CN111677695A - Self-radiating electronic cooling water pump - Google Patents

Abstract

A self-radiating electronic cooling water pump comprises a volute component, a rotor impeller component, a stator component, a control circuit board and an end cover, wherein the stator component comprises a shell and a stator component, the interior of the shell is divided into two parts by a partition plate, one part of the shell is provided with the stator component, the interior of the shell corresponding to the stator component is provided with a rotor containing cavity, the rotor impeller component comprises a rotor component and an impeller component, the impeller component is fixed on the rotor component, the rotor component is arranged in the rotor containing cavity, the volute component is sealed at the other end of the shell to form a space, the impeller component is arranged in the space, the other part of the volute component is sealed by the end cover to form another space, the control circuit board is arranged in the other space, a waterproof cup is arranged in the rotor containing cavity, the outer wall of a cup body of the waterproof, the other end of the rotor shaft is connected in a hole of the volute. Its advantages are simple structure and high cooling effect.

Description

Self-radiating electronic cooling water pump

Technical Field

The invention relates to an electronic cooling water pump.

Background

The existing electronic cooling water pump generally comprises a shell, a volute component, a motor comprising a stator and a rotor, an impeller, a control circuit board and an end cover, wherein the interior of the shell is divided into two parts, two ends of the shell are respectively sealed with the volute component and the end cover, the control circuit board is arranged in a space sealed by the end cover, the motor and the impeller are arranged in the space sealed by the volute component, the control circuit board is internally provided with a control circuit, and the rotating speed of the motor is adjusted according to the temperature required to be controlled through the control circuit in the control circuit board, so that the flow of the water pump is controlled, and the aim of accurately controlling.

The part that adopts thermoplastic to make between the stator of current electron cooling water pump motor and the rotor more separates the coolant liquid, its structure is unreasonable, also because the reason that receives plastic strength, part thickness need be more than 1.5mm, can produce very big magnetic resistance, make the efficiency of whole water pump lower, the plastics heat conductivity is poor, also do not benefit to the heat that produces stator winding and transmit the heat dissipation through the coolant liquid, make the water pump temperature rise too high lead to work unstability, the volume and the weight that also can make whole water pump simultaneously are great.

Disclosure of Invention

The invention aims to solve the technical problem of providing a self-radiating electronic cooling water pump aiming at the prior art, so that the electronic cooling water pump can better radiate heat.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a from radiating electron cooling water pump, its includes volute component, rotor impeller part, stator module, control circuit board, end cover, stator module includes casing, stator component, the casing is inside to be divided into two parts by the baffle, sets up stator component on one of them part, and the inside rotor appearance chamber that sets up of casing that stator component corresponds, rotor impeller part include rotor part and impeller part, impeller part fixes on the rotor part, the rotor part arrange in the rotor appearance chamber, volute component seals at the casing other end and forms a space, impeller part arranges this space in, another part forms another space by end cover seal, control circuit board arranges in another space, its characterized in that: the water-proof cup is arranged in the rotor cavity, the outer wall of the cup body of the water-proof cup is tightly attached to the stator, one end of a rotor shaft of the rotor component is fixed to the bottom of the water-proof cup, and the other end of the rotor shaft is connected to a hole of the volute.

Preferably, the bottom of the waterproof cup is provided with an anti-rotation flat part, one end of a rotor shaft of the rotor part is fixed in the anti-rotation flat part of the rotor shaft through interference fit, the other end of the rotor shaft is connected in a hole of the volute, the rotor shaft is prevented from rotating through the anti-rotation flat part, the phenomenon that the rotor shaft and a shaft fixing chamber generate rotation friction to generate clearance and influence coaxiality and radial run-out precision is avoided, and the rotor impeller part interferes with the waterproof cup when rotating.

Preferably, the cup mouth of the waterproof cup is provided with an axial positioning surface, and the axial positioning surface is embedded in the concave ring groove of the end surface of the stator assembly for positioning, so that the positioning can be better realized.

Preferably, a radial sealing surface is arranged on the cup mouth of the waterproof cup and is placed in the concave ring groove and sealed with the sealing surface of the volute, so that cooling liquid in the volute is prevented from leaking outwards or flowing into the interior of the stator component to corrode and rust the silicon steel sheet of the stator or cause the winding and the control circuit board to generate short circuit to cause failure.

Preferably, the cup mouth of the waterproof cup is respectively provided with a radial vibration reduction surface, an axial positioning surface and a radial sealing surface from inside to outside.

Preferably, the partition plate is provided with a through hole in the middle thereof so as to communicate with the rotor cavity, so that heat and air generated in the rotor cavity can be circulated to another space through the through hole, so that the heat can be finally exhausted through a respiratory membrane component described later.

Preferably, the water resistant cup member is a stainless steel material, which provides better heat dissipation and is easier to make thinner.

Compared with the prior art, the invention has the advantages that: through setting up waterproof cup part and the cup outer wall of waterproof cup hugs closely the stator, like this, the waterproof cup of heat accessible that produces on the stator transmits the coolant liquid for electron cooling water pump circulation, and the heat that the magnetic ring in the rotor produced also transmits the coolant liquid, takes away the heat through circulating cooling liquid, realizes automatic heat dissipation to reduce the temperature rise of motor, improve the efficiency and the reliability of motor, its simple structure, it is effectual to cool down.

Drawings

Fig. 1 is a schematic perspective view of an electronic cooling water pump according to an embodiment of the present invention.

FIG. 2 is an exploded view of an electric cooling water pump according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an electronic cooling water pump according to an embodiment of the present invention.

FIG. 4 is a schematic structural view of an electric cooling water pump according to an embodiment of the present invention, with a rotor impeller member and a waterproof cup member removed.

FIG. 5 is a perspective view of a volute component of an electric cooling water pump according to an embodiment of the present invention.

FIG. 6 is a bottom view of the volute component of the electric cooling water pump in accordance with the embodiment of the present invention.

Fig. 7 is a sectional view F-F of fig. 6.

FIG. 8 is a top view of an embodiment of the sound absorbing and vibration damping pad of the present invention.

Fig. 9 is a sectional view a-a of fig. 8.

FIG. 10 is a bottom view of the sound absorbing and vibration damping pad according to the embodiment of the present invention.

FIG. 11 is a schematic view of a rotor wheel assembly according to an embodiment of the present invention.

FIG. 12 is a top view of a rotor wheel assembly according to an embodiment of the present invention.

Figure 13 is a schematic structural view of a waterproof cup component according to an embodiment of the present invention.

Fig. 14 is a sectional view taken along line G-G of fig. 13.

FIG. 15 is a schematic diagram of a circuit control board for an embodiment of the present invention.

Fig. 16 is a perspective view of an end cap according to an embodiment of the present invention.

FIG. 17 is a top view of an end cap according to an embodiment of the present invention.

Fig. 18 is a cross-sectional view C-C of fig. 17.

FIG. 19 is a schematic exploded view of a respiratory membrane component according to an embodiment of the invention.

FIG. 20 is a schematic structural diagram of a respiratory membrane component according to an embodiment of the invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1-20, the electric cooling water pump includes a volute component 20, a stator component 70, a rotor-impeller component 40, a control circuit board 80, and an end cover 100.

The elastic mounting bracket 130 for mounting the electronic cooling water pump is further arranged, the elastic mounting bracket 130 comprises a sleeve part 1301 in the middle and lug parts 1302 on two sides of the sleeve part, a through hole 13021 is formed in each lug part, the elastic mounting bracket 130 expands an inner hole through the elasticity of the sleeve part 1301 by a tool and is sleeved on the stator assembly 70, the bushing 140 is mounted on the through hole 13021 of the elastic mounting bracket 130, and a mounting hole 1401 is formed in the bushing 140. Thus, the stator assembly 70 of the electric cooling water pump is mounted to the work site via the resilient mounting bracket 130 and the bushing 140, which further reduces the vibration of the electric cooling water pump and thereby better reduces the noise thereof, see fig. 1 and 2.

As shown in fig. 3-4, the stator assembly 70 includes a housing and a stator component, the housing is divided into two spaces 708, 709 by a partition 703, wherein the stator component including a stator silicon steel sheet 701 and a winding 702 is first disposed in one space 708, the stator component is further provided with a matching rotor cavity 7081 inward, the end face of the housing is fixed with the volute component 20 by an anti-slip screw 120 to form a space for accommodating the rotor wheel component 40, the end face of the other space 709 is fixed with the end cover 100 by an anti-slip screw 10 to form a sealed chamber, a control circuit board 80 is installed in the sealed chamber, and the control circuit board 80 is fixed on the partition 703.

The partition 703 is provided with a through hole 7031 in the middle thereof so as to communicate with the rotor accommodating chamber 7081, so that heat and air generated in the rotor accommodating chamber 7081 can be circulated therethrough to the other space 709, and finally, the heat can be discharged through the breathing membrane part 110 described later.

A seal ring 90 is also installed between the end face of the stator assembly 70 and the end cap 100 to better seal the other space 709.

As shown in fig. 13-14, the water resistant cup assembly 60, which includes the water resistant cup 601 and the rotor shaft 602, is mounted within the rotor receptacle 7081 of the stator assembly 70 described above.

The waterproof cup 601 is made of stainless steel materials, the bottom of the cup is provided with an anti-rotation flat 6015 for fixing the rotor shaft, one end 6021 of the rotor shaft 602 is fixed in the anti-rotation flat 6015 of the bottom of the cup through interference fit, the other end of the rotor shaft 602 is connected in a hole 2016 of the volute 201, see fig. 4 and 7, and therefore the rotor shaft 602 can be prevented from rotating, the phenomenon that coaxiality and radial jumping precision are affected due to the fact that the rotor shaft 602 and the rotor shaft fixing chamber 6014 are subjected to rotating friction to generate a gap can be avoided, interference between the rotor shaft 602 and the waterproof cup 601 when the rotor impeller part 40 rotates can also be avoided, and the.

The mouth of the waterproof cup 601 is provided with a radial damping surface 6013, an axial positioning surface 6011 and a radial sealing surface 6012 from inside to outside.

The radial vibration reduction surface 6013 on the rim of the waterproof cup 601 is matched with the hemispherical vibration reduction part 302 of the sound absorption and vibration reduction pad 30, so that the vibration reduction effect is achieved.

The axial positioning surface 6011 on the rim of the waterproof cup 601 is embedded in the concave ring groove 705 on the other end surface of the stator assembly 70 for positioning.

The radial sealing surface 6012 on the cup rim of the waterproof cup 601 is placed in the concave ring groove 705 and forms combined sealing with the sealing ring 50 and the sealing surface 2016 of the volute 201, so that the cooling liquid in the volute 201 is prevented from leaking outwards or flowing into the stator assembly 70 to corrode and rust the stator silicon steel sheet 701 or cause the winding 702 and the control circuit board 80 to generate short circuit to cause failure.

The outer circle of the cup body of the waterproof cup 601 is tightly attached to the inner hole of the stator silicon steel sheet 701, heat generated by the winding 702 on the silicon steel sheet 701 can be transmitted to the cooling liquid of the internal circulation through the waterproof cup 601, heat generated by the magnetic ring 404 in the rotor is also transmitted to the cooling liquid, the heat is taken away through the circulating cooling liquid, automatic heat dissipation is achieved, accordingly, the temperature rise of the motor is reduced, and the efficiency and the reliability of the motor are improved.

The thickness of the waterproof cup 601 is 0.3mm or less, so that the total air gap of the motor is reduced, the air gap reluctance loss is reduced, the use of effective materials such as the magnetic ring 404 and the stator silicon steel sheet 701 is reduced, the power density of the motor is improved, the overall cost is reduced, the weight of the whole water pump is reduced, the design requirement of light weight is met, and the effects of energy conservation and emission reduction are achieved.

As shown in fig. 5-7, the volute component 20 includes a volute 201 and a friction pad 202.

The end face of the volute 201 is provided with an involute accelerating groove 2012 with a gradually-increasing sectional area, the involute accelerating groove 2012 serves as a water flow channel of the rotor impeller part 40 in the rotating process and plays a role in removing axial pressure from the rotor impeller part 40, a drop-shaped groove 2011 is arranged at the starting end of the involute accelerating groove 2012, so that the rotor impeller part 40 can run more stably, meanwhile, cavitation erosion is reduced, a flow blocking ring 2015 is arranged on the end face of the volute 201, vortex is reduced, the rotating resistance of cooling liquid in the involute accelerating groove 2012 to the rotor impeller part 40 is reduced, and the working efficiency of the water pump is improved.

A hole 2016 capable of positioning the rotating shaft 204 is formed in the center of the volute 201, and the hole 2016 is matched with the waterproof cup 601 to position the rotating shaft 204.

The friction gasket 202 is fixed in the fixing hole 2014 of the volute 201 in an interference fit mode, 2 anti-rotation platforms 2021 are arranged on two sides of the friction gasket 202 to form an anti-rotation structure with the anti-rotation grooves 2013 of the volute 201, the rotor impeller part 40 generates axial force towards the impeller side in the working process, the end face of the graphite shaft sleeve 403 and the friction gasket 202 generate friction, and the friction gasket 202 with the smooth surface can reduce friction torque.

As shown in fig. 8 to 10, a sound-absorbing and vibration-damping pad 30 is further provided, and the sound-absorbing and vibration-damping pad 30 is made of an elastic material, is mounted in a mounting groove 704 on the end surface of the stator assembly 70, and is fixed by being restricted by the back surface of the rim of the waterproof cup 60.

The sound-absorbing and vibration-damping pad 30 is provided with a plurality of fixing grooves 301 at the inner hole, and is fixed with the stator assembly through the plurality of fixing grooves 301.

The plurality of hemispherical vibration reduction parts 302 are uniformly arranged on the end surface of the sound-absorbing vibration reduction sheet 30 and are in contact with the vibration reduction surface 6013 of the waterproof cup 601, the hemispherical vibration reduction parts 302 play a vibration reduction effect, the natural frequency of the vibration of the water pump can be adjusted to avoid resonance with the working frequency of an engine, and the resonance damage to parts of the water pump is prevented.

The sound absorption chamber 303 is arranged between each hemispherical vibration absorption part 302 of the end surface of the sound absorption vibration absorption pad, so that better sound absorption and noise reduction effects are achieved.

As shown in fig. 11-12, the rotor impeller member 40 described above includes a rotor portion that mates with a stator portion, which is mounted on a rotor shaft 602 in the water-resistant cup member 60, and an impeller 401.

The rotor portion includes a rotor body 402, a graphite sleeve 403, a magnetic ring 404, and a magnetic conductive ring 405.

The magnetic conductive ring 405 is assembled in an inner hole of the magnetic ring 404, is embedded in a mold, forms the rotor body 402 through an injection molding process, and coats a waterproof coating on the outer circle surface of the magnetic ring 404 to prevent the magnetic ring from being corroded and rusted.

The impeller 401 is provided with a plurality of involute blades 4011, a blade positioning column 4012 is arranged at the end of each blade 4011, the blade positioning columns 4012 are inserted into blade positioning holes in the end face of the rotor body 402, and the impeller 401 and the rotor body 402 are welded into a whole through ultrasonic welding.

The graphite shaft sleeves 403 are press-fitted in the mounting holes 4024 in an interference fit manner, the positioning surfaces 4025 are used for axial positioning, cooling liquid is arranged between the two graphite shaft sleeves 403, a suspension effect is formed on the rotor impeller component 40, the rotor impeller component 40 generates centrifugal force through the blades 4011 in the rotating process to realize flowing, the rotor impeller component 40 is designed to be a closed wet rotor and is completely immersed in the cooling liquid, the two graphite shaft sleeves 403 and the rotor shaft 602 form sliding friction fit, a dynamic shaft seal structure is not adopted, the service life of the pump is prolonged, the potential leakage risk is reduced by 50%, and the reliability is improved.

As shown in fig. 15, the control circuit board 80 is provided with various electronic components for controlling the motor, and also provided with 3 plug-in connection holes 801 and 3 phase terminal connection holes 802, and the plug-in connection holes 801 and the phase terminal connection holes 802 are respectively connected with the plug-in and the phase terminal of the stator assembly 70, and are fixed by soldering, so as to realize circuit connection and conduction between the control circuit board 80 and the winding and the plug bush.

As shown in fig. 16 to 18, the end cap 100 is made of an aluminum alloy material having a good heat conductivity, 4 screw mounting holes 1001 are provided around the end cap, and the end cap 100 is fixed to the side surface of the stator assembly 70 by the anti-slip screws 120.

The end cap 100 is provided with a mounting hole 1002 for mounting the respiratory membrane component 110.

The plurality of heat dissipation fins 1004 are arranged on the outer side surface of the end cover 100, so that the heat dissipation area is enlarged, heat generated by the control circuit board 80 can be dissipated through air flow, and the electronic components of the control circuit board 80 are prevented from being damaged due to overheating and losing functions.

The inner side surface of the end cover 100 is provided with a sealing ring 1005, which forms a seal with the sealing ring 90 mounted on the stator assembly 70, so that the sealing chamber can be better sealed, and thus, external water is prevented from entering the inside of the sealing chamber of the water pump, and the electronic components are prevented from short-circuit failure.

Two sides of the mounting hole 1002 of the end cap 100 are provided with dismounting grooves 1006, so that the breathing membrane component 110 can be replaced through the two side dismounting grooves 1006 by using a tool conveniently.

As shown in fig. 19-20, a respiratory membrane component 110 is also provided, the respiratory membrane component 110 comprising a base 1101, a respiratory membrane 1102 and a cover 1103.

The bottom of the base 1101 is provided with 4 through holes 11011, the bottom end of the through hole 11011 is communicated with the inside of the other sealed space 709, the upper end is communicated with the space above the base 1101 and sealed by the breathing membrane 1102, the upper circumference of the base 1101 is provided with 4 exhaust grooves 11012 to form an airflow channel between the breathing membrane 1102 and the outside, and the sealed chamber of the electronic cooling water pump forms an airflow channel with the outside through the breathing membrane 1102 and the exhaust grooves 11012 of the breathing membrane part 110.

The bottom of the base 1101 is provided with a guiding conical surface 11013, and the respiratory membrane component 110 can be conveniently installed in the installation hole 1002 of the end cover 100 through the guiding conical surface 11013.

The base 1101 is provided with a trapezoidal groove 11014 which is matched with the trapezoidal protrusion 1003 on the end cap 100 and is buckled with each other, so that when the base 1101 is inserted into the mounting hole 1002 of the end cap 100, the breathing membrane part 110 is difficult to be loosened from the end cap 100.

The breathing membrane 1102 is welded to the welding ring 11015 and the welding surface 11016 of the base 1101 by a thermal welding head, and the breathing membrane 1102 is fixed to the base 1101 so as to seal the through hole 11011.

The cover 1103 is provided with a locking groove 11031 which is engaged with a locking protrusion 11017 provided on the base 1101, and the cover 1103 is fitted to the base 1101 and locked into the locking protrusion 11017 of the base 1101, so that the cover 1103 is securely fixed to the base 1101.

Above-mentioned breathing membrane 1102's characteristic is that only allow the air to pass through, not allow water to pass through, control circuit board can produce a large amount of heats in the electronic cooling water pump working process, arouse the temperature rise, can lead to internal pressure to rise after the temperature rise to make inside and external production pressure differential, can exhaust through breathing membrane part 110 and realize inside and outside pressure differential balance, prevent that internal pressure is too big to cause destruction to water pump seal structure, influence sealed effect, lead to the water pump inefficacy, the effect of auxiliary cooling also can be played simultaneously.

The base 1101 is made of an elastic material, so that the base can deform to some extent during disassembly, thereby facilitating disassembly.

After the breathing membrane 1102 is used for a long time, although the cover 1103 can play a certain dustproof protection role, certain dust can be accumulated in the air intake and exhaust process, due to the material characteristics of the breathing membrane 1102, the dust is difficult to clean up through a manual cleaning method, the air intake and exhaust effects of the breathing membrane 1102 are affected, the cover 1103 can be conveniently taken off by using tools, the base 1101 is taken out from the mounting hole 1002 of the end cover 100, and a new breathing membrane part 110 is reinstalled.

Claims (7)

1. The utility model provides a from radiating electron cooling water pump, its includes volute component, rotor impeller part, stator module, control circuit board, end cover, stator module includes casing, stator component, the casing is inside to be divided into two parts by the baffle, sets up stator component on one of them part, and the inside rotor appearance chamber that sets up of casing that stator component corresponds, rotor impeller part include rotor part and impeller part, impeller part fixes on the rotor part, the rotor part arrange in the rotor appearance chamber, volute component seals at the casing other end and forms a space, impeller part arranges this space in, another part forms another space by end cover seal, control circuit board arranges in another space, its characterized in that: the water-proof cup is arranged in the rotor cavity, the outer wall of the cup body of the water-proof cup is tightly attached to the stator, one end of a rotor shaft of the rotor component is fixed to the bottom of the water-proof cup, and the other end of the rotor shaft is connected to a hole of the volute.

2. The self-dissipating electronic cooling water pump of claim 1, wherein: the bottom of the waterproof cup is provided with an anti-rotation flat, one end of a rotor shaft of the rotor component is fixed in the anti-rotation flat of the rotor shaft through interference fit, and the other end of the rotor shaft is connected in a hole of the volute.

3. The self-dissipating electronic cooling water pump of claim 1, wherein: the waterproof cup is characterized in that an axial positioning surface is arranged on the cup mouth of the waterproof cup, and the axial positioning surface is embedded in a concave ring groove of the end surface of the stator assembly for positioning.

4. The self-dissipating electronic cooling water pump of claim 1, wherein: the mouth of the waterproof cup is provided with a radial sealing surface which is put into the concave ring groove and sealed with the sealing surface of the volute.

5. The self-dissipating electronic cooling water pump of claim 3 or 4, wherein: the cup mouth of the waterproof cup is respectively provided with a radial vibration reduction surface, an axial positioning surface and a radial sealing surface from inside to outside.

6. The self-dissipating electronic cooling water pump of claim 1, wherein: and a through hole is formed in the middle of the partition plate, so that the partition plate is communicated with the rotor cavity.

7. The self-dissipating electronic cooling water pump of claim 1, wherein: the waterproof cup component is made of stainless steel.

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