CN216086405U - Oil-gas double-cooling motor - Google Patents
Oil-gas double-cooling motor Download PDFInfo
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- CN216086405U CN216086405U CN202122189813.8U CN202122189813U CN216086405U CN 216086405 U CN216086405 U CN 216086405U CN 202122189813 U CN202122189813 U CN 202122189813U CN 216086405 U CN216086405 U CN 216086405U
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- 238000001816 cooling Methods 0.000 title claims abstract description 115
- 238000011084 recovery Methods 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 230000017525 heat dissipation Effects 0.000 claims abstract description 22
- 239000000110 cooling liquid Substances 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 5
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Abstract
An oil-gas double-cooling motor belongs to the technical field of wheel power transmission, and particularly relates to wheel power transmission of an electric motorcycle and an electric bicycle. The motor comprises a motor shaft, a stator, a rotor and a hub steel ring, and is characterized by also comprising a motor working chamber, an oil liquid storage chamber, a circulating cooling chamber, a cooling oil heat dissipation circulating system, a cooling oil separation system and a motor cavity internal and external differential pressure balance system, wherein the motor cavity internal and external differential pressure balance system comprises an oil vapor recovery chamber, a vent hole, a waterproof vent valve and the like. The utility model has the beneficial effects that: the device can move the residual oil, vapor and liquid in the motor working chamber to the oil vapor recovery chamber for full vaporization and secondary recovery through the ventilation isolation oil discharge channel, so that the vapor pressure in the motor cavity is kept balanced, the air is smoothly discharged, the cooling liquid is prevented from rushing out of the motor and leaking, and oil-free liquid discharge is realized. The problem that oil is leaked and seeped from a power line and a sealing port due to thermal expansion of oil which cannot be solved by an oil cooling motor in the prior art is thoroughly solved.
Description
Technical Field
An oil-gas double-cooling motor belongs to the technical field of wheel power transmission, and particularly relates to wheel power transmission of an electric motorcycle and an electric bicycle.
Background
The existing hub motor of the electric vehicle only adopts an air heat dissipation mode, the heat dissipation efficiency of the heat dissipation mode is extremely low, particularly when the electric vehicle runs at high speed or runs in hilly and mountainous areas, the gradient is large, the load is heavy, the temperature rises when the motor runs in an overload mode, the motor is easily burnt out, and the magnetic steel sheet is forced to be demagnetized at high temperature. So reduced motor life greatly, electric motor car application range receives the limitation. The liquid cooling motor in the prior art has no cooling oil heat dissipation circulating system and oil-liquid separation system, so that the motor is extremely easy to generate high temperature, if the liquid cooling motor has no oil-liquid separation system, oil in air gaps of a stator and a rotor of the liquid cooling motor cannot be discharged at all, rotary oil resistance can be generated, the oil quantity is slightly more, or the resistance is higher at a higher rotating speed, so that the driving endurance mileage and the whole machine performance of the electric vehicle are undoubtedly reduced. Therefore, the solution is that only less cooling oil can be added to reduce the oil resistance loss, but the cooling effect of the less cooling oil is poor, particularly when the motor runs into a continuous steep slope in hills and mountainous areas, the current of the motor is large, the heat productivity of a winding is rapidly increased, the temperature in the motor is rapidly increased, not only is the temperature of the cooling oil increased, but also the pressure in the inner cavity of the motor is increased, the pressure inside and outside the motor is unbalanced, the cooling oil in the motor immediately generates steam pressure, and the steam pressure is released to easily seep oil to the outside of the motor through a cable port, an oil seal and other sealing components, which are pain points and common faults of the oil-cooled motor in the prior art, so that the consumption of the cooling oil is accelerated, and the motor loses the protection effect of the cooling oil. In the current liquid cooling motor, the problem of exhausting and discharging oil cannot be thoroughly solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provides a novel motor for an electric motorcycle and an electric bicycle, which can realize circulation of multiple oil volumes without oil resistance, can thoroughly solve the problems of exhaust and oil discharge of a liquid-cooled motor and has a good cooling effect. The technical scheme is as follows:
an oil-gas double-cooling motor comprises a motor shaft, a stator, a rotor and a wheel hub steel ring, wherein the stator is fixed on the motor shaft, the rotor is sleeved on the stator, the outer ring of the rotor is fixedly connected with the wheel hub steel ring in a welding manner, and two ends of the rotor are fixedly connected with a motor left end cover and a motor right end cover respectively; the key technology is that a rotor is provided with a connecting ring, the connecting ring is provided with a support ring, the support ring is connected with a left end cover of a motor, a cooling liquid circulating cover is arranged in the left end cover of the motor, a perfusion block and an oil inlet hole are arranged on the cooling liquid circulating cover, an oil nozzle is arranged on the inner side of the cooling liquid circulating cover, and an oil outlet groove is arranged on the circumferential position of the cooling liquid circulating cover; the cooling oil circulation system comprises a cooling oil circulation system, a cooling oil separation system, a motor working chamber, a stator, a magnetic steel sheet, a rotor, a connecting ring, a support ring, a cooling oil circulation system and a cooling oil separation system, wherein the cooling oil circulation system comprises a space formed by the cooling liquid circulation cover, the motor left end cover, the connecting ring and the support ring; an oil-gas recovery chamber is arranged outside a left end cover of the motor to form a motor cavity internal-external differential pressure balance system, one end of the oil-gas recovery chamber is sleeved on a motor shaft and fixed through a positioning shaft sleeve, the other end of the oil-gas recovery chamber is sleeved on the left end cover of the motor, one or more vent holes are formed in the circumferential position of the oil-gas recovery chamber, and an airflow pipe or a waterproof vent valve is fixedly connected in one or more of the vent holes respectively.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model is provided with a motor cavity internal and external differential pressure balance system, and the following structure of the balance system has positive effects on the device: firstly, an oil vapor recovery chamber of the balance system is connected with a plurality of airflow pipes or waterproof vent valves; secondly, forming an oil-steam labyrinth passage by all communicated spaces after connecting a plurality of ventilation isolated oil discharge passages, oil seals and exhaust holes with different angles and directions and parts in an oil-steam recovery chamber; and a space is arranged between the exhaust hole and the air flow pipe or the waterproof vent valve connecting port, just like a recycling chamber. The structures can move the residual oil, steam and oil in the motor working chamber to the oil and steam recovery chamber for full vaporization and secondary recovery through the ventilation isolation oil discharge channel, particularly, the main function of the oil and steam labyrinth channel is to discharge air pressure to recover the oil and steam, so that the temperature and the air flow in the motor can be sufficiently exchanged, under the condition of large temperature difference between the inside and the outside of the motor cavity, the steam pressure in the motor cavity is kept balanced, the air can be smoothly discharged, the oil and steam can be perfectly converted and recovered, the cooling liquid is prevented from being gushed out to the outside of the motor and leaking, and oil-free liquid discharge is realized. The problems that in the prior art, an oil liquid cooling motor cannot solve the problems that the performance is poor and oil is leaked and seeped from a power line and a sealing port due to thermal expansion of oil liquid after the oil liquid is heated are solved completely.
2. The balance system for the pressure difference between the inside and the outside of the motor cavity provides a good low-temperature working condition for the motor of the electric vehicle. The actual road test data shows that the technical scheme and the existing oil liquid cooling electric vehicle are obtained through a comparison test under the same conditions of continuous two kilometers of steep slopes: in the prior art, when the oil liquid cooling electric vehicle runs for two or half times (the accumulated distance is 5 kilometers), the vehicle is burnt out and cannot run, and the temperature in the electric vehicle is 156 ℃; the internal temperature of the motor of the electric vehicle in the technical scheme is 98 ℃ under the same condition, and the design limit temperature of the motor is 120 ℃. The following table is comparative test data:
3. the other structure of the motor cavity internal and external differential pressure balance system is that a waterproof vent valve is arranged in a vent hole of an oil vapor recovery chamber, the purposes of water resistance, dust prevention and ventilation can be achieved, and the structure is simple and convenient to maintain.
4. The motor cavity internal and external differential pressure balance system is arranged outside the motor shell, and the motor cavity internal and external differential pressure balance system has enough large space to easily install an oil vapor recovery chamber, and can better exert the best performance because the motor cavity internal and external differential pressure balance system is positioned outside the motor shell. Therefore, the strength of the motor shaft is ensured, the air flow pipe can be prevented from being damaged in the carrying process, the air flow pipe does not need to be detached when the brake is repaired and replaced after sale, the maintenance and the installation are facilitated, the manufacturing process is simplified, the manufacturing cost is reduced, the safety performance is improved, and the like.
5. The utility model has a cooling oil heat dissipation circulation system, a motor working chamber is communicated with an oil liquid storage and circulation cooling chamber for circulation, and the oil quantity stored in the oil liquid storage and circulation cooling chamber can be automatically adjusted, released and stored according to the rotating speed of the motor. The cooling oil mass is sufficient, and circulation in-process motor does not have the oil resistance loss, and the more accurate motor winding, the stator oil spout of aiming of cooling fluid accessible fuel sprayer simultaneously, and sustainable heat absorption that will generate heat the source winding loads into the circulative cooling room and carries out circulative cooling and reduce the motor temperature to reduce the motor fault rate, reduce use cost, increase life makes the best efficiency of electric motor car performance and performance.
6. The cooling oil separation system is further arranged, when a motor rotor rotates, under the action of centrifugal force, cooling oil in a motor working chamber is rapidly and forcibly discharged to an oil liquid storage and circulating cooling chamber, oil liquid in a motor stator and a rotor air gap is separated and discharged immediately, and the cooling oil cannot stay in the air gap between the rotor and the stator, so that the purpose of circulating heat dissipation is achieved, magnetic steel is protected from being demagnetized, a coil is not easy to burn, the problem of oil resistance loss of the motor air gap is solved, the cooling heat dissipation effect of the motor is excellent, the purpose of oil resistance-free work of the motor is achieved, the effect of no oil liquid leakage is achieved, and the purpose of zero-pollution environmental protection is achieved. The cooling oil heat dissipation circulation system and the cooling oil separation system form a 'double-cooling' motor.
7. The motor rotor, the connecting ring and the support ring are of an integrated structure, manufacturing processes and bolt fixing installation points are reduced, the support ring is not required to be fixed with the connecting ring through bolts, the connecting ring is not required to be fixed with the motor rotor through bolts, split bolt connection is eliminated, a hub steel ring welding process is simplified, and the risk of oil leakage of welding seams is avoided.
8. In conclusion, the utility model has three independent systems, namely a cooling oil heat dissipation circulating system, a cooling oil separation system and a motor cavity internal and external differential pressure balancing system. Through experimental tests, the three independent systems operate coordinately, so that the motor has an extremely high intelligent control function in the working process. When the electric motor car is overloaded or goes up the abrupt slope low-speed heavy current high temperature and goes, the motor speed is lower (below 300 revolutions per minute), at this moment, under the effect of centrifugal force, the oil mass that cooling oil in the motor was stored along with fluid, the indoor chamber of cooling circulation "rotatory showy" storage is less, then the oil mass that gets into inlet port cooling cycle is just more, the cooling effect is better, so this technical scheme can be according to motor speed height automatically regulated, the extreme speed cooling spray operation mode under the large-traffic fluid circulation condition of automatic control. When the electric vehicle runs on a flat road or at a normal high speed and low temperature under a rated load, the cooling oil in the motor is stored along with the oil, the oil stored in the cavity of the circulating cooling chamber is rotated and floated, and the oil entering the oil inlet hole is less in cooling circulation (the oil is stored in the oil storage chamber and the circulating cooling chamber because the oil is rotated and floated due to the surrounding of the more oil), but the electric vehicle runs at a low temperature and does not need large-flow circulating cooling, so the technical scheme can automatically adjust the rotation speed of the motor and automatically control the slow temperature-reducing splashing running mode under the condition of small-flow oil-liquid circulation, thereby ensuring that the motor works in an excellent environmental condition and continuously exerting the highest performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a partially enlarged structure of FIG. 1;
FIG. 3 is a schematic structural view of a motor cavity internal and external differential pressure balancing system according to the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of another embodiment of the present invention;
FIG. 6 is a partially enlarged schematic view of FIG. 5;
FIG. 7 is another schematic structural diagram of the internal and external differential pressure balancing system of the motor cavity according to the present invention;
FIG. 8 is a cross-sectional view of FIG. 7;
FIG. 9 is a perspective view of the positioning sleeve of the present invention;
FIG. 10 is a schematic view of the assembled structure of FIG. 1;
FIG. 11 is a schematic view of yet another embodiment of the present invention;
FIG. 12 is an enlarged partial schematic view of FIG. 11;
FIG. 13 is a schematic view of another embodiment of the present invention;
FIG. 14 is an enlarged partial schematic view of FIG. 13;
FIG. 15 is a perspective view of the flange of the present invention;
FIG. 16, which is a cross-sectional view of FIG. 15;
FIG. 17 is a schematic view of a three-dimensional structure of a fan blade according to the present invention;
FIG. 18 is a schematic perspective view of a rotor of the motor of the present invention;
FIG. 19 is a perspective view of the cooling fluid circulation cover according to the present invention;
FIG. 20 is an enlarged view of a perfusion block according to the present invention;
FIG. 21 is a schematic perspective view of another embodiment of the cooling fluid circulation cover of the present invention;
FIG. 22 is a schematic perspective view of the left end cap of the motor of the present invention;
fig. 23 is a schematic perspective view of the left end cover of the motor of the present invention in another direction.
Detailed Description
Example 1:
referring to fig. 1-4, 9, 10, 18-23, an oil-gas double-cooling motor comprises a motor shaft 14, a stator 12, a rotor 2 and a hub steel ring 1, wherein the stator 12 is fixed on the motor shaft 14, the rotor 2 is sleeved on the stator 12, an outer ring of the rotor 2 is fixedly connected with the hub steel ring 1 in a welding manner, and two ends of the rotor 2 are fixedly connected with a motor left end cover 4 and a motor right end cover 15 respectively; the key technology is that a connecting ring 2.1 is arranged on a rotor 2, a support ring 2.2 is arranged on the connecting ring 2.1, the support ring 2.2 is connected with a left end cover 4 of a motor, a cooling liquid circulation cover 9 is fixedly arranged on the right side in the left end cover 4 of the motor through a support column 4.6, a plurality of perfusion blocks 9.1 are arranged at the circumferential position outside the cooling liquid circulation cover 9, an oil inlet hole 9.4 is arranged at the position of the inner half-surrounding of an arc of the perfusion block 9.1, a plurality of oil nozzles 9.2 are arranged at the circumferential position of the inner side of the cooling liquid circulation cover 9 corresponding to the oil inlet hole 9.4, and a plurality of oil outlet grooves 9.3 are arranged at the circumferential position of the cooling liquid circulation cover 9, which is adjacent to the connecting ring 2.1; a space formed by the cooling liquid circulation cover 9, the motor right cover 15 and the rotor 2 forms a motor working chamber 13, a space formed by the cooling liquid circulation cover 9, the motor left end cover 4, the connecting ring 2.1 and the support ring 2.2 forms an oil liquid storage and circulation cooling chamber 3, the motor working chamber 13, the oil liquid storage and circulation cooling chamber 3 form a cooling oil heat dissipation circulation system, and the oil spray nozzle 9.2 is positioned in the motor working chamber 13, so that the motor working chamber 13, the oil liquid storage and circulation cooling chamber 3 are mutually communicated through the oil outlet groove 9.3, the oil inlet hole 9.4 and the oil spray nozzle 9.2, an air gap between the motor working chamber 13 and a stator 12 and a magnetic steel sheet 11 in the motor working chamber is communicated to the oil liquid storage and circulation cooling chamber 3 through the oil outlet groove 9.3, and the passages form a cooling oil separation system; as shown in fig. 1 to 4, an oil vapor recovery chamber 5 is installed in a cavity 4.3 outside a left end cover 4 of a motor to form a balance system of internal and external pressure difference of the motor cavity, one end of the oil vapor recovery chamber 5 is sleeved on a motor shaft 14 through a central shaft hole 5.5 and fixed through a positioning shaft sleeve 6, the oil vapor recovery chamber 5 is in a static state after being fixed by the positioning shaft sleeve 6, the other end of the oil vapor recovery chamber 5 is sleeved on the central shaft sleeve 4.4 of the left end cover 4 of the motor through an oil seal 8, one or more vent holes 5.2 are formed in the circumferential position of the oil vapor recovery chamber 5, airflow pipes 16 are respectively and fixedly connected in the one or more vent holes 5.2, and waterproof vent valves 5.4 are installed at the other end of the airflow pipes 16.
As shown in fig. 9, a positioning pin 6.1 is provided at a flange circumferential position of the positioning boss 6, and the positioning pin 6.1 is fitted into a positioning hole 5.3 of the oil vapor recovery chamber 5 to prevent the oil vapor recovery chamber 5 from rotating around the motor shaft 14, thereby being fixed in a stationary state.
The oil-gas recovery chamber 5 has the function of firstly moving the oil-gas-oil liquid in the working chamber 13 in the working process, then isolating the oil-gas-oil liquid and then performing secondary recovery.
As shown in fig. 2, a first ventilating and isolating oil drain passage 4.7 is formed in the inner wall of the bearing hole of the motor left end cover 4, a second ventilating and isolating oil drain passage 14.1 is formed in the motor shaft 14, a third ventilating and isolating oil drain passage 4.8 is formed between the motor shaft 14 and the central shaft sleeve 4.4 of the motor left end cover 4, and a fourth ventilating and isolating oil drain passage 4.8.1 is formed by the gap between the balls of the bearing in the bearing hole of the motor left end cover 4 and the retainer. The four ventilation isolated oil discharge channels are communicated with each other, can isolate and move the residual oil, the gasoline and the liquid in the working chamber of the motor into the gasoline recovery chamber 5 for secondary vaporization recovery, and are communicated with a cooling oil heat dissipation circulating system.
An oil vapor labyrinth passage 5.1 is arranged in the oil vapor recovery chamber 5, and the oil vapor recovery chamber mainly has the functions of heat dissipation, exhaust and secondary oil liquid recovery.
The flow injection block 9.1 is of a semicircular arc structure, one end of the semicircular arc is provided with a flow pushing tail 9.1.1, the other end of the semicircular arc is provided with a flow guide block 9.1.2, a plurality of auxiliary flow pushing blocks 4.2 are further arranged at the circumferential position of the inner side of the motor left end cover 4, the auxiliary flow pushing blocks 4.2 and the flow injection block 9.1 are located in the oil liquid storage and circulation cooling chamber 3, and the auxiliary flow pushing blocks 4.2 and the flow injection block 9.1 jointly act to push cooling oil to increase the oil injection quantity of the oil injection nozzle 9.2.
An oil seal 8 is also arranged between the positioning shaft sleeve 6 and the oil vapor recovery chamber 5 to prevent oil from leaking from a shaft hole of the positioning shaft sleeve 6; and oil seals 8 are arranged at the left end and the right end of a central bearing hole 15.3 of the right motor cover 15, so that the sealing performance of the position is enhanced, and cooling oil is prevented from leaking into the brake drum 15.2.
A plurality of first air guide heat dissipation ribs 4.1 are arranged at the outer circumferential position of the motor left end cover 4; as shown in fig. 1, a plurality of second air guiding and heat dissipating ribs 15.1 are further disposed at the outer circumferential position of the right cover 15 of the motor to accelerate heat dissipation of the brake drum 15.2.
And a cooling oil visual observation window 4.5 is also arranged on the left end cover 4 of the motor.
The working principle of the embodiment is as follows:
when the vehicle is at rest, the motor does not rotate, at the moment, the cooling oil in the motor is in a rest state, the oil inlet hole 9.4 is submerged by the surface of the cooling oil, the motor magnetic steel sheet 11, the stator 12 and the motor coil winding 10 at the lower end are soaked in the cooling oil, and the volume of the cooling oil is added according to a certain proportion according to the volume of the motor working chamber 13 and the oil storage and circulating cooling chamber 3. The motor shaft 14 is fixed on the frame and the rear bottom fork, as shown in fig. 1 and fig. 2, the oil vapor recovery chamber 5 is externally hung on the left end cover 4 of the motor, one end of the oil vapor recovery chamber 5 is fixed by the positioning shaft sleeve 6, the other end of the oil vapor recovery chamber 5 is fixed by the outer diameter of the oil seal 8, and the oil vapor recovery chamber 5 does not rotate along with the left end cover 4 of the motor and is in a static state when working. When the vehicle is ridden, motor rotor 2 begins to rotate, the inside cooling oil of motor under the promotion of the centrifugal force that produces when motor rotor 2 is rotatory, from motor studio 13 through going out oil groove 9.3 to fluid storage, the oil extraction of cooling cycle room 3 is filled rapidly, the instantaneous reduction of cooling oil in the motor studio 13 simultaneously, because the oil extraction flow is greater than the oil feed oil volume, force the cooling oil in the motor air gap also by the oil groove 9.3 thoroughly discharge that goes out of the cooling liquid circulation cover 9 circumference position, and then accomplished the recovery process of first time oil vapour fluid. At the moment, no oil liquid in the air gap of the motor hinders the rotation of the rotor, so that the motor cannot generate oil resistance. When the motor reaches a certain rotating speed and the cooling oil in the oil storage and circulating cooling chamber 3 is filled to a certain capacity, the cooling oil is pressed into the oil inlet hole 9.4 under the pushing of the auxiliary flow pushing block 4.2 and the flow filling block 9.1, then the cooling oil is sprayed onto the motor coil winding 10 and the heating parts in the motor working chamber 13 through the oil nozzle 9.2 to be rapidly cooled, and the cooling oil after absorbing heat is discharged and filled into the oil storage and circulating cooling chamber 3 through the oil outlet groove 9.3 under the action of centrifugal force, so that the next circulation is continuously carried out. When the vehicle runs on a continuous slope, the current of the motor is increased, the temperature in the motor is increased, the pressure of the inner cavity of the motor is increased, the cooling oil in the motor is evaporated and expanded at the moment, the oil vapor enters the oil vapor recovery chamber 5 through the first ventilation isolation oil discharge channel 4.7, the second ventilation isolation oil discharge channel 14.1, the third ventilation isolation oil discharge channel 4.8 and the fourth ventilation isolation oil discharge channel 4.8.1 (formed by the gap between the bearing ball and the retainer) in a movable isolation mode, and the secondary oil vapor is recovered through the oil vapor labyrinth channel 5.1. After high-temperature oil vapor enters the oil vapor recovery chamber 5, the oil vapor recovery chamber 5 is located outside the motor shell, and the temperature of the oil vapor recovery chamber is far lower than the temperature inside the motor, so that the high-temperature oil vapor is retained in the oil vapor labyrinth passage 5.1 and converted into oil liquid after being cooled, and then the sucked oil liquid is distributed to the first ventilation isolation oil discharge passage 4.7, the second ventilation isolation oil discharge passage 14.1 and the fourth ventilation isolation oil discharge passage 4.8.1 through the third ventilation isolation oil discharge passage 4.8 and then flows back to the motor working chamber 13. Because the first ventilation isolation oil drain passage 4.7 and the fourth ventilation isolation oil drain passage 4.8.1 are both positioned in the bearing hole, the second ventilation isolation oil drain passage 14.1 is positioned on the motor shaft 14, and the third ventilation isolation oil drain passage 4.8 is positioned between the motor shaft 14 and the central shaft sleeve 4.4 of the motor left end cover 4, the first ventilation isolation oil drain passage and the fourth ventilation isolation oil drain passage both belong to rotary dynamic suction type ventilation isolation oil drain passages. The recovery efficiency of the oil recovery device is several times higher than that of a static ventilation isolation oil drainage channel, and the recovered oil is immediately sent back to the motor working chamber 13 to carry out the next circulation process under the action of centrifugal force. In the working cycle process, the height of the high-temperature oil vapor and the oil liquid level is not higher than the inlet of the rotary third air-isolated oil discharge channel 4.8 with suction, and practical tests show that the oil liquid level can not cross the lower inlet corresponding to the third air-isolated oil discharge channel 4.8 at all, so that no oil is discharged from the vent hole 5.2 after the oil vapor is recovered by the oil vapor recovery chamber 5. The vent 5.2 is connected with the airflow pipe 16, the other end of the airflow pipe 16 is provided with a waterproof vent valve 5.4, the dustproof function is realized, and gas is discharged through the waterproof vent valve 5.4 finally.
In conclusion, the oil-gas double-cooling motor has the advantages that cooling oil cannot stay in an air gap between the rotor and the stator in the working process, so that the purpose of circulating heat dissipation is achieved, magnetic steel is protected from being demagnetized, a coil is not easy to burn, the defect that the air gap of the motor has no oil resistance loss is overcome, and meanwhile, the internal and external pressure difference can be balanced through the oil-gas recovery chamber 5 when the motor runs at a high temperature, and oil leakage is prevented.
Example 2:
referring to fig. 5 to 9 and 18 to 23, the motor cooling oil heat dissipation circulation system and the cooling oil separation system in this embodiment are the same as those in embodiment 1, and are not described herein again, except for the difference in the internal and external differential pressure balance system of the motor cavity. An oil vapor recovery chamber 5 is arranged in a cavity 4.3 outside a motor left end cover 4 to form a motor cavity internal and external differential pressure balance system, one end of the oil vapor recovery chamber 5 is sleeved on a motor shaft 14 through a central shaft hole 5.5 and is fixed through a positioning shaft sleeve 6, the oil vapor recovery chamber 5 is in a static state after being fixed by the positioning shaft sleeve 6, the other end of the oil vapor recovery chamber 5 is sleeved on the central shaft sleeve 4.4 of the motor left end cover 4 through an oil seal 8, one or more vent holes 5.2 are arranged at the circumferential position of the oil vapor recovery chamber 5, and waterproof vent valves 5.4 are respectively arranged in the one or more vent holes 5.2 to achieve the purposes of ventilation, motor internal and external differential pressure balance, water prevention and oil leakage prevention. The working principle is the same as in embodiment 1.
Example 3:
referring to fig. 11, 12, and 15 to 23, the motor cooling oil heat dissipation circulation system and the cooling oil separation system in this embodiment are the same as those in embodiment 1, and are not described herein again, but are different in a motor cavity internal and external differential pressure balancing system. The internal and external pressure difference balance system of the motor cavity is characterized in that a shaft sleeve extension section of a motor left end cover 4 is used as a rotary oil vapor recovery chamber 4.9, so that the rotary oil vapor recovery chamber 4.9 and the motor left end cover 4 form a built-in integrated structure, a flange plate 18 is fixedly arranged in the rotary oil vapor recovery chamber 4.9 through a positioning shaft sleeve 6, one or more vent holes 5.2 are formed in the circumferential position of the flange plate 18, and waterproof vent valves 5.4 are respectively arranged in the one or more vent holes 5.2. The center of the flange 18 is provided with a shaft hole 18.1, the circumferential position of the flange is provided with a positioning hole 5.3, and a positioning pin 6.1 on the positioning shaft sleeve 6 is embedded into the positioning hole 5.3 to prevent the flange 18 from rotating around the motor shaft 14; an oil seal 8 is arranged between the rotary oil vapor recovery chamber 4.9 and the flange plate 18, and an oil seal 8 is also arranged between the positioning shaft sleeve 6 and the flange plate 18 to prevent oil from leaking from a shaft hole of the positioning shaft sleeve 6; and a plurality of fifth ventilation isolated oil drainage channels 4.10 are arranged at the circumferential position of the left end cover 4 of the motor, which is close to the bearing hole.
A fan blade 17 is arranged on the left side of a flange plate 18 in a cavity 4.3 on the left side outside a left end cover 4 of the motor, and a plurality of blades 17.1 are arranged on the circumference of the fan blade 17.
The working principle of the embodiment is as follows:
the working principle of the cooling oil heat dissipation circulation system and the cooling oil separation system in the embodiment is the same as that in embodiment 1, and the difference is a pressure difference balance system inside and outside the motor cavity, which is not described herein again. When the vehicle runs on a continuous slope, the current of the motor is increased, the temperature in the vehicle is increased, the pressure of the inner cavity of the motor is increased, and at the moment, the cooling oil in the vehicle evaporates and expands to be recycled from the secondary oil steam to the oil steam labyrinth passage 5.1 through the rotary suction type fourth air isolation oil discharge passage 4.8.1 and the fifth air isolation oil discharge passage 4.10. Specifically be when high temperature oil vapour through the fourth, after the fifth logical gas separates oil drain path entering oil vapour labyrinth way 5.1, because rotatory oil vapour recovery room 4.9 is located the outside of motor left end lid 4, its temperature is far less than the inside temperature of motor, so high temperature oil vapour meets cold, is detained in oil vapour labyrinth way 5.1 and turns into fluid, inhales through the fifth logical gas and separates oil drain path 4.10 and send back to accomplish the oil vapour of the second major part and change fluid recovery in motor studio 13. The remaining part of the oil, the gasoline and the liquid can be subjected to the next recycling process together with the later entering oil, the steam and the liquid; practical tests show that the liquid level of the cooling oil is sucked and recovered just to the lower inlet corresponding to the fifth ventilation isolation oil drain passage 4.10. So that no oil is discharged from the vent holes 5.2 after being recovered by the oil-gas labyrinth passage 5.1. The fan blades 17 can continuously supply axial air cooling heat dissipation to the motor left end cover 4, the rotary oil recovery chamber 4.9, the oil storage and circulating cooling chamber 3 along with the rotation of the motor, and simultaneously cool the flange plate 18, so that the conversion of high-temperature oil vapor to oil in the oil storage and circulating cooling chamber 3 and the motor working chamber 13 is accelerated, and the oil vapor recovery is rapidly completed. The rotary oil recovery chamber 4.9 and the motor left end cover 4 are of an integral structure, and the rotary oil recovery chamber 4.9 rotates along with the motor left end cover 4, so that the rotary oil vapor recovery chamber 4.9 is in a rotating state during working; the flange 18 is fixed on the motor shaft through the positioning shaft sleeve 6, and an oil seal 8 is arranged between the flange 18 and the rotary oil recovery chamber 4.9, so that the flange 18 is not moved in the working process.
Example 4:
referring to fig. 13 to 23, the motor cooling oil heat dissipation circulation system and the cooling oil separation system in this embodiment are the same as those in embodiment 3, and are not described herein again, but are different in a motor cavity internal and external differential pressure balance system. The internal and external pressure difference balance system of the motor cavity is characterized in that a shaft sleeve extension section of a motor left end cover 4 is used as a rotary oil vapor recovery chamber 4.9, the rotary oil vapor recovery chamber 4.9 and the motor left end cover 4 form an integrated structure, a flange plate 18 is fixedly installed in the rotary oil vapor recovery chamber 4.9 through a positioning shaft sleeve 6, a plurality of vent holes 5.2 are formed in the circumferential position of the flange plate 18, an airflow pipe 16 is fixedly connected in one or more vent holes 5.2 respectively, and a waterproof vent valve 5.4 is installed at the other end of the airflow pipe 16. The working principle is the same as in embodiment 3.
Fig. 7 shows a motor wire.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, and not limited to the scope of the utility model, it will be understood that various changes and modifications within the scope of the appended claims, and various names of components, can be recognized by those skilled in the art, and it is intended that such changes and modifications be included within the scope and intent of the present invention, as expressed in the following claims, and all changes and modifications which come within the meaning and range of equivalency of the claims are to be embraced therein.
Claims (9)
1. An oil-gas double-cooling motor comprises a motor shaft (14), a stator (12), a rotor (2) and a hub steel ring (1), wherein the stator (12) is fixed on the motor shaft (14), the rotor (2) is sleeved on the stator (12), the outer ring of the rotor (2) is fixedly connected with the hub steel ring (1) in a welding manner, and two ends of the rotor (2) are fixedly connected with a motor left end cover (4) and a motor right end cover (15) respectively; the cooling system is characterized in that a connecting ring (2.1) is arranged on a rotor (2), a support ring (2.2) is arranged on the connecting ring (2.1), the support ring (2.2) is connected with a left end cover (4) of a motor, a cooling liquid circulation cover (9) is installed in the left end cover (4) of the motor, a flow filling block (9.1) and an oil inlet hole (9.4) are arranged on the cooling liquid circulation cover (9), an oil nozzle (9.2) is arranged on the inner side of the cooling liquid circulation cover (9), and an oil outlet groove (9.3) is formed in the circumferential position of the cooling liquid circulation cover (9); a space formed by the cooling liquid circulation cover (9), the motor right cover (15) and the rotor (2) forms a motor working chamber (13), a space formed by the cooling liquid circulation cover (9), the motor left end cover (4), the connecting ring (2.1) and the support ring (2.2) forms an oil liquid storage and circulation cooling chamber (3), the motor working chamber (13), the oil liquid storage and circulation cooling chamber (3) form a cooling oil heat dissipation circulation system, and air gaps among the motor working chamber (13), the stator (12) and the magnetic steel sheet (11) are communicated to the oil liquid storage and the circulation cooling chamber (3) through the oil outlet groove (9.3) to form a cooling oil separation system; an oil vapor recovery chamber (5) is arranged outside a motor left end cover (4) to form a motor cavity internal and external differential pressure balance system, one end of the oil vapor recovery chamber (5) is sleeved on a motor shaft (14), the other end of the oil vapor recovery chamber is sleeved on a central shaft sleeve 4.4 of the motor left end cover (4), one or more vent holes (5.2) are formed in the circumferential position of the oil vapor recovery chamber (5), and an airflow pipe (16) or a waterproof vent valve (5.4) is fixedly connected in the one or more vent holes (5.2) respectively.
2. The oil-gas double-cooling motor as claimed in claim 1, wherein an oil-gas labyrinth passage (5.1) is provided in the oil-gas recovery chamber (5).
3. The oil-gas double-cooling motor as claimed in claim 1, wherein the other end of the airflow pipe (16) is provided with a waterproof vent valve (5.4).
4. The oil-gas double-cooling motor as claimed in claim 1, wherein a positioning shaft sleeve (6) is mounted on the motor shaft (14), a positioning pin (6.1) is arranged on the positioning shaft sleeve (6), and the positioning pin (6.1) is embedded in the oil-gas recovery chamber (5).
5. The oil-gas double-cooling motor as claimed in claim 1, wherein a first ventilating and isolating oil drain channel (4.7) is formed in the inner wall of a bearing hole of the motor left end cover (4), a second ventilating and isolating oil drain channel (14.1) is formed in the motor shaft (14), a third ventilating and isolating oil drain channel (4.8) is formed between the motor shaft (14) and a central shaft sleeve (4.4) of the motor left end cover (4), a fourth ventilating and isolating oil drain channel (4.8.1) is formed by a gap between a ball of a bearing in the bearing hole of the motor left end cover (4) and a retainer, and a plurality of fifth ventilating and isolating oil drain channels (4.10) are formed in the circumferential position, close to the bearing hole, of the motor left end cover (4).
6. The oil-gas double-cooling motor as claimed in claim 1, wherein the flow filling block (9.1) is a semicircular arc structure, one end of the semicircular arc is a plug flow tail (9.1.1), the other end of the semicircular arc is a flow guide block (9.1.2), and an auxiliary plug flow block (4.2) is further arranged on the left end cover (4) of the motor.
7. The oil-gas double-cooling motor as claimed in claim 1, wherein an oil seal (8) is arranged between the positioning shaft sleeve (6) and the oil-gas recovery chamber (5); and oil seals (8) are arranged at the left end and the right end of a central bearing hole (15.3) of the right motor cover (15).
8. The oil-gas double-cooling motor as claimed in claim 1, wherein the internal-external differential pressure balance system of the motor cavity is characterized in that a shaft sleeve extension section of the motor left end cover (4) is used as a rotary oil-gas recovery chamber (4.9), a flange plate (18) is fixedly arranged in the rotary oil-gas recovery chamber (4.9) through a positioning shaft sleeve (6), one or more vent holes (5.2) are formed in the circumferential position of the flange plate (18), and a waterproof vent valve (5.4) or an airflow pipe (16) is respectively arranged in the one or more vent holes (5.2).
9. The oil-gas double-cooling motor as claimed in claim 8, wherein the flange (18) is provided with a shaft hole (18.1) at the center, the flange (18) is provided with a positioning hole (5.3) at the circumferential position, and the positioning pin (6.1) on the positioning shaft sleeve (6) is embedded into the positioning hole (5.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122189813.8U CN216086405U (en) | 2021-09-10 | 2021-09-10 | Oil-gas double-cooling motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122189813.8U CN216086405U (en) | 2021-09-10 | 2021-09-10 | Oil-gas double-cooling motor |
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| CN216086405U true CN216086405U (en) | 2022-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794331A (en) * | 2021-09-10 | 2021-12-14 | 李绵军 | Oil-gas double-cooling motor |
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2021
- 2021-09-10 CN CN202122189813.8U patent/CN216086405U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794331A (en) * | 2021-09-10 | 2021-12-14 | 李绵军 | Oil-gas double-cooling motor |
| CN113794331B (en) * | 2021-09-10 | 2024-05-31 | 李绵军 | Oil-gas double-cooling motor |
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