CN105443400A - Electronic water pump - Google Patents
Electronic water pump Download PDFInfo
- Publication number
- CN105443400A CN105443400A CN201610050672.2A CN201610050672A CN105443400A CN 105443400 A CN105443400 A CN 105443400A CN 201610050672 A CN201610050672 A CN 201610050672A CN 105443400 A CN105443400 A CN 105443400A
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- China
- Prior art keywords
- impeller
- pump
- water pump
- electronic water
- sleeve
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000004804 winding Methods 0.000 claims abstract description 38
- 230000017525 heat dissipation Effects 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims description 54
- 239000000919 ceramic Substances 0.000 claims description 31
- 230000000712 assembly Effects 0.000 claims description 29
- 238000000429 assembly Methods 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 10
- 239000000565 sealant Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract 2
- 210000001503 joint Anatomy 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 19
- 239000002826 coolant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 229920006335 epoxy glue Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/0465—Ceramic bearing designs
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal 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
- F04D29/5806—Cooling the drive system
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an electronic water pump which comprises a motor shell, a stator winding, an isolation sleeve, an impeller rotor assembly and a pump cover, wherein the outer side of the motor shell is connected with a drive plate assembly; the stator winding is arranged on the inner side of the motor shell in a sleeving mode and electrically connected with the drive plate assembly and can generate a rotating magnetic field under the control of the drive plate assembly; the isolation sleeve is arranged on the inner side of the stator winding in a sleeving mode and internally provided with an annular cavity, the front end of the isolation sleeve is provided with an opening end, the rear end of the isolation sleeve is provided with a sealing end, and the center of the isolation sleeve is axially provided with a core shaft; the impeller rotor assembly is arranged in the annular cavity, can be rotatably arranged outside the core shaft in a sleeving mode and comprises an impeller and a rotor which is connected with the impeller and is opposite to the stator winding, and the rotor drives the impeller to rotate under the action of the rotating magnetic field; the pump cover is connected to the opening end of the isolation sleeve in a sealing mode and is in butt joint with the isolation sleeve to form a pump cavity for containing the impeller, and the pump cover is provided with a water inlet and a water outlet communicated with pump cavity. The electronic water pump is small in axial size, simple and compact in structure and good in heat dissipation performance.
Description
Technical field
The present invention relates to water pump field, especially a kind of electronic water pump of compact structure.
Background technique
Electronic water pump is widely used in the car radiation circulatory system, and what in heat dissipation circulating system, provide heat eliminating medium circulates power.After automobile starting, a large amount of heat-dissipating part such as motor, electronic control components and parts all can produce a large amount of heat, and these heats produced must be discharged in time by heat dissipation circulating system, a large amount of heat-dissipating part such as motor, electronic control components and parts is normally worked in certain temperature range, and electronic water pump is exactly the power source that radiation system heat-conducting medium circulates.
The water pump of the first prior art adopts brush motor as motivational drive, brush motor and impeller are split-type structural, the motor shaft of brush motor stretches in pump chamber through pump seat, and adopt machinery to be fixedly connected with the impeller in pump chamber, mechanical type rotating is adopted to seal between motor shaft and pump seat, prevent cooling medium in pump chamber from seepage between motor shaft and pump seat, thus realize motor shaft impeller and rotate in airtight pump chamber, cooling medium is driven to enter from water intake, discharge from water outlet, realize the flowing of cooling medium.Its defect existed is that axial dimension is large, and the axial space occupied is large, complex structure;
The water pump of the second prior art adopts brushless electric machine as motivational drive, brush motor and impeller are also split-type structural, but motor shaft does not stretch into pump chamber, the motor shaft of brushless electric machine installs the outer magnetic ring with magnet, impeller in pump chamber is also provided with magnet, isolated by pump seat between impeller and outer magnetic ring, that is impeller is in the pump chamber that pump seat and pump cover form, outer magnetic ring is outside pump chamber, magnet on outer magnetic ring is corresponding with the magnet on impeller, when motor shaft drives outer magnetic ring to rotate, magnet on outer magnetic ring assembly drives the corresponding rotation of impeller with magnet in pump chamber by magnetic, thus realize impeller and rotate in airtight pump chamber, cooling medium is driven to enter from water intake, discharge from water outlet, realize the flowing of cooling medium, namely motor and impeller adopt magnetic couple.Its defect existed is that axial dimension is large, and the axial space occupied is large, complex structure.
Summary of the invention
The object of this invention is to provide a kind of electronic water pump, its rotor and impeller are assembled as a whole, and rotor is directly driven by staor winding, and impeller is rotated, and axial dimension is little, compact structure.
For achieving the above object, the present invention proposes a kind of electronic water pump, comprising: motor casing, in tubular, is connected with drive plate assemblies outside it; Staor winding, is set in inside motor casing, and is electrically connected with drive plate assemblies, and can produce rotating magnetic field under the control of drive plate assemblies; Separation sleeve, is set in inside staor winding, and its inside has annular chamber, and the front end of separation sleeve is opening end, and rear end is closed end, and the central shaft of separation sleeve is to installation mandrel; Vane rotor assembly, is located in annular chamber, and can be set in outside mandrel rotationally, and vane rotor assembly comprises impeller and connects impeller and the rotor relative with staor winding, and rotor impeller under the effect of rotating magnetic field is rotated; Pump cover, is sealedly connected on the opening end of separation sleeve, and docks the pump chamber forming accommodating impeller with separation sleeve, pump cover offers the water inlet and water outlet that are communicated with pump chamber respectively.
Electronic water pump as above, wherein, the overcoat that separation sleeve comprises tubular and the central shaft that is connected to overcoat to the supporting portion of column, annular chamber is formed between overcoat and supporting portion, the central shaft of supporting portion is to wearing mandrel, the sheathed rotor in outside of supporting portion, staor winding and vane rotor assembly are isolated by overcoat.
Electronic water pump as above, wherein, vane rotor assembly also comprises: connecting sleeve, is connected with impeller, and one-body molded with impeller; Setting sleeve, is socketed in inside connecting sleeve, and is set in outside supporting portion, and rotor is coated between the outer side wall of setting sleeve and the madial wall of connecting sleeve.
Electronic water pump as above, wherein, the fixing bearing inner race be made up of stupalith outside supporting portion, fixes inside setting sleeve and is made up and the bearing outer ring coordinated with bearing inner race of stupalith, and bearing outer ring and bearing inner race form ceramic bearing.
Electronic water pump as above, wherein, ceramic bearing is two, and is respectively the first ceramic bearing being positioned at front end, supporting portion and the second ceramic bearing being positioned at rear end, supporting portion.
Electronic water pump as above, wherein, mandrel has the external part stretching out supporting portion, and impeller and pump cover are set in outside external part successively, pump cover against impeller, by impeller axially locating.
Electronic water pump as above, wherein, the cavity between separation sleeve and vane rotor assembly is heat dissipation cavity, and heat dissipation cavity and pump chamber form fluid flow passageway.
Electronic water pump as above, wherein, pump cover is scroll casing shape, and pump chamber is spiral case inner chamber, near the pressure in the region of water outlet in spiral case inner chamber, is greater than the pressure in the region near water inlet.
Electronic water pump as above, wherein, has filling chamber between staor winding and separation sleeve, fill in chamber and be provided with heat conductive insulating sealant layer.
Electronic water pump as above, wherein, be sealedly connected with flange plate between the front end of motor casing and pump cover, flange plate and separation sleeve are tightly connected.
Feature and the advantage of electronic water pump of the present invention are:
1, electronic water pump of the present invention, impeller and rotor compound are formed vane rotor assembly, vane rotor assembly is directly rotated by magneto drive by the staor winding in motor, separation sleeve can not only isolate vane rotor assembly and staor winding, also directly dock with pump cover and form complete water pump internal fluid channels, have pump seat function concurrently, thus the axial dimension of electronic water pump can be effectively reduced, make water pump structure simpler, compact;
2, electronic water pump of the present invention, arranges ceramic bearing inside vane rotor assembly, and ceramic bearing is the structure that ceramic bearing inner ring coordinates with ceramic bearing outer ring, high temperature resistant, and corrosion protection realizes non-maintaining, long service life;
3, electronic water pump of the present invention, the heat dissipation cavity internal circulation flow of fluid between separation sleeve and vane rotor assembly, takes away the heat of motor self and the heat of drive plate assemblies generation; Heat conductive insulating sealant layer is filled in filling chamber inside staor winding, and make complete machine temperature more even, heat-conducting effect is better; The heat conductive insulating sealer of the inner embedding of heat radiation bonnet, ensures the good heat radiating of drive plate assemblies; Be delivered to the heat of motor casing, dispelled the heat by radiating fin; Thus make electronic water pump of the present invention have excellent heat dispersion.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the schematic diagram of electronic water pump of the present invention;
Fig. 2 is the left view of electronic water pump in Fig. 1;
Fig. 3 is the right elevation of electronic water pump in Fig. 1;
Fig. 4 is the schematic diagram of separation sleeve in the present invention;
Fig. 5 is the left view of separation sleeve in Fig. 4;
Fig. 6 is the right elevation of separation sleeve in Fig. 4;
Fig. 7 is the schematic diagram of impeller rotor assembly in the present invention;
Fig. 8 be in Fig. 7 impeller rotor assembly along the sectional view of A-A line;
Fig. 9 is the right elevation of impeller rotor assembly in Fig. 7;
Figure 10 is the combination schematic diagram of separation sleeve and vane rotor assembly in the present invention;
Figure 11 is the schematic diagram of middle (center) bearing inner ring of the present invention;
Figure 12 is the sectional view of Figure 11 middle (center) bearing inner ring along B-B line;
Figure 13 is the schematic diagram of middle (center) bearing outer ring of the present invention;
Figure 14 is the sectional view of Figure 13 middle (center) bearing outer ring along C-C line.
Primary component label declaration:
1 motor casing 11 housing 12 dispels the heat bonnet
2 staor winding 20 heat conductive insulating sealant layers
3 separation sleeve 31 annular chamber 311 heat dissipation cavity
32 overcoat 33 supporting portion 34 setting sleeves
35 first thrust pads
4 vane rotor assembly 41 impeller 411 ostiums
42 rotor 421 rotor iron core 422 magnetic sheets
43 connecting sleeve 44 setting sleeve 45 bearing fixing sleeves
46 second thrust pad 47 plain cushions
5 pump cover 51 pump chamber 52 water inlets
53 water outlets
6 drive plate assemblies 7 mandrels
8 ceramic bearing 81 bearing inner race 82 bearing outer rings
9 flange plate 10 rear end cover 500 heat conductive insulating sealers
Embodiment
In order to there be understanding clearly to technical characteristics of the present invention, object and effect, now contrast accompanying drawing and the specific embodiment of the present invention is described.
As shown in Figure 1, Figure 2, Figure 3 shows, the invention provides a kind of water pump, such as, be called electronic water pump, comprise motor casing 1, staor winding 2, separation sleeve 3, vane rotor assembly 4 and pump cover 5.Motor casing 1, in tubular, connects drive plate assemblies 6 outside it; Staor winding 2 is set in the inner side of motor casing, and is electrically connected with drive plate assemblies 6, produces rotating magnetic field for generation of under the control of drive plate assemblies; Separation sleeve 3 is set in inside staor winding 2, is namely also positioned at motor casing 1, and separation sleeve 3 inside has annular chamber 31, and for installing rotor, the front end of separation sleeve 3 is opening end, and rear end is closed end, and the central shaft of separation sleeve 3 is to installation mandrel 7; Vane rotor assembly 4 is located in annular chamber 11, namely be positioned at separation sleeve 3, and can be set in rotationally outside mandrel 7, vane rotor assembly 4 comprises the impeller 41 of the opening end being positioned at separation sleeve 3 and connects impeller 41 and the rotor 42 relative with staor winding 2, and rotor 42 rotates for impeller 41 under the effect of rotating magnetic field; Pump cover 5 is sealedly connected on the opening end of separation sleeve 3, and and by docking the pump chamber 51 forming accommodating impeller 41 between the opening end of separation sleeve 3, pump cover 5 offers the water inlet 52 and water outlet 53 that are communicated with pump chamber 51 respectively, pump cover 5 and separation sleeve 3 are tightly connected, to prevent fluid seepage in pump chamber to outside motor.
Electronic water pump of the present invention, impeller and rotor compound is adopted to form vane rotor assembly, vane rotor assembly is rotated by the staor winding Direct driver of motor, separation sleeve can not only isolate vane rotor assembly and staor winding, also directly dock with pump cover and form complete water pump internal fluid channels, have pump seat function concurrently, thus the axial dimension of electronic water pump can be effectively reduced, make water pump structure simpler, compact, reduce water pump fabricating cost;
Simultaneously, because impeller and rotor assemble integrally, drive plate assemblies 6 directly controls or drives staor winding 2 to produce rotating magnetic field, rotor 42 impeller 41 under the direct effect of rotating magnetic field is rotated, outer magnetic ring assembly is driven to rotate with prior art by motor shaft, to be driven in water pump by magnetic by the magnet on outer magnetic ring assembly again and compare with the wheel rotation of magnet, decrease motor shaft, driving wheel and for magnetic couple outer magnetic ring assembly and be installed on magnet on impeller, owing to eliminating the crucial high cost component on conventional construction high-protection level motor required for impeller and motor magnetic driver, not only reduce product axial dimension, shorten volume, be convenient to assembling and lay, and product performance do not reduce, and significantly reduce cost of material, improve electric efficiency.
Wherein, motor casing comprises the housing 11 of annular and is connected to the heat radiation bonnet 12 of rearward end of housing 11, and staor winding 2 is set in inside housing 11, and with housing 11 interference fit, the exterior edge face of heat radiation bonnet 12 connects drive plate assemblies 6.
In addition, be also sealedly connected with flange plate 9 between the front end of separation sleeve 3 and pump cover 5, separation sleeve 3 is pressed on flange plate 9 by pump cover 5, and separation sleeve 3 and flange plate 9 are tightly connected, and fit with flange plate 9 end face, enter staor winding to prevent the liquid of outside motor.Wherein, housing and heat radiation bonnet, housing and flange plate, seal by silicone rubber O-ring between flange plate and separation sleeve, owing to adopting radial static seal mode, and design according to IP68 security level, security level is high, can not be there is heat-conducting medium seepage in Long-Time Service, can effectively prevent liquid from entering inside by outside motor.
As Figure 1 and Figure 4, in a specific embodiment, the overcoat 32 that separation sleeve 3 comprises tubular and the central shaft that is connected to overcoat 32 to the supporting portion 33 of column, overcoat 32 such as takes the shape of the letter U, form annular chamber 31 between overcoat 32 and supporting portion 33, the central shaft of supporting portion 33 is to wearing fixed central spindle 7, and mandrel 7 runs through supporting portion 33 vertically in other words, the sheathed rotor 42 in outside of supporting portion 33, staor winding 2 and vane rotor assembly 4 are isolated by overcoat 32.
In the present embodiment, vane rotor assembly 4 also comprises the connecting sleeve 43 of annular and the setting sleeve 44 of annular, and connecting sleeve 43 is connected with impeller 41, and one-body molded with impeller 41; Setting sleeve 44 is socketed in inside connecting sleeve 43, and being set in outside supporting portion 33, rotor 42 is coated and fixed between the outer side wall and the madial wall of connecting sleeve 43 of setting sleeve 44, preferably, the length of connecting sleeve 43 is greater than the length of rotor, and the length of separation sleeve 3 is greater than the length of connecting sleeve 43.By the said structure of connecting sleeve, separation sleeve, can directly by impeller and rotor compound, reduce motor shaft, driving wheel and the magnetic ring component for magnetic couple that existing water pump adopts, quality of fit is ensured, the connection of vane rotor assembly and connecting sleeve, separation sleeve reduces intermediate connector, final assembly operation is few, the minimizing of number of spare parts, also reduces the cost of motor.
Wherein, rotor 42 comprises rotor iron core 421 and is evenly attached to the magnetic sheet 422 on rotor iron core 421 periphery wall, adopts epoxy glue bonding firmly between rotor iron core 421 with magnetic sheet 422.
As Fig. 4, Fig. 7, shown in Figure 10, in addition, the fixing bearing inner race 81 be made up of stupalith outside supporting portion 33, the structure of bearing inner race 81 refers to Figure 11, Figure 12, fix inside setting sleeve 44 and be made up and the bearing outer ring 82 coordinated with bearing inner race 81 of stupalith, the structure of bearing outer ring refers to Figure 13, Figure 14, bearing outer ring 82 and bearing inner race 81 form ceramic bearing 8, ceramic bearing 8 is arranged in the inner chamber of vane rotor assembly 4, rotate for support rotor, bear radial force, ceramic bearing 8 by the pumped medium entered from ostium 411 or working medium as oiling agent.
As shown in FIG. 10 to 14, the sliding bearing that ceramic bearing 8 coordinates with bearing outer ring 82 for only having bearing inner race 81, ceramic bearing 8 is made owing to all adopting stupalith, there is advantage that is high temperature resistant, that corrode and wear and tear, the structure that ceramic bearing 8 matches owing to being designed to Internal and external cycle, the drawback that thorough solution prior art adopts rolling bearing not soak in media as well, overcome the existing bearing that can soak in media as well and can not meet again the drawback that the long life requires (only 10,000 hours), the working life of the ceramic bearing in the present invention was much larger than 40,000 hours.
The Performance comparision of electronic water pump of the present invention and traditional water pump is in table 1:
The Performance comparision of table 1 electronic water pump of the present invention and traditional water pump
Simultaneously, the slip ceramic bearing that the present invention adopts, can be immersed in cooling medium and not be corroded, again can be wear-resistant in high temperature media, motor can be made to work in very large speed range, and be unlikely to the life-span of damaging bearing, when motor High Rotation Speed, the pump capacity of driven by motor and lift can be made to improve a lot, there is the superior function that flow is large, lift is large, thus reach the different performance requirement of client.
Preferably, ceramic bearing 8 is two, and is respectively the first ceramic bearing being positioned at front end, supporting portion 33 (one end near impeller) and the second ceramic bearing being positioned at rear end, supporting portion 33 (one end away from impeller).
As shown in Fig. 7, Fig. 8, Fig. 9, specifically, between the madial wall of connecting sleeve 43 and the outer side wall of setting sleeve 44, there is mounting groove, rotor 42 is wrapped by and is fixed in mounting groove, the two ends of the bearing outer ring of the first ceramic bearing are resisted against between one end end face of setting sleeve 44 and the end face of impeller 41, and being arranged with bearing fixing sleeve 45 between the bearing outer ring of the first ceramic bearing and connecting sleeve 43, bearing outer ring adopts epoxy glue to be adhesively fixed on the madial wall of bearing fixing sleeve 45; The bearing outer ring of the second ceramic bearing is fixed on the other end of setting sleeve 44, and adopts epoxy glue to be adhesively fixed on the madial wall of setting sleeve 44;
When making vane rotor assembly 4, setting sleeve 44, bearing fixing sleeve 45, rotor iron core 421, magnetic sheet 422 and bearing outer ring 82 are assembled into an entirety, then be placed in injection mould and inject integrated impeller 41 and connecting sleeve 43, because electronic water pump of the present invention decreases the motor shaft of existing water pump, driving wheel and the parts such as magnetic ring component for magnetic couple, improve quality of fit, final assembly operation is few, is convenient to make and install, and reduces fabricating cost.
As shown in Fig. 4, Fig. 5, Fig. 6, accordingly, supporting portion 33 is outer is also arranged with setting sleeve 34, the bearing inner race of the first ceramic bearing is resisted against between the boss on one end end face of setting sleeve 34 and the outer side wall of front end, supporting portion 33, and the bearing inner race of the second ceramic bearing is resisted against between the boss on the other end end face of setting sleeve 34 and the outer side wall of rear end, supporting portion 33;
When making separation sleeve 3, mandrel 7, bearing inner race 81 and setting sleeve 34 are placed in injection mould as embedded parts, mutual alignment injects integrated overcoat 32 and supporting portion 33 again after determining, the separation sleeve of molding and forming has the function of isolation working medium (i.e. fluid) and electrical apparatus element, and the working medium that the heat that motor itself produces also can be isolated in cover inner chamber is taken away.
Again as shown in Figure 1, preferably, the first thrust pad 35 is provided with between the end of the bearing outer ring of the second ceramic bearing and the closed end of separation sleeve 3, also can be described as large thrust pad, first thrust pad 35 is made up of PEEK-HPV material, the end face of the bearing outer ring of the second ceramic bearing coordinates with the first thrust pad 35, bears the axial force between vane rotor assembly and separation sleeve and rotating friction force.PEEK-HPV material is a kind of special engineered material of function admirable, high temperature resistant more than 260 DEG C, and mechanical property is excellent, self lubricity is good, and chemicals-resistant corrodes, and wear resistance is good, for electronic water pump of the present invention, water pump can be made in use to reach non-maintaining rank.
In a feasible technological scheme, mandrel 7 has the external part stretching out supporting portion 33, impeller 41 is set in outside external part, pump cover 5 is also set in outside external part, namely impeller 41 and pump cover 5 are set in outside external part side by side or successively, and pump cover 5 is resisted against the outer end of impeller 41, by impeller 41 axially locating.
Preferably, the front end of impeller 41 embeds the second thrust pad 46, also can be described as little thrust pad, second thrust pad 46 can not rotate relatively with between impeller 41, plain cushion 47 is provided with between pump cover 5 and the second thrust pad 46, pump cover 5 and plain cushion 47 end contact, the axial mobility of restriction impeller 41, the second thrust pad 46 and plain cushion 47 be used for bearing vane rotor assembly point to pump cover water intake direction axial force and and pump cover between rotating friction force.Second thrust pad 46 is made up of stupalith, and plain cushion 47 is made up of PEEK-HPV material, and water pump of the present invention can be made equally in use to reach non-maintaining rank.
As shown in Figure 3, in a preferred embodiment, pump cover 5 is in scroll casing shape, and pump chamber 51 is spiral case inner chamber, near the pressure in the region (can be described as zone of high pressure) of water outlet 53 in spiral case inner chamber, be greater than the pressure in the region (can be described as low pressure area) near water inlet 52.
Wherein, part in annular chamber 31 between separation sleeve 3 and vane rotor assembly 4 forms heat dissipation cavity 311, cavity in other words between separation sleeve 3 and vane rotor assembly 4 is heat dissipation cavity 311, heat dissipation cavity 311 and pump chamber 51 form fluid flow passageway, during pump working, fluid enters in pump chamber 51 by water inlet 52, the rotation of impeller 41, fluid is made to produce centrifugal motion, under the influence of centrifugal force, fluid moves along the runner formed between pump cover 5 and separation sleeve 3 in pump chamber 51, and pressure progressively raises, and is finally flowed out by water outlet 53; Owing to there is zone of high pressure and low pressure area in pump chamber, some fluid will at heat dissipation cavity internal circulation flow, and take away the heat of motor self and drive plate assemblies generation, this segment fluid flow is finally also flowed out by water outlet 53.
In addition, there is between staor winding 2 and separation sleeve 3 filling chamber, fill in chamber and be provided with heat conductive insulating sealant layer 20, be used for fully deriving the heat of motor internal.
Again as shown in Figure 1, in addition, have the holding cavity of accommodating drive plate assemblies 6 in heat radiation bonnet 12, the opening end of heat radiation bonnet 12 is provided with the rear end cover 10 of closed holding cavity, heat radiation bonnet and rear end cover also adopt radial static seal mode to seal, and design according to IP68 security level.For ensureing the good heat radiating of drive plate assemblies, also embedding heat conductive insulating sealer 500 in holding cavity.
Therefore, electronic water pump of the present invention has the dual functions that interior media fluid for radiating heat and back end cover for motor fin dispel the heat, low ambient temperature and high medium temperature can be used for, high ambient temperature and low medium temperature occasion can be used for again, simultaneously, embedding heat conductive insulating sealer in staor winding, more be conducive to distributing motor internal heat, serviceability temperature scope is wide, it is-40 DEG C to 140 DEG C in ambient temperature, medium temperature is all can normally use in the scope of-40 DEG C to 100 DEG C, is especially suitable for hybrid vehicle and pure electric automobile;
And, due to electronic water pump built-in electronic commutating structure (i.e. drive plate assemblies), by PWM Energy Saving Control, the stepless time adjustment of motor can be realized, thus control the changes in flow rate of water pump, meet usage requirement.
Specifically, drive plate assemblies 6 is arranged in the heat radiation bonnet 12 of motor, by screw fastening heat radiation bonnet 12 in end face on.The effect of drive plate assemblies 6 is a kind of electronics commutation devices, is made up of a pcb board, chip, six power switch transistors, power outlet and some other relevant electronic parts and components.Wherein power tube must adopt insulating heat-conductive silica gel piece to separate with the end face of heat radiation bonnet, and heat-conducting silica gel sheet had both played and the heat that power tube produces is delivered to the effect of dispelling the heat on bonnet, played insulating effect again;
Drive plate assemblies 6 is connected by three screw fastenings with heat radiation bonnet 12.Drive plate assemblies is not only connected with external power cord, also be connected with the staor winding (also can be described as stator coil assembly) of motor internal, staor winding has six groups of enameled cable elements, they form a phase between two by the element of opposite direction, form three-phase altogether, adopt star connection between phase and phase, thus the lead-in wires forming three external connections are connected with the power transistor in drive plate assemblies.During work, first drive plate assemblies receives the current signal from staor winding, and this signal presses certain logical requirements conducting and closedown through the logic control trigger power transistor of amplification and chip program, thus ABAP Adapter is introduced staor winding.
When mounted, the triple line of staor winding causes the holding cavity of heat radiation bonnet 12 inside by the wire outlet hole of the bonnet 12 that dispels the heat, and passes the wire outlet hole of drive plate assemblies 6, is then welded in drive plate assemblies 6.Drive plate assemblies 6 is fixed by screws on heat radiation bonnet 12, power line (or having speed governing line, diagnostics lines) is through the wire outlet hole of heat radiation bonnet 12, then through the wire outlet hole of outlet cushion rubber, wherein outlet cushion rubber be two ends thick in the middle of thin parts, fill in heat radiation bonnet 12 wire outlet hole and above being stuck in.Rear end cover 10 is equipped with seal ring, is fixed by screws on heat radiation bonnet 12, can effectively prevent liquid from entering heat radiation bonnet 12 inner.
In use, after power line is connected, drive plate assemblies 6 is started working, by controlling the energising sequential of three-phase stator winding, control staor winding and produce rotating magnetic field, rotating magnetic field acts on the magnetic sheet (or being called magnet steel) on vane rotor assembly, magnetic sheet impeller rotor assembly is rotated, the rotation of impeller, makes fluid produce centrifugal motion, under the influence of centrifugal force, the runner that fluid is formed along pump cover and separation sleeve moves, pressure progressively raises, and is finally flowed out by water outlet, and the flow direction of fluid refers to the arrow in Fig. 3.Due to the existence of height nip in pump chamber, the heat dissipation cavity be always shaped as at separation sleeve and vane rotor circulates by fluid, takes away the heat of motor self and the heat of drive plate assemblies generation; Adding of heat conductive insulating sealant layer, make complete machine temperature more even, heat-conducting effect is better; Be delivered to the heat of motor casing, dispelled the heat by the radiating fin on motor casing.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.And it should be noted that, each constituent element of the present invention is not limited in above-mentioned overall applicability, the each technical characteristics described in specification of the present invention can select one to adopt separately or select the multinomial use that combines according to actual needs, therefore, the present invention covers other relevant with this case inventive point in the nature of things and combines and embody rule.
Claims (10)
1. an electronic water pump, is characterized in that, described electronic water pump comprises:
Motor casing, in tubular, is connected with drive plate assemblies outside it;
Staor winding, is set in inside described motor casing, and is electrically connected with described drive plate assemblies, and can produce rotating magnetic field under the control of described drive plate assemblies;
Separation sleeve, is set in inside described staor winding, and its inside has annular chamber, and the front end of described separation sleeve is opening end, and rear end is closed end, and the central shaft of described separation sleeve is to installation mandrel;
Vane rotor assembly, be located in described annular chamber, and can be set in rotationally outside described mandrel, described vane rotor assembly comprises impeller and connects described impeller and the rotor relative with described staor winding, and described rotor drives described wheel rotation under the effect of described rotating magnetic field;
Pump cover, is sealedly connected on the opening end of described separation sleeve, and docks with described separation sleeve the pump chamber forming accommodating described impeller, described pump cover offers the water inlet and water outlet that are communicated with described pump chamber respectively.
2. electronic water pump as claimed in claim 1, it is characterized in that, the overcoat that described separation sleeve comprises tubular and the central shaft that is connected to described overcoat to the supporting portion of column, described annular chamber is formed between described overcoat and described supporting portion, the central shaft of described supporting portion is to wearing described mandrel, the sheathed described rotor in outside of described supporting portion, described staor winding and described vane rotor assembly are isolated by described overcoat.
3. electronic water pump as claimed in claim 2, it is characterized in that, described vane rotor assembly also comprises:
Connecting sleeve, is connected with described impeller, and one-body molded with described impeller;
Setting sleeve, is socketed in inside described connecting sleeve, and is set in outside described supporting portion, and described rotor is coated between the outer side wall of described setting sleeve and the madial wall of described connecting sleeve.
4. electronic water pump as claimed in claim 3, it is characterized in that, the fixing bearing inner race be made up of stupalith outside described supporting portion, fix inside described setting sleeve and be made up and the bearing outer ring coordinated with described bearing inner race of stupalith, described bearing outer ring and described bearing inner race form ceramic bearing.
5. electronic water pump as claimed in claim 4, it is characterized in that, described ceramic bearing is two, and is respectively the first ceramic bearing being positioned at front end, described supporting portion and the second ceramic bearing being positioned at rear end, described supporting portion.
6. electronic water pump as claimed in claim 2, it is characterized in that, described mandrel has the external part stretching out described supporting portion, and described impeller and described pump cover are set in outside described external part successively, described pump cover against described impeller, by described impeller axially locating.
7. the electronic water pump as described in any one of claim 1 to 6, is characterized in that, the cavity between described separation sleeve and described vane rotor assembly is heat dissipation cavity, and described heat dissipation cavity and described pump chamber form fluid flow passageway.
8. the electronic water pump as described in any one of claim 1 to 6, is characterized in that, described pump cover is scroll casing shape, and described pump chamber is spiral case inner chamber, near the pressure in the region of described water outlet in described spiral case inner chamber, is greater than the pressure in the region near described water inlet.
9. the electronic water pump as described in any one of claim 1 to 6, is characterized in that, has filling chamber between described staor winding and described separation sleeve, is provided with heat conductive insulating sealant layer in described filling chamber.
10. the electronic water pump as described in any one of claim 1 to 6, is characterized in that, is sealedly connected with flange plate between the front end of described motor casing and described pump cover, and described flange plate and described separation sleeve are tightly connected.
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| CN201610050672.2A CN105443400B (en) | 2016-01-26 | 2016-01-26 | Electronic water pump |
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| CN201610050672.2A CN105443400B (en) | 2016-01-26 | 2016-01-26 | Electronic water pump |
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| CN105443400B CN105443400B (en) | 2018-02-16 |
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| CN108167200A (en) * | 2018-03-20 | 2018-06-15 | 郑旭 | Electronic water pump with active cooling channel |
| CN108757578A (en) * | 2018-04-24 | 2018-11-06 | 珠海万伏科技有限公司 | Heat radiating type electronic water pump |
| CN110768441A (en) * | 2018-07-25 | 2020-02-07 | 广东威灵汽车部件有限公司 | Motor, water pump and vehicle |
| CN108980063A (en) * | 2018-07-30 | 2018-12-11 | 安徽达来电机有限公司 | A kind of electronic water pump |
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| CN110080990A (en) * | 2019-04-11 | 2019-08-02 | 浙江科力车辆控制系统有限公司 | A kind of electronic water pump |
| CN110159548A (en) * | 2019-06-13 | 2019-08-23 | 广东骏驰科技股份有限公司 | A kind of electric centrifugal pump |
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| CN112943631A (en) * | 2021-03-31 | 2021-06-11 | 深圳南方德尔汽车电子有限公司 | Electronic water pump for engine heat dissipation |
| CN113653556A (en) * | 2021-10-21 | 2021-11-16 | 威晟汽车科技(宁波)有限公司 | Electronic water pump device of automobile |
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Denomination of invention: Electronic water pump Granted publication date: 20180216 Pledgee: Bank of China Limited by Share Ltd. Cangzhou branch Pledgor: HEBEI SHENHAI ELECTRICAL APPLIANCES CO.,LTD. Registration number: Y2024980020223 |