Motor with independent circulation cooling of stator and rotor

Abstract

The utility model discloses a kind of motor of stator and rotor independent circulation cooling, including shell, stator and rotor are equipped in the shell, further include: two isolation rings, it is respectively located at the stator both sides of motor body, the isolation ring both ends are connected with the stator and shell respectively, to the stator cooling cavity and stator cooling cavity that the shell inside is separated into independent each other;First liquid inlet and first liquid outlet that are communicated with the stator cooling cavity are equipped on the shell, and second liquid inlet and second liquid outlet that are communicated with the stator cooling cavity;Multiple cooling liquid passages are equipped on the stator;Rotor end plate is equipped at the both ends of the rotor.The utility model provides a kind of motor of stator and rotor independent circulation cooling, by directly immersing liquid cooling motor stator and rotor, improve motor rotor heat dissipation efficiency, solve the problem that high power density motor is difficult to radiate heat, improve motor power density index.

Description

Technical Field

[0001] This utility model relates to the field of motor heat dissipation. More specifically, this utility model relates to a motor with independent stator and rotor cooling circulation. Background Technology

[0002] With the development of technology, the requirements for motor speed are constantly increasing. As motor speed increases, the heat generated during operation also increases. Prolonged operation under these conditions can reduce motor efficiency and, in severe cases, burn out the motor. Most existing technologies provide independent cooling for the motor stator, offering comprehensive heat dissipation solutions. While various cooling methods exist for the motor rotor, they suffer from low cooling efficiency and the presence of heat dissipation dead zones. For example, utility model patent application number 202211343204.6 discloses a liquid-immersed directional cooling motor that isolates the stator for better heat dissipation; however, heat accumulation in the rotor still hinders the improvement of motor power density. Utility Model Content

[0003] The purpose of this invention is to provide a motor with independent circulating cooling for both the stator and rotor. By directly immersing the motor stator and rotor in liquid for cooling, the heat dissipation efficiency of the motor rotor is improved, solving the problem of heat dissipation difficulties in high power density motors and improving the power density index of the motor.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A motor with independent circulating cooling of stator and rotor, including a housing, wherein a stator and a rotor are disposed inside the housing, and further comprising:

[0005] Two isolation rings are located on both sides of the stator of the motor body, and the two ends of the isolation rings are connected to the stator and the housing respectively, so as to divide the interior of the housing into independent rotor cooling chambers and stator cooling chambers.

[0006] The housing is provided with a first liquid inlet and a first liquid outlet communicating with the rotor cooling chamber, and a second liquid inlet and a second liquid outlet communicating with the stator cooling chamber;

[0007] The stator is provided with multiple coolant channels;

[0008] The rotor has rotor end plates at both ends.

[0009] Furthermore, in the aforementioned motor with independent stator and rotor cooling, the isolation ring is cylindrical, coaxially arranged with the rotor, and its inner diameter is equal to that of the stator.

[0010] Furthermore, in the aforementioned motor with independent circulating cooling of the stator and rotor, the first liquid inlet and the first liquid outlet are respectively located at the front and rear ends of the housing.

[0011] Furthermore, in the aforementioned motor with independent circulating cooling of the stator and rotor, both the second liquid inlet and the second liquid outlet are located on the side wall of the housing.

[0012] Furthermore, in the aforementioned motor with independent stator and rotor cooling, the coolant channels are arranged parallel to the axis of the rotor, and multiple coolant channels are distributed along the circumference of the rotor.

[0013] Furthermore, in the aforementioned motor with independent stator and rotor cooling, the rotor end plate is a ring, which is coaxially sleeved on the rotor.

[0014] Furthermore, the aforementioned motor with independent stator and rotor cooling also includes:

[0015] The circulating cooling device has its inlet connected to the first outlet and the second outlet, and its outlet connected to the first inlet and the second inlet, respectively, to deliver coolant into the rotor cooling chamber and the stator cooling chamber, and to extract and cool the coolant in the rotor cooling chamber and the stator cooling chamber.

[0016] Furthermore, in the aforementioned motor with independent stator and rotor circulating cooling, the circulating cooling device includes:

[0017] The cooling pipes have inlets connected to the first liquid outlet and the second liquid outlet, and outlets connected to the first liquid inlet and the second liquid inlet, respectively.

[0018] The cooling pipeline is equipped with a heat exchanger, a replenishment tank, and a circulation pump in sequence from its inlet to its outlet.

[0019] Furthermore, in the aforementioned motor with independent stator and rotor circulating cooling, the circulating cooling device further includes:

[0020] A filter device is installed on the cooling line and located between the circulation pump and the outlet of the cooling line.

[0021] The beneficial effects of this utility model are:

[0022] 1. In the motor of this utility model, the rotor is directly cooled, which greatly improves the heat dissipation efficiency of the motor, solves the problem of heat dissipation difficulty in high power density motors, and improves the power density index of the motor.

[0023] 2. In the motor of this utility model, the coolant can directly dissipate heat from the bearing between the rotor and the housing, thus extending the service life of the bearing.

[0024] 3. The overall heat dissipation structure of this utility model is simple, without complex cooling channel design, which reduces design difficulty and processing cost.

[0025] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the motor described in this utility model;

[0027] Figure 2 This is a schematic diagram of the rotor described in this utility model. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Figure 1 A stator-rotor independently circulating cooling motor provided in this embodiment of the utility model includes a housing, wherein a stator 1 and a rotor 2 are disposed within the housing, and further includes:

[0031] Two isolation rings 3 are located on both sides of the stator 1 of the motor body, and the two ends of the isolation rings 3 are connected to the stator and the housing respectively, so as to divide the inside of the housing into independent rotor cooling chamber and stator cooling chamber.

[0032] The housing is provided with a first liquid inlet and a first liquid outlet communicating with the rotor cooling chamber, and a second liquid inlet and a second liquid outlet communicating with the stator cooling chamber; the first liquid inlet and the first liquid outlet are respectively located at the front and rear ends of the housing; the second liquid inlet and the second liquid outlet are both located on the side wall of the housing.

[0033] The stator 1 is provided with multiple coolant channels 4;

[0034] The rotor 2 has rotor end plates at both ends. The rotor end plates are circular rings and are coaxially sleeved on the rotor 2.

[0035] In this embodiment, the casing structure adopts existing technology, such as... Figure 1The housing includes an outer shell 11, a front cover 12, and a rear cover 13. The stator 1 is housed within the outer shell 11, and the rotor 2 coaxially passes through the stator 1. The two ends of the rotor 2 shaft are rotatably connected to the front cover 12 and the rear cover 13 via bearings 14, respectively. Simultaneously, two isolation rings 3 are provided within the housing, connected to the stator 1, thus dividing the interior of the housing into independent rotor cooling chambers and stator cooling chambers. The rotor 2 is located in the rotor cooling chamber, and rotor end plates are provided at both ends of the rotor 2, sealing off the ends of the rotor 2 windings to prevent contact between the rotor 2 windings and the coolant in the rotor cooling chamber. The areas on both sides of the rotor 2 in the rotor cooling chamber are connected through the gap between the rotor 2 and the stator 1. The stator 1 is located in the stator cooling chamber, and the areas on both sides of the stator 1 in the stator cooling chamber are connected through multiple coolant channels 4 on the stator 1. When the motor is operating, coolant is supplied to the rotor cooling chamber and stator cooling chamber through the first and second inlets, respectively, while the coolant is discharged from the rotor and stator cooling chambers through the first and second outlets. This flow of coolant within the rotor and stator cooling chambers allows heat to be carried away, thus dissipating heat from the rotor 2 and stator 1. It also dissipates heat from the bearing 14 between the rotor 2 and the housing.

[0036] Preferably, in another embodiment of the present invention, the isolation ring 3 is cylindrical, coaxially arranged with the rotor 2, and its inner diameter is equal to that of the stator 1.

[0037] In this embodiment, the inner diameter of the isolation ring 3 is equal to the inner diameter of the stator 1, so that the inner side of the isolation ring 3 is flush with the inner side of the stator 1, which facilitates the stable movement of the coolant in the stator cooling cavity.

[0038] Preferably, as another embodiment of this utility model, such as Figure 2 As shown, the coolant channel 4 is arranged parallel to the axis of the rotor 2, and multiple coolant channels 4 are distributed along the circumference of the rotor 2.

[0039] In this embodiment, the multiple coolant channels 4 are distributed circumferentially along the rotor 2, so that the flow of coolant between the regions on both sides of the stator 1 in the stator cooling cavity is more uniform, thus avoiding its impact on the rotation of the rotor 2.

[0040] Preferably, as another embodiment of the present invention, it further includes:

[0041] A circulating cooling device has its inlet connected to the first outlet and the second outlet, and its outlet connected to both the first inlet and the second inlet, to supply coolant to the rotor cooling chamber and the stator cooling chamber, and to extract and cool the coolant from the rotor cooling chamber and the stator cooling chamber. Specifically, the circulating cooling device includes:

[0042] The cooling pipe 6 has its inlet connected to the first liquid outlet and the second liquid outlet respectively, and its outlet connected to the first liquid inlet and the second liquid inlet respectively.

[0043] The cooling pipe 6 is provided with a heat exchanger 7, a coolant reservoir 8, and a circulation pump 9 in sequence from its inlet to its outlet. The coolant reservoir 8 is provided with a coolant inlet and a sealing cap. The sealing cap is normally closed. When coolant needs to be added, the sealing cap is opened and the casing is opened.

[0044] In this embodiment, such as Figure 1 As shown, when the motor is working, the circulating pump 9 serves as the power source, driving the coolant to move from its inlet to its outlet. The coolant in the stator cooling chamber and the high-temperature coolant in the rotor cooling chamber converge at the inlet of the cooling pipe 6 and flow through the heat exchanger 7, where heat is carried away to achieve cooling. The cooled coolant then enters the first and second inlets from the outlet, entering both the coolant and rotor cooling chambers. This creates two independent cooling loops in the stator and rotor cooling chambers, respectively dissipating heat and cooling the stator 1 and rotor 2.

[0045] Preferably, in another embodiment of the present invention, the circulating cooling device further includes:

[0046] A filter device 10 is disposed on the cooling pipe 6 and located between the circulating pump 9 and the outlet of the cooling pipe 6.

[0047] In this embodiment, since some impurities may be generated during the circulation of coolant, a filter device 10 is installed on the cooling pipe 6 to filter the coolant.

[0048] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. A motor with independent stator and rotor cooling, comprising a housing, wherein a stator and a rotor are disposed within the housing, characterized in that, Also includes: Two isolation rings are located on both sides of the stator of the motor body, and the two ends of the isolation rings are connected to the stator and the housing respectively, so as to divide the interior of the housing into independent rotor cooling chambers and stator cooling chambers. The housing is provided with a first liquid inlet and a first liquid outlet communicating with the rotor cooling chamber, and a second liquid inlet and a second liquid outlet communicating with the stator cooling chamber; The stator is provided with multiple coolant channels; The rotor has rotor end plates at both ends.

2. The motor with independent stator and rotor cooling as described in claim 1, characterized in that, The isolation ring is cylindrical and is coaxially arranged with the rotor, and its inner diameter is equal to that of the stator.

3. The motor with independent stator and rotor cooling as described in claim 1, characterized in that, The first liquid inlet and the first liquid outlet are respectively located at the front and rear ends of the housing.

4. A motor with independent stator and rotor cooling as described in claim 3, characterized in that, The second liquid inlet and the second liquid outlet are both located on the side wall of the housing.

5. A motor with independent stator and rotor cooling as described in claim 1, characterized in that, The coolant channels are arranged parallel to the axis of the rotor, and multiple coolant channels are distributed along the circumference of the rotor.

6. A motor with independent stator and rotor cooling as described in claim 1, characterized in that, The rotor end plate is a ring, which is coaxially sleeved on the rotor.

7. A motor with independent stator and rotor cooling as described in any one of claims 1-6, characterized in that, Also includes: The circulating cooling device has its inlet connected to the first outlet and the second outlet, and its outlet connected to the first inlet and the second inlet, respectively, to deliver coolant into the rotor cooling chamber and the stator cooling chamber, and to extract and cool the coolant in the rotor cooling chamber and the stator cooling chamber.

8. A motor with independent stator and rotor cooling as described in claim 7, characterized in that, The circulating cooling device includes: The cooling pipes have inlets connected to the first liquid outlet and the second liquid outlet, and outlets connected to the first liquid inlet and the second liquid inlet, respectively. The cooling pipeline is equipped with a heat exchanger, a replenishment tank, and a circulation pump in sequence from its inlet to its outlet.

9. A motor with independent stator and rotor cooling as described in claim 8, characterized in that, The circulating cooling device also includes: A filter device is installed on the cooling line and located between the circulation pump and the outlet of the cooling line.

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