EP2149192A2 - Lüftungseinheit zur fremdbelüftung eines elektromotors - Google Patents
Lüftungseinheit zur fremdbelüftung eines elektromotorsInfo
- Publication number
- EP2149192A2 EP2149192A2 EP08716867A EP08716867A EP2149192A2 EP 2149192 A2 EP2149192 A2 EP 2149192A2 EP 08716867 A EP08716867 A EP 08716867A EP 08716867 A EP08716867 A EP 08716867A EP 2149192 A2 EP2149192 A2 EP 2149192A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ventilation unit
- inlet
- unit according
- fan
- receiving
- 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.)
- Ceased
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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/06—Helico-centrifugal pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
Definitions
- the present invention relates to a ventilation unit, in particular for the forced ventilation of electric motors, consisting of an electric motor with a trained as an internal rotor rotor with a motor shaft and a stator and an inlet grille, wherein the electric motor is mounted in a centrally disposed on the inlet grating receiving part at least partially, and Receiving part is closed by means of a bearing plate at its inlet grille far end and the motor shaft extends through the bearing plate to the outside and at its free end a fan is attached.
- Such a ventilation unit is known from DE 198 03 441 C1.
- the fan is designed as Axialllibraryerrad so that the air flow from the inlet into the inlet grille to the exit from the Axiallshareerrad in the axial direction.
- this ventilation unit generates relatively large flow noise and has a low efficiency.
- the present invention is based on the object to improve a ventilation unit of the type described above such that it is characterized by low flow noise and increased efficiency.
- the fan is designed as a diagonal fan and between the fan and the inlet grille a formed as an inlet nozzle, the receiving part comprehensive housing part is arranged.
- a flow guidance optimized in relation to flow losses and a pressure increase in the inlet area of the fan wheel take place.
- a further pressure increase takes place in the outlet area.
- FIG. 1 shows a longitudinal section through a ventilation unit according to the invention
- FIG. 2 is a front view according to arrow II in Fig. 1,
- Fig. 3 is a section of a fan wheel of an inventive
- Fig. 4 is a view of an inlet nozzle forming a housing part according to the invention.
- FIG. 5 is a view according to arrow V in Fig. 3rd
- a ventilation unit consists of an electric motor 1 and a fan wheel 2 connected to it and driven by it.
- the electric motor 1 is designed as an internal rotor and consists of an outer stator 3 and a rotor 3 rotatably mounted therein Rotor 4.
- Rotor 4 For the rotatable mounting of the rotor 4, this has a motor shaft 5 which extends centrally through the rotor 4 and which is mounted in a housing 6 enclosing the electric motor 1.
- the housing 6 consists of two parts, namely a receiving part 7 and a bearing plate 8 which can be connected to the receiving part 7.
- an inlet grid 9 is arranged in front of the electric motor 1.
- This inlet grille 9 has, as shown in Fig. 2, a circular peripheral contour and the receiving part 7 is arranged concentrically thereto.
- the receiving part 7 and the inlet grille 9 form a unit, so that they are integrally formed.
- the motor shaft 5 is mounted in a bearing lug 11 by means of a bearing 12.
- the motor shaft 5 passes through the bearing plate 8 and carries at its free end the fan 2 in the bearing plate 8, the motor shaft 5 is mounted in a bearing extension 13 by means of a bearing 14.
- the motor shaft 5 is sealed in this bearing extension 13 to the outside via a sealing unit 15, which also seals the gap to the interior of the housing 6.
- the bearing plate 8 is cup-shaped in the illustrated embodiment, so that from the end plate 8, a hollow cylindrical interior is included, which serves to receive a portion of the electric motor 1.
- the bearing plate 8 is preferably sealed to the receiving part 7 by means of screwed frontally sealed.
- the fan 2 is designed as a diagonal fan and between the fan 2 and the inlet grille 9 is designed as an inlet nozzle, the receiving part 7 comprehensive housing part 16 is arranged.
- the inlet nozzle 16 has an in particular circular outflow opening 17, which lies within an inlet opening 18 of the fan wheel 2, so that the inlet nozzle 16 ends with its outflow opening 17 within the fan wheel 2.
- an annular gap 19 with a small gap width is formed between the inlet opening 18 and the end of the inlet nozzle 16.
- the housing part 16 (inlet nozzle) has a likewise circular inflow opening 20 whose inside width substantially corresponds to the clear width of an inlet opening 21 formed in the inlet grille 9.
- the housing part 16 tapers from its inflow opening 20 to the outflow opening 17. See also Fig. 4.
- the housing wall of the housing part 16 consists of a from the inflow opening 20 of axially extending wall portion 16 a and one yourself adjoining substantially radially or obliquely in the direction of the motor shaft 5 extending wall portion 16b and a terminating in the outflow opening 17 axially extending portion 16c.
- the contour of the housing wall of the housing part 16 is shaped such that the lowest possible flow losses occur.
- the housing part 16 (inlet nozzle) is attached to the inlet grid 9 without gaps.
- the inlet grille 9, see FIG. 2, consists of a centric, closed cover section 22, on which radially outwardly extending spokes 23 are formed.
- the spokes 23 terminate in a circular support ring 24.
- the preferably equally spaced apart spokes 23 are in turn connected to each other by concentric with the support ring 24 extending struts 25.
- One of the spokes 23 is formed as a cable channel 26, so that an electrical connection cable 27 can be introduced from the outside into the electric motor 1.
- the one-piece design of the inlet grille 9 and the receiving part 7 allows effective cooling of the electric motor. 1
- a support plate 28 is integrally formed on the support ring 24, which extends parallel to the motor shaft 5 in the axial direction.
- a terminal hood 29 is releasably attached.
- the terminal hood 29 contains the connection terminals required for connection of the ventilation unit according to the invention and the electronic components required for the control of the electric motor 1.
- the fan 2 is designed as a diagonal fan. As a result, an air flow extending essentially obliquely to the longitudinal axis of the ventilation unit is generated within the wheel from its inlet opening 18 to its outlet opening 34, which is indicated by the arrows Y in FIG.
- the fan 2 consists of a bottom plate 30 which is circular in shape and which has a central projection 31 in which the motor shaft 5 is fixed. On the bottom plate 30 paddles 32 are formed, which end with their bottom plate 30 opposite ends in a cover plate 33, which limits the outside formed in the fan 2 flow channel.
- the diameter of the bottom disk 30 is smaller than the inlet opening 18 executed, so that the fan 2 can be advantageously manufactured inexpensively as a one-piece fan.
- the ventilation unit according to the invention is on a fan cover 35, which is formed as a hollow cylinder, and which belongs to an externally ventilated electric motor 36 shown in principle, the front side can be placed.
- receiving pockets 38 for receiving balance weights are formed on the front side.
- These receiving pockets 38 are, as can be seen from Fig. 5, circumferentially formed at short intervals.
- Further receiving pockets 39 for receiving balance weights are formed at the other end of the cover plate 33 such that they are rectified to the receiving pockets 38 and are also circumferentially arranged in large numbers at short intervals. Due to this design of the receiving pockets 38, 39 for balancing weights, a light insertion of the receiving pockets 38, 39 with balancing weights is possible, from the same side of the fan for both receiving pockets 38, 39.
- the training allows balancing in two levels.
- the outer receiving pockets 39 are present in a number of 90 and the inner receiving pockets 38 with a number of 66 in the illustrated embodiment.
- the inventive design of the ventilation unit ensures low flow noise and allows effective external cooling of a foreign-ventilated electric motor 36.
- the electric motor 1 of the ventilation unit according to the invention can also be speed-controlled as a function of the temperature.
- the electric motor used in the invention may be, for example, a regulated DC motor.
- the present invention is not limited to the exemplary embodiment shown, but includes all the same means in the context of the invention. Furthermore, the invention has hitherto not been limited to the feature combination defined in claim 1, but may also be defined by any other combination of specific features of all individually disclosed individual features. This basically means virtually every one Individual feature of claim 1 omitted or can be replaced by at least one disclosed elsewhere in the application individual feature. In this respect, the claim 1 is to be understood only as a first formulation attempt for an invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200720005784 DE202007005784U1 (de) | 2007-04-21 | 2007-04-21 | Lüftungseinheit zur Fremdbelüftung eines Elektromotors |
PCT/EP2008/051857 WO2008128797A2 (de) | 2007-04-21 | 2008-02-15 | Lüftungseinheit zur fremdbelüftung eines elektromotors |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2149192A2 true EP2149192A2 (de) | 2010-02-03 |
Family
ID=39595783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08716867A Ceased EP2149192A2 (de) | 2007-04-21 | 2008-02-15 | Lüftungseinheit zur fremdbelüftung eines elektromotors |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2149192A2 (de) |
DE (1) | DE202007005784U1 (de) |
WO (1) | WO2008128797A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102032211B (zh) * | 2010-12-15 | 2012-07-04 | 西安交通大学 | 吸油烟机用双锥形叶轮 |
CN103715829A (zh) * | 2013-12-31 | 2014-04-09 | 天津清源电动车辆有限责任公司 | 一种用于电动汽车轮毂电机风冷散热机构 |
CN106593889A (zh) * | 2016-12-29 | 2017-04-26 | 镇江福泰克流体技术有限公司 | 一种适用于中小流量工况的离心泵 |
CN208522559U (zh) * | 2018-04-17 | 2019-02-19 | 天佑电器(苏州)有限公司 | 清洁装置 |
DE102020104985A1 (de) * | 2020-02-26 | 2021-08-26 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Ventilatorrad eines Axial- oder Diagonalventilators mit Wuchtring |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB858640A (en) * | 1958-10-07 | 1961-01-11 | Jacobus Constant Van Rijn | Ventilating motor and fan |
DE2406489B2 (de) | 1974-02-12 | 1978-10-19 | Kurt Dr.-Ing.Habil. 3360 Osterode Tardel | Axial an elektrische Maschinen außenseitig anzubauende Lüftungseinrichtung |
DE4222131C3 (de) | 1992-07-06 | 2000-01-27 | Vem Motors Gmbh | Belüftungseinrichtung für die Druckbelüftung von oberflächenbelüfteten elektrischen Maschinen |
DE19803441C1 (de) | 1998-01-29 | 1999-06-24 | Wistro Elektro Mechanik Gmbh | Lüfterhaube eines fremdbelüfteten Elektromotors |
CA2412773C (en) * | 2000-06-15 | 2009-09-15 | Greenheck Fan Corporation | In-line centrifugal fan |
DE10150347A1 (de) | 2001-10-15 | 2003-04-17 | Militzer Otto Michael | Schwerer Lüfter für Drehstrommotore in Anlagen zur Personenbeförderung |
-
2007
- 2007-04-21 DE DE200720005784 patent/DE202007005784U1/de not_active Expired - Lifetime
-
2008
- 2008-02-15 WO PCT/EP2008/051857 patent/WO2008128797A2/de active Application Filing
- 2008-02-15 EP EP08716867A patent/EP2149192A2/de not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO2008128797A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008128797A3 (de) | 2009-03-19 |
WO2008128797A2 (de) | 2008-10-30 |
DE202007005784U1 (de) | 2008-08-21 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20091013 |
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Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SCHLER, CHRISTIAN Inventor name: HAMMEL, CHRISTIAN Inventor name: BOHL, KATRIN Inventor name: STILLGER, REINHARD |
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17Q | First examination report despatched |
Effective date: 20100128 |
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REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 20110908 |