EP3559473A1 - Impeller and fan - Google Patents
Impeller and fanInfo
- Publication number
- EP3559473A1 EP3559473A1 EP18728365.0A EP18728365A EP3559473A1 EP 3559473 A1 EP3559473 A1 EP 3559473A1 EP 18728365 A EP18728365 A EP 18728365A EP 3559473 A1 EP3559473 A1 EP 3559473A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- motor shaft
- hub part
- hollow body
- blower
- 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
- 230000004323 axial length Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 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
- F04D29/26—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
-
- 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
- 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
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
Definitions
- the invention relates to an impeller of a fan with a hub part, which is designed as a hollow body enclosing a hollow body in one piece on the impeller and has an axis-central motor shaft receptacle for fastening receiving a motor shaft. Furthermore, the invention relates to a blower with a corresponding impeller.
- impellers of blowers are known in which separate hub parts are used to the interaction of shaft and hub with the impeller and a one-sided impeller storage greatlyu- put.
- the hub part must be mounted separately.
- the hub part at least partially covers the fan motor and prevents cooling on the axial side of the motor on which the hub part is placed.
- the invention is therefore based on the object to provide an impeller and a fan in which simplifies the assembly and cooling of a fan motor is also guaranteed on the side of the shaft-hub connection and the wheel bearing. This object is achieved by the feature combination according to claim 1.
- the impeller of a fan is arranged distributed with in the circumferential direction impeller blades and arranged around a rotational axis of the impeller hub part proposed as a hollow body enclosing a hollow body integrally formed on the impeller and has an axis-central motor shaft receptacle for mounting receiving a motor shaft.
- the motor shaft receptacle is thereby connected to the hollow body of the hub part in a radially radiating manner by the motor shaft receptacle through the hollow space extending radially outward connecting struts.
- the hub part is formed in one piece on the impeller, so that the operative connection between the motor shaft and the hub of the impeller is integrated into the impeller.
- the connection of the impeller or the motor shaft which can be arranged on the hub part to the rotor of the fan motor can take place in one work step.
- the hub part formed as a hollow body and the Motor shaft holder is held over the connecting struts.
- the hollow body provides an air space for cooling the fan motor adjoining the hub part.
- the connecting struts also create one
- the connecting struts are formed as a continuous cooling blades.
- the cooling vanes may be curved or curved in order to generate a flow in the cavity to specific components, for example the blower motor, or to its outer surface.
- the impeller is characterized in that the hollow body of the hub part has at least one recess on its lateral surface, so that the cavity is fluidly connected to a region of the impeller in which the impeller blades are arranged.
- the air can thus be directed out of the adjacent to the blower motor cavity of the hub part.
- the cooling capacity through the hub part is thereby significantly increased.
- the recesses are not small holes or unsealed edge slits, but rather sufficiently large passage openings for air exchange which are intended for air discharge and occupy a substantial proportion of the overall surface area.
- the recesses are provided distributed uniformly in the circumferential direction on the lateral surface.
- One or more of the recesses may also be shaped by their shape as a contact surface, ie a kind of investment Template, used in the assembly process further component.
- the component to be assembled may have a locally complementary shape in order to fix the position relative to the impeller.
- the connecting struts are advantageously over their entire axial length of the motor shaft receiving and the hollow body and thus ensure high rigidity and stability.
- the hub part has an axial outlet opening for the passage of the motor shaft and the motor shaft receptacle closes like a sleeve in the axial direction to the outlet opening.
- the motor shaft extends through the sleeve-like motor shaft receiving through the hub part and axially through the outlet opening, so that they outside of the hub part via a bearing, for example on
- Blower housing can be stored.
- the motor shaft receptacle extends through the hollow space of the hub part over the entire axial length of the hub part.
- the impeller is characterized in an embodiment by an extending about the axis of rotation of the impeller central portion having a receiving space which is adapted to receive at least parts of a motor.
- the central portion may be cylindrically shaped to surround a motor portion or to be placed on the blower motor.
- the hub part is advantageously formed as a one-piece, conical axial extension of the central portion of the impeller.
- the lateral surface of the hub part extends in the axial direction radially inwardly toward the axis of rotation of the impeller.
- the central portion and the hub part extend from an axially central parting plane of the impeller exclusively in an axial direction and provide an axially unilateral connection to the otorwelle.
- the impeller determines an embodiment on one axial side adjacent to a radially inner edge of the impeller blades receiving space into which the hub part extends.
- the impeller blades also have an axial length that they extend the hub portion in the axial direction.
- the motor shaft receptacle is positively connected to the motor shaft.
- the motor shaft can be injection-molded with the motor shaft holder.
- the invention additionally comprises a fan with a fan housing and a fan motor arranged therein as well as an above-described impeller, wherein the impeller encloses the fan motor radially on the outside and is mounted double on a single axial side.
- FIG. 1 shows a perspective view of a partially cutaway wheel
- FIG. Figure 2 is a perspective view of the impeller of Figure 1 arranged in a partially cut fan.
- Fig. 3 is a side view of the blower partially shown in Fig. 2.
- Like reference numerals designate like parts throughout the views.
- FIG. 1 shows an embodiment of a partially cut impeller 1 in a perspective view.
- the structure of the impeller 1 is separated by an axially central dividing plane 1 1, which serves as a reference plane.
- the impeller 1 may be integrally formed.
- the impeller 1 has impeller blades 7 arranged distributed in the radial outer section in the circumferential direction and extending over the entire axial length of the respective axial part of the impeller 1.
- the axis-central motor shaft receptacle 12 is arranged and connected to the hollow body of the hub part 2 via the radially extending radially outwardly through the cavity connecting struts 10.
- two identically shaped, opposite full-surface continuous cooling vanes are used as connecting struts 10, which are fastened substantially over their entire axial length along both the motor shaft receptacle 12 and the hollow body of the hub part 2.
- the motor shaft holder 12 extends over the entire axial length of the hub part. 2
- the hub part 2 forms a dome-shaped, conical axial extension of the central portion 9 of the impeller 1 and extends into the receiving space 27 adjoining the radial inner edges of the impeller blades 7.
- the axial length of the impeller blades 7 is greater than the axial extent of the hub part 2, so that the impeller blades 7, the hub part 2 in the axial direction overstretch.
- the hub part 2 has on its lateral surface 5 at least a plurality of circumferentially distributed, identically shaped recesses 6, which produce a flow connection between the cavity of the hub part 2 to the region of the impeller blades 7.
- the recesses 6 extend in the axial direction substantially over the entire length of the hub part 2 and determine in the embodiment shown about 60% of the total circumferential surface of the hub part second
- the motor shaft 8 is positively connected to the sleeve-like motor shaft receptacle 12 and extends along the axis of rotation through the impeller 1. On both axial sides of the motor shaft 8 protrudes beyond the motor shaft receptacle 12 and projects in the region of the hub part 2 through the axial outlet opening 14 therethrough. At the axially outwardly of the outlet opening 14 projecting portion 16 a bearing 16 is arranged, via which the impeller 1 is mounted on the fan housing 51, as shown in Fig. 2.
- stiffening peripheral rings 17 are provided on the outside, which comprise seen in cross section a plurality of circumferential recess grooves.
- FIG. 2 a perspective view of the impeller 1 of FIG. 1 is shown in a partially cut-away blower 50.
- the blower housing 51 comprises an inlet opening 42 over which a integrally formed on the blower housing guard 52 extends with radial and circumferential struts.
- a bearing receptacle 33 is provided on the fan housing 51 with a bearing bush 44, in which a vibration-decoupling
- Elastomer element 77 is used.
- the elastomeric element 77 has axial ribs 99, against which the bearing 16 is set.
- the fan housing 51 is stiffened over the peripheral ring 31 and the radial ribs 32, so that the housing wall thickness can be kept as low as possible.
- the motor shaft is mounted via a second bearing 30, so that the impeller 1 is double-mounted on a single one of its two axial sides.
- FIG. 3 shows the blower 50 partially shown in FIG. 2 in a side view.
- the blower 50 is designed as a radial blower and sucks via the inlet opening 42 through the protective grille 52 air, which is blown out via the blow-out opening 72.
- the bearing receptacle 33 is held in one piece on the fan housing part 1 via three webs extending in a star shape at 120 ° to each other, the inlet opening 42 extending over.
- the webs 59 extend in the same axial plane as the protective grid 52 and form an integral part of the protective grid 52.
- a connecting cable 71 is inserted for the blower motor and in the embodiment shown by a Cable 71 covered crossbar held.
- the edge webs and the transverse web form guiding and retaining means for the cable 71.
- the connecting plug 73 is also shown on the cable 71.
- an axial passage opening 74 for the passage of the cable 71 in the direction of the fan motor into the interior of the fan housing 51 is provided.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017112987.1A DE102017112987A1 (en) | 2017-06-13 | 2017-06-13 | Impeller and blower |
PCT/EP2018/064169 WO2018228819A1 (en) | 2017-06-13 | 2018-05-30 | Impeller and fan |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3559473A1 true EP3559473A1 (en) | 2019-10-30 |
EP3559473B1 EP3559473B1 (en) | 2022-04-27 |
Family
ID=61743255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18728365.0A Active EP3559473B1 (en) | 2017-06-13 | 2018-05-30 | Impeller and fan |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3559473B1 (en) |
CN (1) | CN207178294U (en) |
DE (1) | DE102017112987A1 (en) |
WO (1) | WO2018228819A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3107756B1 (en) * | 2020-02-28 | 2022-02-11 | Valeo Systemes Thermiques | Motorized fan assembly with contact element in contact with a fan wheel and a rotor cup, for heating, ventilation and/or air conditioning installation of a motor vehicle |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3427565A1 (en) * | 1984-07-26 | 1986-02-06 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Radial-flow fan driven by an electric motor |
DE8801730U1 (en) * | 1988-02-11 | 1989-06-15 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
US20110116928A1 (en) * | 2009-11-16 | 2011-05-19 | Robert Bosch Gmbh | Open-hub centrifugal blower assembly |
DE102013104849A1 (en) * | 2012-06-20 | 2013-12-24 | Vorwerk & Co. Interholding Gmbh | Fan wheel and electric motor |
-
2017
- 2017-06-13 DE DE102017112987.1A patent/DE102017112987A1/en not_active Withdrawn
- 2017-09-06 CN CN201721137762.1U patent/CN207178294U/en active Active
-
2018
- 2018-05-30 EP EP18728365.0A patent/EP3559473B1/en active Active
- 2018-05-30 WO PCT/EP2018/064169 patent/WO2018228819A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3559473B1 (en) | 2022-04-27 |
CN207178294U (en) | 2018-04-03 |
WO2018228819A1 (en) | 2018-12-20 |
DE102017112987A1 (en) | 2018-12-13 |
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