Stator front end cover of external rotor motor

Abstract

The utility model provides a stator front end cover of an external rotor motor, which comprises a stator front end cover body, a plurality of diversion cavities distributed at intervals in the circumferential direction are arranged in the stator front end cover body and located at the edge of the stator front end cover body, and the inner side of each diversion cavity is provided with a cooling liquid inlet. A cooling liquid outlet is formed in the stator front end cover body on the inner sides of all the flow guide cavities, and all the flow guide cavities are communicated with the cooling liquid outlet; after the stator winding is applied to the external rotor motor, the cooling liquid inlet which is communicated with the plurality of diversion cavities one by one can collect cooling liquid which cools the stator winding from a plurality of positions and enables the cooling liquid to be discharged timely through the cooling liquid outlet. Therefore, the cooling effect of the cooling liquid on the stator winding is prevented from being influenced because the cooling liquid cannot be discharged in time.

Description

Technical Field

[0001] The utility model relates to the technical field of outer rotor motors, in particular to a stator front end cover of an outer rotor motor. Background Art

[0002] The outer rotor motor is a common type of motor on the market. When the high-power, high-speed outer rotor motor on the market is working, the stator winding inside the outer rotor motor will generate more heat. In order to improve the cooling effect of the stator winding, there are motors on the market that use coolant to cool the stator winding. For example, the motor with bearing and stator winding cooling function disclosed in Chinese patent publication number: CN116545159A, when the motor is in use, the coolant can flow through the casing to cool the stator winding. However, in the above-mentioned motor with bearing and stator winding cooling function In the machine structure, although the coolant can flow through the casing and cool the stator winding, when the coolant needs to be discharged from the casing after cooling the stator winding, since the motor is only provided with a single coolant outlet on one side of the casing, the coolant close to the coolant outlet can be smoothly discharged to the outside of the casing through the coolant outlet, while the coolant far away from the coolant outlet may not be discharged to the outside of the casing through the coolant outlet in time, that is, it is easy to cause a large temperature rise of the coolant far away from the coolant outlet, that is, the cooling effect of the coolant on the stator winding will be affected because the coolant cannot be discharged from the casing in time. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stator front end cover of an outer rotor motor. After being applied to the outer rotor motor, the coolant inlet connected to a plurality of guide cavities one by one can collect the coolant after cooling the stator winding from multiple positions and discharge the coolant through the coolant outlet in time, thereby avoiding affecting the cooling effect of the coolant on the stator winding due to the inability to discharge the coolant in time.

[0004] The utility model provides a stator front end cover of an outer rotor motor, comprising a stator front end cover body, a plurality of flow guide cavities distributed at circumferential intervals are arranged inside the stator front end cover body and at the edge of the stator front end cover body, a coolant inlet is arranged on the inner side of each flow guide cavity, a coolant outlet is arranged on the stator front end cover body located on the inner sides of all the flow guide cavities, and all the flow guide cavities are connected with the coolant outlet.

[0005] After the utility model is applied to the outer rotor motor, the coolant inlet connected to the plurality of guide cavities one by one can collect the coolant after cooling the stator winding from multiple positions and discharge the coolant through the coolant outlet in time, thereby avoiding the cooling effect of the coolant on the stator winding being affected by the inability to discharge the coolant in time.

[0006] In a possible embodiment, an annular flow channel is provided inside the stator front end cover body, and the annular flow channel is located on the inner side of all the guide cavities, and each guide cavity is connected to the annular flow channel through the guide channel located between the guide cavity and the annular flow channel, and the coolant outlet is connected to the annular flow channel; through the provision of the annular flow channel, and each guide cavity is connected to the annular flow channel through the guide channel located between the guide cavity and the annular flow channel, each guide cavity can be reliably connected to the coolant outlet, that is, each coolant inlet can be reliably connected to the coolant outlet.

[0007] In a possible implementation, each guide channel is located in the middle of the extension direction of the corresponding guide cavity; by adopting this structure, each guide channel can reliably guide the coolant located in the corresponding guide cavity into the annular flow channel.

[0008] In a possible implementation, all guide cavities are evenly spaced inside the stator front end cover body along the circumferential direction of the stator front end cover body; by adopting this structure, all guide cavities can evenly collect the coolant after cooling the stator winding in the outer rotor motor through the coolant inlets at the corresponding positions.

[0009] In a possible implementation, each coolant inlet is aligned with the middle of the corresponding guide cavity; by adopting this structure, the coolant after cooling the stator winding in the outer rotor motor can evenly enter each guide cavity through each coolant inlet and be collected by the guide cavity.

[0010] In a possible implementation, a plurality of reinforcing ribs spaced apart in the circumferential direction are provided at the inner edge of the inner end of the stator front end cover body; by adopting this structure, the structural strength of the stator front end cover body can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0013] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0014] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0015] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0016] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] See also Figure 1-2 As shown, an embodiment of the present application discloses a stator front end cover of an outer rotor motor, including a stator front end cover body 1, a plurality of circumferentially spaced guide cavities 11 are arranged inside the stator front end cover body 1 and at the edge of the stator front end cover body 1, a coolant inlet 12 is arranged on the inner side of each guide cavity 11, a coolant outlet 13 is arranged on the stator front end cover body 1 located on the inner side of all the guide cavities 11, and all the guide cavities 11 are connected to the coolant outlet 13.

[0018] An annular flow channel 14 is provided inside the stator front end cover body 1, and the annular flow channel 14 is located on the inner side of all the guide cavities 11. Each guide cavity 11 is connected to the annular flow channel 14 through a guide channel 15 located between the guide cavity 11 and the annular flow channel 14, and the coolant outlet 13 is connected to the annular flow channel 14. By setting the annular flow channel, and each guide cavity is connected to the annular flow channel through the guide channel located between the guide cavity and the annular flow channel, each guide cavity can be reliably connected to the coolant outlet, that is, each coolant inlet can be reliably connected to the coolant outlet.

[0019] Each guide channel 15 is located in the middle of the extension direction of the corresponding guide cavity 11; by adopting this structure, each guide channel can reliably guide the coolant located in the corresponding guide cavity to the annular flow channel.

[0020] All guide cavities 11 are evenly spaced inside the stator front end cover body 1 along the circumferential direction of the stator front end cover body 1; by adopting this structure, all guide cavities can evenly collect the coolant after cooling the stator winding in the outer rotor motor through the coolant inlets at the corresponding positions.

[0021] Each coolant inlet 12 is aligned with the middle of the corresponding guide cavity 11; by adopting this structure, the coolant after cooling the stator winding in the outer rotor motor can evenly enter each guide cavity through each coolant inlet and be collected by the guide cavity.

[0022] A plurality of reinforcing ribs 16 are arranged at intervals in the circumferential direction at the inner edge of the inner end of the stator front end cover body 1; by adopting this structure, the structural strength of the stator front end cover body can be improved.

[0023] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A stator front end cover of an outer rotor motor, comprising a stator front end cover body (1), characterized in that: A plurality of flow guide cavities (11) are arranged inside the stator front end cover body (1) and at the edge of the stator front end cover body (1) and are distributed at intervals in the circumferential direction; a coolant inlet (12) is arranged on the inner side of each of the flow guide cavities (11); a coolant outlet (13) is arranged on the stator front end cover body (1) located on the inner side of all the flow guide cavities (11); and all the flow guide cavities (11) are in communication with the coolant outlet (13).

2. The stator front end cover of the outer rotor motor according to claim 1, characterized in that: An annular flow channel (14) is provided inside the stator front end cover body (1), and the annular flow channel (14) is located on the inner side of all the guide cavities (11). Each of the guide cavities (11) is connected to the annular flow channel (14) via a guide channel (15) located between the guide cavity (11) and the annular flow channel (14), and the coolant outlet (13) is connected to the annular flow channel (14).

3. The stator front end cover of the outer rotor motor according to claim 2, characterized in that: Each of the guide channels (15) is located in the middle of the extension direction of the corresponding guide cavity (11).

4. The stator front end cover of the outer rotor motor according to any one of claims 1 to 3, characterized in that: All the guide cavities (11) are distributed at equal intervals inside the stator front end cover body (1) along the circumferential direction of the stator front end cover body (1).

5. The stator front end cover of the outer rotor motor according to claim 4, characterized in that: Each of the cooling liquid inlets (12) is aligned with the middle of the corresponding flow guide cavity (11).

6. The stator front end cover of the outer rotor motor according to any one of claims 1 to 3, characterized in that: A plurality of reinforcing ribs (16) distributed at intervals in the circumferential direction are arranged at the inner edge of the inner end of the stator front end cover body (1).

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