CN213906499U - Water-cooling type external rotor motor - Google Patents
Water-cooling type external rotor motor Download PDFInfo
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- CN213906499U CN213906499U CN202023335824.4U CN202023335824U CN213906499U CN 213906499 U CN213906499 U CN 213906499U CN 202023335824 U CN202023335824 U CN 202023335824U CN 213906499 U CN213906499 U CN 213906499U
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Abstract
The utility model provides a water-cooling type external rotor electric machine that cooling effect is good. The utility model provides a water-cooling type external rotor electric machine, including front end housing, rear end housing, axis, stator axle sleeve, stator and rotor, the stator axle sleeve includes stator axle sleeve shell and stator axle sleeve inner core, outside stator axle sleeve inner core was located to stator axle sleeve shell cover, stator axle sleeve shell was equipped with water inlet component and goes out water component, stator axle sleeve inner core surface was equipped with spiral groove, water inlet component and play water component are connected respectively to spiral groove both ends, stator axle sleeve inner core both ends and the position of being connected of stator axle sleeve shell are equipped with the sealing member. The utility model discloses a cooling water takes away the heat that the motor produced, can reduce motor operating temperature to a great extent, and it is long when improving motor operation, and through set up the spiral groove at stator axle sleeve inner core, has increased the length and the volume of water course, and cooperates the water course structure in the stator axle sleeve, is favorable to the circulation flow of cooling water, can not make the cooling water save the certain department of water course in the stator axle sleeve.
Description
Technical Field
The utility model relates to an external rotor electric machine, in particular to water-cooling type external rotor electric machine.
Background
The rotor of the outer rotor motor rotates along with the motor shell, the motor spindle is fixed, the shell is used as the rotor, the inner part and the spindle are used as the stator, the outer rotor motor is shorter than the inner rotor motor, and the outer rotor motor is an economic and effective solution particularly suitable for large-scale series. The permanent magnets of the outer rotor motor are located on a rotor housing that rotates around an inner stator with windings. Because the inertia moment of the rotor is higher, the torque fluctuation of the outer rotor motor is smaller than that of the inner rotor motor.
When the outer rotor motor works normally, the interior of the coil gradually heats, heat is conducted to the stator shaft sleeve through the stator punching sheet group, then is conducted to the front end cover and the shaft, and finally is conducted to the air, so that the heat is dissipated. The heat dissipation mode depends on the heat conduction performance of the stator shaft sleeve, the front end cover and other parts, and the working temperature of the motor cannot be well reduced for the motor with serious heat generation.
The water-cooled heat dissipation system has a good heat dissipation effect and is used for controlling the temperature of the motor and effectively solving the heat dissipation problem of the motor, so how to combine the water-cooled heat dissipation system with the outer rotor motor to obtain the water-cooled outer rotor motor with a proper internal structure, which is beneficial to the circulation flow of cooling water and the increase of cooling efficiency and has important significance to the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water-cooling type external rotor electric machine that cooling effect is good, solve the background art in the problem.
The utility model provides a technical scheme that its technical problem adopted is:
a water-cooled external rotor motor comprises a front end cover, a rear end cover, a middle shaft, a stator shaft sleeve, a stator and a rotor, wherein the stator shaft sleeve is sleeved outside the middle shaft, the stator shaft sleeve is sleeved outside the stator shaft sleeve, the rotor is sleeved outside the stator, the front end cover is provided with a water inlet nozzle and a water outlet nozzle, the stator shaft sleeve comprises a stator shaft sleeve shell and a stator shaft sleeve inner core, the stator shaft sleeve shell is sleeved outside the stator shaft sleeve inner core, the stator shaft sleeve shell is provided with a water inlet component and a water outlet component, the surface of the stator shaft sleeve inner core is provided with a spiral groove, two ends of the spiral groove are respectively connected with the water inlet component and the water outlet component, and a sealing element is arranged at the connection part of two ends of the stator shaft sleeve inner core and the stator shaft sleeve shell.
Preferably, the water inlet component comprises a water inlet, a water inlet flow channel and a water inlet groove which are connected, the water outlet component comprises a water outlet, a water outlet flow channel and a water outlet groove which are connected, the water inlet and the water outlet are arranged at the end part of the stator shaft sleeve shell, the water inlet flow channel and the water outlet flow channel are arranged in the wall of the stator shaft sleeve shell, and the water inlet groove and the water outlet groove are respectively arranged at two ends of the inner wall of the stator shaft sleeve shell.
Preferably, the water inlet groove is formed in one end, close to the rear end cover, of the inner wall of the stator shaft sleeve shell, and the water outlet groove is formed in one end, close to the front end cover, of the inner wall of the stator shaft sleeve shell.
Preferably, the sealing element is an O-ring seal.
Preferably, the surface of the stator shaft sleeve shell is provided with a plurality of limiting grooves along the circumferential direction of the surface of the stator shaft sleeve shell, the surface of the inner wall of the stator is provided with a plurality of limiting bosses matched with the limiting grooves, and the end part of the stator, which is adjacent to the rear end cover, is provided with a stator pressing plate for axially limiting the stator.
Preferably, the limiting grooves are V-shaped grooves which are uniformly distributed on the surface of the shell of the stator shaft sleeve, the limiting bosses are V-shaped bosses which are uniformly distributed on the surface of the inner wall of the stator, and the V-shaped bosses and the V-shaped grooves are in interference fit.
Preferably, the rotor is provided with a plurality of magnetic steel patches, gaps are formed between every two adjacent magnetic steel patches, the rear end cover is provided with a plurality of bosses in clearance fit with the magnetic steel patches, and the rear end cover is fixedly connected with the rotor through screws arranged in the circumferential direction of the end part of the rotor.
The utility model has the advantages that:
the water-cooling type external rotor motor of the utility model has the advantages that,
1. the utility model discloses a cooling water walks the heat that the motor produced, even if swift high-efficient environmental protection, can reduce motor operating temperature to a great extent, and it is long to improve motor duration, and through set up the spiral groove in stator axle sleeve inner core, has increased the length and the volume of water course, and cooperates the water course structure in the stator axle sleeve, is favorable to the circulation flow of cooling water, can not make the cooling water save in certain place of water course in the stator axle sleeve;
2. the sealing element at the end part of the inner core of the stator shaft sleeve increases the sealing property and the reliability of the whole water cooling structure;
3. the water channel is integrated in the stator shaft sleeve, is convenient to install by matching with a water nozzle of the front end cover, has no influence on the external structure of the stator shaft sleeve, and does not influence the overall structure of the motor;
4. the utility model discloses a spacing cooperation of stator axle sleeve and stator for stator stable in structure is reliable, avoids taking place the stator obscission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of the external structure of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the water inlet component of the present invention;
FIG. 4 is a schematic structural view of the water outlet member of the present invention;
fig. 5 is a schematic structural view of the stator pressing plate of the present invention;
FIG. 6 is a schematic cross-sectional view A-A of FIG. 5;
FIG. 7 is an enlarged view of a portion B of FIG. 6;
FIG. 8 is a schematic view of the boss structure of the present invention;
fig. 9 is a schematic cross-sectional view of C-C in fig. 8.
In the figure: 1. the water inlet structure comprises a front end cover, 2, a rear end cover, 3, a middle shaft, 4, a stator shaft sleeve, 5, a stator, 6, a rotor, 7, a water inlet nozzle, 8, a water outlet nozzle, 9, a stator shaft sleeve shell, 10, a stator shaft sleeve inner core, 11, screws, 21, a boss, 51, a limiting boss, 52, a stator pressing plate, 61, a magnetic steel patch, 91, a water inlet component, 92, a water outlet component, 93, a limiting groove, 101, a spiral groove, 102, a sealing element, 911, a water inlet, 912, a water inlet flow channel, 913, a water inlet groove, 921, a water outlet, 922, a water outlet flow channel, 923 and a water outlet groove.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings. It is to be understood that the practice of the present invention is not limited to the following examples, and that any modifications and/or changes in form made to the present invention are intended to fall within the scope of the present invention.
In the utility model, all parts and percentages are weight units, and the adopted equipment, raw materials and the like can be purchased from the market or commonly used in the field if not specified. The methods in the following examples are conventional in the art unless otherwise specified. The components or devices in the following examples are, unless otherwise specified, standard parts or parts known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through routine experimentation.
Example (b):
as shown in fig. 1 and 2, the water-cooled external rotor motor includes a front end cover 1, a rear end cover 2, a central shaft 3, a stator shaft sleeve 4, a stator 5 and a rotor 6, wherein the stator shaft sleeve is sleeved outside the central shaft, the stator is sleeved outside the stator shaft sleeve, and the rotor is sleeved outside the stator.
The front end cover is provided with a water inlet nozzle 7 and a water outlet nozzle 8, as shown in fig. 3 and fig. 4, the stator shaft sleeve comprises a stator shaft sleeve outer shell 9 and a stator shaft sleeve inner core 10, the stator shaft sleeve outer shell is sleeved outside the stator shaft sleeve inner core, the stator shaft sleeve outer shell is provided with a water inlet component 91 and a water outlet component 92, the surface of the stator shaft sleeve inner core is provided with a spiral groove 101, two ends of the spiral groove are respectively connected with the water inlet component and the water outlet component, the connecting part of two ends of the stator shaft sleeve inner core and the stator shaft sleeve outer shell is provided with a sealing element 102, and the sealing element is an O-shaped sealing ring.
The part of intaking includes water inlet 911, the runner of intaking 912 and the recess 913 of intaking that links to each other, goes out the water part including the delivery port 921 that links to each other, goes out water runner 922 and play water recess 923, and stator axle sleeve shell tip is all located to water inlet and delivery port, and the runner of intaking and play water runner are all located in the stator axle sleeve shell conch shell wall, and stator axle sleeve shell inner wall both ends are located respectively to the recess of intaking and play water recess. Specifically, the water inlet groove is formed in one end, close to the rear end cover, of the inner wall of the stator shaft sleeve shell, and the water outlet groove is formed in one end, close to the front end cover, of the inner wall of the stator shaft sleeve shell.
As shown in fig. 5-7, the surface of the stator sleeve shell is provided with 3 limiting grooves 93 along the circumferential direction of the surface of the stator sleeve shell, the limiting grooves are V-shaped grooves which are uniformly distributed on the surface of the stator sleeve shell, the surface of the inner wall of the stator is provided with 3 limiting bosses 51 matched with the limiting grooves, the limiting bosses are V-shaped bosses which are uniformly distributed on the surface of the inner wall of the stator, the V-shaped bosses and the V-shaped grooves are in interference fit, and the end part of the stator adjacent to the rear end cover is provided with a stator pressing plate 52 for axially limiting the stator.
As shown in fig. 8-9, the rotor is provided with 20 magnetic steel patches 61, a gap is formed between adjacent magnetic steel patches, the rear end cover is provided with 20 bosses 21 which are in clearance fit with the magnetic steel patches, the rear end cover is fixedly connected with the rotor through screws 11 arranged in the circumferential direction of the end part of the rotor, and the screws are countersunk screws.
The installation method of the water-cooling type outer rotor motor comprises the following steps: firstly, O-shaped sealing rings are arranged at two ends of an inner core of the stator shaft sleeve, and then the inner core of the stator shaft sleeve is arranged in a shell of the stator shaft sleeve in a press-fitting mode. Then the stator is installed in the stator shaft sleeve along the 3V-shaped grooves on the stator shaft sleeve, and a stator pressing plate is installed at the bottom of the stator and locked by screws. And then the middle shaft is arranged in the stator shaft sleeve, the front end cover is arranged on the stator shaft sleeve and locked by 4 screws, and the front end cover is provided with a water inlet nozzle and a water outlet nozzle to form a stator component. And connecting the rotor with the rear end cover through a countersunk head screw to form the rotor assembly. And finally, the stator assembly is completely arranged on the rotor assembly and is locked by a screw on an inner hole of the rear end cover to form the water-cooling type outer rotor motor.
When the outer rotor motor works normally, the interior of the coil gradually heats, heat is conducted to the stator shaft sleeve through the stator punching sheet group, then is conducted to the front end cover and the shaft, and finally is conducted to the air, so that the heat is dissipated. The heat dissipation mode depends on the heat conduction performance of the stator shaft sleeve, the front end cover and other parts, and the working temperature of the motor cannot be well reduced for the motor with serious heat generation. By adopting the cooling structure of the water-cooling type outer rotor motor, when the motor works, cooling water is injected through the water inlet nozzle, flows into the spiral groove through the water inlet component, then spirally rises to the water outlet component, and finally flows out through the water outlet nozzle. The cooling water continuously circulates, so that heat generated by the motor during operation can be continuously taken away by the cooling water. The cooling mode can take away a large amount of heat generated by the motor during working, thereby effectively reducing the working temperature of the motor.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (7)
1. The utility model provides a water-cooling type external rotor electric machine, includes front end housing, rear end cap, axis, stator axle sleeve, stator and rotor, and outside the axis was located to the stator axle sleeve cover, the stator axle sleeve was located outward, and outside the stator was located to the rotor cover, its characterized in that: the front end cover is provided with a water inlet nozzle and a water outlet nozzle, the stator shaft sleeve comprises a stator shaft sleeve shell and a stator shaft sleeve inner core, the stator shaft sleeve shell is sleeved outside the stator shaft sleeve inner core, the stator shaft sleeve shell is provided with a water inlet component and a water outlet component, the surface of the stator shaft sleeve inner core is provided with a spiral groove, two ends of the spiral groove are respectively connected with the water inlet component and the water outlet component, and a sealing element is arranged at the connecting part of the two ends of the stator shaft sleeve inner core and the stator shaft sleeve shell.
2. The water-cooled external rotor electric machine according to claim 1, characterized in that: the water inlet component comprises a water inlet, a water inlet flow channel and a water inlet groove which are connected, the water outlet component comprises a water outlet, a water outlet flow channel and a water outlet groove which are connected, the water inlet and the water outlet are arranged at the end part of the stator shaft sleeve shell, the water inlet flow channel and the water outlet flow channel are arranged in the wall of the stator shaft sleeve shell, and the water inlet groove and the water outlet groove are respectively arranged at two ends of the inner wall of the stator shaft sleeve shell.
3. The water-cooled external rotor electric machine according to claim 2, characterized in that: the water inlet groove is formed in one end, close to the rear end cover, of the inner wall of the stator shaft sleeve shell, and the water outlet groove is formed in one end, close to the front end cover, of the inner wall of the stator shaft sleeve shell.
4. The water-cooled external rotor electric machine according to claim 1, characterized in that: the sealing element is an O-shaped sealing ring.
5. The water-cooled external rotor electric machine according to claim 1, characterized in that: the stator shaft sleeve shell surface is equipped with a plurality of spacing recesses along stator shaft sleeve shell surface circumferencial direction, stator inner wall surface is equipped with a plurality of spacing bosss with spacing recess complex, and the tip that the stator is close to the rear end cap is equipped with and is used for the spacing stator clamp plate of stator axial.
6. The water-cooled external rotor electric machine according to claim 5, characterized in that: the limiting groove is a V-shaped groove, the V-shaped groove is uniformly distributed on the surface of the shell of the stator shaft sleeve, the limiting boss is a V-shaped boss, the V-shaped boss is uniformly distributed on the surface of the inner wall of the stator, and the V-shaped boss and the V-shaped groove are in interference fit.
7. The water-cooled external rotor electric machine according to claim 1, characterized in that: the rotor is provided with a plurality of magnetic steel patches, gaps are formed between every two adjacent magnetic steel patches, the rear end cover is provided with a plurality of bosses in clearance fit with the magnetic steel patches, and the rear end cover is fixedly connected with the rotor through screws arranged in the circumferential direction of the end part of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023335824.4U CN213906499U (en) | 2020-12-30 | 2020-12-30 | Water-cooling type external rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023335824.4U CN213906499U (en) | 2020-12-30 | 2020-12-30 | Water-cooling type external rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213906499U true CN213906499U (en) | 2021-08-06 |
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ID=77107142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023335824.4U Active CN213906499U (en) | 2020-12-30 | 2020-12-30 | Water-cooling type external rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213906499U (en) |
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2020
- 2020-12-30 CN CN202023335824.4U patent/CN213906499U/en active Active
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