Utility model content
In view of the above drawbacks of the prior art or insufficient, the utility model provides a kind of electronic water pump, structure novel,
The cooling efficiency to plane electric-controlled plate can be effectively improved, to greatly improve the job stability and reliability of electronic water pump.
To achieve the above object, the utility model provides a kind of electronic water pump, the electric machine assembly including being equipped with rear end cap
With plane electric-controlled plate, the rear end cap includes back shroud, and the plane electric-controlled plate is installed on the aft bulkhead of the back shroud, institute
State the hollow sink being formed in back shroud conducive to plane electric-controlled plate heat dissipation.
Preferably, the hollow sink is parallel to the plane electric-controlled plate setting.
Preferably, the hollow sink includes as the sink front bulkhead of the front bulkhead of the back shroud and as after described
The sink aft bulkhead of the aft bulkhead of cover board, the wall thickness of the sink front bulkhead are greater than the wall thickness of the sink aft bulkhead.
Preferably, the axis projection profile of the plane electric-controlled plate is located in the axis projection profile of the hollow sink.
Preferably, the cast member that the rear end cap is integrally formed.
Preferably, the rear end cap is aluminium alloy rear end cap or cast iron rear end cap.
Selectively, the electric machine assembly includes drive end bearing bracket, the water proof set between the drive end bearing bracket and rear end cap, sets
The motor stator for being placed in the drive end bearing bracket and being set in outside the water proof set, the peripheral wall of the drive end bearing bracket are equipped with around the electricity
The drive end bearing bracket sink of machine stator, the drive end bearing bracket is connect with rear end cap and the drive end bearing bracket sink is connected to hollow sink.
Preferably, the drive end bearing bracket is for double-layer shell structure and including drive end bearing bracket inner casing and front end cover housing, the front end
Interlayer cavity between lid inner casing and front end cover housing is formed as the drive end bearing bracket sink.
Preferably, connected support structure is provided between the drive end bearing bracket inner casing and the front end cover housing.
Preferably, the cast member that the drive end bearing bracket is integrally formed.
Preferably, the drive end bearing bracket and the water proof set between, the rear end cap and the water proof set between, the front end
The junction of lid and the rear end cap is equipped with sealing ring.
Selectively, the electric machine assembly include drive end bearing bracket, the water proof set between the drive end bearing bracket and rear end cap with
And it is sheathed on the rotor in the water proof set, the drive end bearing bracket, the rear end cap, water proof set and the motor turn
Son limits coolant liquid Circulation Area jointly, is equipped in the rear end cap for being connected to the coolant liquid Circulation Area and the hollow water
The connectivity structure of slot.
Preferably, the rear end cap further includes the bearing mounting groove being set on the front bulkhead of the back shroud and circular institute
The circumferential sink of bearing mounting groove setting is stated, the circumferential direction sink is connected to the coolant liquid Circulation Area as the connectivity structure
With the hollow sink.
Preferably, the drive end bearing bracket is equipped with the drive end bearing bracket through-hole for coolant liquid to be introduced to the coolant liquid Circulation Area,
The armature spindle of the rotor be formed with axially through central shaft hole and protrude into the bearing mounting groove, the bearing
Mounting groove is axially connected to the hollow sink.
Preferably, the groove sidewall of the bearing mounting groove is equipped with peripheral wall notch section, described in peripheral wall notch section connection
Circumferential sink and the central shaft hole.
Through the above technical solutions, the electronic water pump of the utility model formed in the back shroud of rear end cap hollow sink and
Plane electric-controlled plate is installed, which can be by injecting the coolant liquid circulated with quick on the aft bulkhead of back shroud
Heat caused by plane electric-controlled plate is taken away, that is, the rapid cooling for being conducive to plane electric-controlled plate is cooling, to greatly improve electronics
The job stability and reliability of water pump.
Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is to be used to provide a further understanding of the present invention, and constitute part of specification, and following
Specific embodiment be used to explain the utility model together, but do not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the electronic water pump in specific embodiment of the present utility model;
Fig. 2 is the cross-sectional view A-A of the electronic water pump in Fig. 1;
Fig. 3 is the cross-sectional view that the electronic water pump of the drive end bearing bracket equipped with drive end bearing bracket sink is used in Fig. 1;
Fig. 4 is the perspective view of the rear end cap of the electronic water pump in Fig. 1;
Fig. 5 is the front view of the rear end cap in Fig. 4;
Fig. 6 is the cross-sectional view B-B of the rear end cap in Fig. 5;
Fig. 7 is the cross-sectional view C-C of the rear end cap in Fig. 5;
Fig. 8 is the cross-sectional view D-D of the electronic water pump in Fig. 1;
Fig. 9 is the cross-sectional view E-E of the rear end cap in Fig. 5.
Description of symbols:
1 drive end bearing bracket, 2 rear end cap
3 water proofs cover 4 motor stators
5 rotor, 6 sealing ring
7 plane electric-controlled plate, 8 impeller
9 screw thread nut cap, 10 bearing
11 drive end bearing bracket inner casing, 12 front end cover housing
13 drive end bearing bracket sink, 14 drive end bearing bracket through-hole
21 back shroud, 22 bearing mounting groove
The circumferential sink of 23 peripheral wall notch section 24
25 hollow 26 sink front bulkheads of sink
27 sink aft bulkhead, 28 back flush water inlet
51 armature spindle, 52 central shaft hole
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually
Be for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component mutual alignment
Relationship description word.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The utility model provides a kind of electronic water pump, and as shown in Figures 1 to 9, which includes being equipped with rear end cap 2
Electric machine assembly and plane electric-controlled plate 7.Wherein, rear end cap 2 includes back shroud 21, and plane electric-controlled plate 7 is installed on back shroud 21
On aft bulkhead, hollow sink 25 is formed in back shroud 21.The hollow sink 25 can be by injecting the coolant liquid circulated
Quickly to take away the heat that plane electric-controlled plate 7 generates during the work time, i.e., hollow sink 25 is conducive to dissipating for plane electric-controlled plate 7
Heat.
As it can be seen that coolant liquid need not be directly during circulating since hollow sink 25 is formed in back shroud 21
Contact plane electric-controlled plate 7 can take away the heat of its generation, the risk that short circuit occurs in plane electric-controlled plate 7 be avoided, to guarantee
Plane electric-controlled plate 7 can work normally in radiation processes.Further, since hollow sink 25 is specifically in plane electric-controlled plate
7 cooling structure, it is higher to the cooling efficiency of plane electric-controlled plate 7, plane electric-controlled plate 7 can be made to be constantly in suitable temperature
Lower work, to greatly improve the job stability and reliability of electronic water pump.
Preferably, hollow sink 25 can be set as being parallel to each other with plane electric-controlled plate 7, is increased in hollow sink 25 with this
Coolant liquid and plane electric-controlled plate 7 heat transfer area, to further increase the radiating rate to plane electric-controlled plate 7.
In addition, the axis projection profile of plane electric-controlled plate 7 may make to be located in the axis projection profile of hollow sink 25, from
And further increase the heat transfer area of the coolant liquid and plane electric-controlled plate 7 in hollow sink 25.
Specifically, hollow sink 25 may include sink front bulkhead 26 and sink aft bulkhead 27.At this point, sink front bulkhead 26 is made
For the aft bulkhead as back shroud 21 of front bulkhead and sink aft bulkhead 27 of back shroud 21.It under such configuration, is the hollow water of increase
The heat transfer rate of coolant liquid and plane electric-controlled plate 7 in slot 25, can set weak wall construction for sink aft bulkhead 27, but at this time
Need to guarantee that rear end cap 2 has enough bonding strengths to improve Assembly stability, therefore can be by the wall thickness of sink front bulkhead 26
It is preferably arranged to the wall thickness greater than sink aft bulkhead 27.
Since hollow sink 25 is that can be formed in back shroud 21 specifically in the cooling structure of plane electric-controlled plate 7
For irregular structure.Hereby, rear end cap 2 is preferably integrally formed using casting technique, and can use aluminium alloy or cast iron
Equal materials are cast.In casting, the desired structure that the fillers such as sand core fill out hollow sink 25 can be first passed through, to rear end
Filler is crushed and is taken out after forming by lid 2, to form above-mentioned hollow sink 25 in the back shroud of rear end cap 2.
It should be noted that realize circulating for the coolant liquid in hollow sink 25, need to connect hollow sink 25
It is logical one or more for driving the power sources of coolant flow, the power source is either internal motivation in electronic water pump
Source, the external power supply being also possible to outside electronic water pump.In the present invention, preferably by the internal motivation in electronic water pump
Source circulates power provide the coolant liquid in hollow sink 25.It is highly preferred that the internal power source can be electronic water
Impeller 8 in pump.
In other words, the electronic water pump of the utility model can be realized self cooling while participating in the cooling to external system
But.This is from the cooling that cooling procedure may include to the cooling procedure of plane electric-controlled plate 7 and to motor stator and/or rotor
Process hereinafter can specifically illustrate different cooling procedures by different embodiments.
In one embodiment, as shown in figure 3, the electric machine assembly in electronic water pump further includes drive end bearing bracket 1, is located at front end
The motor stator 4 that water proof between lid 1 and rear end cap 2 covers 3 and is set in drive end bearing bracket 1 and is set in outside water proof set 3.Its
In, the peripheral wall of drive end bearing bracket 1 is equipped with the drive end bearing bracket sink 13 of wound motor stator 4, and drive end bearing bracket 1 is connect with rear end cap 2.At this point, preceding
One end of end cap sink 13 can be connected to the drive end bearing bracket through-hole 14 being set on drive end bearing bracket 1, and the other end can be connected to hollow sink 25.When
When impeller 8 rotates, coolant liquid can generate mobilization dynamic to pass sequentially through drive end bearing bracket through-hole 14, drive end bearing bracket sink 13 and hollow
Sink 25, to be cooled down to motor stator 4 and plane electric-controlled plate 7.
In addition, rear end cap 2 includes being set on the front bulkhead of back shroud 21 with the bearing mounting groove 2 for installing bearing 10
And it is set in the rotor 5 in water proof set 3.Armature spindle 51 in the rotor 5 be formed with axially through center
Axis hole 52, one end of the armature spindle 51 wear even impeller 8, the other end and wear connecting shaft and hold 10 and protrude into bearing mounting groove 2, bearing installation
Slot 2 is preferably arranged to be connected to hollow sink 25.At this point, the coolant liquid in above-mentioned hollow sink 25 can continue to flow to bearing
It in mounting groove 2, and is flowed out by the central shaft hole 52 of armature spindle 51, thus by caused by motor stator 4 and plane electric-controlled plate 7
Heat is taken out of outside electronic water pump.
It can be seen that in the present embodiment, coolant liquid can followed by drive end bearing bracket through-hole 14, drive end bearing bracket sink 13,
The central shaft hole 52 of hollow sink 25, bearing mounting groove 2 and armature spindle 51 is protected to form complete cooling cycle water route
The lasting heat dissipation to motor stator 4 and plane electric-controlled plate 7 has been demonstrate,proved, the job stability and reliability of electronic water pump are improved.
Preferably, double-layer shell structure can be set by drive end bearing bracket 1.At this point, the drive end bearing bracket 1 includes 11 He of drive end bearing bracket inner casing
Front end cover housing 12, the interlayer cavity between the drive end bearing bracket inner casing 11 and front end cover housing 12 are formed as above-mentioned drive end bearing bracket sink
13.And further, it can be connected by connected support structure between drive end bearing bracket inner casing 11 and front end cover housing 12, to guarantee double
The intensity of layer shell structure.
It should be noted that since drive end bearing bracket sink 13 is specifically in the cooling structure of motor stator 4, in front end
Irregular structure is formed as in lid 1, therefore drive end bearing bracket 1 and the manufacturing method of rear end cap 2 are relatively similar.In other words, have upper
The drive end bearing bracket 1 for the double-layer shell structure stated preferably is integrally formed using casting technique, and can be using aluminium alloy or cast iron etc.
Material is cast.In casting, the desired structure that the fillers such as sand core fill out drive end bearing bracket sink 13 can be first passed through, to front end
Filler is crushed and is taken out after forming by lid 1, to form above-mentioned drive end bearing bracket sink 13 in drive end bearing bracket 1.
In another embodiment, as shown in Fig. 2, electric machine assembly may include drive end bearing bracket 1, be located at drive end bearing bracket 1 and rear end
The rotor 5 that water proof between lid 2 covers 3 and is sheathed in water proof set 3.Wherein, drive end bearing bracket 1, rear end cap 2, water proof set 3 with
And rotor 5 limits coolant liquid Circulation Area jointly, is equipped in rear end cap 2 for being connected to coolant liquid Circulation Area and hollow at this time
The connectivity structure of sink 25.
Preferably, rear end cap 2 includes being set on the front bulkhead of back shroud 21 with the bearing installation for installing bearing 10
Slot 22 and the circumferential sink 24 being arranged around the bearing mounting groove 22.At this point, circumferential sink 24 can be as above-mentioned connection
Structure is to be connected to coolant liquid Circulation Area and hollow sink 25.It should be noted that connectivity structure can have other structures form, no
It is only limitted to above-mentioned circumferential sink 24.
In addition, can be equipped with drive end bearing bracket through-hole 14 on drive end bearing bracket 1, the armature spindle 51 of rotor 5 can be formed with to be passed through along axial direction
The central shaft hole 52 worn, one end of the armature spindle 51 wears even impeller 8 and the other end wears connecting shaft and holds 10 and protrude into bearing mounting groove 22
In, bearing mounting groove 22 can axially be connected to hollow sink 25.
In the rotary course of impeller 8, coolant liquid can generate mobilization dynamic to pass sequentially through drive end bearing bracket through-hole 14, cooling
Liquid Circulation Area, circumferential sink 24 and hollow sink 25, and flowed out outside electronic water pump from the central shaft hole 52 in armature spindle 51, thus
Circulating cooling is carried out to rotor 5 and plane electric-controlled plate 7.
For the circulation flow rate for accelerating coolant liquid, peripheral wall notch section can be set in the groove sidewall of bearing mounting groove 22
23, which can directly be connected to circumferential sink 24 and central shaft hole 52.In other words, before coolant liquid passes sequentially through
After end cap through-hole 14, coolant liquid Circulation Area and circumferential sink 24, part coolant liquid can pass sequentially through hollow sink 25 and rotor
Central shaft hole 52 in axis 51 and flow out outside electronic water pump, another part coolant liquid then can directly be entered by peripheral wall notch section 23
Central shaft hole 52 is to flow out.
In another embodiment, in conjunction with Fig. 2 and Fig. 3, when impeller 8 is rotated to drive coolant liquid to enter drive end bearing bracket through-hole
After 14, part coolant liquid can pass sequentially through coolant liquid Circulation Area, circumferential sink 24 and hollow sink 25, and from armature spindle 51
Central shaft hole 52 flow out electronic water pump outside.Another part coolant liquid can pass sequentially through drive end bearing bracket sink 13, hollow sink 25,
Bearing mounting groove 2, and flowed out outside electronic water pump from the central shaft hole of armature spindle 51 52.
As it can be seen that in the present embodiment, electronic water pump from cooling procedure include to motor stator 4,5 and of rotor
The cooling of plane electric-controlled plate 7, to improve the job stability and reliability of electric machine assembly and plane electric-controlled plate 7.
In another embodiment, as shown in Figure 8 and Figure 9, electronic water pump further include be set to it is reversed on rear end cap 2
Water inlet 28 is rinsed, and above-mentioned coolant liquid Circulation Area can be used as the use of cleaning solution Circulation Area.At this point, back flush water inlet
28 for introducing the cleaning solution Circulation Area for cleaning solution to realize the cleaning to rotor 5.
As it can be seen that under the normal operating conditions of electronic water pump in the present embodiment, coolant liquid Circulation Area can be used in pair
Electronics rotor 5 carries out cooling heat, and under the cleaning state of the electronic water pump, coolant liquid Circulation Area potentially acts as wash liquid stream
Logical area uses, and exterior washings liquid is introduced to the wash liquid stream by the back flush water inlet 28 by being set on rear end cap 2
In logical area, so that electronic water pump be made to have both from cooling and reverse cleaning function, its service life is effectively extended.
Specifically, back flush water inlet 28 can be arranged on back shroud 21, at this time the connectivity structure energy on rear end cap 2
It is enough connected to cleaning solution Circulation Area and back flush water inlet 28, guarantees that exterior washings liquid can smoothly enter into cleaning solution Circulation Area
To realize the cleaning to rotor 5.
Further, the hollow sink 25 on back shroud 21 is open equipped with groove sidewall, and groove sidewall opening can be used as above-mentioned
Back flush water inlet 28.Even if structure is also relatively simple as it can be seen that adding back flush water inlet 28 on back shroud 21
It is single, it can be equally made up of casting technique, not will increase excessive production cost.
Further, since electronic water pump is not necessarily to external cleaning solution during from cooling, therefore reversed during from cooling
Closed state should be able to be switched to by rinsing water inlet 28, and when electronic water pump is cleaned, back flush can be intake
Mouth 28 reopens.To enable back flush water inlet 28 to be switched fast under open or closed state, can reversely rush
It washes on water inlet 28 and dismountable screw thread nut cap 9 is set.When electronic water pump is in normal operating conditions, screw thread nut cap 9 is screwed
It, can be elastic to open reversed punching by screw thread nut cap 9 when electronic water pump is in cleaning state to be closed back flush water inlet 28
Wash water inlet 28.
For the electronic water pump in the utility model, no matter it is in normal operating conditions or cleaning state, is required to protect
Demonstrate,prove the leakproofness of its privileged site.Specifically, can drive end bearing bracket 1 and water proof set 3 between, rear end cap 2 and water proof set 3 between and
Sealing ring 6 is arranged in the junction of drive end bearing bracket 1 and rear end cap 2.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
Detail in above embodiment can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the protection scope of the utility model.
It is further to note that specific technical features described in the above specific embodiments, in not lance
It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is to each
No further explanation will be given for the possible combination of kind.
In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed
The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.