EP3710705B1 - Method for assembling a water pump - Google Patents
Method for assembling a water pump Download PDFInfo
- Publication number
- EP3710705B1 EP3710705B1 EP18795351.8A EP18795351A EP3710705B1 EP 3710705 B1 EP3710705 B1 EP 3710705B1 EP 18795351 A EP18795351 A EP 18795351A EP 3710705 B1 EP3710705 B1 EP 3710705B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hooks
- sleeve
- slots
- axial
- stator
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 26
- 238000000034 method Methods 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 description 8
- 238000004891 communication Methods 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920009788 PA66 GF30 Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0653—Units comprising pumps and their driving means the pump being electrically driven the motor being flooded
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0686—Mechanical details of the pump control unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0693—Details or arrangements of the wiring
-
- 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
- F04D29/08—Sealings
- F04D29/086—Sealings especially adapted for liquid pumps
-
- 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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/11—Kind or type liquid, i.e. incompressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking
Definitions
- the invention relates to a method for assembling a water pump with an impeller, driven by an electric machine, comprising a cover housing and a spiral housing with an inlet and an outlet and a sleeve in which a stator and a rotor of the electric machine are accommodated, and an electronic circuit board, which is mounted on the side away from the pump wheel and is covered by the cover housing, with the stator package being overmolded.
- water pumps include a stator and a rotor.
- the rotor is in communication with an impeller to move a fluid.
- the fluid enters the pump through an inlet in a volute, comes in contact with an impeller, and is moved through an outlet in the volute.
- the rotor and the stator are contained within a housing that is in communication with the volute.
- the rotor and stator are separated by a magnetic air gap, and the rotor and stator enclose rare earth metals so that the magnetic air gap between the rotor and stator can be bridged so that the rotor is rotated during use and so that the rotor, the stator, or both can be isolated from the fluids during use and can continue to operate.
- the use of rare earth elements can be damaged by the fluids, so the rare earth elements require additional packaging to prevent damage.
- US 9360015 B1 discloses an electric water pump and in particular an electric water pump with an improved wet liner so that the water pump does not have a housing.
- the electric water pump closes a pump rotor with a shaft.
- a wet liner surrounds the rotor and has a cover, a socket in which the rotor is housed, and a receptacle in communication with the shaft of the rotor so that the receptacle assists in supporting the shaft of a stator.
- the wet liner and the rotor are surrounded by a volute that covers an upper portion of the rotor, the wet liner, and the stator.
- the electric water pump further includes a rubber boot that covers a lower portion of the rotor, the wet liner, and the stator and is in communication with the scroll casing forming a cover.
- the aim of the invention is to provide a water pump with an optimized construction which is able to be assembled in a safe and simple manner.
- the solution provided is a method for assembling a water pump with an impeller, driven by an electric machine, comprising a cover housing and a spiral housing with an inlet and an outlet and a sleeve in which a stator and a rotor of the electric machine are accommodated, and an electronics board , which is mounted on the side away from the impeller and is covered by the cover housing, wherein the sleeve has a radially extending edge which comprises at least slots and lugs, which are formed as the slots on the outer circumference of the edge and partially surrounding two end faces of the slots walls are defined by the following steps: connecting the spiral housing to the sleeve by inserting axial hooks into the slots of the sleeve, rotating the spiral housing against the sleeve to fix the axial hooks, inserting radial hooks of the cover housing into the same slots.
- the assembly is easy to manage, and the device is securely fixed without screwing processes of clamping the part.
- the axial hooks are guided by the lugs that surround the slots so that the hooks can also be inserted quickly.
- the twisting takes place in the direction of the opening of the narrower legs of the L-shaped hooks in order to fix the hooks firmly on the edge of the cuff.
- the width of the axial hooks and the radial hooks together is just as wide as the slot in order to be firmly fixed and not to allow any radial or axial movements.
- the invention enables device assembly with reduced parts and effort. Due to the fact that parts are completely poured over, the heat exchange is better. This is also due to the fact that the size and weight of the water pump can be reduced compared to conventional die-cast pumps.
- the pump has a high resistance to vibrations.
- the water pump 2 includes a scroll 10, a collar 20, and a band clamp 22 that fixes the collar 20 and the scroll 10.
- the volute 10 includes an inlet 12 and an outlet 14.
- the scroll housing includes a power supply port 16.
- the volute casing 10 is connected to a sleeve 20 by means of a band clamp 22 and forms a cover 4 which encloses the internal components and includes a power supply connection 16 for accommodating a power supply line 46.
- the internal components of the caseless water pump 2 include a stator 24 press fit into the sleeve 20.
- the stator 24 surrounds a rotor 26.
- the rotor 26 is separated from the stator 24 by a wet liner 30.
- the rotor 26 and the stator 24 are separated by a magnetic air gap with a distance (A).
- the wet liner 30 prevents fluid from contacting the stator 24.
- the rotor 26 includes a shaft 38 and an impeller 28 for moving a fluid as the fluid enters through the inlet 12.
- the impeller 28 moves the fluid through the outlet 14 for use.
- An electronic circuit board 40 is located outside the wet liner 30, so that the electronic circuit board 40 is separated from all liquids inside the pump 2 without a housing
- the Figures 2 to 9 show an embodiment of the water pump with reduced parts, in particular without a wet liner, according to the invention.
- the pump 2 has a sleeve 20 which combines various functions: the sleeve defines the outer circumference of the pump, covers the stator 24 and performs a wet liner function and accommodates a rotor 26.
- a heat sink 5 is mounted in the cuff 20, in which a Rotor shaft 38 is mounted.
- a seal 6 in the form of an O-ring seals the heat sink 5 against the inner circumference of the cuff 20 in an opening 50.
- the cuff 20 has the shape of a cylindrical ring with the cylindrical opening 50 on the inside.
- the stator devices are located in the opening in the ring, the rotor 26 is mounted around the shaft 38.
- the pump sleeve is prepared by overmolding the stator 24, which eliminates air gaps between the various components such as stator pack 7, supply pins 9 and copper wires 8. Overmolding increases the heat dissipation of the stator.
- a first material M1 is poured over the stator core 7 during the process.
- the first material is a plastic material: PA66 GF30.
- the material is fiber-reinforced and has good thermal aging.
- the material M1 should have a high stiffness and dimensional stability and must be specified for the production of electrically insulating parts.
- the supply pins 9 are inserted and connected to the wires, and the winding of the wires 8 is completed.
- a second material M2 is poured over the package.
- the material M2 is, for example, PPS GF34, which has good resistance to aging, chemicals and radiation and forms a sleeve that is strong and rigid.
- a heat sink 5 with a shaft 38 is mounted along the inner circumference of the sleeve 20.
- the heat sink 5 is sealed against the cuff in the opening 50 with an O-ring 6.
- the underside of the sleeve including a bearing for the shaft 38 can be closed by the casting process.
- This closed solution can be used when temperatures are below about 90 ° to create a component that reduces the need for sealing.
- An electronic board 40 is mounted on the surface of the sleeve 20 on the heat sink 5 apart from the portion of the impeller 28.
- the volume of air trapped around the electronics board 40 is reduced. This leads to an increase in the heat transfer coefficient and a reduction in the total volume of the water pump.
- the electronic board can be mounted before the final overmolding process with the material M2 takes place.
- the electronic circuit board and a first section P1 of length L of the cuff is covered by a section of a cover housing 41, and a second section P2 of length L of the cuff is covered by a section of a spiral housing 10.
- the volute casing and the cover casing are sealed against the outer circumference of the sleeve with O-rings.
- Figure 6 the two central sections, the cuff 20 and the heat sink 6, are shown.
- Figure 6a shows in an exploded view the sleeve made of a plastic molding material with a cylindrical opening 50.
- the in Figure 6c in a cross section along AA Figure 6b More clearly seen opening 50 is adapted to pass through the heat sink 5 on one side as in FIG Fig. 6d shown to be closed.
- Figure 6e is the state after installing the heat sink 5 with the seal 6 in the opening of the cuff.
- Figure 13 shows a view from the underside of the sleeve after the heat sink is installed.
- an edge 43 is cast in the overmolding process of the stator 24.
- the edge 43 surrounds the entire circumference of the cuff 20 and extends to a larger diameter compared to the diameter of the cuff.
- the rim is part of the mounting and fixing devices discussed below.
- the rim 43 in this embodiment includes four lugs 42 surrounding slots 44 in the rim.
- the slots are arranged along a radial length and follow the radii of the collar.
- the lugs 42 are formed as walls surrounding the slots 44 on the outer circumference of the edge and partially surrounding two end surfaces of the slot.
- the volute 10 is shown as part of the final water pump.
- This spiral casing 10 comprises axial hooks 11 which are arranged on the outer circumference of the device.
- the axial hooks 11 are defined by hook structures 52 which are shaped like an L and which hooks extend along the diameter of the volute 10.
- the openings of the hook structures 52 are arranged around the diameter so that the hook openings, the direction of the smaller legs of the L of two adjacent axial hooks are each aligned spaced from one another in the same direction.
- the hooks 11 do not increase the diameter of the volute, but only extend along the axial direction.
- the cuff 20 has the edge 43 with the slots 44.
- the cover housing 41 is constructed with radial hooks 45, the openings of the radial hooks being aligned radially outside the diameter of the cover housing 41.
- the radial hooks are mounted by means of tabs 53 which are fixed on the outside of the cover housing and provide a defined flexibility. Normally, the radial hooks are cast with the lid housing in one step.
- Fig. 7 , 8th and 9 explains the assembly process of the water pump.
- the spiral housing 10 with the axial hooks 11 is placed on the sleeve 20, and the axial hooks 11 enter the slots in the edge 43 of the sleeve.
- the slots 44 have projections 42 in order to better guide the axial hooks 11.
- the hooks 11 are inserted so deep that the smaller legs of the L-shaped axial hooks are completely inserted through the slots.
- the slots are wide enough to easily receive the hooks.
- the two parts, sleeve 20 and spiral housing 10 are rotated along their central axis in the direction of the hook openings so that the smaller leg of the L-shaped axial hook overlaps the edge of the sleeve, as in FIG Figure 8c visible.
- volute casing is thus fixed to the cuff.
- the slot 44 in the edge 43 remains sufficiently wide to be able to snap onto the radial hook 45 of the cover housing 41 as a snap lock.
- the radial hooks 45 are flexible and it is possible to push them through the remaining space in the slot 44 to be fixed by the outwardly extending hook projections.
- the assembly and fixing method works with the two types of hooks in the two cover parts, which together have a width b1 and b2, in order to fill the space in the slots in the edge.
- the hooks on the top cover block rotation of the volute back to its original mounting position and complete the water pump assembly process.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Zusammenbau einer Wasserpumpe mit einem Pumpenrad, angetrieben von einer Elektromaschine, umfassend ein Deckelgehäuse und ein Spiralgehäuse mit einem Einlass und einem Auslass und einer Manschette, in der ein Stator und ein Rotor der Elektromaschine untergebracht sind, und eine Elektronikplatine, die an der Seite abseits vom Pumpenrad montiert ist und vom Deckelgehäuse abgedeckt ist, wobei das Statorpaket übergossen ist.The invention relates to a method for assembling a water pump with an impeller, driven by an electric machine, comprising a cover housing and a spiral housing with an inlet and an outlet and a sleeve in which a stator and a rotor of the electric machine are accommodated, and an electronic circuit board, which is mounted on the side away from the pump wheel and is covered by the cover housing, with the stator package being overmolded.
Im Allgemeinen schließen Wasserpumpen einen Stator und einen Rotor ein. Der Rotor steht mit einem Pumpenrad in Kommunikation, um ein Fluid zu bewegen. Das Fluid tritt in die Pumpe durch einen Einlass in einem Spiralgehäuse ein, kommt mit einem Pumpenrad in Kontakt und wird durch einen Auslass im Spiralgehäuse bewegt. Der Rotor und der Stator sind innerhalb eines Gehäuses enthalten, das mit dem Spiralgehäuse in Verbindung steht. Im Allgemeinen sind der Rotor und der Stator durch einen magnetischen Luftspalt getrennt, und der Rotor und der Stator schließen Seltenerdmetalle ein, so dass der magnetische Luftspalt zwischen dem Rotor und dem Stator überbrückt werden kann, so dass der Rotor während der Verwendung rotiert wird und so dass der Rotor, der Stator oder beide während der Verwendung von den Fluiden isoliert sein können und den Betrieb aufrechterhalten können. Die Verwendung von Seltenerdmetallen kann jedoch durch die Fluide beschädigt werden, so dass die Seltenerdmetalle eine zusätzliche Verpackung erfordern, damit ein Schaden verhindert werden kann.Generally, water pumps include a stator and a rotor. The rotor is in communication with an impeller to move a fluid. The fluid enters the pump through an inlet in a volute, comes in contact with an impeller, and is moved through an outlet in the volute. The rotor and the stator are contained within a housing that is in communication with the volute. Generally, the rotor and stator are separated by a magnetic air gap, and the rotor and stator enclose rare earth metals so that the magnetic air gap between the rotor and stator can be bridged so that the rotor is rotated during use and so that the rotor, the stator, or both can be isolated from the fluids during use and can continue to operate. However, the use of rare earth elements can be damaged by the fluids, so the rare earth elements require additional packaging to prevent damage.
Ferner gehören
Ziel der Erfindung ist das Bereitstellen einer Wasserpumpe mit einer optimierten Konstruktionsweise, die in der Lage ist, auf sichere Weise und einfach zusammengesetzt zu werden.The aim of the invention is to provide a water pump with an optimized construction which is able to be assembled in a safe and simple manner.
Die bereitgestellte Lösung ist ein Verfahren zum Zusammenbau einer Wasserpumpe mit einem Pumpenrad, angetrieben von einer Elektromaschine, umfassend ein Deckelgehäuse und ein Spiralgehäuse mit einem Einlass und einem Auslass und eine Manschette, in der ein Stator und ein Rotor der Elektromaschine untergebracht sind, und eine Elektronikplatine, die an der Seite abseits vom Pumpenrad montiert ist und vom Deckelgehäuse abgedeckt ist, wobei die Manschette einen sich radial erstreckenden Rand aufweist, der wenigstens Schlitze und Ansätze umfasst, die als die Schlitze am Außenumfang des Rands und teilweise zwei Endflächen der Schlitze umgebende Wände ausgebildet sind, definiert durch die folgenden Schritte: Verbinden des Spiralgehäuses mit der Manschette durch Einführen von axialen Haken in die Schlitze der Manschette, Verdrehen des Spiralgehäuses gegen die Manschette zum Fixieren der axialen Haken, Einführen radialer Haken des Deckelgehäuses in dieselben Schlitze.The solution provided is a method for assembling a water pump with an impeller, driven by an electric machine, comprising a cover housing and a spiral housing with an inlet and an outlet and a sleeve in which a stator and a rotor of the electric machine are accommodated, and an electronics board , which is mounted on the side away from the impeller and is covered by the cover housing, wherein the sleeve has a radially extending edge which comprises at least slots and lugs, which are formed as the slots on the outer circumference of the edge and partially surrounding two end faces of the slots walls are defined by the following steps: connecting the spiral housing to the sleeve by inserting axial hooks into the slots of the sleeve, rotating the spiral housing against the sleeve to fix the axial hooks, inserting radial hooks of the cover housing into the same slots.
Die Montage ist einfach zu bewältigen, und die Vorrichtung wird ohne Schraubprozesse des Klemmens des Teils sicher fixiert.The assembly is easy to manage, and the device is securely fixed without screwing processes of clamping the part.
Es ist vorteilhaft, dass die axialen L-förmigen Haken mit den kleineren Schenkeln des L am Rand der Manschette fixiert werden.It is advantageous that the axial L-shaped hooks are fixed with the smaller legs of the L on the edge of the cuff.
Es ist vorteilhaft, dass die axialen Haken von den Ansätzen geführt werden, die die Schlitze umgeben, so dass die Haken ebenfalls schnell eingeführt werden können.It is advantageous that the axial hooks are guided by the lugs that surround the slots so that the hooks can also be inserted quickly.
Das Verdrehen erfolgt in Richtung der Öffnung der schmaleren Schenkel der L-förmigen Haken, um die Haken fest am Rand der Manschette zu fixieren.The twisting takes place in the direction of the opening of the narrower legs of the L-shaped hooks in order to fix the hooks firmly on the edge of the cuff.
Es ist vorteilhaft, dass die Breite der axialen Haken und der radialen Haken gemeinsam genauso breit wie der Schlitz ist, um fest fixiert zu werden und keine radialen oder axialen Bewegungen zu ermöglichen.It is advantageous that the width of the axial hooks and the radial hooks together is just as wide as the slot in order to be firmly fixed and not to allow any radial or axial movements.
Die Erfindung ermöglicht einen Vorrichtungszusammenbau mit reduzierten Teilen und reduziertem Aufwand. Aufgrund der Tatsache, dass Teile vollständig übergossen sind, ist der Wärmeaustausch besser. Dies ist ebenso auf die Tatsache zurückzuführen, dass die Größe reduziert werden kann und das Gewicht der Wasserpumpe im Vergleich zu herkömmlichen mit Druckguss hergestellten Pumpen geringer ist. Die Pumpe weist eine hohe Festigkeit gegenüber Vibrationen auf.The invention enables device assembly with reduced parts and effort. Due to the fact that parts are completely poured over, the heat exchange is better. This is also due to the fact that the size and weight of the water pump can be reduced compared to conventional die-cast pumps. The pump has a high resistance to vibrations.
Die Erfindung ist in den Figuren und der nachstehenden Beschreibung beschrieben.
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Fig. 1 zeigt eine Wasserpumpe nach dem Stand der Technik und stellt eine Querschnittansicht einergehäuselosen Wasserpumpe 2 dar, -
Fig. 2 zeigt eine Wasserpumpe nach der Erfindung, -
Fig. 3 zeigt einen Querschnitt der Wasserpumpe, -
Fig. 4 und Fig. 5 zeigen eine Explosionsdarstellung -
Fig. 6 zeigt die beiden zentralen Abschnitte der Pumpe.
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Fig. 1 shows a water pump according to the prior art and shows a cross-sectional view of acaseless water pump 2, -
Fig. 2 shows a water pump according to the invention, -
Fig. 3 shows a cross section of the water pump, -
FIGS. 4 and 5 show an exploded view -
Fig. 6 shows the two central sections of the pump.
Die Wasserpumpe 2 schließt ein Spiralgehäuse 10, eine Manschette 20 und eine Bandschelle 22, die die Manschette 20 und das Spiralgehäuse 10 befestigt, ein. Das Spiralgehäuse 10 schließt einen Einlass 12 und einen Auslass 14 ein. Das Spiralgehäuse schließt einen Stromversorgungsanschluss 16 ein.The
Das Spiralgehäuse 10 ist mit einer Manschette 20 mittels einer Bandschelle 22 verbunden und bildet eine Abdeckung 4, die die internen Komponenten umschließt und einen Stromversorgungsanschluss 16 zum Unterbringen einer Stromzuleitung 46 einschließt. Die internen Komponenten der gehäuselosen Wasserpumpe 2 schließen einen in die Manschette 20 eingepressten Stator 24 ein. Der Stator 24 umgibt einen Rotor 26. Der Rotor 26 ist vom Stator 24 durch eine nasse Laufbuchse 30 getrennt. Der Rotor 26 und der Stator 24 sind durch einen magnetischen Luftspalt mit einem Abstand (A) getrennt. Die nasse Laufbuchse 30 verhindert, dass Fluid den Stator 24 berührt. Der Rotor 26 schließt eine Welle 38 und ein Pumpenrad 28 zum Bewegen eines Fluids, wenn das Fluid durch den Einlass 12 eintritt, ein. Das Pumpenrad 28 bewegt das Fluid durch den Auslass 14 für die Verwendung. Eine Elektronikplatine 40 liegt außerhalb der nassen Laufbuchse 30, so dass die Elektronikplatine 40 von allen Flüssigkeiten innerhalb der gehäuselosen Pumpe 2 getrennt ist.The
Die
Die Manschette 20 weist die Form eines zylindrischen Rings mit der zylindrischen Öffnung 50 auf der Innenseite auf.The
Im Ring befinden sich die Vorrichtungen des Stators in der Öffnung, der Rotor 26 ist um die Welle 38 montiert.The stator devices are located in the opening in the ring, the
Die Pumpenmanschette wird durch Übergießen des Stators 24 vorbereitet, was Luftspalte zwischen den verschiedenen Komponenten wie Statorpaket 7, Versorgungspins 9 und Kupferdrähten 8 beseitigt. Das Übergießen erhöht die Wärmeableitung des Stators.The pump sleeve is prepared by overmolding the
Das Statorpaket 7 wird während des Prozesses mit einem ersten Material M1 übergossen. Das erste Material ist beispielsweise ein Kunststoffmaterial: PA66 GF30. Das Material ist faserverstärkt und weist eine gute thermische Alterung auf. Das Material M1 sollte eine hohe Steifigkeit und Formbeständigkeit aufweisen und muss für das Herstellen von elektrisch isolierenden Teilen spezifiziert sein.A first material M1 is poured over the
Nach diesem ersten Schritt des Übergießens des Statorpakets 7 werden die Versorgungspins 9 eingeführt und mit den Drähten verbunden, und die Wicklung der Drähte 8 wird abgeschlossen. Nach der Kontaktierung der Drähte und Pins und einer elektrischen Kontrolle wird das Paket mit einem zweiten Material M2 übergossen. Das Material M2 ist beispielsweise PPS GF34, das eine gute Festigkeit gegenüber Alterung, Chemikalien und Bestrahlung aufweist und eine Manschette bildet, die stark und starr ist.After this first step of overmolding the
Nachdem die Manschette als übergossenes einstückiges Teil vervollständigt ist, wird eine Wärmesenke 5 mit einer Welle 38 entlang des Innenumfangs der Manschette 20 montiert.After the sleeve has been completed as an overmolded one-piece part, a
Die Wärmesenke 5 ist in der Öffnung 50 mit einem O-Ring 6 gegen die Manschette abgedichtet.The
Alternativ zu der Lösung mit der separaten Wärmesenke 5 kann die Unterseite der Manschette eine Lagerung für die Welle 38 einschließend durch den Gussprozess geschlossen werden.As an alternative to the solution with the
Diese geschlossene Lösung kann angewendet werden, wenn Temperaturen unter etwa 90° liegen, um einen Bestandteil zu erzeugen, der die Notwendigkeit zur Abdichtung verringert.This closed solution can be used when temperatures are below about 90 ° to create a component that reduces the need for sealing.
Eine Elektronikplatine 40 ist an der Oberfläche der Manschette 20 an der Wärmesenke 5 abseits vom Abschnitt des Pumpenrads 28 montiert.An
Das Volumen an um die Elektronikplatine 40 eingeschlossener Luft wird reduziert. Dies führt zu einer Erhöhung des Wärmeübergangskoeffizienten und einer Reduzierung des Gesamtvolumens der Wasserpumpe. In Fällen, wo es notwendig ist, die Volumina mit Kunststoffgussmaterial zu füllen, um die Komponenten zu stabilisieren, kann die Elektronikplatine montiert werden, bevor der letzte Übergussprozess mit dem Material M2 stattfindet.The volume of air trapped around the
Die Elektronikplatine und ein erster Abschnitt P1 der Länge L der Manschette ist durch einen Abschnitt eines Deckelgehäuses 41 abgedeckt, ein zweiter Abschnitt P2 der Länge L der Manschette ist durch einen Abschnitt eines Spiralgehäuses 10 abgedeckt. Das Spiralgehäuse und das Deckelgehäuse sind mit O-Ringen gegen den Außenumfang der Manschette abgedichtet.The electronic circuit board and a first section P1 of length L of the cuff is covered by a section of a
In
Der Rand 43 umgibt den gesamten Umfang der Manschette 20 und erstreckt sich im Vergleich zum Durchmesser der Manschette auf einen größeren Durchmesser. Der Rand ist Teil der Montage- und Fixierungsvorrichtungen, die im weiteren Verlauf erörtert werden. Der Rand 43 schließt in dieser Ausführungsform vier Ansätze 42 ein, die Schlitze 44 im Rand umgeben. Die Schlitze sind entlang einer radialen Länge angeordnet und folgen den Radien der Manschette. Die Ansätze 42 sind als die Schlitze 44 am Außenumfang des Rands und teilweise zwei Endflächen des Schlitzes umgebende Wände ausgebildet.The
In den
Zum Zusammenbauen der Wasserpumpe weist die Manschette 20 den Rand 43 mit den Schlitzen 44 auf. Das Deckelgehäuse 41 ist mit radialen Haken 45 konstruiert, wobei die Öffnungen der radialen Haken radial außerhalb des Durchmessers des Deckelgehäuses 41 ausgerichtet sind.To assemble the water pump, the
Die radialen Haken sind mittels Laschen 53 montiert, die an der Außenseite des Deckelgehäuses fixiert sind und eine definierte Flexibilität bereitstellen. Normalerweise werden die radialen Haken mit dem Deckelgehäuse in einem Schritt gegossen.The radial hooks are mounted by means of
In
Dieses Einführen wird zudem dadurch unterstützt, dass die Haken ausgebildet sind, um der Umfangskontur des Spiralgehäuses zu folgen,
In einem zweiten Schritt werden die beiden Teile, Manschette 20 und Spiralgehäuse 10, entlang ihrer Mittelachse in Richtung der Hakenöffnungen verdreht, so dass der kleinere Schenkel der L-förmigen axialen Haken den Rand der Manschette überlappt, wie in
Somit ist das Spiralgehäuse an der Manschette fixiert.The volute casing is thus fixed to the cuff.
Der Schlitz 44 im Rand 43 verbleibt ausreichend breit, um in der Lage zu sein, an den radialen Haken 45 des Deckelgehäuses 41 als Schnappverschluss einzuschnappen.The
Die radialen Haken 45 sind flexibel, und es ist möglich, sie durch den verbleibenden Raum im Schlitz 44 zu drücken, damit sie durch die sich auswärts erstreckenden Hakenvorsprünge fixiert werden.The radial hooks 45 are flexible and it is possible to push them through the remaining space in the
Das Montage- und Fixierverfahren funktioniert mit den zwei Hakentypen in den zwei Abdeckungsteilen, die zusammen eine Breite b1 und b2 aufweisen, um den Raum in den Schlitzen im Rand auszufüllen.The assembly and fixing method works with the two types of hooks in the two cover parts, which together have a width b1 and b2, in order to fill the space in the slots in the edge.
Die Haken des Deckelgehäuses blockieren eine Rotation des Spiralgehäuses zurück zur ursprünglichen Montageposition und schließen den Wasserpumpen-Zusammenbauprozess ab.The hooks on the top cover block rotation of the volute back to its original mounting position and complete the water pump assembly process.
- 22
- Wasserpumpewater pump
- 44th
- Abdeckungcover
- 55
- WärmesenkeHeat sink
- 66th
- Dichtungpoetry
- 77th
- StatorpaketStator package
- 88th
- DrähteWires
- 99
- PinsPins
- 1010
- SpiralgehäuseVolute casing
- 1111
- axialer Hakenaxial hook
- 1212th
- Einlassinlet
- 1414th
- AuslassOutlet
- 1616
- StromversorgungsanschlussPower supply connection
- 2020th
- Manschettecuff
- 2222nd
- Schelleclamp
- 2424
- Statorstator
- 2626th
- Rotorrotor
- 3030th
- nasse Laufbuchsewet liner
- 3838
- Wellewave
- 2828
- PumpenradImpeller
- 4040
- ElektronikplatineElectronics board
- 4141
- DeckelgehäuseCover housing
- 4242
- Ansatzapproach
- 4343
- Randedge
- 4444
- Schlitzslot
- 4545
- radialer Hakenradial hook
- 4646
- Zufuhrsupply
- 5050
- Öffnungopening
- 5252
- HakenvorrichtungenHook devices
- 5353
- LascheTab
- M1M1
- erstes Materialfirst material
- M2M2
- zweites Materialsecond material
Claims (7)
- Method for assembling a water pump (2) having an impeller (28) driven by an electric machine (41) and a volute casing (10) with an inlet (12) and an outlet (14) and a sleeve (20) in which a stator (24) and a rotor (26) of the electric machine are housed, and an electronic circuit board (40) which is mounted on the side away from the impeller (28) and covered by the cover housing (41), wherein the sleeve (20) has a radially extending edge (43) which comprises at least slots (44) and lugs (42) which are formed as walls surrounding the slots (44) on the outer circumference of the edge (43) and, partially, two end faces of the slots (44), defined by the following steps:• Connecting the volute casing (10) with the sleeve (20) by introducing axial hooks (11) into the slots (44) of the sleeve• Twisting the volute casing (10) against the sleeve (20) in order to fix the axial hooks (11),• Inserting radial hooks (45) of the cover housing (41) into the same slots (44).
- Method according to claim 1, wherein the axial L-shaped hooks (11) are fixed on the edge (43) of the sleeve (29) with the shorter legs of the L.
- Method according to claim 1 or 2, wherein the axial hooks (11) are guided by the lugs (42) which surround the slots (44).
- Method according to one of the preceding claims, wherein the twisting takes place in the direction of the opening of the shorter legs of the L-shaped hooks (11).
- Method according to one of the preceding claims, wherein the radial hooks (45) are guided by the lugs (42) which surround the slots (44) and the axial hooks (11).
- Method according to one of the preceding claims, wherein the width of the axial hooks (11) and the radial hooks (45) together is as wide as the slot (44).
- Method according to one of the preceding claims, wherein the stator package (7) is cast with a first plastic material (M1) and at least the stator package (7), the wires (8) and pins (9) are, before assembly of the other parts, cast with a second plastic material (M2) to form a cylindrical annular sleeve (20) and a heat sink (5) which seals a cylindrical opening (50) of the sleeve (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017220156.8A DE102017220156B4 (en) | 2017-11-13 | 2017-11-13 | Method of assembling a water pump |
PCT/EP2018/078806 WO2019091762A1 (en) | 2017-11-13 | 2018-10-19 | Method for assembling a water pump |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3710705A1 EP3710705A1 (en) | 2020-09-23 |
EP3710705B1 true EP3710705B1 (en) | 2021-12-01 |
Family
ID=64049096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18795351.8A Active EP3710705B1 (en) | 2017-11-13 | 2018-10-19 | Method for assembling a water pump |
Country Status (6)
Country | Link |
---|---|
US (1) | US11525460B2 (en) |
EP (1) | EP3710705B1 (en) |
KR (1) | KR102312549B1 (en) |
CN (1) | CN111386399B (en) |
DE (1) | DE102017220156B4 (en) |
WO (1) | WO2019091762A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6276908B1 (en) * | 1997-10-10 | 2001-08-21 | Rule Industries, Inc. | Latching mechanism for use with pumps used in marine environments |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3524515A1 (en) * | 1985-07-09 | 1987-01-15 | Thyssen Plastik Anger Kg | WATER PUMP OR THE LIKE |
US5049770A (en) | 1990-03-26 | 1991-09-17 | General Motors Corporation | Electric motor-driven impeller-type air pump |
FR2813718B1 (en) | 2000-09-06 | 2003-09-19 | Meritor Light Vehicle Sys Ltd | ELECTRIC MOTOR COMPRISING IMPROVED MECHANISMS FOR ATTACHING AN END FLANGE TO A STATOR CARCASS |
WO2004008603A2 (en) * | 2002-07-12 | 2004-01-22 | Black & Decker Inc. | Dynamoelectric machine having an encapsulated coil structure |
DE102005039557A1 (en) | 2005-08-22 | 2007-03-01 | Robert Bosch Gmbh | rotary pump |
US7748965B2 (en) | 2005-10-17 | 2010-07-06 | Itt Manufacturing Enterprises, Inc. | Livewell/baitwell pump featuring rotating transom pickup tube |
DE102006008423A1 (en) * | 2006-02-23 | 2007-08-30 | Wilo Ag | Motorized centrifugal pump for pumping substances has a stack of contacts for a stator on an electric motor extrusion- coated with plastic fitted with cooling channels |
DE102007016255B4 (en) * | 2006-04-28 | 2012-11-29 | Bühler Motor GmbH | rotary pump |
JP5009725B2 (en) | 2007-01-30 | 2012-08-22 | アスモ株式会社 | Motor structure and method for assembling motor structure |
US9360015B2 (en) | 2012-07-16 | 2016-06-07 | Magna Powertrain Of America, Inc. | Submerged rotor electric water pump with structural wetsleeve |
DE102013014140A1 (en) | 2012-12-21 | 2014-06-26 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Electromotive water pump |
EP2882077A1 (en) | 2013-12-04 | 2015-06-10 | HILTI Aktiengesellschaft | Stator laminations with flow path barrier |
CN205064301U (en) * | 2015-10-13 | 2016-03-02 | 中山市创星电器有限公司 | Water pump |
CN106787565A (en) * | 2017-01-23 | 2017-05-31 | 徐州中矿大传动与自动化有限公司 | Anti- salient pole permanent magnet reluctance motor |
-
2017
- 2017-11-13 DE DE102017220156.8A patent/DE102017220156B4/en active Active
-
2018
- 2018-10-19 US US16/763,401 patent/US11525460B2/en active Active
- 2018-10-19 CN CN201880071987.2A patent/CN111386399B/en active Active
- 2018-10-19 WO PCT/EP2018/078806 patent/WO2019091762A1/en unknown
- 2018-10-19 KR KR1020207015110A patent/KR102312549B1/en active IP Right Grant
- 2018-10-19 EP EP18795351.8A patent/EP3710705B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6276908B1 (en) * | 1997-10-10 | 2001-08-21 | Rule Industries, Inc. | Latching mechanism for use with pumps used in marine environments |
Also Published As
Publication number | Publication date |
---|---|
WO2019091762A1 (en) | 2019-05-16 |
CN111386399B (en) | 2022-03-08 |
KR20200071125A (en) | 2020-06-18 |
EP3710705A1 (en) | 2020-09-23 |
KR102312549B1 (en) | 2021-10-15 |
US11525460B2 (en) | 2022-12-13 |
DE102017220156B4 (en) | 2023-05-17 |
CN111386399A (en) | 2020-07-07 |
DE102017220156A1 (en) | 2019-05-16 |
US20210071685A1 (en) | 2021-03-11 |
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