Heat insulation and heat dissipation device and motor system thereof
By designing a heat insulation and heat dissipation device, utilizing the rotating shaft to separate heat areas and employing multiple cooling methods, the problem of heat source transfer in motors under high-temperature environments was solved, enabling normal operation and improved safety of motors under high temperatures.
Patent Information
- Application Number
- CN202511325024.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-01-06
AI Technical Summary
Existing motors, when operating in high-temperature environments, experience rapid temperature rise due to heat transfer, leading to dangerous situations such as shutdown, fire, and short circuits, and existing cooling methods are insufficient to effectively address these issues.
Design a heat insulation and heat dissipation device that uses a rotating shaft to separate heat zones and utilizes a rotating shaft heat dissipation hole, air intake hole and water cooling system, combined with air cooling and water cooling methods, to block heat transfer and achieve multi-level cooling.
It effectively blocks heat transfer in high-temperature environments, ensuring normal motor operation, preventing continuous temperature rise, saving energy consumption, and improving motor safety and lifespan.
Smart Images
Figure CN121283101A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a heat insulation and heat dissipation device, and more particularly to a heat insulation and heat dissipation device and its motor system. Background Technology
[0002] During the operation of existing motors, the motors heat up due to losses such as iron loss and magnetic loss caused by various factors and environmental influences. When the motor is in a high temperature for a long time, it can lead to dangerous situations such as motor shutdown, fire, and short circuit. It can also shorten the service life of the motor and cause problems such as softening and deformation of internal circuits. Therefore, motors are designed with cooling methods such as air cooling, water cooling, and oil cooling. However, these methods mainly cool the heat generated by the motor itself.
[0003] Currently, in certain special environments, such as driving high-temperature furnace stirring, high-temperature fan rotation, and high-temperature oil pump operation, motors are subjected to high temperatures transmitted from the working environment, causing the motor to heat up rapidly beyond its own cooling capacity. This can lead to dangerous situations such as motor shutdown, fire, and short circuit, causing safety accidents and economic losses to the user or enterprise. Summary of the Invention
[0004] The purpose of this invention is to provide a heat insulation and heat dissipation device and its matching motor system for blocking and isolating heat sources in high-temperature working environments.
[0005] The technical solution adopted by the present invention to solve its technical problem is: a heat insulation and heat dissipation device, the device including a shell and a rotating shaft disposed inside the shell, the two ends of the rotating shaft extending out of the shell, characterized in that: the shell includes a shell body, a first end cover disposed at one end of the shell body, a second end cover disposed at the other end of the shell body and a third end cover disposed inside the shell body, the third end cover dividing the space inside the shell body into a first space near the first end cover and a second space near the second end cover, controlling the heat in the vicinity of the first space region of the shell body; The first end cap of the present invention is provided with a first through hole slightly larger than the rotating shaft. One end of the rotating shaft passes through the first through hole to the outside of the first end cap, and this end is mainly connected to the load. The first through hole of the present invention is provided with a plurality of grooves arranged along the axial direction, which serves to block the heat propagation at the load end and extend the heat transfer path, so as to help the internal and external negative pressures not affect each other. The second end cap of the present invention is provided with a second through hole slightly larger than the rotating shaft. The other end of the rotating shaft passes through the second through hole to the outside of the second end cap. This end is mainly connected to the drive mechanism. The second through hole of the present invention is provided with a second bearing chamber and a second bearing disposed in the second bearing chamber and cooperating with the rotating shaft, to assist the rotating shaft in rotating on the second end cover; The third end cap of the present invention is provided with a third through hole slightly larger than the rotating shaft. A third bearing chamber is provided in the third through hole and a third bearing is provided in the third bearing chamber to cooperate with the rotating shaft. The rotating shaft is connected to the third through hole through the third bearing to assist the rotating shaft to rotate on the third end cap. The portion of the rotating shaft in the first space of the present invention is provided with a plurality of heat dissipation holes in the radial direction. The air in contact with the inside of the rotating shaft is thrown out into the first space by the rotational inertia of the rotating shaft to achieve cooling and heat dissipation of the rotating shaft. The portion of the rotating shaft in the second space of the present invention is provided with an air intake hole in the radial direction, so as to draw cold air from the second space into the rotating shaft and make it contact the rotating shaft. The present invention provides a shaft through hole to connect the heat dissipation hole and the air intake hole, so that the cold air in the second space can enter the first space through the rotating shaft; The shell body of the present invention includes a first shell body and a second shell body. The first shell body includes a first inner circumferential surface, a second inner circumferential surface with an inner diameter different from that of the first inner circumferential surface, and an inner circumferential oblique surface between the first inner circumferential surface and the second inner circumferential surface. Preferably, the multiple heat dissipation holes of the rotating shaft of the present invention correspond to the inner peripheral inclined surface of the first shell body; Preferably, the multiple heat dissipation holes of the rotating shaft of the present invention correspond to the inner peripheral inclined surface and the second inner peripheral surface of the first shell body. The second shell body of the present invention is provided with an air inlet and multiple exhaust ports; The third end cap of the present invention has a plurality of exhaust holes on the end near the second inner circumferential surface. One of the exhaust holes has an air intake channel connected to the air intake on the second shell body to deliver cold air into the first space.
[0006] The rotating shaft of the present invention includes a plurality of outer peripheral surfaces, which are contained in the outer peripheral surface of the rotating shaft and have different outer diameters. The plurality of outer peripheral surfaces correspond to the housing to ensure the strength of the rotating shaft.
[0007] The second shell body of the present invention includes a water channel disposed on the outer peripheral surface of the second shell body and a water channel shell covering the water channel. The water channel is disposed around the outer peripheral surface of the second shell body, and the water channel shell is fitted onto the portion of the outer peripheral surface of the second shell body with the water channel.
[0008] A heat insulation groove is provided on the end face of the first end cap of the present invention near the shell body. The heat insulation groove is provided along the outer periphery of the first end cap towards the first through hole of the first end cap. A heat insulation material is provided in the heat insulation groove and is connected and fixed to the shell body to help the first space isolate the heat transmitted from the first end cap.
[0009] The second end cover of the present invention is further provided with a second bearing cover, the second bearing cover being provided with a second bearing through hole slightly larger than the rotating shaft, the second bearing cover covering the second bearing chamber and connecting to the second end cover, fixing the bearing and preventing the bearing from disengaging when the rotating shaft rotates.
[0010] The third end cover of the present invention is further provided with a third bearing cover, the third bearing cover being provided with a third bearing through hole slightly larger than the rotating shaft, the third bearing cover covering the third bearing chamber and connecting to the third end cover.
[0011] The first inner peripheral surface of the first shell body of the present invention is arranged in a ring on the first shell body. The first inner peripheral surface is close to the pivot and slightly larger than the pivot. The first inner peripheral surface is also provided with a shell groove to further block heat transmission.
[0012] The third end cover of the present invention has an oil inlet channel and an oil outlet channel, which are respectively connected to the third bearing chamber, and the bearing is lubricated and cooled by oil cooling.
[0013] The first end cap and the second end cap of the present invention are provided with protrusions on their end faces, and the shell body is provided with recesses that cooperate with the protrusions. The protrusions and the recesses are connected and positioned by a snap-fit, and then the first end cap, the second end cap and the shell body are fixed by bolt connection.
[0014] The shell body of the present invention is provided with a shell recess, the outer end face of the third end cap is connected and fixed to the shell recess, and the shell recess is provided on the inner end face of the shell body near the first end cap. Preferably, the shell recess is disposed on the inner end face of the shell body in the waterway region; Preferably, the recessed platform is disposed on the inner end face of the shell body near the waterway.
[0015] The cooling principle of this invention is as follows: First, the motor drives the rotating shaft of the device to rotate, and the rotation of the shaft throws out the air inside the shaft through the heat dissipation holes, thus cooling the shaft. Second, cold air is supplied through the air inlet, and the cold air enters the first space of the device through the air inlet pipe to cool the rotating shaft and the first end cover, and then enters the second space through the exhaust hole and is discharged along the exhaust port, carrying away the heat. Third, a groove is set on the end cover to block external heat from entering the first space of the device and to prevent cold air in the first space from entering the working area through the gap of the rotating shaft and causing accidents. Fourth, water channels are set to cool the outside of the device. The overall idea of this invention is to block heat transfer to the front end of the device to achieve normal operation at high temperatures. A motor system of this invention includes the above-mentioned heat insulation and heat dissipation device, a motor, and a cooling system. The motor and the rotating shaft of the heat insulation and heat dissipation device are fixedly connected by a coupling. The cooling system is connected to both the heat insulation and heat dissipation device and the motor, and cools the heat insulation and heat dissipation device and the motor in a circulating manner.
[0016] The motor system of the present invention also includes a support platform, and the heat insulation and heat dissipation device, the motor and the cooling system are respectively installed and fixed on the support platform.
[0017] The beneficial effects of this invention are: This invention ensures that the motor can operate normally in high-temperature environments above 200 degrees Celsius. Its designed structure weakens the heat from the heat source in layers and adopts multiple cooling and temperature control methods. It effectively blocks the heat source from being transferred from the motor shaft or casing to the inside of the motor, preventing the motor from continuously overheating. At the same time, it can also connect the motor cooling system in series to effectively save energy consumption. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the third end cap of the present invention; Figure 3 This is a schematic diagram of the air-cooling system of the present invention; Figure 4 This is a schematic diagram of another shell structure of the present invention; Figure 5 This is a schematic diagram of the motor system structure of the present invention; Figure 6 This is another schematic diagram of the application of the motor system of the present invention; Figure 7 This is a three-dimensional schematic diagram of the motor system of the present invention.
[0019] In the diagram: 2-Shaft, 10-Shell body, 11-First end cap, 12-Second end cap, 13-Third end cap, 111-Heat insulation groove, 112-Heat insulation cotton, 191-First space, 192-Second space, 110-First through hole, 1101-Groove, 120-Second through hole, 121-Second bearing chamber, 122-Second bearing, 123-Second bearing cover, 130-Third through hole, 131-Third bearing chamber, 132-Third bearing, 133-Third bearing cover, 21-Heat dissipation hole, 23-Intake hole, 22-Shaft through hole, 103-Air inlet, 104-Exhaust port 134-Exhaust port, 1341-Intake pipe, 105-Water channel, 106-Water channel shell, 1061-Water channel inlet, 1062-Water channel outlet, 101-First shell body, 102-Second shell body, 1011-First inner circumferential surface, 1012-Second inner circumferential surface, 1013-Third inner circumferential surface, 1010-Inner circumferential inclined surface, 10111-Shell groove, 135-Oil inlet, 136-Oil outlet, 81-Heat insulation and heat dissipation device, 82-Motor, 83-Cooling system, 84-Coupling, 85-Support platform, 86-Fan, 831-Water cooling system, 832-Air cooling system. Detailed Implementation
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0021] Example 1, see Figure 1This invention discloses a heat insulation and heat dissipation device, which includes a housing and a rotating shaft 2 disposed within the housing. Both ends of the rotating shaft extend outside the housing. The housing includes a housing body 10, a first end cap 11 disposed at one end of the housing body, a second end cap 12 disposed at the other end of the housing body, and a third end cap 13 disposed within the housing body. A heat insulation groove 111 is provided on the end face of the first end cap 11 near the housing body 10. Heat insulation cotton 112 is disposed within the heat insulation groove 111 and connected to the housing body 10. The first end cap 11 is fixedly connected to the housing body 10 by multiple bolts passing through the heat insulation cotton 112. The third end cap 13 divides the space within the housing body into sections closer to the first end cap. The first end cover 11 has a first through hole 110, and one end of the rotating shaft 2 passes through the first through hole 110 to the outside of the first end cover 11. The first through hole 110 contains a plurality of axially arranged grooves 1101. The second end cover 12 has a second through hole 120, and the other end of the rotating shaft 2 passes through the second through hole 120 to the outside of the second end cover 12. The second through hole 120 contains a second bearing chamber 121 and a second bearing 122, which is connected to the rotating shaft 2 to assist in its rotation. The second end cover 12 also has a second bearing cover 123, which covers the first through hole 191. The second bearing chamber 121 is connected to the second end cover 12 by bolts; the third end cover 13 is provided with a third through hole 130, and the third bearing chamber 131 and the third bearing 132 are provided in the third through hole 130. The rotating shaft 2 is connected to the third through hole 130 through the third bearing 132. The third end cover 13 is also provided with a third bearing cover 133, which covers the third bearing chamber 131 and is connected to the third end cover 13 by bolts; the portion of the rotating shaft 2 located in the first space 191 is provided with multiple heat dissipation holes 21 radially; the portion of the rotating shaft 2 located in the second space 192 is provided with air intake holes 23 radially; the heat dissipation holes 21 and the air intake holes 23 are connected to each other. The two sides are connected by a shaft through hole 22; the shell body 10 located in the second space 192 is provided with an air inlet 103 and multiple exhaust ports 104; the third end cover 13 is provided with multiple exhaust holes 134, one of which is provided with an air inlet pipe 1341, which is connected to the air inlet 103; the shell body 10 also includes a water channel 105 provided on the outer peripheral surface and a water channel shell 106 covering the water channel 105. The water channel 105 is arranged around the outer periphery of the shell body 10 to increase the contact area between the cooling water and the shell body. The water channel shell 106 is also provided with a water channel inlet hole 1061 and a water channel outlet hole 1062.
[0022] Example 2, see Figure 2The present invention discloses a heat insulation and heat dissipation device. The end face of the third end cover 13 of the device is circular, and a plurality of exhaust holes 134 on the third end cover 13 are arranged along the center of the circle.
[0023] Example 3, see Figure 3 This invention discloses a heat insulation and heat dissipation device, which includes a housing and a rotating shaft 2 disposed within the housing. The housing includes a housing body 10, a first end cap 11 disposed at one end of the housing body, a second end cap 12 disposed at the other end of the housing body, and a third end cap 13 disposed within the housing body. The housing body 10 includes a first housing body 101 and a second housing body 102. The first housing body 101 includes a first inner circumferential surface 1011, a second inner circumferential surface 1012 larger than the inner diameter of the first inner circumferential surface, and an inner circumferential inclined surface 1010 between the first inner circumferential surface 1011 and the second inner circumferential surface 1012. The first inner circumferential surface 1011, the second inner circumferential surface 1012, and the inner circumferential inclined surface 1010 are arranged around the first housing body 101 to guide hot air out. The rest is the same as any other embodiment of this invention or a combination of two or more embodiments.
[0024] Example 4, see Figure 4This invention discloses a heat insulation and heat dissipation device, which includes a housing and a rotating shaft disposed within the housing. The housing includes a housing body, a first end cap, a second end cap, and a third end cap 13. The housing body 10 includes a first housing body 101 and a second housing body 102. The first housing body 101 includes a first inner circumferential surface 1011, a second inner circumferential surface 1012, a third inner circumferential surface 1013, and an inner circumferential inclined surface 1010 between adjacent inner circumferential surfaces. The first inner circumferential surface 1011 is annularly disposed on the first housing body 101 and close to the rotating shaft. A housing groove 10111 is also provided on the first inner circumferential surface 1011. The inner diameter of the second inner circumferential surface 1012 is larger than the inner diameter of the first inner circumferential surface 1011 and is annularly disposed on the first housing body 101. The inner diameter of the third inner circumferential surface 1013 is larger than the inner diameter of the second inner circumferential surface 1012 and is annularly disposed on the first housing body 101. The third end cap 13 is also provided with an oil inlet channel 135 and an oil outlet channel 136. One end of the oil inlet channel 135 and the oil outlet channel 136 are respectively connected to the third bearing chamber 131, and the other end is connected to the second housing body 102 and extends out of the second housing body 102. The third bearing chamber 131 is provided with two third bearings 132, a third fixed ring 137 and a third movable ring 138. The third fixed ring 137 is connected to the oil inlet channel 135 and the oil outlet channel 136 respectively. The third fixed ring 137 is fixedly connected to the third bearing chamber 131 and connected to the outer end of the third bearing 132. The third movable ring 138 is fitted on the rotating shaft and connected to the inner end of the third bearing 132. There is a gap between the third fixed ring 137 and the third movable ring 138 for holding the cooling oil entering through the oil inlet channel 135 and flowing into the third bearing 132 to cool it. The rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.
[0025] Example 5, see Figure 5This invention discloses a motor system comprising the aforementioned heat insulation and heat dissipation device 81, a motor 82, and a cooling system 83. A coupling 84 is fixedly connected between the motor 82 and the rotating shaft of the heat insulation and heat dissipation device 81. When the motor rotates, it drives the coupling 84 and the rotating shaft of the heat insulation and heat dissipation device 81 to rotate. The cooling system 83 includes a water cooling system 831 and an air cooling system 832. The water cooling system 831 connects the heat insulation and heat dissipation device 81 and the motor 82 respectively, and circulates cooling air between the heat insulation and heat dissipation device 81 and the motor 82. The water cooling system 831 includes a water chiller, an outlet pipe, a connecting water pipe, and an inlet pipe. The outlet of the water chiller is connected to the outlet pipe. The other end of the water outlet pipe is connected to the water inlet of the motor, and the other end of the connecting pipe is connected to the water outlet of the motor and the water inlet of the heat insulation and heat dissipation device. The water inlet of the water chiller is connected to the water inlet pipe, and the other end of the water inlet pipe is connected to the water outlet of the heat insulation and heat dissipation device, so that the cooling water is cooled by the motor and then enters the heat insulation and heat dissipation device for further cooling before returning to the water chiller for further cooling. The air cooling system 832 includes a blower and a connecting air pipe. One end of the connecting air pipe is connected to the air outlet of the motor, and the other end is connected to the blower. The blower is connected to the air inlet pipe of the heat insulation and heat dissipation device to blow cold air into the interior of the heat insulation and heat dissipation device. The rest is the same as any other embodiment of the present invention or a combination of two or more embodiments.
[0026] Example 6, see Figure 6 This invention discloses a motor system, which includes the aforementioned heat insulation and heat dissipation device 81, a motor 82, a cooling system 83, a coupling 84 between the motor 82 and the heat insulation and heat dissipation device 81, a fan 86, and a support platform 85. The heat insulation and heat dissipation device 81, the motor 82, and the cooling system 83 are respectively mounted and fixed on the support platform 85. The cooling system 83 connects the heat insulation and heat dissipation device 81 and the motor 82 and provides cooling circulation between the heat insulation and heat dissipation device and the motor. A protective cover is provided between the motor 82 and the heat insulation and heat dissipation device 81 and on the outer periphery of the coupling 84. The rest is the same as any other embodiment of this invention or a combination of two or more embodiments.
[0027] The technical solutions of the embodiments of this application will be clearly and completely described above with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is not intended to limit this application or its application or use in any way. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of illustrative purposes and to facilitate understanding and reading by those skilled in the art, and are not intended to limit the implementation conditions of this application. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose achieved by this application, should still fall within the scope of the technical content disclosed in this application. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.
Claims
1. A heat insulating and radiating device, said device comprising a housing and a rotating shaft arranged in the housing, both ends of said rotating shaft extending out of the housing, characterized in that: The shell comprises a shell body, a first end cover arranged at one end of the shell body, a second end cover arranged at the other end of the shell body, and a third end cover arranged in the shell body, the third end cover separating the space in the shell body into a first space close to the first end cover and a second space close to the second end cover; The first end cover is provided with a first through hole slightly larger than the rotating shaft, one end of the rotating shaft passing through the first through hole to the outside of the first end cover; The first through hole is provided with a plurality of axial grooves; The second end cover is provided with a second through hole slightly larger than the rotating shaft, the other end of the rotating shaft passing through the second through hole to the outside of the second end cover; The second through hole is provided with a second bearing chamber and a second bearing arranged in the second bearing chamber and matched with the rotating shaft; The third end cover is provided with a third through hole slightly larger than the rotating shaft, the third through hole being provided with a third bearing chamber and a third bearing arranged in the third bearing chamber and matched with the rotating shaft, the rotating shaft being connected with the third through hole through the third bearing; The part of the rotating shaft in the first space is provided with a plurality of radial heat dissipation holes; The part of the rotating shaft in the second space is provided with a radial air inlet hole; The heat dissipation holes and the air inlet hole are connected through a shaft through hole; The shell body comprises a first shell body and a second shell body, the first shell body comprising a first inner circumferential surface portion, a second inner circumferential surface portion with a different inner diameter from the first inner circumferential surface portion, and an inner circumferential inclined surface portion between the first inner circumferential surface portion and the second inner circumferential surface portion; The second shell body is provided with an air inlet and a plurality of air outlets; The third end cover is provided with a plurality of air outlet holes at the end close to the second inner circumferential surface portion, one of the air outlet holes being provided with an air inlet channel connected with the air inlet of the second shell body.
2. The heat shield and heat sink device of claim 1, wherein: The rotating shaft comprises a plurality of outer circumferential surface portions contained in the outer circumferential surface of the rotating shaft and having different outer diameters, the plurality of outer circumferential surface portions corresponding to the shell.
3. The heat shield and heat sink device of claim 1, wherein: The second shell body comprises a water channel arranged on the outer circumferential surface of the second shell body and a water channel shell covering the water channel, the water channel being arranged around the outer circumferential surface of the second shell body, and the water channel shell being sleeved on the part of the outer circumferential surface of the second shell body with the water channel.
4. The heat shield and heat sink device of claim 1, wherein: The first end cover is provided with a heat insulation groove on the end surface close to the shell body, the heat insulation groove being arranged along the outer circumferential surface of the first end cover to the first through hole of the first end cover, and the heat insulation groove being provided with heat insulation material connected and fixed with the shell body.
5. The heat shield and heat sink device of claim 1, wherein: The second end cover is further provided with a second bearing cover, the second bearing cover being provided with a second bearing through hole slightly larger than the rotating shaft, and the second bearing cover covering the second bearing chamber and being connected with the second end cover.
6. The heat shield and heat sink device of claim 1, wherein: The third end cover is further provided with a third bearing cover, the third bearing cover being provided with a third bearing through hole slightly larger than the rotating shaft, and the third bearing cover covering the third bearing chamber and being connected with the third end cover.
7. The heat shield and heat sink device of claim 1, wherein: The first inner circumferential surface portion of the first shell body is annularly arranged on the first shell body, the first inner circumferential surface portion being close to the rotating shaft and slightly larger than the rotating shaft, and the first inner circumferential surface portion being further provided with a shell groove.
8. The heat shield and heat sink device of claim 1, wherein: The third end cover is provided with an oil inlet channel and an oil outlet channel, the oil inlet channel and the oil outlet channel being connected with the third bearing chamber respectively.
9. An electric machine system characterized by: The motor system comprises the heat insulation and dissipation device, the motor and the cooling system according to any one of claims 1-8, the motor is fixedly connected with the rotating shaft of the heat insulation and dissipation device through a shaft coupling, and the cooling system is connected with the heat insulation and dissipation device and the motor respectively and cools the heat insulation and dissipation device and the motor in circulation.
10. The electric machine system of claim 9, characterized by: The motor system further comprises a support platform, and the heat insulation and dissipation device, the motor and the cooling system are fixedly installed on the support platform respectively.