Motor cooling device

Abstract

The utility model discloses a motor cooling device, which comprises a protective shell, an air inlet pipe, a heat exchanger, a fan, an air outlet pipe, a collecting pipe and a distributing pipe, the motor body is arranged in the protective shell, the collecting pipe is arranged on the upper portion of the outer side of the protective shell, the distributing pipe is arranged on the lower portion of the outer side of the protective shell, and openings of the collecting pipe and the distributing pipe are both communicated with the interior of the protective shell. The collecting pipe is connected with the heat exchanger through an air inlet pipe, the distributing pipe is connected with the heat exchanger through an air outlet pipe, and a fan is arranged on the air outlet pipe; the fan is used for conveying hot air in the protective shell into the heat exchanger through the collecting pipe and the air inlet pipe for cooling and heat exchange, and cooled cold air circulates to the protective shell through the air outlet pipe and the distribution pipe so as to be used for cooling the motor body. The utility model has the characteristics of compact structure, simple operation, high cooling efficiency and the like, and improves the stability and reliability of motor operation.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor cooling device. Background Technology

[0002] Electric motors (hereinafter referred to as motors) are widely used in a variety of applications. During continuous operation, the motor temperature rises steadily. If not effectively cooled, this high temperature will severely affect the motor's safe and stable operation, and may even cause accidents such as motor burnout or fire. Therefore, motors are typically equipped with cooling devices, the most common being cooling fans, which achieve cooling through heat exchange between the air and the motor body. However, after prolonged use, especially in harsh working environments such as dusty or corrosive conditions, a thick layer of debris accumulates on the motor casing, significantly reducing heat dissipation and causing the motor temperature to remain consistently high. Furthermore, traditional cooling methods often fail to adequately cool the front end and bearings.

[0003] Existing technology CN119010452A discloses a method that automatically introduces external air into the mounting base to dissipate heat from the motor using an arc-shaped guide plate around the motor; however, this technical solution cannot avoid the problem of dust accumulation and corrosion on the motor casing. Existing technology CN222192012 uses a cooling base and a cooling sleeve covering the outside of the motor for cooling. However, the cooling sleeve in this solution gradually shifts or even falls off due to the vibration of the motor itself. Furthermore, motor casings come in various shapes, making it difficult for the cooling sleeve to meet the needs of motors with diverse designs. Full coverage of the motor is challenging, and removing the cooling sleeve during later maintenance and inspection increases the workload. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a motor cooling device that is compact in structure, easy to operate, and highly stable.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A motor cooling device includes: a protective shell, an air inlet pipe, a heat exchanger, a fan, an air outlet pipe, a collecting pipe, and a distribution pipe; the motor body is disposed inside the protective shell, the collecting pipe is disposed on the upper part of the outer side of the protective shell, and the distribution pipe is disposed on the lower part of the outer side of the protective shell, the openings of the collecting pipe and the distribution pipe are both in communication with the interior of the protective shell; the collecting pipe is connected to the heat exchanger through the air inlet pipe, the distribution pipe is connected to the heat exchanger through the air outlet pipe, and a fan is provided on the air outlet pipe; the fan is used to transport hot air inside the protective shell to the heat exchanger for cooling and heat exchange through the collecting pipe and the air inlet pipe, and the cooled air is circulated back to the protective shell through the air outlet pipe and the distribution pipe to cool the motor body.

[0007] As a further improvement of this utility model, the heat exchanger is a plate heat exchanger.

[0008] As a further improvement of this utility model, the heat exchanger includes an inlet pipe and an outlet pipe, the inlet pipe is provided with an inlet solenoid valve, and the outlet pipe is provided with an outlet solenoid valve.

[0009] As a further improvement of this utility model, the motor cooling device also includes a DCS controller, and both the inlet solenoid valve and the outlet solenoid valve are connected to the DCS controller.

[0010] As a further improvement of this utility model, the protective shell is equipped with a motor body temperature sensor, a front bearing temperature sensor and a rear bearing temperature sensor, and the motor body temperature sensor, the front bearing temperature sensor and the rear bearing temperature sensor are all connected to the DCS controller to monitor the temperature of the motor body and the bearing and transmit the temperature data information to the DCS controller.

[0011] As a further improvement of this utility model, an airflow temperature sensor is also provided inside the protective shell near the manifold. The airflow temperature sensor is connected to the DCS controller to monitor the airflow temperature inside the protective shell and transmit the temperature data information to the DCS controller.

[0012] As a further improvement of this utility model, a water temperature sensor is provided on the water inlet pipe. The water temperature sensor is connected to the DCS controller to monitor the inlet water temperature of the heat exchanger and transmit the temperature data information to the DCS controller.

[0013] As a further improvement of this utility model, the fan is an axial flow fan.

[0014] As a further improvement of this utility model, the opening of the collecting pipe has a structure that is narrow in the middle and wide at both ends.

[0015] As a further improvement of this utility model, the opening of the distribution pipe is narrow in the middle and wide at both ends.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This utility model's motor cooling device, by setting up a protective shell, allows the motor body to be placed inside the protective shell, thus isolating the motor's operating environment from the external environment and forming an independent operating environment for the motor. At the same time, a fan, air duct, and heat exchanger are set on the outside of the protective shell, allowing the gas inside the protective shell to be used as a heat exchange medium and circulated, thereby achieving cooling of the motor. On the one hand, the cooling effect of the motor body is not affected by the external environment; on the other hand, because the gas inside the protective shell is circulated, dust and dirt will not form during long-term continuous operation, effectively preventing the motor body from being corroded and extending the motor's service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the structural principle of the motor cooling device in a specific embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structural principle of the motor cooling device from another perspective in a specific embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structural principle of the manifold in a specific embodiment of this utility model;

[0021] Figure 4 This is a temperature control diagram of the motor cooling device in a specific embodiment of this utility model;

[0022] Legend: 1. Protective shell; 2. Air inlet pipe; 3. Heat exchanger; 4. Fan; 5. Air outlet pipe; 6. Inlet solenoid valve; 7. Water inlet pipe; 8. Outlet solenoid valve; 9. Water outlet pipe; 10. Coupling; 11. Fan / pump body; 12. Manifold; 13. Distribution pipe; 14. Motor body; 15. Bearing; 16. Motor body temperature sensor; 17. Front bearing temperature sensor; 18. Rear bearing temperature sensor; 19. Airflow temperature sensor; 20. Water temperature sensor; 21. DCS controller. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0024] In the description of this utility model, it should be understood that the terms "side", "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Example

[0027] like Figure 1 and Figure 2 As shown, the motor cooling device of this utility model includes: a protective shell 1, an air inlet pipe 2, a heat exchanger 3, a fan 4, an air outlet pipe 5, a collecting pipe 12, and a distribution pipe 13. The motor body 14 is housed inside the protective shell 1, and the bearing 15 of the motor body 14 extends to the outside of the protective shell 1 and is connected to the fan / pump body 11 via a coupling 10. The protective shell 1 encloses the motor body 14, forming a relatively enclosed space. The collecting pipe 12 is located on the upper outer side of the protective shell 1 and is used to collect hot airflow. The distribution pipe 13 is located on the lower outer side of the protective shell 1 and is used to distribute airflow. The openings of both the collecting pipe 12 and the distribution pipe 13 communicate with the interior of the protective shell 1 to allow gas to enter and exit the protective shell 1. The collecting pipe 12 is connected to the heat exchanger 3 via the air inlet pipe 2, and the distribution pipe 13 is connected to the heat exchanger 3 via the air outlet pipe 5, on which the fan 4 is mounted. The fan 4 is used to transport the hot air inside the protective shell 1 to the heat exchanger 3 through the collecting pipe 12 and the air inlet pipe 2 for cooling and heat exchange. The cooled air is circulated back to the protective shell 1 through the air outlet pipe 5 and the distribution pipe 13 to cool the motor body 14.

[0028] In this embodiment, the fan 4 is an axial flow fan, used to provide a certain air pressure to force the airflow inside the protective shell 1 to circulate. The power of the fan 4 does not need to be too high; a small axial flow fan, such as a 55W fan, is sufficient.

[0029] In this embodiment, by setting a protective shell 1, the motor body 14 can be placed inside the protective shell 1, thus isolating the motor's operating environment from the external environment and forming an independent operating environment for the motor. At the same time, a fan 4, air duct, and heat exchanger 3 are set on the outside of the protective shell 1, allowing the gas inside the protective shell 1 to be used as a heat exchange medium and circulated, thereby cooling the motor. On the one hand, the cooling effect of the motor body 14 is not affected by the external environment; on the other hand, because the gas inside the protective shell 1 is circulated, dust and dirt will not form during long-term continuous operation, effectively preventing corrosion of the motor body 1.

[0030] In this embodiment, the heat exchanger 3 is a plate heat exchanger. The specific structure of the plate heat exchanger adopts conventional settings in the art and will not be described in detail here. The heat exchanger 3 includes an inlet pipe 7 and an outlet pipe 9 to realize the entry and exit of cooling water in the heat exchanger 3. An inlet solenoid valve 6 is provided on the inlet pipe 7, and an outlet solenoid valve 8 is provided on the outlet pipe 9. The hot gas in the protective shell 1 flows into the plate heat exchanger, and the cooling water exchanges heat with the hot gas flow to achieve a cooling effect. The cooled gas then enters the protective shell 1 to cool the motor body 14.

[0031] In this embodiment, the motor cooling device also includes a DCS controller 21. The DCS controller 21 monitors the cooling status of the motor body 14 in real time and controls the operation of the heat exchanger 3 and the fan 4 to improve the cooling effect of the motor body 14. In this embodiment, both the inlet solenoid valve 6 and the outlet solenoid valve 8 are connected to the DCS controller 21. The DCS controller 21 controls the opening degree of the inlet solenoid valve 6 and the outlet solenoid valve 8 to precisely control the operation of the heat exchanger 3.

[0032] like Figure 4 As shown, in this embodiment, a motor body temperature sensor 16, a front bearing temperature sensor 17, and a rear bearing temperature sensor 18 are provided inside the protective housing 1, and all three are connected to the DCS controller 21. The motor body temperature sensor 16 monitors the temperature of the motor body 14 in real time, while the front and rear bearing temperature sensors 17 and 18 monitor the temperatures at both ends of the bearing 15 in real time. All three sensors transmit temperature data to the DCS controller 21, allowing the DCS controller 21 to accurately monitor the motor's cooling status.

[0033] like Figure 4 As shown, in this embodiment, an airflow temperature sensor 19 is also provided inside the protective shell 1 near the manifold 12. The airflow temperature sensor 19 is connected to the DCS controller 21 to monitor the airflow temperature inside the protective shell 1 and transmit the temperature data information to the DCS controller 21.

[0034] like Figure 4 As shown, in this embodiment, a water temperature sensor 20 is provided on the water inlet pipe 7. The water temperature sensor 20 is connected to the DCS controller 21 to monitor the water inlet temperature of the heat exchanger 3 and transmit the temperature data information to the DCS controller 21.

[0035] In this embodiment, in order to achieve controllable temperature of the motor body 14, temperature sensors are used to measure the temperature of the motor body 14, bearing 15, airflow around the motor body 14 and water inlet of heat exchanger 3 respectively. Then, the opening of the water inlet and outlet of heat exchanger 3 of DCS controller 21 is used to adjust the heat exchange between cooling water and hot airflow, thereby controlling the airflow temperature around the motor body 14 and achieving precise adjustment of motor temperature.

[0036] like Figure 1 and Figure 3 As shown, the opening of the collecting pipe 12 is narrow in the middle and wide at both ends. Multiple parallel air inlet pipes 2 are provided between the collecting pipe 12 and the heat exchanger 3 to achieve more uniform collection of hot airflow inside the protective shell 1. It can be understood that the opening of the distribution pipe 13 is also narrow in the middle and wide at both ends to achieve more uniform distribution of cooling gas into the protective shell 1, ensuring that the motor body 14 receives more comprehensive cooling.

[0037] For low-voltage motors, there is generally no internal cavity, the gap between the rotor and stator is small, and the stator and housing are integrated. For such motors, a protective shell can be placed over the entire motor to isolate the motor's operating environment from the external environment. A fan, ductwork, and heat exchanger are then installed on the protective shell, allowing the gas inside the shell to circulate as a heat exchange medium. Clean cooling water is circulated through the heat exchanger as a cold source.

[0038] High-voltage motors typically have an internal cavity with a significant gap between the rotor and stator, and the stator is exposed within the cavity, while the outer casing is separate from the stator. For such motors, the outer casing can be used directly as a protective shell, with a fan, ductwork, and heat exchanger mounted on it to achieve motor cooling within a closed space. Since the stator and rotor are directly exposed to the air, the internal airflow can directly cool the stator and rotor, significantly improving the cooling effect.

[0039] By constructing a cooling device for the motor in a closed space, interference from the external environment can be prevented, and problems such as dust and corrosion on the motor can also be avoided. This allows the motor to operate for a long time in any environment without affecting the cooling effect, thereby extending the service life of the motor.

[0040] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An electric machine cooling device, characterized in that, The application relates to an electric machine cooling device. The application relates to an electric machine cooling device.

2. The electric machine cooling arrangement of claim 1, wherein, The application relates to an electric machine cooling device.

3. The electric machine cooling arrangement of claim 2, wherein, The application relates to an electric machine cooling device.

4. The electric machine cooling arrangement of claim 3, wherein, The application relates to an electric machine cooling device.

5. The electric machine cooling arrangement of claim 4, wherein, The application relates to an electric machine cooling device.

6. The electric machine cooling arrangement of claim 4, wherein, The application relates to an electric machine cooling device.

7. The electric machine cooling arrangement of claim 4, wherein, The application relates to an electric machine cooling device.

8. The electric machine cooling arrangement according to any one of claims 1 to 7, characterized in that, The application relates to an electric machine cooling device.

9. The electric machine cooling arrangement according to any one of claims 1 to 7, characterized in that, The application relates to an electric machine cooling device.

10. The electric machine cooling arrangement according to any one of claims 1 to 7, characterized in that The application relates to an electric machine cooling device.

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