Rotor cooling device with preheating recovery function

Abstract

The utility model discloses a rotor cooling device with a preheating recovery function in the technical field of motor equipment, which comprises a rotating shaft and a protective shell, a motor rotor wrapping the rotating shaft is arranged in the protective shell, a motor stator is wrapped on the outer ring of the motor rotor, and the motor stator is connected with the rotating shaft. The motor rotor is internally provided with multiple sets of heat dissipation grooves circumferentially arranged around the central axis of the motor rotor at equal intervals, a heat dissipation fan is installed at the position, located at the rear end of the motor rotor, of the surface of the rotating shaft, a heat collection box buckled at the front end of the motor rotor is installed at the front end of the inner wall of the protective shell, and a heat exchange box is installed at the bottom of the protective shell. According to the motor rotor, the problems that when an existing motor rotor runs, the heat dissipation efficiency is low, the motor is prone to being overheated, in the cooling process of the motor rotor, the heat dissipation efficiency of the motor rotor is low, and the heat dissipation efficiency of the motor rotor is high are solved. And waste heat cannot be recycled, and energy conservation and environmental protection are not facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a rotor cooling device with a preheating recovery function. Background Art

[0002] With the rapid development of the world, heavy industry is also developing towards high speed, high efficiency, low energy consumption and high automation. Among them, the technical improvement and structural innovation of high-speed motors are becoming more and more urgent. Since high-speed permanent magnet motors have high heat power, it is easy to cause the stator and rotor temperature to be too high, thus affecting the motor efficiency and may even cause the motor to be scrapped. Therefore, the cooling direction of the motor rotor has become an important research target in the development of motor technology.

[0003] The existing motor rotor has a low heat dissipation efficiency during operation, and the motor is prone to overheating. In addition, during the cooling process of the motor rotor, the waste heat cannot be recovered and utilized, which is not conducive to energy saving and environmental protection. Therefore, technical personnel in this field provide a rotor cooling device with a preheating recovery function to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a rotor cooling device with a preheating recovery function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotor cooling device with a preheating recovery function, comprising a rotating shaft and a protective shell, wherein a motor rotor wrapping the rotating shaft is arranged inside the protective shell, the outer ring of the motor rotor wraps the motor stator, and the inside of the motor rotor is provided with a plurality of heat dissipation grooves arranged equidistantly around the central axis of the motor, a heat dissipation fan is installed at the rear end of the motor rotor on the surface of the rotating shaft, and a heat collecting box buckled at the front end of the motor rotor is installed at the front end of the inner wall of the protective shell;

[0006] A heat exchange box is installed at the bottom of the protective shell, and the outer circle of the heat collecting box is connected with a heat exchange pipe that runs through the heat exchange box.

[0007] Preferably, an I-shaped heat-conducting rod is installed inside each group of the heat dissipation slots, and a plurality of groups of heat-conducting holes are provided in the flange plate of the I-shaped heat-conducting rod.

[0008] Preferably, the top end of the I-shaped heat-conducting rod extends to the interior of the heat collecting box, and the front ends of the plurality of groups of heat-conducting rods are fixedly connected via a support ring.

[0009] Preferably, the outer ring of the heat collecting box is connected with two groups of heat exchange tubes, and the connecting sections of the heat exchange tubes located inside the heat exchange box are in the shape of a U-shaped bent tube.

[0010] Preferably, the bottom end of one side of the heat exchange box is connected to a liquid inlet, and the bottom end of the other side of the heat exchange box is connected to a liquid outlet.

[0011] Preferably, a support frame is welded to the bottom of the heat exchange box.

[0012] Preferably, a plurality of heat dissipation holes are provided at the rear end of the protective shell.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the rotation of the rotating shaft and the motor rotor can drive the cooling fan to rotate together. The heat emitted by the motor rotor during operation is gathered inside the heat dissipation groove. The cooling fan can blow the heat emitted by the motor rotor to the inside of the heat collecting box and then send it out through the heat exchange pipe. The remaining heat is dissipated through the heat dissipation holes, which can improve the heat dissipation efficiency of the motor rotor.

[0015] 2. In the utility model, the front end of the motor rotor rotates inside the heat collecting box, and the heat inside the heat collecting box can be discharged after heat exchange inside the heat exchange box through the heat exchange tube. The heat generated by the motor rotor during operation can be recycled, and the heat exchange box can also provide good heat dissipation and cooling effect for the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the protective shell of the utility model;

[0018] Figure 3 This is a first cross-sectional view of the protective shell and the heat exchange box of the utility model;

[0019] Figure 4 This is a second cross-sectional view of the protective shell and the heat exchange box of the utility model;

[0020] Figure 5 It is a schematic diagram of the heat-conducting rod structure of the utility model.

[0021] In the figure: 1. rotating shaft; 2. protective shell; 3. motor rotor; 4. motor stator; 5. heat dissipation slot; 6. cooling fan; 7. heat collecting box; 8. heat exchange box; 9. heat exchange tube; 10. heat conducting rod; 11. heat conducting hole; 12. support ring; 13. liquid inlet end; 14. liquid outlet end; 15. support frame; 16. heat dissipation hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 to Figure 5 In an embodiment of the utility model, a rotor cooling device with a preheating and recovery function comprises a rotating shaft 1 and a protective shell 2, a motor rotor 3 wrapping the rotating shaft 1 is arranged inside the protective shell 2, a motor stator 4 is wrapped around the outer ring of the motor rotor 3, a plurality of heat dissipation grooves 5 equidistantly arranged in a circle around the central axis are provided inside the motor rotor 3, a heat dissipation fan 6 is installed at the rear end of the motor rotor 3 on the surface of the rotating shaft 1, a heat collecting box 7 buckled at the front end of the motor rotor 3 is installed at the front end of the inner wall of the protective shell 2, a heat exchange box 8 is installed at the bottom of the protective shell 2, and a heat exchange pipe 9 penetrating the heat exchange box 8 is connected to the outer ring of the heat collecting box 7.

[0024] When in use, the rotation of the rotating shaft 1 and the motor rotor 3 can drive the cooling fan 6 to rotate together. The front end of the motor rotor 3 rotates inside the heat collecting box 7. The heat emitted by the motor rotor 3 during operation is gathered into the heat dissipation slot 5. The cooling fan 6 can blow the heat emitted by the motor rotor 3 to the inside of the heat collecting box 7. The heat inside the heat collecting box 7 can be discharged after heat exchange in the heat exchange box 8 through the heat exchange tube 9. The heat generated by the motor rotor 3 during operation can be recovered. The inside of the heat exchange box 8 can be filled with cooling water or cooling oil, etc., which can exchange heat and cool the heat exchange tube 9, and the heat exchange box 8 can provide good heat dissipation and cooling effect for the motor.

[0025] In one embodiment, specifically, an I-shaped heat-conducting rod 10 is installed inside each group of heat dissipation grooves 5. The heat-conducting rod 10 can accelerate the heat dissipation of the motor rotor 3. A plurality of heat-conducting holes 11 are provided in the flange plate of the I-shaped heat-conducting rod 10, which can accelerate the dissipation of heat of the motor rotor 3. Furthermore, the top end of the I-shaped heat-conducting rod 10 extends to the inside of the thermal collecting box 7. The front ends of the plurality of groups of heat-conducting rods 10 are fixedly connected by a support ring 12, which can enhance the stability of the support of the plurality of groups of heat-conducting rods 10. The heat-conducting rod 10 extends to the inside of the thermal collecting box 7, which can accelerate the conduction of heat to the inside of the thermal collecting box 7.

[0026] In one embodiment, specifically, the outer circle of the heat collecting box 7 is connected with two groups of heat exchange tubes 9, and the connecting section of the heat exchange tubes 9 located inside the heat exchange box 8 is in a U-shaped curved tube shape, which can improve the heat exchange efficiency of the heat exchange tubes 9, and the bottom end of one side of the heat exchange box 8 is connected with a liquid inlet end 13, and the bottom end of the other side of the heat exchange box 8 is connected with a liquid outlet end 14. Both the liquid inlet end 13 and the liquid outlet end 14 can be used to connect to the pump body to promote the flow of liquid inside the heat exchange box 8, thereby improving the heat exchange and cooling efficiency of the heat exchange box 8.

[0027] In one embodiment, specifically, a support frame 15 is welded to the bottom of the heat exchange box 8 to facilitate the installation and fixation of the motor, and a plurality of heat dissipation holes 16 are provided at the rear end of the protective shell 2 to accelerate the heat dissipation inside the protective shell 2.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotor cooling device with a preheating recovery function, comprising a rotating shaft (1) and a protective shell (2), wherein a motor rotor (3) wrapping the rotating shaft (1) is arranged inside the protective shell (2), and the outer ring of the motor rotor (3) is wrapped with a motor stator (4), characterized in that: The motor rotor (3) is provided with a plurality of heat dissipation grooves (5) arranged equidistantly in a circumference around its axis, a heat dissipation fan (6) is installed on the surface of the rotating shaft (1) at the rear end of the motor rotor (3), and a heat collecting box (7) is installed at the front end of the inner wall of the protective shell (2) and is buckled at the front end of the motor rotor (3); A heat exchange box (8) is installed at the bottom of the protective shell (2), and the outer ring of the heat collection box (7) is connected to a heat exchange pipe (9) that runs through the heat exchange box (8).

2. The rotor cooling device with preheating recovery function according to claim 1 is characterized in that: An I-shaped heat-conducting rod (10) is installed inside each group of the heat dissipation grooves (5), and a plurality of groups of heat-conducting holes (11) are provided in the flange plate of the I-shaped heat-conducting rod (10).

3. The rotor cooling device with preheating recovery function according to claim 2 is characterized in that: The top end of the I-shaped heat-conducting rod (10) extends to the interior of the heat collecting box (7), and the front ends of multiple groups of heat-conducting rods (10) are fixedly connected via a support ring (12).

4. The rotor cooling device with preheating recovery function according to claim 1 is characterized in that: The outer ring of the heat collection box (7) is connected to two groups of heat exchange tubes (9), and the connecting section of the heat exchange tubes (9) located inside the heat exchange box (8) is in the shape of a U-shaped bent tube.

5. The rotor cooling device with preheating recovery function according to claim 4 is characterized in that: The bottom end of one side of the heat exchange box (8) is connected to a liquid inlet (13), and the bottom end of the other side of the heat exchange box (8) is connected to a liquid outlet (14).

6. The rotor cooling device with preheating recovery function according to claim 1 is characterized in that: A support frame (15) is welded to the bottom of the heat exchange box (8).

7. The rotor cooling device with preheating recovery function according to claim 1 is characterized in that: The rear end of the protective shell (2) is provided with a plurality of heat dissipation holes (16).

Images