Bearing heat dissipation structure based on impeller rotor

Abstract

The bearing heat dissipation structure comprises a second fixing support and a second transmission shaft, a bearing frame is fixedly installed on the upper surface of the second fixing support, an extension plate is fixedly installed on the back face of the bearing frame, and a negative pressure induction cooling mechanism is arranged on the upper surface of the extension plate. According to the bearing heat dissipation structure based on the impeller rotor, a negative pressure induction cooling mechanism composed of an annular copper cover, a horn-shaped negative pressure collecting nozzle and a thermal driving valve is arranged, and a super-strong negative pressure area naturally formed at the root of the glass fiber reinforced plastic impeller during rotation is used as a power source, so that the heat dissipation efficiency and thermal load self-adaption are achieved; when the temperature of the second transmission shaft and the bearing rises, heat is transmitted to the heated telescopic block through the third annular copper pipe, the rack and the fixed gear ring are driven to rotate in a meshed mode, and therefore the valve is opened, and negative pressure suction cooling is activated. And after the temperature is reduced, the system is automatically closed, so that accurate temperature self-regulation is realized.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, specifically to a bearing heat dissipation structure based on an impeller rotor. Background Technology

[0002] A ventilator is a fluid machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is an indispensable key device in modern industry and life. Centrifugal ventilators are typical devices that work on the principle of centrifugal force. When the motor drives the impeller to rotate at high speed, the gas enters the center of the impeller axially. In the flow channel between the blades, it is radially thrown towards the volute by centrifugal force. During this process, the gas velocity increases and the kinetic energy increases. Subsequently, the gas decelerates in the volute with a gradually expanding cross section, and some of the kinetic energy is converted into static pressure energy. Finally, it is discharged from the outlet at a higher pressure. When using centrifugal ventilators, relevant heat dissipation operations are required to avoid high temperature affecting the overall working efficiency.

[0003] In the existing technology, the heat dissipation design of centrifugal fans focuses on the thermal management of its drive motor and bearing system, mainly relying on efficient and reliable purely mechanical heat dissipation structures. The most common method is to use an independent centrifugal cooling fan installed coaxially with the main shaft to force air cooling of the motor housing with heat dissipation fins. This significantly increases the heat dissipation area and improves air convection efficiency, thereby quickly removing the heat generated by electromagnetic losses and friction during motor operation.

[0004] However, relying solely on an independent centrifugal cooling fan mounted coaxially with the spindle for heat dissipation results in a heat dissipation efficiency that is rigidly coupled to the spindle speed. This leads to insufficient cooling airflow when the fan is running at low load or low speed, while excessive parasitic power loss and aerodynamic noise may occur at high speed. At the same time, the continuous operation of the cooling fan will also indiscriminately accelerate the aging of the bearing grease, and its increased rotational mass will slightly affect the spindle's start-stop response and dynamic balance stability.

[0005] Furthermore, in real-world operation, the inability to actively remove heat from the bearings and shaft ends by utilizing the heat of the shaft and bearings means that the heat dissipation design can only rely on additional rotating components, such as cooling fans, which consume extra power to drive the cooling airflow. This makes it impossible to provide immediate, strong, and directional suction cooling capacity at low speeds or sudden changes in heat load. Consequently, heat easily accumulates at the bearings and shaft ends, forming localized high-temperature points, accelerating lubrication failure and material fatigue, and severely limiting the reliability and lifespan of the fan under varying operating conditions or extreme thermal environments. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a bearing heat dissipation structure based on an impeller rotor, which has the advantage of actively removing heat from the shaft and bearing by utilizing the heat from the shaft and bearing, thus solving the problems mentioned in the background technology.

[0007] The present invention provides the following technical solution: a bearing heat dissipation structure based on an impeller rotor, comprising a fixed bracket two and a transmission shaft two, wherein a receiving frame is fixedly installed on the upper surface of the fixed bracket two, an extension plate is fixedly installed on the back of the receiving frame, and a negative pressure induction cooling mechanism is provided on the upper surface of the extension plate. The negative pressure induction cooling mechanism is provided with a power conversion mechanism at its power output end that converts heat into inductive expansion force; the power conversion mechanism is provided with a switching mechanism at its power output end that converts driving force into control force. The negative pressure induction cooling mechanism consists of a power conversion mechanism and a switching mechanism.

[0008] Preferably, the power conversion mechanism includes a connecting plate, an annular copper cover, an annular copper tube one, a valve, an annular copper tube two, a horn-shaped negative pressure collecting nozzle, and heat dissipation fins. The lower surface of the connecting plate is fixedly installed on the upper surface of the extension plate. The outer surface of the annular copper cover is fixedly connected to one side of the connecting plate. The interior of the connecting plate is fitted and connected to the outer surface of the transmission shaft two, and is insulated and fixed to a stationary component. One side of the multiple sets of heat dissipation fins is fixedly connected to the outer surface of the annular copper cover. One end of the annular copper tube one is fixedly connected to the front of the annular copper cover. The air inlet end of the valve is fixedly installed to the other end of the annular copper tube one. One end of the annular copper tube two is fixedly installed to the air outlet end of the valve. The temporal part of the horn-shaped negative pressure collecting nozzle is fixedly installed to the other end of the annular copper tube two.

[0009] Preferably, the switching mechanism includes an annular copper tube, a limiting plate, a heat-sensitive expansion block, a connecting frame, a rack, a control rod, and a fixed gear ring. The back of the limiting plate is fixedly installed on the front of the extension plate. The outer surface of the heat-sensitive expansion block is installed inside the limiting plate. One end of the annular copper tube is fixedly installed on the top of the heat-sensitive expansion block. The upper left surface of the connecting frame is fixedly installed on the lower surface of the heat-sensitive expansion block. The bottom of the rack is fixedly connected to the upper right surface of the connecting frame. The outer surface of the fixed gear ring meshes with the front of the rack. The outer surface of the control rod is fixedly installed inside the fixed gear ring.

[0010] Preferably, one end of the control rod is internally connected to the valve, and the outer surface of one end of the annular copper tube three is fixedly installed inside the annular copper tube one.

[0011] Preferably, spring shock absorbers are fixedly installed on both sides of the lower surface of the second fixed bracket, and a first fixed bracket is fixedly installed on one end of each spring shock absorber.

[0012] Preferably, a motor mount is fixedly installed on the left side of the upper surface of the second fixed bracket, and a drive motor is installed on the upper surface of the motor mount.

[0013] Preferably, the output shaft of the drive motor is fixedly connected to a transmission shaft one via a coupling. A pulley one is fixedly mounted on the outer surface of the transmission shaft one. A transmission belt is driven and mounted on the outer surface of the pulley one. A pulley two is driven and mounted on the inner ring of the transmission belt. The interior of the pulley two is fixedly mounted to the outer surface of the transmission shaft two.

[0014] Preferably, a bearing seat is fixedly installed on the rear side of the upper surface of the extension plate, and the interior of the bearing seat is fitted to the outer surface of the second transmission shaft.

[0015] Preferably, a fiberglass housing is fixedly installed on the upper surface of the second fixed bracket, an air outlet is provided at the top of the fiberglass housing, and an air inlet hood is provided inside the front of the fiberglass housing.

[0016] Preferably, a fiberglass impeller is provided on the outer surface of one end of the second drive shaft, and the ultra-strong negative pressure zone at the root is aligned with the horn-shaped negative pressure collection nozzle. A horizontal plate is fixedly installed on the upper surface of the second fixed bracket, and the upper surface of the horizontal plate is fixedly installed on the lower surface of the fiberglass housing.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This bearing heat dissipation structure based on an impeller rotor utilizes a negative pressure induction cooling mechanism consisting of an annular copper cover, a horn-shaped negative pressure collection nozzle, and a heat-driven valve. It leverages the naturally formed ultra-strong negative pressure zone at the root of the rotating fiberglass impeller as a power source, achieving adaptive heat dissipation efficiency and heat load. When the temperature of the drive shaft and bearing rises, heat is transferred to the heat-sensitive expansion block through the annular copper tube, driving the rack and fixed gear ring to mesh and rotate, thereby opening the valve and activating negative pressure suction cooling. The system automatically shuts down after the temperature drops, achieving precise temperature self-regulation. Furthermore, the entire heat dissipation process does not rely on additional electric or rotating components, fully utilizing the fan's own aerodynamic energy, reducing operating energy consumption and avoiding the additional noise, vibration, and power loss problems associated with traditional coaxial cooling fans.

[0018] 2. This bearing heat dissipation structure based on the impeller rotor tightly surrounds the bearing area of ​​the second drive shaft with an annular copper cover. The heat dissipation fins on its outer surface enhance heat conduction. Combined with the directional strong airflow generated by negative pressure, it can efficiently remove the heat accumulated near the bearing housing, prevent the formation of local high temperature points, thereby extending the bearing grease life and reducing material thermal fatigue, as well as improving the operational reliability and overall life of the centrifugal fan in harsh industrial environments such as variable operating conditions or high temperature and high dust. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 For the present invention Figure 1A top-view structural diagram; Figure 3 For the present invention Figure 1 Internal structure diagram; Figure 4 For the present invention Figure 1 A schematic diagram of the rear view structure; Figure 5 For the present invention Figure 1 A partial structural diagram; Figure 6 For the present invention Figure 5 A schematic diagram of the side view structure; Figure 7 For the present invention Figure 6 An enlarged schematic diagram of the structure at point A.

[0020] In the diagram: 1. Fixed bracket one; 2. Spring shock absorber; 3. Fixed bracket two; 4. Motor base; 5. Drive motor; 6. Drive shaft one; 7. Pulley one; 8. Drive belt; 9. Pulley two; 10. Drive shaft two; 11. Bearing housing; 12. Fiberglass casing; 13. Air outlet; 14. Air inlet hood; 15. Fiberglass impeller; 16. Support frame; 17. Horizontal plate; 18. Extension plate; 19. Connecting plate; 20. Annular copper cover; 21. Annular copper pipe one; 22. Valve; 23. Annular copper pipe two; 24. Horn-shaped negative pressure collection nozzle; 25. Annular copper pipe three; 26. Limiting plate; 27. Heat-sensitive expansion block; 28. Connecting frame; 29. ​​Rack; 30. Control rod; 31. Fixed gear ring; 32. Heat dissipation fins. Detailed Implementation

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

[0022] Please see Figure 1 , Figure 5 and Figure 7 A bearing heat dissipation structure based on an impeller rotor includes a fixed bracket 2 3 and a transmission shaft 2 10. A support frame 16 is fixedly installed on the upper surface of the fixed bracket 2 3, and an extension plate 18 is fixedly installed on the back of the support frame 16. A negative pressure induction cooling mechanism is provided on the upper surface of the extension plate 18. The negative pressure induction cooling mechanism is equipped with a power conversion mechanism at its power output end that converts heat into inductive expansion force; the power conversion mechanism is equipped with a switching mechanism at its power output end that converts driving force into control force. The negative pressure induction cooling mechanism consists of a power conversion mechanism and a switching mechanism. The power conversion mechanism includes a connecting plate 19, an annular copper cover 20, an annular copper tube 1 21, a valve 22, an annular copper tube 23, a horn-shaped negative pressure collecting nozzle 24, and heat dissipation fins 32. The lower surface of the connecting plate 19 is fixedly installed on the upper surface of the extension plate 18. The outer surface of the annular copper cover 20 is fixedly connected to one side of the connecting plate 19. The interior of the connecting plate 19 is fitted and connected to the outer surface of the transmission shaft 2 10 and is insulated and fixed to a stationary part. One side of the multiple sets of heat dissipation fins 32 is fixedly connected to the outer surface of the annular copper cover 20. One end of the annular copper tube 1 21 is fixedly connected to the front of the annular copper cover 20. The air inlet end of the valve 22 is fixedly installed on the other end of the annular copper tube 1 21. One end of the annular copper tube 23 is fixedly installed on the air outlet end of the valve 22. The temporal part of the horn-shaped negative pressure collecting nozzle 24 is fixedly installed on the other end of the annular copper tube 23.

[0023] Specifically, the negative pressure induction cooling mechanism collects negative pressure through a horn-shaped negative pressure collection nozzle 24. It then uses components such as annular copper tube 21, valve 22, and annular copper tube 23, along with annular copper cover 20, to conduct heat. Multiple sets of heat dissipation fins 32 further increase the heat dissipation area, enabling rapid and effective heat dissipation. This improves heat dissipation efficiency, ensures stability and reliability during long-term operation, and extends the device's service life. The connecting plate 19 and the extension plate 18 are fixedly installed to provide stable support for the entire power conversion mechanism. The annular copper cover 20 is connected to the connecting plate 19, and the interior of the connecting plate 19 is fitted and insulated against the outer surface of the second drive shaft 10 and fixed to the stationary part. This allows the heat generated by the second drive shaft 10 to be quickly conducted to the annular copper cover 20. Multiple sets of heat dissipation fins 32 are fixedly connected to the outer surface of the annular copper cover 20, increasing the heat dissipation area and quickly dissipating the heat on the annular copper cover 20 to the surrounding environment, effectively reducing the temperature generated by the operation of the drive shaft and ensuring the stable operation of the ventilator. The horn-shaped negative pressure collection nozzle 24 is connected to the annular copper cover 20 through the second annular copper pipe 23, the valve 22, and the first annular copper pipe 21. The horn-shaped negative pressure collection nozzle 24 can collect heat from the surrounding environment. Negative pressure creates airflow, causing air to flow within the annular copper tube. This accelerates the transfer of heat from the annular copper cover 20 to the outside, forming a good heat dissipation cycle and further enhancing the heat dissipation effect. It is especially suitable for heat dissipation needs under long-term high-load operation. Furthermore, valve 22 is located between annular copper tube 1 21 and annular copper tube 23. By adjusting the opening of valve 22, the flow rate and velocity of the airflow within the annular copper tube can be controlled. Under different working conditions, valve 22 can be flexibly adjusted according to the actual amount of heat generated, achieving precise control of heat dissipation intensity, avoiding excessive heat dissipation and energy waste, and ensuring that the operating temperature remains within a suitable range under different working conditions.

[0024] Please see Figure 5 , Figure 6 and Figure 7 The switching mechanism includes annular copper tube 25, a limiting plate 26, a heat-sensitive expansion block 27, a connecting frame 28, a rack 29, a control rod 30, and a fixed gear ring 31. The back of the limiting plate 26 is fixedly installed with the front of the extension plate 18. The outer surface of the heat-sensitive expansion block 27 is installed with the interior of the limiting plate 26. One end of the annular copper tube 25 is fixedly installed with the top of the heat-sensitive expansion block 27. The upper left surface of the connecting frame 28 is fixedly installed with the lower surface of the heat-sensitive expansion block 27. The bottom of the rack 29 is fixedly connected with the upper right surface of the connecting frame 28. The outer surface of the fixed gear ring 31 meshes with the front of the rack 29. The outer surface of the control rod 30 is fixedly installed with the interior of the fixed gear ring 31. One end of the control rod 30 is connected to the interior of the valve 22. One end of the outer surface of the annular copper tube 25 is fixedly installed with the interior of the annular copper tube 21.

[0025] Specifically, the heat-sensitive expansion block 27 is installed inside the limiting plate 26. When the heat conducted from the power conversion mechanism causes the temperature of the annular copper tube 25 to rise, the heat-sensitive expansion block 27 can sensitively sense the temperature change and expand or contract. This allows the switching mechanism to react promptly according to the actual heat generated by the fan, avoiding insufficient or excessive heat dissipation due to untimely response, and effectively ensuring that the fan operates in a suitable temperature environment. When the heated expansion block 27 extends or retracts, it drives the connecting frame 28 to move up and down, which in turn causes the rack 29 to move accordingly. The rack 29 meshes with the fixed gear ring 31, converting linear motion into rotational motion. Finally, through the control rod 30, the internal control connection of the valve 22 is realized. This accurately converts the extension and retraction of the heated expansion block 27 into control of the opening of the valve 22, ensuring that the heat dissipation system can work according to the preset logic. One end of the annular copper tube 25 is fixedly installed on the top of the heated expansion block 27, and the outer surface of the other end is fixedly installed inside the annular copper tube 21, so that the switching mechanism and the power conversion mechanism are closely connected. This allows the heat to be directly obtained from the heat transfer mechanism. Furthermore, by controlling the valve 22, the flow rate and velocity of the air in the power conversion mechanism are adjusted, forming a good working relationship with the entire heat dissipation system, further optimizing the heat dissipation effect and improving the heat dissipation efficiency.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4Spring shock absorbers 2 are fixedly installed on both sides of the lower surface of the fixed bracket 2 3. A fixed bracket 1 is fixedly installed at one end of each spring shock absorber 2. A motor base 4 is fixedly installed on the left side of the upper surface of the fixed bracket 2 3. A drive motor 5 is installed on the upper surface of the motor base 4. The output shaft of the drive motor 5 is fixedly connected to a transmission shaft 6 via a coupling. A pulley 7 is fixedly installed on the outer surface of the transmission shaft 6. A transmission belt 8 is driven onto the outer surface of the pulley 7. A pulley 9 is driven onto the inner ring of the transmission belt 8. The interior of the pulley 9 is fixedly installed to the outer surface of the transmission shaft 2 10, extending... A bearing seat 11 is fixedly installed on the rear side of the upper surface of plate 18. The interior of bearing seat 11 is fitted to the outer surface of drive shaft 10. A fiberglass housing 12 is fixedly installed on the upper surface of fixed bracket 3. An air outlet 13 is provided at the top of fiberglass housing 12. An air inlet shroud 14 is provided inside the front of fiberglass housing 12. A fiberglass impeller 15 is provided on the outer surface of one end of drive shaft 10. The ultra-strong negative pressure zone at the root is aligned with the horn-shaped negative pressure collection nozzle 24. A horizontal plate 17 is fixedly installed on the upper surface of fixed bracket 3. The upper surface of the horizontal plate 17 is fixedly installed to the lower surface of fiberglass housing 12.

[0027] Specifically, spring shock absorbers 2 are fixedly installed on both sides of the lower surface of the fixed bracket 2 3. One end of the spring shock absorber 2 is connected to the fixed bracket 1. During the operation of the centrifugal fan, vibration is inevitable. The spring shock absorber 2 can effectively absorb and buffer this vibration energy, reduce the impact of vibration on the overall structure of the fan and surrounding equipment, reduce the probability of component loosening and damage caused by vibration, extend the service life of the fan, and also reduce operating noise and improve the working environment. The drive motor 5 is installed on the motor base 4, and its output shaft is fixedly connected to the transmission shaft 6 through a coupling. The transmission shaft 6 is equipped with a pulley 7, which is connected to the pulley 2 9 through the transmission belt 8. The pulley 2 9 is fixedly installed to the transmission shaft 2 10. This transmission method has a certain degree of elasticity and can buffer the impact force during power transmission to a certain extent, ensuring the smoothness of power transmission. A bearing seat 11 is fixedly installed on the rear side of the upper surface of the extension plate 18. The bearing seat 11 is fitted to the outer surface of the transmission shaft 10. The bearing seat 11 provides precise support and positioning for the transmission shaft 10, ensuring that the transmission shaft 10 maintains a stable axial and radial position during high-speed rotation, reducing friction and vibration caused by shaft misalignment, improving the stability and reliability of the fan operation, and also helping to improve the rotational accuracy of the fiberglass impeller 15, ensuring the ventilation efficiency of the fan. A fiberglass housing 12 is fixedly installed on the upper surface of the fixed bracket 3. An air outlet 13 is located at the top of the steel casing 12, and an air inlet shroud 14 is located inside the front. A fiberglass impeller 15 is installed on the outer surface of one end of the drive shaft 10, and the ultra-strong negative pressure zone at the root of the fiberglass impeller 15 is aligned with the trumpet-shaped negative pressure collection nozzle 24. This allows air to smoothly enter the casing from the air inlet shroud 14, form an airflow under the rotation of the fiberglass impeller 15, and be discharged through the air outlet 13, achieving efficient ventilation. At the same time, the alignment of the trumpet-shaped negative pressure collection nozzle 24 with the ultra-strong negative pressure zone can better collect negative pressure, enhance the fan's suction capacity, and improve the ventilation effect. Furthermore, a horizontal plate 17 is fixedly installed on the upper surface of the fixed bracket 2 3. The upper surface of the horizontal plate 17 is fixedly installed on the lower surface of the fiberglass casing 12. The horizontal plate 17 plays a role in strengthening the connection between the fixed bracket 2 3 and the fiberglass casing 12, making the entire fan structure more stable and able to withstand various forces generated during the operation of the fan, such as wind force and vibration force, preventing the casing from shaking or shifting, and ensuring the normal operation and safety of the fan.

[0028] Working principle: During use, the drive motor 5 is powered on and starts. Its output shaft drives the transmission shaft 6 to rotate via a coupling. The pulley 7 fixed on the transmission shaft 6 transmits power to the pulley 9 via the transmission belt 8, thereby driving the transmission shaft 10 and the fiberglass impeller 15 fixed at its end to rotate at high speed inside the fiberglass casing 12. When the fiberglass impeller 15 rotates, air is axially drawn into the center of the impeller from the air inlet shroud 14. The gas gains kinetic energy in the blade flow channel and is radially thrown out under the action of centrifugal force, entering the flow channel of the gradually expanding cross section of the fiberglass casing 12. Inside this volute, the gas velocity decreases, and the kinetic energy is converted into static pressure energy, finally forming an airflow with a certain pressure that is discharged from the air outlet 13, completing the ventilation or process task. During operation, the bearings in the drive shaft 210 and bearing housing 11 generate heat due to friction. This heat is first conducted to the annular copper cover 20, which is tightly surrounded by the shaft system but insulated and fixed. The heat dissipation fins 32 on the outer surface of the annular copper cover 20 increase the heat exchange area. At the same time, some heat is transferred to the annular copper tube 35 through the medium in the annular copper tube 11 and acts on the heat-sensitive expansion block 27. The heat-sensitive expansion block 27 is usually made of materials with a high coefficient of thermal expansion, such as paraffin wax. After being heated, its volume expands. The thrust generated by the expansion of the heat-sensitive expansion block 27 drives the connecting frame 28 and rack 29 fixed on its lower surface to move downward. The rack 29 meshes with the fixed fixed gear ring 31, converting linear motion into rotational motion, thereby driving the control lever 30 to rotate. The rotation of the control lever 30 When the direct-drive valve 22 is switched from the closed state to the open state, the internal cavity of the annular copper cover 20 is connected to the horn-shaped negative pressure collection nozzle 24 through the annular copper tube 1 21, valve 22, and annular copper tube 23. The horn-shaped negative pressure collection nozzle 24 is precisely aligned with the ultra-strong negative pressure zone at the root of the fiberglass impeller 15 blades. At this time, the strong negative pressure generated by the impeller rotation forms a high-speed suction airflow through the open channel. This airflow continuously and forcibly draws out the hot air from the bearing and shaft end area surrounded by the annular copper cover 20, and finally discharges it into the main airflow of the fan through the pipeline. When the shaft temperature drops, the heat-extension block 27 cools and contracts, driving the control rod 30 to rotate in the opposite direction through the transmission mechanism, causing the valve 22 to gradually close and the system to stop working.

[0029] In the actual configuration of this invention, the spring damper 2 can be a damping spring damper as per the JB / T10486-2004 standard; the drive motor 5 is a high-efficiency three-phase asynchronous motor such as the YE3 series, matched with corresponding power and pole number; the fiberglass impeller 15 is molded from epoxy resin-based composite material and dynamically balanced; the annular copper cover 20, annular copper tube one 21, annular copper tube two 23, and annular copper tube three 25 are all made of T2 pure copper tubing by bending and welding to ensure thermal conductivity; the valve 22 is a custom-made brass conical shut-off valve; the horn-shaped negative pressure collecting nozzle 24 is a 304 stainless steel spun product to resist airflow erosion; the core of the heat-sensitive expansion block 27 is encapsulated with high-expansion paraffin wax with a specific phase change temperature, such as 60°C, and the exterior is protected by an aluminum alloy shell. The heat dissipation fins 32 are made of aluminum-copper composite rolled fins to optimize heat dissipation. In terms of power supply, only the drive motor 5 needs to be connected to a three-phase industrial power supply. The entire negative pressure induction cooling mechanism does not require independent power supply, and its linkage operation is completely autonomous: when the drive motor 5 drives the fiberglass impeller 15 to rotate and generate a negative pressure source, the heat of the shaft system is conducted through the annular copper cover 20 and the heat dissipation fins 32, and the heat-conducting medium in the annular copper tube 25 activates the expansion of the heated expansion block 27, which pushes the mechanical transmission chain to open the valve 22. The hot air in the annular copper cover 20 is then forcefully drawn away by the impeller negative pressure precisely captured by the trumpet-shaped negative pressure collecting nozzle 24 through the annular copper tube 21, valve 22, and annular copper tube 23, thus forming an adaptive heat dissipation cycle that does not require external electrical control.

[0030] It should be noted that the scope of protection of this invention does not involve improvements to the internal structure and methods; furthermore, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing heat dissipation structure based on an impeller rotor, characterized in that: It includes a fixed bracket two (3) and a transmission shaft two (10). A support frame (16) is fixedly installed on the upper surface of the fixed bracket two (3). An extension plate (18) is fixedly installed on the back of the support frame (16). A negative pressure sensing cooling mechanism is provided on the upper surface of the extension plate (18). The negative pressure induction cooling mechanism is provided with a power conversion mechanism at its power output end that converts heat into inductive expansion force; the power conversion mechanism is provided with a switching mechanism at its power output end that converts driving force into control force. The negative pressure induction cooling mechanism consists of a power conversion mechanism and a switching mechanism.

2. The bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: The power conversion mechanism includes a connecting plate (19), an annular copper cover (20), an annular copper tube one (21), a valve (22), an annular copper tube two (23), a horn-shaped negative pressure collection nozzle (24), and heat dissipation fins (32). The lower surface of the connecting plate (19) is fixedly installed on the upper surface of the extension plate (18). The outer surface of the annular copper cover (20) is fixedly connected to one side of the connecting plate (19). The interior of the connecting plate (19) is fitted and connected to the outer surface of the transmission shaft two (10), and is absolutely The edge is fixed to the stationary component, one side of the multiple sets of heat dissipation fins (32) is fixedly connected to the outer surface of the annular copper cover (20), one end of the annular copper tube (21) is fixedly connected to the front of the annular copper cover (20), the air inlet end of the valve (22) is fixedly installed to the other end of the annular copper tube (21), one end of the annular copper tube (23) is fixedly installed to the air outlet end of the valve (22), and the temporal part of the horn-shaped negative pressure collection nozzle (24) is fixedly installed to the other end of the annular copper tube (23).

3. The bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: The switching mechanism includes a ring copper tube (25), a limiting plate (26), a heat-sensitive expansion block (27), a connecting frame (28), a rack (29), a control rod (30), and a fixed gear ring (31). The back of the limiting plate (26) is fixedly installed on the front of the extension plate (18). The outer surface of the heat-sensitive expansion block (27) is installed inside the limiting plate (26). One end of the ring copper tube (25) is fixedly installed on the top of the heat-sensitive expansion block (27). The upper left surface of the connecting frame (28) is fixedly installed on the lower surface of the heat-sensitive expansion block (27). The bottom of the rack (29) is fixedly connected to the upper right surface of the connecting frame (28). The outer surface of the fixed gear ring (31) meshes with the front of the rack (29). The outer surface of the control rod (30) is fixedly installed inside the fixed gear ring (31).

4. The bearing heat dissipation structure based on an impeller rotor according to claim 3, characterized in that: One end of the control rod (30) is connected to the internal control of the valve (22), and the outer surface of one end of the annular copper tube three (25) is fixedly installed inside the annular copper tube one (21).

5. The bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: Both sides of the lower surface of the fixed bracket two (3) are fixedly installed with spring shock absorbers (2), and one end of the spring shock absorber (2) is fixedly installed with fixed bracket one (1).

6. The bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: A motor mount (4) is fixedly installed on the left side of the upper surface of the fixed bracket (3), and a drive motor (5) is installed on the upper surface of the motor mount (4).

7. A bearing heat dissipation structure based on an impeller rotor according to claim 6, characterized in that: The output shaft of the drive motor (5) is fixedly connected to a transmission shaft (6) via a coupling. A pulley (7) is fixedly installed on the outer surface of the transmission shaft (6). A transmission belt (8) is installed on the outer surface of the pulley (7). A pulley (9) is installed on the inner ring of the transmission belt (8). The interior of the pulley (9) is fixedly installed on the outer surface of the transmission shaft (10).

8. The bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: A bearing seat (11) is fixedly installed on the rear side of the upper surface of the extension plate (18), and the interior of the bearing seat (11) is fitted to the outer surface of the transmission shaft (10).

9. A bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: A fiberglass housing (12) is fixedly installed on the upper surface of the fixed bracket (3). An air outlet (13) is provided at the top of the fiberglass housing (12). An air inlet hood (14) is provided inside the front of the fiberglass housing (12).

10. A bearing heat dissipation structure based on an impeller rotor according to claim 1, characterized in that: A fiberglass impeller (15) is provided on the outer surface of one end of the transmission shaft two (10), and the ultra-strong negative pressure zone at the root is aligned with the horn-shaped negative pressure collection nozzle (24). A horizontal plate (17) is fixedly installed on the upper surface of the fixed bracket two (3), and the upper surface of the horizontal plate (17) is fixedly installed on the lower surface of the fiberglass housing (12).

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