latter to which it is connected at the above said three points or areas ofconnection 12 by means ofdevices 13 including respective elastic vibration dampers, which will be better described below. - With reference in particular to
FIG. 3 , each connectingdevice 13 comprises anannular damper member 14, of elastic material, in particular of elastomeric material (vulcanized rubber). The or eachdamper member 14 is arranged in a through-opening 9 c of thefront wall 9 a of the hub 9 of the fan. Such adamper member 14 is substantially in the shape of a cylindrical ring, and in its axially intermediate part exhibits an outerperipheral groove 14 a into which the edge of the through-opening 9 c of the hub 9 of the fan 4 is engaged. Acorresponding fastening member 15 of the fan passes through thedamper member 14 and therotor cap 8 of theelectric motor 5. - The fastening
member 15 is for example a screw or a bolt, provided with anend head 15 a. - Between the
annular damper member 14 and the screw orbolt 15, there is placed atubular element 16 of substantially rigid material, such as for example a metal material. The rigidtubular element 16 conveniently exhibits an end flange formation 16 a, placed between thehead 15 a of the screw orbolt 15 and the adjacent end of theannular damper member 14. On the opposite side, thetubular element 16 rests on therotor cap 8. - The threaded stem of the screw or
bolt 15 engages in a correspondingly threaded opening of therotor cap 8. - In the embodiment illustrated in
FIGS. 1 to 3 , protrudingformations 20 and 21 extend from the inner surface 9 d of the hub 9 of the fan 4, in the direction of therotor cap 8. The distal ends of these formations extend, at rest, to preset distances from the outer surface of therotor cap 8. - In the exemplary embodiment illustrated, protruding formations 20 extend from the
front wall 9 a of the hub 9 towards the corresponding front wall of therotor cap 8. Theprotruding formations 21 extend from the inner surface of the side wall 9 b of the hub, in the direction of the side wall of therotor cap 8. - The arrangement is such that when the fan 4 performs an oscillation of predetermined extent with respect to the rotor, the
protruding formations 20 and 21 impact therotor cap 8 and limit the extent of the oscillation which the fan 4 can perform relative to the rotor. - In a variant embodiment that is not illustrated, protruding formations can be provided on the outer surface of the
rotor cap 8, to achieve the same aim. According to a further variant that is not illustrated, protruding formations can be produced either on the inner surface of the hub 9 of the fan 4, and/or on the outer surface of therotor cap 8. - A further embodiment is illustrated in
FIG. 4 . - In
FIG. 4 , parts and elements that are equal to or substantially matching parts and elements already described have been assigned the same reference numbers used previously. - In the variant according to
FIG. 4 , the hub 9 of the fan 4 is produced with a flexible material, suitable for attenuating, at least partly, the vibrations generated by theelectric motor 5. - In this case also, the hub 9 can be connected to the
rotor cap 8 of themotor 5 at a plurality of points or areas ofconnection 12, located at a same distance d from the axis X-X of the fan 4. In the or each point or area ofconnection 12, thefront wall 9 a of the hub 9 is connected to therotor cap 8 by means of acorresponding fastening member 15, such as a screw or a bolt, with simply awasher 22 interposed. - Also in the embodiment according to
FIG. 4 , protrudingformations 20 and 21, of similar shape and function to those described above with reference toFIG. 3 , extend from the inner surface 9 d of the hub 9 of the fan 4. - Also in the case of the variant according to
FIG. 4 , the protruding formations can be, as an alternative, produced on the outer surface of therotor cap 8, or both on the inner surface of the hub 9 and on the outer surface of therotor cap 8. - In the description and claims of the present application, each of the verbs “comprise”, “include”, “contain” and “have”, and variations thereof, are used in an inclusive sense, to specify the presence of the stated item or feature but do not preclude the presence of additional items or features.
- It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination.
- The embodiments described above are provided by way of example only, and various other modifications will be apparent to persons skilled in the field without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. An electric fan comprising:
an electric motor including an external rotor and an internal stator; and
an axial fan including a substantially cup-shaped central hub, with a front wall, facing and connected to the rotor, and a side wall which surrounds the rotor, and from which there extends a plurality of outer blades,
wherein protruding formations extend from the inner surface of the hub of the fan and/or from the outer surface of the rotor, and
wherein, when the fan performs an oscillation of predetermined extent with respect to the rotor, the protruding formations impact the rotor and/or the hub, limiting the extent of the oscillation of the fan with respect to the rotor.
2. The electric fan of claim 1 , wherein the rotor of the electric motor has a cap which extends inside the hub of the fan close to the front wall of the hub to which it is connected by means of one or more connecting devices including respective elastic vibration dampers.
3. The electric fan of claim 2 , wherein the or each of the connecting devices comprises an annular damper member of elastic material arranged in a through-opening of the hub, and through which a fastening member passes to fasten the hub to the cap of the rotor.
4. The electric fan of claim 3 , wherein the elastic material is an elastomeric material.
5. The electric fan of claim 3 , wherein between each damper member and the corresponding fastening member, there is a tubular element of substantially rigid material.
6. The electric fan of claim 5 , wherein the substantially rigid material is a metal material.
7. The electric fan of claim 5 , wherein the fastening member is a screw or bolt having an end head, and the rigid tubular element exhibits at one end a flange-like formation placed between the head of the corresponding screw or bolt and the damper member.
8. The electric fan of claim 1 , wherein the elastic damper member is substantially in the shape of a cylindrical ring, and exhibits an outer peripheral groove into which the edge of the through-opening of the hub is engaged.
9. The electric fan of claim 1 , wherein the hub of the fan is produced with a flexible material and the rotor of the motor has a cap which extends inside the hub of the fan close to the front wall of the hub, to which it is connected by means of one or more connecting devices.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO2014U000060 | 2014-04-17 | ||
ITTO2014U000060U ITTO20140060U1 (en) | 2014-04-17 | 2014-04-17 | ELECTROVENTILATORE OF COOLING, PARTICULARLY FOR A HEAT EXCHANGER OF A MOTOR VEHICLE |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150300374A1 true US20150300374A1 (en) | 2015-10-22 |
Family
ID=54250057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/689,832 Abandoned US20150300374A1 (en) | 2014-04-17 | 2015-04-17 | Electric Fan |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150300374A1 (en) |
JP (1) | JP2015206364A (en) |
CN (1) | CN105041687A (en) |
BR (1) | BR102015008590A2 (en) |
DE (1) | DE102015105894A1 (en) |
IT (1) | ITTO20140060U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150104305A1 (en) * | 2013-10-11 | 2015-04-16 | Inventec Corporation | Fan assembly and fastener thereof |
US20150118037A1 (en) * | 2013-10-28 | 2015-04-30 | Minebea Co., Ltd. | Centrifugal fan |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7126913B2 (en) | 2018-09-20 | 2022-08-29 | 東芝キヤリア株式会社 | Blower |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663604A (en) * | 1994-12-28 | 1997-09-02 | Nidec Corporation | Brushless motor |
US5964579A (en) * | 1997-06-24 | 1999-10-12 | Rheem Manufacturing Company | Prestressed resilient compressor mount apparatus |
US6328513B1 (en) * | 1999-05-19 | 2001-12-11 | Nichias Corporation | Vibration floating washer assembly and method of attaching the same to heat insulating plate |
US6456807B1 (en) * | 1999-06-03 | 2002-09-24 | Konica Corporation | Rotation stabilizing device |
US20060103245A1 (en) * | 2004-11-12 | 2006-05-18 | Siemens Vdo Automotive Inc. | Engine cooling motor-module ventilation configuration |
US7061155B1 (en) * | 2005-01-04 | 2006-06-13 | Asia Vital Component Co., Ltd. | Rotor device capable of dissipating heat and resisting foreign objects |
US7166940B2 (en) * | 2003-02-12 | 2007-01-23 | Robert Bosch Gmbh | External rotor motor |
US20070170790A1 (en) * | 2006-01-25 | 2007-07-26 | Denso Corporation | Blower |
US9182008B2 (en) * | 2009-05-13 | 2015-11-10 | Robert Bosch Gmbh | Adjustment device for a rotating body and rotating body |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102251975B (en) * | 2011-06-28 | 2012-12-05 | 无锡锡山特种风机有限公司 | Axial flow fan of explosion-proof-type external rotor motor |
CN202851455U (en) * | 2011-11-14 | 2013-04-03 | 佛山市顺德区机灵电器有限公司 | Column type multifunctional electric fan |
-
2014
- 2014-04-17 IT ITTO2014U000060U patent/ITTO20140060U1/en unknown
-
2015
- 2015-03-19 CN CN201510122867.9A patent/CN105041687A/en not_active Withdrawn
- 2015-04-16 BR BR102015008590A patent/BR102015008590A2/en not_active Application Discontinuation
- 2015-04-17 US US14/689,832 patent/US20150300374A1/en not_active Abandoned
- 2015-04-17 JP JP2015084701A patent/JP2015206364A/en active Pending
- 2015-04-17 DE DE102015105894.4A patent/DE102015105894A1/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5663604A (en) * | 1994-12-28 | 1997-09-02 | Nidec Corporation | Brushless motor |
US5964579A (en) * | 1997-06-24 | 1999-10-12 | Rheem Manufacturing Company | Prestressed resilient compressor mount apparatus |
US6328513B1 (en) * | 1999-05-19 | 2001-12-11 | Nichias Corporation | Vibration floating washer assembly and method of attaching the same to heat insulating plate |
US6456807B1 (en) * | 1999-06-03 | 2002-09-24 | Konica Corporation | Rotation stabilizing device |
US7166940B2 (en) * | 2003-02-12 | 2007-01-23 | Robert Bosch Gmbh | External rotor motor |
US20060103245A1 (en) * | 2004-11-12 | 2006-05-18 | Siemens Vdo Automotive Inc. | Engine cooling motor-module ventilation configuration |
US7061155B1 (en) * | 2005-01-04 | 2006-06-13 | Asia Vital Component Co., Ltd. | Rotor device capable of dissipating heat and resisting foreign objects |
US20070170790A1 (en) * | 2006-01-25 | 2007-07-26 | Denso Corporation | Blower |
US9182008B2 (en) * | 2009-05-13 | 2015-11-10 | Robert Bosch Gmbh | Adjustment device for a rotating body and rotating body |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150104305A1 (en) * | 2013-10-11 | 2015-04-16 | Inventec Corporation | Fan assembly and fastener thereof |
US20150118037A1 (en) * | 2013-10-28 | 2015-04-30 | Minebea Co., Ltd. | Centrifugal fan |
Also Published As
Publication number | Publication date |
---|---|
JP2015206364A (en) | 2015-11-19 |
BR102015008590A2 (en) | 2016-04-05 |
CN105041687A (en) | 2015-11-11 |
ITTO20140060U1 (en) | 2015-10-17 |
DE102015105894A1 (en) | 2015-10-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2728623T3 (en) | Shock absorber | |
KR20180125969A (en) | Coupling device for attaching an airbag module to a vehicle steering wheel in a vibratable manner | |
US20150300374A1 (en) | Electric Fan | |
TW200505708A (en) | Automotive engine-cooling fan assembly | |
US20150198177A1 (en) | Impeller for an electric fan | |
US20200309155A1 (en) | Blower | |
US20070240846A1 (en) | Integrally molded motor isolation system | |
JP6688011B2 (en) | Axial fan for cooling fan module | |
US10794400B2 (en) | Fan with shock-absorbing effect | |
US10516317B2 (en) | Motor bearing arrangement for a motor, in particular of a fan of a vehicle air-conditioning unit | |
US20150198165A1 (en) | Electric fan | |
US8511529B2 (en) | Oscillation reducing suspension device for a fan motor of a combustion-powered tool | |
JP4952922B2 (en) | Engine noise reduction device | |
US20150292512A1 (en) | Electric cooling fan | |
CN106440283B (en) | Motor mounting structure and air conditioner of air conditioner | |
US20180306208A1 (en) | Axial Fan For A Cooling Fan Module | |
JP7080147B2 (en) | Rotation fluctuation absorption damper | |
JP6411062B2 (en) | Anti-vibration structure of rotating body | |
US6378849B1 (en) | Methods and apparatus for mounting motors | |
KR101572899B1 (en) | Gearbox mounting assembly | |
JP6844493B2 (en) | Vehicle resonator mounting structure | |
US11137046B2 (en) | Tuned absorber assembly | |
KR20170060270A (en) | damper for a vehicle's driving shaft | |
JP2007232165A (en) | Torsional damper | |
JP2017048704A (en) | Impeller and axial flow blower including the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: JOHNSON ELECTRIC S.A., SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GABBIN, GIULIANO;PROCOPIO, ERMANNO;MORRA, GIUSEPPE;SIGNING DATES FROM 20150213 TO 20150218;REEL/FRAME:035503/0089 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |