EP1025792B1 - Elektromotorisch betriebene Saugeinheit mit Laufrad zum Kühlen des Motors - Google Patents

Elektromotorisch betriebene Saugeinheit mit Laufrad zum Kühlen des Motors Download PDF

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Publication number
EP1025792B1
EP1025792B1 EP00200345A EP00200345A EP1025792B1 EP 1025792 B1 EP1025792 B1 EP 1025792B1 EP 00200345 A EP00200345 A EP 00200345A EP 00200345 A EP00200345 A EP 00200345A EP 1025792 B1 EP1025792 B1 EP 1025792B1
Authority
EP
European Patent Office
Prior art keywords
unit
partition
motor
impeller
accordance
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.)
Expired - Lifetime
Application number
EP00200345A
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English (en)
French (fr)
Other versions
EP1025792A2 (de
EP1025792A3 (de
Inventor
Mario Giussani
Giampaolo Rapi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ametek Italia SRL
Original Assignee
Ametek Italia SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ametek Italia SRL filed Critical Ametek Italia SRL
Publication of EP1025792A2 publication Critical patent/EP1025792A2/de
Publication of EP1025792A3 publication Critical patent/EP1025792A3/de
Application granted granted Critical
Publication of EP1025792B1 publication Critical patent/EP1025792B1/de
Anticipated expiration legal-status Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans

Definitions

  • the present invention relates to a powered aspirator unit of the type termed 'bypass' i.e. the type in which the pump suction path and the motor cooling air path are separated to prevent any sucked liquid from reaching the electrical part of the motor.
  • Units of this type are ordinarily used in aspirator cleaners having the ability to suck liquid also.
  • bypass units are supplied with a suction unit which is mounted at the motor head with the blower keyed to the drive shaft. At the opposite end of the shaft is mounted the motor cooling air circulation fan.
  • a suction unit which is mounted at the motor head with the blower keyed to the drive shaft.
  • the motor cooling air circulation fan At the opposite end of the shaft is mounted the motor cooling air circulation fan.
  • EP-A-0413113 discloses a bypass aspirator unit, wherein the cooling air circulation fan is arranged between the motor and the suction fan.
  • the general purpose of the present invention is to remedy the above mentioned shortcomings by making available a bypass unit having reduced space occupied, better performance and relatively reduced costs.
  • a powered aspirator unit wherein the suction path and the motor cooling air path are separated, said unit comprising an electric motor having an impeller for cooling and a suction assemblage with fan keyed on the motor shaft, wherein between the motor and the fan there is a partition in which is made a seat for a bearing supporting said shaft, characterized in that the impeller extends into the radial zone of the bearing.
  • a 'bypass' unit indicated as a whole by reference number 10 comprises an external shell or bowl 11 pressed from plastic material, containing a stator part 12 and a rotor part 13 and supported on a shaft 14 of an electric motor.
  • a cap 15 completes the shell 11 and has an axial suction inlet 16 for a fan 17 keyed on the end of the shaft 14 to complete a sucking assemblage.
  • the air pushed by the fan is evacuated through peripheral channels 18.
  • the cavity 19 containing the fan is separated from the motor cavity 20 by a partition 21 which partially embodies the evacuation channels 18 (for the rest embodied by the edge 22 of the bowl 11).
  • the partition 21 is shaped with a cavity 23 to form the stator part of a motor cooling impeller 24 which is keyed to the shaft 14.
  • the impeller 24 sucks air longitudinally to the motor starting from the inlets 25 embodied at the base of the bowl 11.
  • the air flow traverses the motor at 26 as shown by the arrows in FIG 1 and is evacuated through the radial openings 27 made in the wall of the bowl immediately beneath the edge 22.
  • a pressed cap 35 provides a deflector arranged radially facing the evacuation openings 27 to channel the emerging flow and prevent possible recirculation.
  • the shaft 14 is supported by a first bearing 28 housed in a seat 29 in the bowl base and by a second bearing 30 housed in a seat 31 made in the thickness of the partition 21.
  • a first bearing 28 housed in a seat 29 in the bowl base
  • a second bearing 30 housed in a seat 31 made in the thickness of the partition 21.
  • the thickness of the partition 21 necessary for housing the bearing is also employed for receiving the cavity 23. In other words the impeller extends into the bearing radial zone.
  • FIGS 2 and 3 can be seen how the suction unit evacuation ducts are made.
  • the ducts are formed by a part 18a pressed in the edge of the bowl and a part 18b pressed in the partition 21.
  • chutes 18a with inlet edge 32 and direct for a first section tangentially to then bend up to the radial outlets.
  • the partition 21 separated from the cavities 23 of the impeller by an O-ring 33 there are open channels 18b with inlet edge 34 coinciding with the edge 32 of the chutes.
  • the open channels 18b follow the same trend as the chutes 18a and constitute the cover thereof to form the complete channels 18.
  • the channels lead through openings made laterally in the cap.
  • the static part of the unit is reduced to three members (bowl, cap and partitions) easy to make (e.g. pressed from plastic material) and assemble. Lastly the stoutness of the assemblage is increased.

Landscapes

  • Motor Or Generator Cooling System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Centrifugal Separators (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Telephone Function (AREA)
  • Compressor (AREA)

Claims (9)

  1. Angetriebene Saugeinrichtung, bei der der Saugpfad und der Motorkühlluftpfad getrennt sind, wobei die Einrichtung einen elektrischen Motor mit einem Laufrad (24) zum Kühlen und eine Sauganordnung mit einem Lüfter (17) umfaßt, der mit dem Motorschaft (14) verkeilt ist, wobei zwischen dem Motor und dem Lüfter ein Abteil (21) vorgesehen ist, in dem ein Sitz (31) für ein Lager (30) bereitgestellt ist, das den Schaft (14) trägt, dadurch gekennzeichnet, daß sich das Laufrad (24) in den radialen Bereich des Lagers (30) erstreckt.
  2. Einheit nach Anspruch 1, dadurch gekennzeichnet, daß das Abteil (21) aus dem Statorteil (23) des Laufrads (24) gebildet ist.
  3. Einheit nach Anspruch 1, dadurch gekennzeichnet, daß das Abteil (21) den Boden der Sauganordnung bildet.
  4. Einheit nach Anspruch 1, dadurch gekennzeichnet, daß der Motor in einem Topfgehäuse (11) mit einem Hohlraum enthalten ist, der durch das Abteil (21) geschlossen ist, an dem eine Kappe (15) angeordnet ist, um ein Gehäuse für die Sauganordnung bereitzustellen.
  5. Einheit nach Anspruch 4, dadurch gekennzeichnet, daß der Topf einen Rand (22) in der Nähe der Kappe (15) aufweist, der radial vorsteht und derart geformt ist, daß zumindest ein Teil (18a) von Luftevakuierungsleitungen der Sauganordnung definiert ist.
  6. Einheit nach Anspruch 5, dadurch gekennzeichnet, daß die Evakuierungsleitungen (18) das Abteil queren und an die Umfangswand des Topfrandes gelangen.
  7. Einheit nach Anspruch 5, dadurch gekennzeichnet, daß der Rest (18b) der Leitungen in einem Umfangsteil des das Statorteil (23) des Laufrads (24) umgebenden Abteils definiert und davon getrennt und abgedichtet ist, wenn das Abteil an dem Topf angebracht ist.
  8. Einheit nach Anspruch 4, dadurch gekennzeichnet, daß der Topf eine Seitenwand in der Nähe des Abteils aufweist und Öffnungen (27) zum Evakuieren der Luft freigibt, die von dem Kühllaufrad (24) von der Basis des Topfs angesaugt ist und den Motor in Längsrichtung passiert.
  9. Einheit nach Anspruch 8, dadurch gekennzeichnet, daß der Topf einen Deflektor (35) enthält, der in der Nähe des Laufrads (24) angeordnet ist und den Evakuierungsöffnungen (27) radial zugewandt ist, um den Kühlluftstrom auf diese zu zu kanalisieren.
EP00200345A 1999-02-08 2000-02-02 Elektromotorisch betriebene Saugeinheit mit Laufrad zum Kühlen des Motors Expired - Lifetime EP1025792B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999MI000237A IT1307675B1 (it) 1999-02-08 1999-02-08 Gruppo motoaspiratore a struttura perfezionata
ITMI990237 1999-02-08

Publications (3)

Publication Number Publication Date
EP1025792A2 EP1025792A2 (de) 2000-08-09
EP1025792A3 EP1025792A3 (de) 2002-05-29
EP1025792B1 true EP1025792B1 (de) 2006-10-11

Family

ID=11381790

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00200345A Expired - Lifetime EP1025792B1 (de) 1999-02-08 2000-02-02 Elektromotorisch betriebene Saugeinheit mit Laufrad zum Kühlen des Motors

Country Status (6)

Country Link
EP (1) EP1025792B1 (de)
AT (1) ATE341987T1 (de)
DE (1) DE60031187T2 (de)
DK (1) DK1025792T3 (de)
IT (1) IT1307675B1 (de)
TR (1) TR200000364A2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3763946A1 (de) 2019-07-10 2021-01-13 LG Electronics Inc. Motorventilator
EP3763947A1 (de) 2019-07-10 2021-01-13 LG Electronics Inc. Motorventilator und herstellungsverfahren dafür
EP3849065A1 (de) 2020-01-09 2021-07-14 X'Pole Precision Tools Inc. Abgasmotor einer vakuumvorrichtung
AU2020289847A1 (en) * 2020-10-22 2022-05-12 Lg Electronics Inc. Fan motor
US11510542B2 (en) 2019-12-24 2022-11-29 X'pole Precision Tools Inc. Exhaust motor of vacuum device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1325702B1 (de) * 2002-01-03 2010-07-14 Lg Electronics Inc. Kreiselgebläse für Staubsauger
GB0202835D0 (en) 2002-02-07 2002-03-27 Johnson Electric Sa Blower motor
GB0202839D0 (en) * 2002-02-07 2002-03-27 Johnson Electric Sa Blower motor
GB2467965B (en) * 2009-02-24 2015-04-22 Dyson Technology Ltd Rotor assembly
GB2493974B (en) 2011-08-26 2014-01-15 Dyson Technology Ltd Bearing assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA977909A (en) * 1972-08-18 1975-11-18 Christopher R. Smallbone Motor-fan device for vacuum cleaners
US3874023A (en) * 1973-09-13 1975-04-01 Hoover Co Resiliently mounted motor and fan arrangement for a canister cleaner or the like
US4120616A (en) * 1975-10-06 1978-10-17 Breuer Electric Manufacturing Company Vacuum cleaner-blower assembly with sound absorbing arrangement
DD157886A1 (de) * 1981-04-03 1982-12-15 Elektrogeraete Ingbuero Veb Motorgeblaeseeinheit
US4698534A (en) * 1985-02-22 1987-10-06 Ametek, Inc. Quiet by-pass vacuum motor
DE3923267A1 (de) * 1989-07-14 1991-01-24 Wap Reinigungssysteme Elektronisch kommutierter motor fuer staubsauger und dergleichen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3763946A1 (de) 2019-07-10 2021-01-13 LG Electronics Inc. Motorventilator
EP3763947A1 (de) 2019-07-10 2021-01-13 LG Electronics Inc. Motorventilator und herstellungsverfahren dafür
US11510542B2 (en) 2019-12-24 2022-11-29 X'pole Precision Tools Inc. Exhaust motor of vacuum device
EP3849065A1 (de) 2020-01-09 2021-07-14 X'Pole Precision Tools Inc. Abgasmotor einer vakuumvorrichtung
AU2020289847A1 (en) * 2020-10-22 2022-05-12 Lg Electronics Inc. Fan motor
AU2020289847B2 (en) * 2020-10-22 2022-11-24 Lg Electronics Inc. Fan motor

Also Published As

Publication number Publication date
TR200000364A3 (tr) 2000-09-21
ATE341987T1 (de) 2006-11-15
DE60031187T2 (de) 2007-08-30
IT1307675B1 (it) 2001-11-14
DK1025792T3 (da) 2007-02-19
EP1025792A2 (de) 2000-08-09
DE60031187D1 (de) 2006-11-23
EP1025792A3 (de) 2002-05-29
ITMI990237A1 (it) 2000-08-08
TR200000364A2 (tr) 2000-09-21

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