Motor rotor heat dissipation structure

Abstract

The utility model relates to the technical field of motor heat dissipation, in particular to a motor rotor heat dissipation structure, which comprises a shell, a stator fixedly connected to the inner side of the shell, a connecting plate arranged on one side of the shell, a fixed cover plate arranged on one side of the shell, and a breathable cover plate fixedly connected to one side of the connecting plate. Shaft holes are formed in one sides of the connecting plate, the breathable cover plate and the fixed cover plate, a rotor is arranged on the inner side of the stator, two shaft ends of the rotor are rotatably connected to the inner sides of the shaft holes, an oil guide frame is arranged on one side of the rotor, a cooling structure is arranged on the inner side of the rotor, a cooling assembly is arranged on one side of the rotor, and two supporting plates are fixedly connected to the lower side of the shell. By arranging a rotor, an oil guide frame, a rotary sealing ring, an oil flowing hole, an oil tank A, a cooling oil pipe 13, an oil tank B, a rotary connector, a miniature water pump, a cooling fan, a baffle A, an oil outlet hole, a cooling channel, an oil injection connector and a sealing cover, the oil cooling circulating heat dissipation device has the oil cooling circulating heat dissipation function.

Description

Technical Field

[0001] The utility model relates to the technical field of motor heat dissipation, in particular to a motor rotor heat dissipation structure. Background Art

[0002] The motor is an electric motor or engine, and the rotor is the rotating part of the motor. Rotor heat dissipation is a key process to ensure the normal operation of the motor. Its purpose is to dissipate the heat generated inside the motor to the outside of the machine through heat dissipation. In the design and application of the motor, the design of the heat dissipation device is very important. To ensure the normal operation of the motor, it is necessary to select suitable materials, carry out structural design, and adopt appropriate heat dissipation methods; at the same time, the heat dissipation system needs to be adjusted according to different usage environments and workloads.

[0003] During the working process of the motor, the motor rotor will generate a lot of heat due to continuous operation. If the heat is not dissipated in time, the rotor and the motor will be damaged, and the service life of the motor rotor will be reduced. Therefore, we propose a motor rotor heat dissipation structure to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that during the working process of the motor, a large amount of heat is generated by the motor rotor due to continuous operation. If the heat is not dissipated in time, the rotor and the motor will be damaged, and the service life of the motor rotor will be reduced. A motor rotor heat dissipation structure is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A motor rotor heat dissipation structure is designed, including a shell, a stator is fixedly connected to the inner side of the shell, a connecting plate is fixedly connected to one side of the shell, a fixed cover plate is fixedly connected to one side of the shell, a breathable cover plate is fixedly connected to one side of the connecting plate, an axial hole is provided on one side of the connecting plate, a rotor is provided on the inner side of the stator, both axial ends of the rotor can be rotatably connected to the inner side of the axial hole, baffles A and baffles B are fixedly connected to the two sides of the rotor, an oil guide frame is rotatably connected to the outer side of the baffle B, the oil guide frame is fixedly connected to the inner side of the shell, an oil guide hole is provided at one axial end of the rotor, a cooling structure is provided on the inner side of the rotor, a cooling assembly is provided on one side of the rotor, and two support plates are fixedly connected to the lower side of the shell.

[0007] Preferably, a fan is provided between the connecting plate and the breathable cover plate, and the fan is fixedly connected to the shaft end of the rotor.

[0008] Preferably, the cooling structure includes a cooling oil channel, the cooling oil channel is connected to the oil guide hole, and a plurality of oil outlet holes are provided on the inner side of the baffle B, and the oil outlet holes are all connected to the cooling oil channel.

[0009] Preferably, the cooling assembly includes an oil tank A, which is fixedly connected to the lower side of the outer shell, and oil flow holes are provided between the oil guide frame, the outer shell and the oil tank A, one side of the oil tank A is fixedly connected with a plurality of cooling oil pipes, one end of the cooling oil pipe is fixedly connected with an oil tank B, a support frame is fixedly connected between the two support plates, one side of the oil tank B is provided with a micro water pump, the oil tank B and the micro water pump are both fixedly connected to the upper side of the support frame, one side of the rotor is provided with a rotary joint, the rotatable end of the rotary joint is fixedly connected to the shaft end of the rotor, the oil tank B and the rotary joint are both connected to the micro water pump through an oil pipe, and the micro water pump needs to be connected to an external power supply through a wire, the outer side of the breathable cover plate is fixedly connected with a support frame, the rotary joint is fixedly connected to the inner side of the support frame, one side of the oil tank A is provided with an oil filling interface, and the outer side of the oil filling interface is provided with a sealing cover through a threaded connection.

[0010] Preferably, a cooling fan is provided on the lower side of the housing, two fixing plates are fixedly connected between the housing and the cooling fan, and the cooling fan needs to be connected to an external power source through a wire.

[0011] Preferably, two rotating sealing rings are provided between the oil guide frame and the rotor.

[0012] The utility model proposes a motor rotor heat dissipation structure, which has the following beneficial effects:

[0013] 1. By arranging a rotor, an oil guide frame, a rotating sealing ring, an oil guide hole, an oil tank A, a cooling oil pipe, an oil tank B, a rotating joint, a micro water pump, a cooling fan, a baffle A, an oil outlet hole, a cooling channel, an oil filling interface, a sealing cover, and a baffle B, the utility model has an oil cooling circulation and heat dissipation function.

[0014] 2. By providing a connecting plate, a breathable cover plate and a fan, the utility model can perform basic heat dissipation without starting the oil cooling circulation heat dissipation function when the rotor temperature is not high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front three-dimensional structural schematic diagram of a motor rotor heat dissipation structure proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the internal three-dimensional structure of a motor rotor heat dissipation structure proposed by the utility model;

[0017] Figure 3This is a front cutaway three-dimensional structural schematic diagram of a motor rotor heat dissipation structure proposed by the utility model;

[0018] Figure 4 The utility model is proposed Figure 3 Schematic diagram of the local enlarged structure of area A in the middle.

[0019] In the figure: 1 housing, 2 stator, 3 connecting plate, 4 fixed cover plate, 5 rotor, 6 breathable cover plate, 7 support plate, 8 fan, 9 oil guide frame, 10 rotating sealing ring, 11 oil guide hole, 12 oil tank A, 13 cooling oil pipe, 14 oil tank B, 15 rotary joint, 16 micro water pump, 17 cooling fan, 18 baffle A, 19 oil outlet hole, 20 cooling channel, 21 support frame, 22 support frame, 23 fixed plate, 24 oil filling interface, 25 sealing cover, 26 baffle B. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A motor rotor heat dissipation structure comprises a shell 1, a stator 2 is fixedly connected to the inner side of the shell 1, a connecting plate 3 is fixedly connected to one side of the shell 1, a fixed cover plate 4 is fixedly connected to one side of the shell 1, a breathable cover plate 6 is fixedly connected to one side of the connecting plate 3, an axial hole is provided on one side of the connecting plate 3, the breathable cover plate 6 and the fixed cover plate 4, a rotor 5 is provided on the inner side of the stator 2, both shaft ends of the rotor 5 can be rotatably connected to the inner side of the shaft hole, a fan 8 is provided between the connecting plate 3 and the breathable cover plate 6, and the fan 8 is fixedly connected to the shaft end of the rotor 5; the fan 8 is provided so that the utility model can perform basic heat dissipation without starting the oil cooling cycle heat dissipation function when the rotor temperature is not high;

[0022] Baffles A18 and B26 are fixedly connected on both sides of the rotor 5. An oil guide frame 9 is rotatably connected to the outer side of the baffle B26. Two rotating sealing rings 10 are arranged between the oil guide frame 9 and the baffle B26. The oil guide frame 9 is fixedly connected to the inner side of the housing 1. An oil guide hole 11 is arranged at one axial end of the rotor 5. A cooling structure is arranged on the inner side of the rotor 5. The cooling structure includes a cooling oil channel 20. The cooling oil channel 20 is connected to the oil guide hole 11. A plurality of oil outlet holes 19 are arranged on the inner side of the baffle B26. The oil outlet holes 19 are all connected to the cooling oil channel 20. The housing 1 Two support plates 7 are fixedly connected to the lower side of the housing 1; a cooling assembly is provided on one side of the rotor 5, and the cooling assembly includes an oil tank A12, which is fixedly connected to the lower side of the housing 1, and oil flow holes are provided between the oil guide frame 9, the housing 1 and the oil tank A12, and a plurality of cooling oil pipes 13 are fixedly connected to one side of the oil tank A12, and an oil tank B14 is fixedly connected to one end of the cooling oil pipe 13, and a support frame 21 is fixedly connected between the two support plates 7, and a micro water pump 16 is provided on one side of the oil tank B14, and the oil tank B14 and the micro water pump 16 are fixedly connected to the support On the upper side of the support frame 21, a rotary joint 15 is provided on one side of the rotor 5, and a rotatable end of the rotary joint 15 is fixedly connected to the shaft end of the rotor. The oil tank B14 and the rotary joint 15 are connected to the micro water pump 16 through an oil pipe. The micro water pump 16 needs to be connected to an external power supply through a wire. The outer side of the breathable cover plate 6 is fixedly connected to a support frame 22, and the rotary joint 15 is fixedly connected to the inner side of the support frame 22. An oil filling interface 24 is provided on one side of the oil tank A12, and a sealing cover 25 is provided on the outer side of the oil filling interface 24 through a threaded connection; a cooling fan is provided on the lower side of the housing 1. 17, two fixing plates 23 are fixedly connected between the housing 1 and the cooling fan 17, and the cooling fan 17 needs to be connected to an external power supply through a wire; when in use, cooling oil is injected into the oil tank A12 through the oil filling interface 24, and the micro water pump 16 is started to transport the cooling oil to the rotary joint 15 through the pipeline until the entire cooling structure is filled with cooling oil, and then the sealing cover 25 is tightened. After the motor is started, the oil pump continues to work to circulate the cooling oil, so that the device has oil cooling and heat dissipation function; the cooling fan 17 is set to dissipate the cooling oil in the cooling oil pipe 13.

[0023] The use principle and use process of the utility model are as follows: before use, cooling oil is injected into the oil tank A12 through the oil injection interface 24, and the micro water pump 16 is started to transport the cooling oil to the rotary joint 15, the rotor 5, and the oil guide frame 9 through the pipeline, until the entire cooling structure is filled with cooling oil, and then the sealing cover 25 is tightened. After the motor is started, the rotor drives the fan 8 to rotate, which plays a basic heat dissipation role for the rotor; when the temperature is too high, the micro water pump 16 is started to make the cooling oil circulate in the cooling structure, and the cooling fan 17 is started at the same time, so that the cooling fan 17 dissipates heat to a plurality of cooling oil pipes 13, so that the temperature of the cooling oil is reduced.

[0024] It should be noted that:

[0025] The stator 2, rotor 5, rotary seal ring 10, micro water pump 16, and rotary joint 15 proposed in this application are all prior art, and their specific functions and usages are not described in detail herein.

[0026] The rotary seal ring 10 is a kind of high-speed rotary seal ring, which is also a TC oil seal. Its rotary oil seal specification structure is constructed by three parts, namely, the oil seal body, the reinforcement frame and the self-tightening coil spring. The dense body is divided into the bottom, the waist, the cutting edge and the sealing lip according to different parts. Usually, the inner diameter of the rotary seal ring in the state is smaller than the shaft diameter, that is, it has a certain "interference". Therefore, after the seal ring is installed on the oil seal seat and the shaft, the pressure of the rotary seal ring cutting edge and the contraction force of the self-tightening coil spring produce a certain radial tightening force on the shaft. After a period of operation, the pressure will decrease rapidly or even disappear. Therefore, the addition of the spring can compensate the self-tightening force of the oil seal at any time. The high-speed rotary seal ring must be coated with grease on the sealing element, and at the same time ensure that the rotary seal ring is perpendicular to the axis. If it is not perpendicular, the sealing lip will dry the lubricating oil from the shaft, which will also cause excessive wear of the sealing lip. During operation, the lubricant in the housing seeps out a little, so that the state of forming an oil film on the sealing surface is ideal.

[0027] The micro water pump 16 is a type of water pump. Usually, machines that lift liquid, transport liquid or increase the pressure of liquid, that is, machines that convert the mechanical energy of the prime mover into liquid energy to achieve the purpose of pumping liquid are collectively referred to as water pumps. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals, etc. It can also transport liquids, gas mixtures and liquids containing suspended solids.

[0028] The rotary joint 15 is a kind of rotary joint. The types of rotary joints are divided into: hydraulic rotary joints, high-pressure rotary joints, multi-channel rotary joints, high-speed rotary joints, high-temperature rotary joints, single-channel rotary joints, LED special rotary joints, excavator special rotary joints, machine tool special rotary joints, among which the high-speed rotary joint is a high-speed rotary joint component used for working speed: 3000rpm, which is mostly used in papermaking, rubber, chemical, plastic, textile, printing and dyeing, steel, metallurgy, pharmaceutical, drying, food, woodworking and other industries.

[0029] 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 motor rotor heat dissipation structure, comprising a housing (1), characterized in that: A stator (2) is fixedly connected to the inner side of the housing (1); a connecting plate (3) is fixedly connected to one side of the housing (1); a fixed cover plate (4) is fixedly connected to one side of the housing (1); a breathable cover plate (6) is fixedly connected to one side of the connecting plate (3); shaft holes are provided on one side of the connecting plate (3), the breathable cover plate (6) and the fixed cover plate (4); a rotor (5) is provided on the inner side of the stator (2); and both shaft ends of the rotor (5) are rotatably connected to the shaft. On the inner side of the hole, baffles A (18) and baffles B (26) are fixedly connected on both sides of the rotor (5), an oil guide frame (9) is rotatably connected on the outer side of the baffle B (26), and the oil guide frame (9) is fixedly connected to the inner side of the outer shell (1), an oil guide hole (11) is provided at one axial end of the rotor (5), a cooling structure is provided on the inner side of the rotor (5), a cooling assembly is provided on one side of the rotor (5), and two support plates (7) are fixedly connected to the lower side of the outer shell (1).

2. A motor rotor heat dissipation structure according to claim 1, characterized in that: A fan (8) is provided between the connecting plate (3) and the air-permeable cover plate (6), and the fan (8) is fixedly connected to the shaft end of the rotor (5).

3. The motor rotor heat dissipation structure according to claim 1, characterized in that: The cooling structure comprises a cooling oil channel (20), the cooling oil channel (20) is connected to the oil guide hole (11), and a plurality of oil outlet holes (19) are provided on the inner side of the baffle B (26), and the oil outlet holes (19) are all connected to the cooling oil channel (20).

4. The motor rotor heat dissipation structure according to claim 1, characterized in that: The cooling assembly comprises an oil tank A (12), the oil tank A (12) being fixedly connected to the lower side of the housing (1), an oil flow hole being provided between the oil guide frame (9), the housing (1) and the oil tank A (12), a plurality of cooling oil pipes (13) being fixedly connected to one side of the oil tank A (12), an oil tank B (14) being fixedly connected to one end of the cooling oil pipe (13), a support frame (21) being fixedly connected between the two support plates (7), a micro water pump (16) being provided to one side of the oil tank B (14), the oil tank B (14) and the micro water pump (16) being fixedly connected to the upper side of the support frame (21), A rotary joint (15) is provided on one side of the rotor (5), and a rotatable end of the rotary joint (15) is fixedly connected to the shaft end of the rotor (5). The oil tank B (14) and the rotary joint (15) are connected to a micro water pump (16) via an oil pipe, and the micro water pump (16) needs to be connected to an external power supply via a wire. The outer side of the breathable cover plate (6) is fixedly connected to a support frame (22), and the rotary joint (15) is fixedly connected to the inner side of the support frame (22). An oil filling interface (24) is provided on one side of the oil tank A (12), and a sealing cover (25) is provided on the outer side of the oil filling interface (24) via a threaded connection.

5. The motor rotor heat dissipation structure according to claim 1, characterized in that: A cooling fan (17) is provided on the lower side of the housing (1), and two fixing plates (23) are fixedly connected between the housing (1) and the cooling fan (17). The cooling fan (17) needs to be connected to an external power source via a wire.

6. The motor rotor heat dissipation structure according to claim 1, characterized in that: Two rotating sealing rings (10) are provided between the oil guide frame (9) and the baffle B (26).

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