A dual-cooling motor structure

Abstract

This utility model discloses a dual-cooling motor structure, comprising a water-cooling unit and an air-cooling unit. The water-cooling unit includes water channels within the motor housing. The air-cooling unit includes air ducts, air guide slots, and several axially arranged air guide holes on the rotor assembly. The air guide slots are open slots axially located inside the motor housing, connecting to the air guide holes via a cavity on one side of the motor. The other end of the air guide slots and the other end of the air guide holes connect to the exhaust port on the other side of the motor. The air ducts provide airflow to the air guide slots. Water flows in a swirling manner, while the airflow is unidirectional. The air generated within the motor travels axially, using the shortest path to expel heat from the motor, maximizing heat dissipation efficiency. The swirling water absorbs heat that overflows into the motor housing but is not expelled by the airflow, and this heat is carried away by the water, keeping the entire motor in a water-cooled state. The air introduced through the air ducts is further cooled by the cooled motor housing, further improving the cooling efficiency of the cooling air within the motor cavity.

Description

Technical Field

[0001] This utility model relates to a dual-cooling motor structure, specifically a dual-cooling structure for an electric motor that combines air cooling and water cooling, and belongs to the field of motor equipment manufacturing technology. Background Technology

[0002] Existing motors generally use natural cooling, air cooling, water cooling, etc.

[0003] However, natural cooling or separate air or water cooling makes it impossible for the motor to achieve high performance with a relatively small weight.

[0004] Therefore, it is necessary to provide a dual-cooling motor structure that can achieve better performance at the same weight or lighter weight at the same performance and better cooling effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a dual-cooling motor structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dual-cooling motor structure includes a water-cooling unit and an air-cooling unit; The water-cooling unit includes a water channel located inside the casing, with the water inlet and outlet of the water channel located on the top or side of the casing, respectively. The air-cooling unit includes an air duct, an air guide slot, and several axially arranged air guide holes on the rotor assembly (rotor baffle, rotor core); the air guide slot is an open slot axially located inside the housing, and the air guide slot connects to the air guide holes through a cavity on one side of the motor. The other end of the air guide duct and the other end of the air guide hole are connected to the exhaust port on the other side of the motor; The air duct is used to provide airflow to the air guide channel.

[0007] The aforementioned air duct is arc-shaped and is installed along the outer wall of the casing in the circumferential direction; the air inlet is located on the top surface of the air duct, and the inner side of the air duct has several air outlets that are respectively connected to the air guide groove.

[0008] The number of the above-mentioned air guide channels is 8, set at equal angles, and the number of air guide channels that connect with the air outlet of the air duct is at least 5.

[0009] The aforementioned exhaust vent is located at the rear end cover of the motor.

[0010] The aforementioned water channels are Z-shaped inside the casing.

[0011] The advantages of this utility model are: This invention discloses a dual-cooling motor structure. Water channels are installed inside the casing, and air ducts are installed inside the motor cavity. The water flows in a swirling manner, while the airflow is unidirectional along the axis. The air generated inside the motor travels axially, using the shortest path to expel the heat carried by the motor, maximizing heat dissipation efficiency. The outer ring of water, in a swirling manner, absorbs heat that overflows into the casing but is not expelled by the airflow; this heat is then carried away by the water flow, keeping the entire motor in a water-cooled state. Furthermore, the airflow guided into the motor cavity by the air ducts is further cooled by the water-cooled casing, further improving the cooling efficiency of the airflow within the motor cavity.

[0012] This utility model discloses a dual-cooling motor structure, which is simple in structure and easy to use. Air cooling and water cooling cooperate and complement each other through different flow directions and paths, effectively improving the cooling efficiency of the motor. It has strong practicality and wide applicability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of the motor.

[0014] Figure 2 This is a cross-sectional view of the casing.

[0015] Figure 3 This is a schematic diagram of the air guide duct.

[0016] Figure 4 This is a schematic diagram of the air duct structure.

[0017] Figure 5 This is a schematic diagram of the air guide hole structure.

[0018] Figure 6 This is a cross-sectional view of the rotor assembly inside the housing.

[0019] Figure 7 This is a schematic diagram of the cooling airflow direction.

[0020] Figure 8 This is a schematic diagram of the cooling water flow direction.

[0021] The meanings of the markings in the attached diagram are as follows: 11. Fan platform; 12. Air duct; 13. Exhaust outlet; 14. Water outlet; 15. Water inlet; 21. Air guide duct; 22. Water channel; 23. Groove; 31. Air inlet; 32. Air outlet; 41. Air guide hole. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0023] A dual-cooling motor structure, consisting of a water-cooling unit and an air-cooling unit.

[0024] The water-cooling unit consists of a cavity tunnel forming a water channel 22 inside the motor housing. The water channel 22 is arranged axially and bent into a "Z" shape and arranged circumferentially inside the housing. The two ends of the water channel 22 are the water inlet 15 and the water outlet 14, respectively. Preferably, the water inlet 15 and the water outlet 14 are located on the top or side of the end of the motor (near the rear end cover).

[0025] The air-cooled unit consists of air duct 12, air guide slot 21 and air guide hole 41.

[0026] The duct 12 is preferably an arc-shaped tube with a hollow interior forming an air duct. The duct 12 is arranged circumferentially against the outer wall of the casing; preferably, the duct 12 is located at the end furthest from the rear end cover. The air inlet 31 is located on the top surface of the duct 12; preferably, the air inlet 31 is presented as a fan platform 11, which can be further used for mounting and fixing a fan. The air outlet 32 ​​is located on the inner side of the duct 12, i.e., the side that is in contact with the outer wall of the casing.

[0027] The air outlet 32 ​​connects to the air guide slot 21, which is located on the inner wall of the casing and arranged axially. Preferably, there are eight air guide slots 21, spaced at equal intervals and angles. That is, the eight air guide slots 21 are parallel to each other along the axial direction. At one end of the air guide slot 21, the motor has a slot 23 that passes through the casing. The air outlet 32 ​​of the air duct 12 connects to the air guide slot 21 through the slot 23, drawing air from the air duct 12 into the air guide slot 21. The air entering the air guide slot 21 then flows axially and is discharged through the exhaust port 13 located at the rear end cover. Preferably, there are at least five air guide slots 21 that connect to the air outlet 32 ​​of the air duct 12, meaning that the arc-shaped air duct 12 has at least five exhaust ports 13 located on its inner wall.

[0028] The rotor assembly (rotor baffle, rotor core) is provided with several axial air guide holes 41. The air entering the air guide groove 21 also flows into the air guide hole 41 through the cavity on one side of the motor, flows axially in the air guide hole 41 to the end of the fan, and is finally discharged through the exhaust port 13 at the rear end cover.

[0029] Work process: Cooling water flows into the housing from the inlet 15, flows around the surface of the housing along the water channel 22, and finally flows out from the outlet 14, carrying away the heat.

[0030] Five air inlets 31 near the stator winding are connected to five air outlets 32 on the inner arc surface of the air duct 12. The airflow generated by the fan enters the cavity on one side of the motor through the air duct, flows axially through the air guide groove 21 and the air guide hole 41 on the rotor, flows through the entire motor cavity, and finally flows out from the air outlet 32 ​​on the rear end cover, carrying away the heat.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A dual-cooling motor structure, characterized in that, Includes water-cooled units and air-cooled units; The water-cooling unit includes a water channel located inside the casing, with the water inlet and outlet of the water channel located on the top or side of the casing, respectively. The air-cooling unit includes an air duct, an air guide groove, and several air guide holes arranged axially on the rotor assembly; the air guide groove is an open groove arranged axially inside the housing, and the air guide groove connects to the air guide holes through a cavity on one side of the motor. The other end of the air guide duct and the other end of the air guide hole are connected to the exhaust port on the other side of the motor; The air duct is used to provide airflow to the air guide channel.

2. The structure according to claim 1, characterized in that, The air duct is arc-shaped and is set along the outer wall of the casing in the circumferential direction; the air inlet is located on the top surface of the air duct, and the inner side of the air duct has several air outlets that are respectively connected to the air guide groove.

3. The structure according to claim 1, characterized in that, The number of air guide channels is 8, set at equal angles, and the number of air guide channels that connect with the air outlet of the air duct is at least 5.

4. The structure according to claim 1, characterized in that, The exhaust vent is located at the rear end cover of the motor.

5. The structure according to claim 1, characterized in that, The waterway is Z-shaped inside the casing.

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