Motor cooling end cap and motor

Abstract

The utility model provides a kind of motor cooling end cover and motor, motor cooling end cover has: inner end surface and outer end surface;Side wall;Cooling flow passage;First liquid inlet passage, the first liquid inlet passage has from the first liquid inlet of exposure of the side wall;First liquid outlet passage, the first liquid outlet passage has from the first liquid outlet of exposure of the side wall;Second liquid inlet passage, the second liquid inlet passage has from the second liquid inlet of exposure of inner end surface;Second liquid outlet passage, the second liquid outlet passage has from the second liquid outlet of exposure of inner end surface.The utility model discloses motor cooling end cover and motor, by setting along the first liquid inlet and the second liquid outlet of exposure of the first liquid inlet pipe and the first liquid outlet pipe of side wall and the second liquid inlet pipe and the second liquid outlet pipe from the second liquid inlet and the second liquid outlet of exposure of inner end surface, so that motor cooling end cover can simultaneously compatible water-cooled motor or air-cooled or natural cold motor and so on different cooling mode motor.

Description

Technical Field

[0001] This utility model relates to the field of motor structure, specifically to a motor cooling end cover and a motor. Background Technology

[0002] For certain high-speed, reciprocating operating conditions, the lifespan of motor bearings is often limited by their operating temperature. Excessive bearing temperature can lead to grease liquefaction and loss, accelerated bearing wear, abnormal motor noise, and disruption of normal motor operation. With the increasing power density requirements of motors today, internal heat generation has surged, and insufficient effective heat dissipation space results in excessively high internal temperatures. The harsh operating conditions and limited cooling capabilities make it easier for heat to accumulate at the bearings, causing premature bearing failure. Therefore, circulating cooling of bearings is of paramount importance.

[0003] Adding a bearing water jacket to the end cover is an effective method. Circulating liquid cooling can efficiently remove heat from the motor, maintaining the bearing temperature at a low level, extending motor life, and improving operational stability. However, this method has limitations and is incompatible with motors using different cooling methods. Therefore, it is necessary to improve existing motors to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a motor cooling end cover to solve the technical problem that existing end covers with bearing heat dissipation function cannot be compatible with motors with different cooling methods such as water-cooled motors, air-cooled motors, or natural-cooled motors.

[0005] To achieve the above objectives, this utility model provides a motor cooling end cover, which has the following features: Inner end face and outer end face; Sidewall, the sidewall connecting the inner end face and the outer end face; A cooling channel, which is located inside the motor cooling end cover and is annular in shape; A first liquid inlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The first liquid inlet channel has a first liquid inlet exposed from the side wall. A first liquid outlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The first liquid outlet channel has a first liquid outlet exposed from the side wall. The second liquid inlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The second liquid inlet channel has a second liquid inlet exposed from the inner end face. The second liquid outlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The second liquid outlet channel has a second liquid outlet exposed from the inner end face.

[0006] As a further improvement of this utility model, the motor cooling end cover is configured to be in a first state, a second state, a third state, or a fourth state. In the first state, the first liquid inlet and the first liquid outlet are open, and the second liquid inlet and the second liquid outlet are closed; In the second state, the second inlet and the second outlet are open, while the first inlet and the first outlet are closed. In the third state, the first liquid inlet and the first liquid outlet, as well as the second liquid inlet and the second liquid outlet, are all open; In the fourth state, the first inlet and the first outlet, as well as the second inlet and the second outlet, are all closed.

[0007] As a further improvement of this utility model, the inner end face of the motor cooling end cover is provided with a bearing groove, and the cooling channel is arranged around the bearing groove.

[0008] As a further improvement of this utility model, the second liquid inlet channel and the second liquid outlet channel are arranged radially on the outside of the cooling channel.

[0009] As a further improvement of this utility model, the motor cooling end cover includes a main body and a cover body. The main body has a groove facing the outer end face. The cover body is fixedly connected to the main body. The cover body and the groove form a cooling channel.

[0010] As a further improvement of this utility model, the motor cooling end cover includes sealing rings located radially on both sides of the groove, and the sealing rings abut against the end cover and the main body.

[0011] As a further improvement of this utility model, the groove is annular, and the motor cooling end cover also includes a stop block disposed in the groove, the stop block circumferentially cutting off the cooling channel.

[0012] As a further improvement of this utility model, the stop block is detachably fixed in the groove by screws.

[0013] As a further improvement of this utility model, the first liquid inlet channel and the first liquid outlet channel are directly connected to both ends of the cooling channel, and / or the second liquid inlet channel is connected to the first liquid inlet channel, and the second liquid outlet channel is connected to the first liquid outlet channel.

[0014] As a further improvement of this utility model, the first liquid inlet, the first liquid outlet and / or the second liquid inlet and the second liquid outlet are provided with sealing threads. The motor cooling end cover also includes a threaded seal, which cooperates with the sealing thread to seal the first liquid inlet and the first liquid outlet, and / or seal the second liquid inlet and the second liquid outlet.

[0015] This utility model also provides an electric motor, which includes an output shaft and a bearing on the output shaft. The electric motor also includes a motor cooling end cover as described above, which supports the bearing.

[0016] As a further improvement of this utility model, the motor also includes an external liquid cooling component, which is disposed outside the motor and communicates with the first liquid inlet and the second liquid inlet.

[0017] As a further improvement of this utility model, the motor body is provided with a liquid cooling channel, the liquid cooling channel having a cold liquid outlet and a cold liquid inlet, and in the open state, the second liquid inlet and the second liquid outlet are connected, the cold liquid outlet is connected to the second liquid inlet, and the cold liquid inlet is connected to the second liquid outlet.

[0018] As a further improvement of this utility model, the motor body includes a motor stator, and the liquid cooling channel passes through the motor stator.

[0019] The beneficial effects of this utility model are as follows: The motor cooling end cover and motor of this utility model, by setting a first liquid inlet channel and a first liquid outlet channel with a first liquid inlet and a second liquid outlet exposed along the side wall, and a second liquid inlet channel and a second liquid outlet channel with a second liquid inlet and a second liquid outlet exposed from the inner end face, can simultaneously accommodate motors with different cooling methods such as water-cooled motors, air-cooled motors, or naturally cooled motors by controlling the opening and closing states of the first liquid inlet, the first liquid outlet, the second liquid inlet, and the second liquid outlet, as well as the connection method of the coolant in the first liquid inlet, the first liquid outlet, the second liquid inlet, and the second liquid outlet. Moreover, the cooling circulation interface between the end cover and different motors is easy to adapt and install, and the cooling effect is good. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural schematic diagram of the motor cooling end cover of this utility model; Figure 2 This is a front cross-sectional view of the motor cooling end cover of this utility model. Figure 3 This is a side cross-sectional view of the motor cooling end cover of this utility model. Figure 4 This is a schematic diagram of the cooling flow channel, first liquid inlet channel, first liquid outlet channel, second liquid inlet channel and second liquid outlet channel of the motor cooling end cover of this utility model; Figure 5 This is a schematic diagram of the liquid cooling channel, cooling channel, first liquid inlet channel, first liquid outlet channel, second liquid inlet channel and second liquid outlet channel of the motor of this utility model. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] like Figures 1 to 5As shown, the motor of this utility model includes an output shaft, a motor cooling end cover 100, bearings arranged around the output shaft, a rotor, and a stator. The motor cooling end cover 100 can be a front end cover or a rear end cover, or both the front end cover and the rear end cover can be the same motor cooling end cover 100. In some embodiments, the motor can be in the form of a housing disposed outside the stator; in some embodiments, the motor may not have a housing, and the stator core may be directly exposed to the installation environment.

[0025] The motor cooling end cover 100 supports the bearing shown, and the bearing abuts against the motor cooling end cover 100.

[0026] The motor cooling end cover 100 has an inner end face 1, an outer end face 2, a side wall 3, a shaft hole 4, and a bearing groove 5.

[0027] The inner end face 1 faces the stator, the outer end face 2 faces the side away from the stator, and the side wall 3 connects the inner end face 1 and the outer end face 2.

[0028] The shaft hole 4 is located in the middle of the motor cooling end cover 100. The shaft hole 4 is used for the output shaft to pass through. The inner end face 1 and the outer end face 2 are located on both sides of the shaft hole 4 in the axial direction.

[0029] The bearing groove 5 is recessed on one side of the inner end face 1 and toward the outer end face 2, and the bearing is housed in the bearing groove 5.

[0030] The motor cooling end cover 100 is provided with a cooling channel 6, a first liquid inlet channel 7, a first liquid outlet channel 8, a second liquid inlet channel 9, and a second liquid outlet channel 10.

[0031] The cooling channel 6 is located within the motor cooling end cover 100 and is annular. The cooling channel 6 is used to circulate coolant and dissipate heat from the bearing that abuts against the motor cooling end cover 100. In this embodiment, the cooling channel 6 is arranged around the bearing groove 5. The heat from the bearing is transferred to the motor cooling end cover 100, where the coolant in the cooling channel 6 cools the bearing. The heat is carried away by the coolant, preventing the motor from facing problems such as excessive bearing heat generation and insufficient bearing grease life due to excessive bearing temperature rise, thus achieving effective heat dissipation from the bearing.

[0032] In some embodiments, when the motor is an air-cooled motor, the cooling channel 6 may not circulate coolant, but may simply serve as a coolant storage area. When the motor is a naturally cooled motor, the cooling channel 6 serves as a coolant circulation channel.

[0033] The first liquid inlet channel 7 is located inside the motor cooling end cover 100 and communicates with the cooling channel 6. The first liquid inlet channel 7 has a first liquid inlet 71 away from the cooling channel 6, and the first liquid inlet 71 is exposed from the side wall 3.

[0034] The first liquid outlet channel 8 is located inside the motor cooling end cover 100 and communicates with the cooling channel 6. The first liquid outlet channel 8 has a first liquid outlet 81 away from the cooling channel 6, and the first liquid outlet 81 is exposed from the side wall 3.

[0035] The second liquid inlet channel 9 is located inside the motor cooling end cover 100 and communicates with the cooling channel 6. The second liquid inlet channel 9 has a second liquid inlet 91 exposed from the inner end face 1, and the second liquid inlet 91 is located radially outside the cooling channel 6.

[0036] The second liquid outlet channel 10 is located inside the motor cooling end cover 100 and communicates with the cooling channel 6. The second liquid outlet channel 10 has a second liquid outlet 101 exposed from the inner end face 1, and the second liquid outlet 101 is located radially outside the cooling channel 6.

[0037] In this embodiment, the cooling channel 6 can receive liquid through the first inlet 71 and exit liquid through the first outlet 81. The first inlet 71 and the first outlet 81 are disposed on the side wall 3. Thus, when the motor also includes an external liquid cooling component, the external liquid cooling component is disposed outside the motor and communicates with the first inlet 71 and the first outlet 81. In a specific embodiment, this communication method is applied to non-liquid-cooled motors, including motors without liquid cooling pipes in the housing or stator. When the motor uses natural cooling or air cooling, coolant is introduced through the external liquid cooling component to cool the bearings.

[0038] The motor cooling end cover 100 is configured to be in a first state, a second state, a third state, or a fourth state. In the first state, the first liquid inlet 71 and the first liquid outlet 81 are open, and the second liquid inlet 91 and the second liquid outlet 101 are closed; at this time, the motor cooling end cover 100 communicates with the external liquid cooling component to introduce and export coolant, and independently circulates to cool the bearing.

[0039] In the second state, the second liquid inlet 91 and the second liquid outlet 101 are open, and the first liquid inlet 71 and the first liquid outlet 81 are closed; at this time, the second liquid inlet 91 and the second liquid outlet 101 of the motor cooling end cover 100 are connected to the coolant of the motor body, and the coolant circulates between the motor body and the end cover to cool the bearing.

[0040] In the third state, the first liquid inlet 71 and the first liquid outlet 81, the second liquid inlet 91 and the second liquid outlet 101 are all open; at this time, the motor and bearings are cooled by the dual liquid inlets and dual liquid outlets, the motor body is circulated with coolant to the motor end cover, and the motor end cover is also connected to an external liquid cooling component to access the coolant, thereby realizing the reciprocating connection of the entire circulating water circuit.

[0041] In the fourth state, the first liquid inlet 71 and the first liquid outlet 81, as well as the second liquid inlet 91 and the second liquid outlet 101, are all closed; at this time, the cooling channel 6 stores water or coolant. Understandably, water or coolant is added to the end cap to increase the specific heat capacity and improve the heat exchange efficiency, thereby achieving the purpose of heat dissipation for the motor.

[0042] When the motor is a liquid-cooled motor, the motor body is provided with a liquid cooling channel 200. The liquid cooling channel 200 has a coolant outlet 201 and a coolant inlet 202, which are relative to the motor cooling end cover 100. When the second liquid inlet 91 and the second liquid outlet 101 are open, the coolant outlet 201 is connected to the second liquid inlet 91, and the coolant inlet 202 is connected to the second liquid outlet 101. In this case, the liquid cooling channel 200 can cool the actuator. At the same time, by connecting the liquid cooling channel 200 to the cooling channel 6, the coolant in the liquid cooling channel 200 can be used to cool the bearing, eliminating the need for additional water pipe joints and simplifying user operation.

[0043] It should be noted that some liquid-cooled motors are casing-less motors, with the liquid cooling channels located inside the stator, while for liquid-cooled motors with casings, the liquid cooling channels are preferably located inside the casing.

[0044] The second liquid inlet channel 9 and the second liquid outlet channel 10 are radially disposed on the outer side of the bearing groove 5. Preferably, they are axially flush with the liquid cooling channel 200.

[0045] In this embodiment, the second liquid inlet channel 9 is connected to the first liquid inlet channel 7, and the second liquid outlet channel 10 is connected to the first liquid outlet channel 8. That is, in this embodiment, the second liquid inlet channel 9 and the second liquid outlet channel 10 are not directly connected to the cooling channel 6, but are indirectly connected to the cooling channel 6 through the first liquid inlet channel 7 and the first liquid outlet channel 8. In this embodiment, the second liquid inlet channel 9 and the second liquid outlet channel 10 only extend along the axial direction. With this setting, it is sufficient that the first liquid inlet 71 and the first liquid outlet 81 are exposed from the side wall 3.

[0046] The motor cooling end cover 100 includes a main body 11, a cover 12 and a sealing ring 13. The main body 11 has a groove 111 facing the outer end face 2. The cover 12 is fixedly connected to the main body 11. The cover 12 and the groove 111 form a cooling channel 6.

[0047] In this embodiment, the main body 11 and the cover 12 can be connected by screws to form the cooling channel 6. The structure is simple, does not require welding assembly, and does not need to restrict the materials of the main body 11 and the cover 12.

[0048] The sealing ring 13 is located radially on both the inner and outer sides of the groove 111, and the sealing ring 13 abuts against the cover 12 and the main body 11. The sealing ring 13 can seal the cooling channel 6.

[0049] The groove 111 can be directly molded, avoiding machining to reduce surface pinhole defects.

[0050] Furthermore, the groove 111 is annular, and the motor cooling end cover 100 also includes a baffle 14 disposed in the groove 111. The baffle 14 circumferentially cuts off the cooling channel 6, so that the coolant flows from one end to the other. The first liquid inlet channel 7 and the first liquid outlet channel 8 are directly connected to both ends of the cooling channel 6, and / or the second liquid inlet channel 9 is connected to the first liquid inlet channel 7, and the second liquid outlet channel 10 is connected to the first liquid outlet channel 8.

[0051] In this embodiment, the first liquid inlet channel 7 and the first liquid outlet channel 8 are respectively connected to the two ends of the adjacent baffle 14 of the cooling channel 6. Furthermore, the second liquid inlet channel 9 is connected to the first liquid inlet channel 7, and the second liquid outlet channel 10 is connected to the first liquid outlet channel 8.

[0052] In this embodiment, the stop block 14 is detachably fixed within the groove 111 by screws. The groove 111 is formed into a complete annular shape during mold making, and during assembly, the stop block 14 is fixed within the groove 111 to form a partition. In some embodiments, to improve the sealing performance of the stop block 14, it can be made of an elastic material or a rigid material with a sealing ring around it. This installation method has a lower cost.

[0053] Of course, in other embodiments, it can also be formed directly during mold forming.

[0054] To accommodate different motor cooling methods, the first liquid inlet 71, the first liquid outlet 81, and / or the second liquid inlet 91 and the second liquid outlet 101 are provided with sealing threads, and countersunk holes are formed to better mate with the threaded seal 15. The motor cooling end cover 100 also includes a threaded seal 15, which mates with the sealing threads to seal the first liquid inlet 71 and the first liquid outlet 81, and / or seal the second liquid inlet 91 and the second liquid outlet 101.

[0055] When the motor cooling end cover 100 is applied to a liquid-cooled motor, the first liquid outlet 81 and the first liquid inlet 71 are sealed by the threaded seal 15, while the second liquid inlet 91 and the second liquid outlet 101 are connected to the cooling channel 6 to form a loop.

[0056] When the motor cooling end cover 100 is applied to a non-liquid-cooled motor, the second liquid outlet 101 and the second liquid inlet 91 are sealed by the threaded seal 15, while the first liquid inlet 71 and the first liquid outlet 81 are connected to the cooling channel 6 to form a loop.

[0057] The motor cooling end cover 100 and the motor of this utility model are provided with a first liquid inlet 71 and a first liquid outlet 8 exposed along the side wall 3, and a second liquid inlet 91 and a second liquid outlet 101 exposed from the inner end face 1. Thus, the motor cooling end cover 100 can be compatible with motors with different cooling methods such as water-cooled motors, air-cooled motors, or naturally cooled motors. The cooling cycle adaptation installation method between the end cover and different motors is simple and the cooling effect is good.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A motor cooling end cover, characterized in that: The motor cooling end cover has: Inner end face and outer end face; Sidewall, the sidewall connecting the inner end face and the outer end face; A cooling channel, which is located inside the motor cooling end cover and is annular in shape; A first liquid inlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The first liquid inlet channel has a first liquid inlet exposed from the side wall. A first liquid outlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The first liquid outlet channel has a first liquid outlet exposed from the side wall. The second liquid inlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The second liquid inlet channel has a second liquid inlet exposed from the inner end face. The second liquid outlet channel is located inside the motor cooling end cover and communicates with the cooling channel. The second liquid outlet channel has a second liquid outlet exposed from the inner end face.

2. The motor cooling end cover according to claim 1, characterized in that: The motor cooling end cover is configured to be in a first state, a second state, a third state, or a fourth state. In the first state, the first liquid inlet and the first liquid outlet are open, and the second liquid inlet and the second liquid outlet are closed; In the second state, the second inlet and the second outlet are open, and the first inlet and the first outlet are closed; In the third state, the first liquid inlet and the first liquid outlet, as well as the second liquid inlet and the second liquid outlet, are all open; In the fourth state, the first inlet and the first outlet, as well as the second inlet and the second outlet, are all closed.

3. The motor cooling end cover according to claim 1, characterized in that: The inner end face of the motor cooling end cover is provided with a bearing groove, and the cooling channel is arranged around the bearing groove.

4. The motor cooling end cover according to claim 1, characterized in that: The second liquid inlet channel and the second liquid outlet channel are arranged radially on the outside of the cooling channel.

5. The motor cooling end cover according to claim 1, characterized in that: The motor cooling end cover includes a main body and a cover body. The main body has a groove facing the outer end face. The cover body is fixedly connected to the main body. The cover body and the groove form a cooling channel.

6. The motor cooling end cover according to claim 5, characterized in that: The motor cooling end cover includes sealing rings located radially on both the inner and outer sides of the groove, and the sealing rings abut against the end cover and the main body.

7. The motor cooling end cover according to claim 6, characterized in that: The groove is annular, and the motor cooling end cover also includes a stop block disposed in the groove, which circumferentially cuts off the cooling channel.

8. The motor cooling end cover according to claim 7, characterized in that: The stop block is detachably fixed in the groove by screws.

9. The motor cooling end cover according to claim 1, characterized in that: The first liquid inlet channel and the first liquid outlet channel are directly connected to both ends of the cooling channel, and / or the second liquid inlet channel is connected to the first liquid inlet channel, and the second liquid outlet channel is connected to the first liquid outlet channel.

10. The motor cooling end cover according to claim 1, characterized in that: The first liquid inlet, the first liquid outlet and / or the second liquid inlet and the second liquid outlet are provided with sealing threads. The motor cooling end cover also includes a threaded seal, which cooperates with the sealing threads to seal the first liquid inlet and the first liquid outlet, and / or seal the second liquid inlet and the second liquid outlet.

11. An electric motor, characterized in that: The motor includes an output shaft with a bearing on it, and the motor also includes a motor cooling end cover as described in any one of claims 1-10, the motor cooling end cover supporting the bearing.

12. The motor according to claim 11, characterized in that: The motor also includes an external liquid cooling component, which is disposed outside the motor and communicates with the first liquid inlet and the first liquid outlet.

13. The motor according to claim 11, characterized in that: The motor body is provided with a liquid cooling channel, which has a liquid outlet and a liquid inlet. When the second liquid inlet and the second liquid outlet are open, the liquid outlet is connected to the second liquid inlet, and the liquid inlet is connected to the second liquid outlet.

14. The motor according to claim 13, characterized in that: The motor body includes a motor stator, and the liquid cooling channel passes through the motor stator.

Images