Efficient liquid cooling heat dissipation vane pump

Abstract

The invention discloses an efficient liquid cooling heat dissipation vane pump, and relates to the technical field of vane pumps, an independent motor drives a fan blade to directly blow a heat dissipation piece for heat dissipation, the problem that the load of a rotating shaft is directly increased due to the fact that a traditional fan blade is connected with the rotating shaft can be avoided, the energy consumption of rotating shaft driving and the rotating shaft sealing cost can be remarkably reduced, and meanwhile, the efficiency is improved. By arranging the magnetic connecting mechanism, the fan blades can drive the piston type liquid pumping mechanism to operate in the rotating process, directional circulating flow of cooling liquid between the rotating shaft rotating connecting position and the heat dissipation piece is achieved, the heat dissipation path can be effectively shortened, heat resistance is reduced, the heat dissipation efficiency can be greatly improved, and the heat dissipation effect is improved. And precise heat dissipation of the rotating connection position of the rotating shaft is achieved, the service life of the vane pump is prolonged, and the operation stability of the vane pump is improved.

Description

Technical Field

[0001] This invention relates to the field of vane pump technology, and in particular to a high-efficiency liquid-cooled heat dissipation vane pump. Background Technology

[0002] A vane pump is a common type of positive displacement pump. It has advantages such as compact structure, uniform flow, and low noise. It is widely used in engineering machinery, various hydraulic systems, and cooling systems of new energy vehicles. During high-speed operation, the vane pump generates intense friction between the shaft and supporting components such as bearings, which in turn accumulates a large amount of heat.

[0003] To address the heat dissipation issue during the efficient operation of vane pumps, existing technologies generally employ a solution of adding a cooling fan to the end of the shaft. In this approach, the fan is directly driven by the shaft, which increases the load on the shaft during heat dissipation. This requires the prime mover to expend more energy to drive the fan, increasing not only the driving energy consumption of the vane pump but also the sealing cost at the shaft location. Furthermore, this air-cooling method provides only a rough cooling of the entire pump casing, making it difficult to precisely and efficiently dissipate heat at the joint between the shaft and bearings. Heat must be conducted through multiple components to be carried away from the outer casing, resulting in a long heat dissipation path and high thermal resistance. This leads to low heat dissipation efficiency at the shaft connection, which can negatively impact the actual heat dissipation effect during shaft operation. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that the rotor shaft of the vane pump has low heat dissipation efficiency during operation, which leads to increased energy consumption and affected service life. The invention proposes a high-efficiency liquid-cooled vane pump.

[0005] To address the problems existing in the prior art, the present invention adopts the following technical solution: A high-efficiency liquid-cooled heat dissipation vane pump includes a pump casing, with a first end cover and a second end cover fixedly installed at both ends of the pump casing. A rotating shaft located inside the pump casing is rotatably installed between the first and second end covers. A heat dissipation component is fixedly installed on the outer side of the first end cover, and a protective cover is fixedly installed on the outer side of the heat dissipation component. A motor is fixedly installed inside the protective cover, and a fan blade is fixedly installed on the drive shaft of the motor. The motor drives the fan blade to blow airflow directly onto the heat dissipation component to accelerate heat dissipation. A piston-type pumping mechanism is installed inside the heat dissipation component. A third channel is opened inside the second end cover and surrounds the outer side of the rotating shaft. A pipe joint is fixed on the first end cover and arranged side by side. Two fourth channels are opened side by side inside the end wall of the pump casing, connecting the two ends of the third channel and the two pipe joints. The third channel is connected to the piston-type pumping mechanism through the pipe joints and the fourth channel. A magnetic connection mechanism is provided between the fan blade and the piston-type pumping mechanism. The fan blade drives the piston-type pumping mechanism to start through the magnetic connection mechanism, circulating and pumping the coolant in the third channel.

[0006] Preferably, the heat sink includes a circular plate that fits tightly against the first end cover, and a protruding cylinder is fixedly installed at the middle position of the circular plate. Arc-shaped plates that are evenly distributed around the cylinder are fixedly installed on the circular plate, and the connection between the circular plate and the cylinder is set as an arc-shaped chamfer.

[0007] Preferably, the piston-type pump mechanism includes a circular frame installed inside a cylinder, and a chamber is formed inside the circular frame. An inlet is formed on one side of the chamber, and an outlet is formed on the other side of the chamber. A one-way valve is installed in both the inlet and the outlet. A piston block is slidably installed in the chamber. The magnetic connection mechanism includes a first magnet fixedly installed on the piston block, a second magnet that is magnetically repelled by the first magnet, and a third magnet that is magnetically repelled by the first magnet, all fixedly installed on the fan blade.

[0008] Preferably, multiple chambers are provided, which are distributed around the circular frame. A connecting cavity is provided between the multiple chambers in the circular frame. The liquid inlet communicates with the connecting cavity. A first channel is provided between a pipe connector on the first end cap and the connecting cavity. A second channel is provided between another pipe connector on the first end cap and the multiple liquid outlets.

[0009] Preferably, the second channel is arranged around the circular frame, and the first and second channels are opened on the two end walls where the first end cover and the circular plate fit together. With the help of the coolant filled in the first and second channels, the efficiency of heat transfer from the first end cover to the circular plate is improved.

[0010] Preferably, only one second magnet is provided, and multiple third magnets are provided. The second magnet and multiple third magnets are distributed around the middle position of the fan blade. During rotation, the short-term repulsion and long-term attraction of the first magnet by the second magnet and multiple third magnets prolong the residence time of the coolant in the chamber, so that the coolant can fully exchange heat.

[0011] Preferably, the fourth channel is S-shaped and evenly distributed within the end wall of the pump casing. The coolant circulates within the fourth channel, increasing the heat exchange area of ​​the coolant.

[0012] Preferably, a groove corresponding to the pipe connector is provided at the end of the pump casing. The groove is recessed inside the pump casing. The connection surface of the pipe connector and the fourth channel is offset from the connection surface of the pump casing and the first end cover through the groove. The pipe connector and the groove are located at the lower part of the pump casing.

[0013] Preferably, a magnetic isolation valve is installed inside the cylinder between the first magnet, the second magnet, and the third magnet. The magnetic isolation valve includes a first magnetic isolation plate and a second magnetic isolation plate that is coaxially rotated and fitted with the first magnetic isolation plate. The first magnetic isolation plate has a first through hole distributed around it, and the second magnetic isolation plate has a second through hole that is offset from the first through hole. A bimetallic strip is connected between the first magnetic isolation plate and the second magnetic isolation plate.

[0014] Preferably, the circular frame is slidably inserted into the cylinder, and both the first and second magnetic shielding plates are provided with slots that are adapted to the two ends of the bimetallic strip, and the bimetallic strip is engaged in the slots.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the fan blades are driven by an independent motor to directly blow heat onto the heat sink, which avoids the problem of the traditional fan blades being connected to the shaft, thus directly increasing the load on the shaft. This significantly reduces the energy consumption of the shaft drive and the cost of shaft sealing. At the same time, by setting a magnetic connection mechanism, the fan blades can drive the piston pump mechanism to operate during rotation, realizing the directional circulation of coolant between the shaft rotation connection position and the heat sink. This can effectively shorten the heat dissipation path and reduce thermal resistance, which not only greatly improves the heat dissipation efficiency, but also helps to achieve precise heat dissipation at the shaft rotation connection position, thus extending the service life and operational stability of the vane pump. 2. In this invention, the heat sink adopts a design combining a circular plate and multiple arc-shaped plates distributed around it, and the arc-shaped chamfer is set at the connection position of the cylinder and the circular plate. This not only effectively increases the heat dissipation surface area, but also optimizes the airflow path, making the air cooling heat dissipation more uniform. 3. In this invention, by placing the magnetic isolation valve between the first magnet, the second magnet, and the third magnet, and by utilizing the bending changes of the bimetallic strip at different temperatures, the overlap between the first and second through holes is automatically adjusted. By controlling the strength of the magnetic field, the movement amplitude of the piston block in the chamber is automatically adjusted, thereby achieving adaptive adjustment of the pump fluid flow rate. This allows the device to flexibly adjust the motor load and power consumption according to the actual heat dissipation requirements during operation, which is beneficial for saving energy at low temperatures and automatically improving the heat dissipation effect at high temperatures, thus conveniently achieving the goal of energy-saving and efficient heat dissipation. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is an exploded view of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 For the present invention Figure 3 Sectional view at point AA; Figure 5 For the present invention Figure 3 Sectional view at point BB; Figure 6 This is a perspective view of the heat dissipation component of the present invention; Figure 7 This is a perspective view of the fan blade, the second magnet, and the third magnet of the present invention; Figure 8 This is a rear view of the piston-type pump mechanism of the present invention; Figure 9 This is an exploded view of the heat dissipation component, the piston-type pump mechanism, and the magnetically shielded valve of the present invention. Figure 10 This is a front view of the magnetic isolation valve of the present invention; Figure 11 This is an exploded view of the magnetic isolation valve of the present invention.

[0017] In the picture: 1. Pump casing; 11. First end cover; 12. Second end cover; 13. Shaft; 2. Heat sink; 21. Circular plate; 22. Cylindrical tube; 23. Arc-shaped plate; 24. Arc-shaped chamfer; 3. Protective cover; 31. Motor; 32. Fan blades; 4. Circular frame; 41. Chamber; 42. Liquid inlet; 43. Liquid outlet; 44. Check valve; 45. Piston block; 46. Connecting cavity; 47. First channel; 48. Second channel; 5. Third channel; 51. Pipe fitting; 52. Fourth channel; 53. Groove; 6. First magnet; 61. Second magnet; 62. Third magnet; 7. Magnetic shielding valve; 71. First magnetic shielding plate; 72. Second magnetic shielding plate; 73. First through hole; 74. Second through hole; 75. Bimetallic strip; 76. Slot; 8. Liquid inlet port; 81. Liquid outlet port. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example: This example provides a high-efficiency liquid-cooled heat dissipation vane pump, see [link / reference]. Figure 1 - Figure 11Specifically, the pump includes a pump housing 1, with a first end cover 11 and a second end cover 12 fixedly installed at both ends. A rotating shaft 13 located inside the pump housing 1 is rotatably installed between the first end cover 11 and the second end cover 12. A heat sink 2 is fixedly installed on the outside of the first end cover 11, and a protective cover 3 is fixedly installed on the outside of the heat sink 2. A motor 31 is fixedly installed inside the protective cover 3, and a fan blade 32 is fixedly installed on the drive shaft of the motor 31. The motor 31 drives the fan blade 32 to blow air directly onto the heat sink 2 to accelerate heat dissipation. A piston-type pumping mechanism is installed inside the heat sink 2. The end cap 12 has a third channel 5 that surrounds the outside of the rotating shaft 13. The first end cap 11 has pipe joints 51 arranged side by side. The pump housing 1 has two fourth channels 52 arranged side by side that connect the two ends of the third channel 5 and the two pipe joints 51. The third channel 5 is connected to the piston pump mechanism through the pipe joints 51 and the fourth channel 52. A magnetic connection mechanism is provided between the fan blade 32 and the piston pump mechanism. The fan blade 32 drives the piston pump mechanism to start through the magnetic connection mechanism, and pumps the coolant in the third channel 5 in a circulating manner.

[0020] When the device is in use, the rotating shaft 13 inside the pump housing 1 generates a large amount of frictional heat when rotating at high speed. This makes the rotational connection between the rotating shaft 13 and the first end cover 11 and the second end cover 12 the core heat-generating area. During operation, the heat generated by the rotating shaft 13 inside the first end cover 11 is directly transferred to the heat sink 2. Simultaneously, the motor 31 fixed inside the protective cover 3 is powered on and started, driving the fan blade 32 to rotate at high speed. At the same time, the fan blade 32 is linked with the piston pump mechanism through the magnetic connection mechanism. With the connection of the fourth channel 52, the piston pump mechanism can push the coolant to circulate between the third channel 5 and the piston pump mechanism. With the help of the coolant's rapid absorption of heat and the transport formed by the circulation, the heat generated by the rotating shaft 13 inside the second end cover 12 is quickly transferred to the heat sink 2.

[0021] In this device, the heat sink 2 is made entirely of aluminum, which gives it good thermal conductivity and non-magnetic properties. This not only ensures rapid heat conduction but also does not interfere with the magnetic force transmission of the magnetic connection mechanism, thus ensuring the stability of the internal fan blades 32 driving the piston pump mechanism through the magnetic connection mechanism.

[0022] The above-mentioned structural design allows the heat generated in the core heating area within the first end cover 11 and the second end cover 12 to be quickly transferred to the heat sink 2. The fan blade 32 generates axial airflow during high-speed rotation, which directly impacts the surface of the heat sink 2, quickly carrying away the heat transferred to the heat sink 2. This effectively ensures that the vane pump can still operate stably in high-temperature environments, effectively improving the heat dissipation and temperature control effect of the vane pump at the core heating position of the high-speed rotating connection of the shaft 13. This effectively guarantees the service life of the vane pump and helps reduce energy consumption when the prime mover is driven.

[0023] In this device, the fan blade 32 is directly driven to rotate at high speed by the motor 31, and the piston pump mechanism can be started during the rotation of the fan blade 32 through the magnetic connection mechanism. This means that the power of the rotating shaft 13 will not be consumed during the operation of the heat dissipation system, thereby further reducing the energy consumption of the prime mover during the operation of the vane pump. Furthermore, since the rotating shaft 13 is not needed to transport the fan blade 32, the rotating shaft 13 does not need to penetrate the first end cover 11, thereby effectively reducing the sealing cost between the first end cover 11 and the rotating shaft 13. This not only makes the vane pump safer and more stable to use, but also effectively reduces the manufacturing and maintenance costs of the vane pump.

[0024] In the specific implementation process, such as Figure 4 - Figure 6 As shown, the heat sink 2 includes a circular plate 21 that fits tightly against the first end cover 11, and a protruding cylinder 22 is fixedly installed in the middle of the circular plate 21. Arc-shaped plates 23 evenly distributed around the cylinder 22 are fixedly installed on the circular plate 21. The connection between the circular plate 21 and the cylinder 22 is set as an arc-shaped chamfer 24. When the device is in use, by tightly fitting the circular plate 21 with the first end cover 11, the contact thermal resistance between the two can be effectively reduced, so that the heat on the first end cover 11 can be quickly conducted to the heat sink 2. Furthermore, by evenly distributing multiple arc-shaped plates 23 around the cylinder 22 and ensuring that the arc shape of the arc-shaped plates 23 follows the aerodynamic principle, the effective heat dissipation surface area per unit space can be greatly enhanced, and the airflow blown out during the high-speed rotation of the fan blades 32 can be guided in an orderly and dispersed manner. This not only makes the heat dissipation uniform, but also effectively reduces the wind resistance and noise during air cooling, which is conducive to ensuring the stability of the air cooling structure of the device.

[0025] In this device, by setting the connection between the cylinder 22 and the circular plate 21 as an arc-shaped chamfer 24, a smooth transition can be formed between the surface of the cylinder 22 and the surface of the circular plate 21. This facilitates the smooth flow of air along the surface of the cylinder 22 to the root, and then along the surface of the circular plate 21. It avoids the generation of stripping vortices when the airflow transfers between the cylinder 22 and the circular plate 21, effectively eliminating dead zones in air cooling. To a certain extent, it improves the uniformity and efficiency of airflow coverage during air cooling. Furthermore, the presence of the arc-shaped chamfer 24 can also effectively improve the structural strength between the cylinder 22 and the circular plate 21.

[0026] In the specific implementation process, such as Figure 1 and Figure 4 - Figure 5 As shown, the piston pump mechanism includes a circular frame 4 installed inside the cylinder 22, and a chamber 41 is provided inside the circular frame 4. An inlet 42 is provided on one side of the chamber 41, and an outlet 43 is provided on the other side of the chamber 41. A one-way valve 44 is installed in both the inlet 42 and the outlet 43. A piston block 45 is slidably installed in the chamber 41. The magnetic connection mechanism includes a first magnet 6 fixedly installed on the piston block 45, a second magnet 61 that is magnetically repelled by the first magnet 6, and a third magnet 62 that is magnetically repelled by the first magnet 6, which are fixedly installed on the fan blade 32.

[0027] When the device is in use, the fan blade 32 rotates, driving the second magnet 61 and the third magnet 62 to rotate synchronously. The second magnet 61 and the third magnet 62 alternately pass the corresponding positions of the first magnet 6. Through the magnetic interaction between the second magnet 61 and the third magnet 62 and the first magnet 6 on the piston block 45, the piston block 45 is driven to reciprocate within the chamber 41. When the second magnet 61 approaches the first magnet 6 due to rotation, it will repel the first magnet 6, thereby pushing the piston block 45 to compress the chamber 41. Under the one-way restriction of the coolant flow direction by the one-way valve 44 in the inlet 42 and the outlet 43, the coolant is discharged through the outlet 43. When the third magnet 62 approaches the first magnet 6, it will attract the first magnet 6, pulling the piston block 45 back to its original position. Under the one-way restriction of the coolant flow direction by the one-way valve 44 in the inlet 42 and the outlet 43, the coolant is drawn in from the inlet 42, thereby realizing continuous pumping and circulating heat dissipation of the coolant in the third channel 5.

[0028] In the specific implementation process, such as Figure 8 and Figure 9As shown, multiple chambers 41 are provided, which are distributed around the circular frame 4. A connecting cavity 46 is provided in the circular frame 4 between the multiple chambers 41. The liquid inlet 42 is connected to the connecting cavity 46. A first channel 47 is provided between a pipe connector 51 on the first end cover 11 and the connecting cavity 46. A second channel 48 is provided between another pipe connector 51 on the first end cover 11 and multiple liquid outlets 43. Only one second magnet 61 is provided, and multiple third magnets 62 are provided. The second magnet 61 and multiple third magnets 62 are distributed around the middle position of the fan blade 32. During rotation, the short-term repulsion and long-term attraction of the second magnet 61 and multiple third magnets 62 on the first magnet 61 prolong the residence time of the coolant in the chamber 41, so that the coolant can fully exchange heat.

[0029] When in use, the connecting cavity 46 is positioned in the middle of multiple surrounding chambers 41, serving as a common liquid collection chamber responsible for evenly distributing coolant to all chambers 41. By distributing multiple chambers 41 around the circular frame 4, and pumping coolant using the reciprocating movement of the corresponding piston blocks 45 inside, not only can the radial force within the circular frame 4 be balanced mechanically, but more importantly, the gradual pumping of coolant into multiple chambers 41 provides a phase difference at the fluid level. Combined with the arrangement of a single second magnet 61 and multiple third magnets 62 distributed around the perimeter, not all chambers 41 are draining or drawing liquid at the same time. The draining or drawing liquid into multiple chambers 41 is performed sequentially, resulting in minimal fluctuations in the flow rate of the coolant flowing through the second channel 48, exhibiting a near-laminar flow stability. This helps avoid excessive impact from intermittent coolant flow, thereby ensuring the stability of heat dissipation for the internal core heat-generating area of ​​the device.

[0030] In this device, a single second magnet 61 provides magnetic repulsion to the first magnet 6 on the piston block 45, triggering the draining action. Meanwhile, a majority of third magnets 62 provide magnetic attraction to the first magnet 6 on the piston block 45 for most of the subsequent rotation angle, ensuring that the piston block 45 can be completely reset and complete the full liquid intake operation in the chamber 41. This arrangement allows the coolant in the chamber 41 to remain for a certain period of time, enabling the heat carried by the coolant to be more fully dissipated by the heat sink 2. This prevents the coolant from being pumped back into the third channel 5 before the heat carried inside is completely dissipated. By extending the residence time of the coolant in the chamber 41, ensuring that the coolant carrying heat is fully released before being returned, the efficiency of coolant heat exchange and heat dissipation can be effectively improved.

[0031] In the specific implementation process, such as Figure 4 - Figure 5 and Figure 8- Figure 9 As shown, the second channel 48 is arranged around the circular frame 4. The first channel 47 and the second channel 48 are opened on the two end walls where the first end cover 11 and the circular plate 21 are in contact with each other. With the help of the coolant filled in the first channel 47 and the second channel 48, the efficiency of heat transfer from the first end cover 11 to the circular plate 21 is improved. When the device is in use, since the first channel 47 and the second channel 48 are directly machined on the contact surface of the first end cover 11 and the circular plate 21, and the first channel 47 and the second channel 48 are always filled with coolant, the coolant in the first channel 47 and the second channel 48 can form a highly efficient heat bridge between the first end cover 11 and the circular plate 21 by taking advantage of the fact that the thermal conductivity of liquid is much better than that of air. This greatly improves the efficiency and speed of heat transfer from the first end cover 11 to the heat sink 2, which is beneficial to improving the overall heat dissipation performance of the vane pump.

[0032] The circular plate 21 is fixedly equipped with an inlet port 8 and an outlet port 81 that communicate with the first channel 47. Both the inlet port 8 and the outlet port 81 are sealed with plugs on their outer sides. During the use of this device, the operator can flexibly open and close the inlet port 8 and the outlet port 81 according to the actual heat dissipation needs. Other heat dissipation modules can be connected through the inlet port 8 and the outlet port 81 to enhance the overall heat dissipation effect.

[0033] In the specific implementation process, such as Figure 4 As shown, the fourth channel 52 is evenly distributed in an S-shape within the end wall of the pump housing 1. The coolant circulates within the fourth channel 52, increasing the heat exchange area of ​​the coolant. When in use, the fourth channel 52 is designed as an S-shaped or serpentine meandering path, which significantly extends the flow path of the coolant within the pump housing 1, thereby increasing the contact time between the coolant and the end wall of the pump housing 1. This results in more thorough heat exchange within the pump housing 1. Therefore, when dissipating heat at the rotating connection point of the shaft 13, this device can not only utilize the heat dissipation component 2 but also the flow of the pumped liquid within the pump housing 1 for auxiliary heat dissipation, further enhancing the heat dissipation effect without incurring additional energy consumption, thus contributing to energy-saving heat dissipation.

[0034] In the specific implementation process, such as Figure 1 and Figure 5As shown, a groove 53 corresponding to the pipe connector 51 is provided at the end of the pump casing 1. The groove 53 is recessed inside the pump casing 1. The connection surface of the pipe connector 51 and the fourth channel 52 is offset from the connection surface of the pump casing 1 and the first end cover 11 through the groove 53. The pipe connector 51 and the groove 53 are located at the lower part of the pump casing 1. When the device is in use, the inwardly recessed grooves 53 at both ends of the pump casing 1 make the connection surface of the pipe connector 51 and the fourth channel 52 offset from the connection surface of the pump casing 1 and the first end cover 11. In this device, the connection surface between the pump casing 1 and the first end cover 11 is the crucial main sealing surface. Its integrity is directly related to the sealing performance and operational stability of the entire vane pump. In the prior art, the connection surface between the pipe connector 51 and the fourth channel 52 inside the pump casing 1 is usually directly set on the main sealing surface. This means that once a leak occurs in the connection between the pipe connector 51 and the fourth channel 52, the coolant will erode the main sealing surface, leading to the sealing failure of the main sealing surface.

[0035] In this device, the connection surface between the pipe joint 51 and the fourth channel 52 is axially offset from the main sealing surface by the groove 53, which creates a leakage collection area that is offset from the main sealing surface. This means that even if leakage occurs at the connection of the pipe joint 51, the leaked coolant will be effectively trapped in the groove 53, forming a reliable physical barrier between it and the main sealing surface. This helps to prevent the leaked coolant from spreading and corroding along the main sealing surface through capillary action or pressure penetration, thereby helping to ensure the stability and safety of the vane pump during long-term operation.

[0036] Furthermore, by arranging the pipe joint 51 and the groove 53 as a whole directly below the pump casing 1, the leaked coolant will naturally converge downwards and drip from the lowest point under the action of gravity, which can prevent the leaked coolant from stagnating or spreading disorderly. When leaking, the coolant dripping down from the groove 53 will form obvious wet marks below this area. This tear mark effect can provide maintenance personnel with an intuitive visual warning, making it easy to detect in time. With the above structures working together, not only can the leaked coolant be further prevented from corroding the main sealing surface, but the detectability of coolant leaks can also be greatly improved, which is conducive to improving the convenience of maintenance for the vane pump.

[0037] In the specific implementation process, such as Figure 4 - Figure 5 and Figure 9 - Figure 11As shown, a magnetic isolation valve 7 is installed inside the cylinder 22, which is located between the first magnet 6, the second magnet 61, and the third magnet 62. The magnetic isolation valve 7 includes a first magnetic isolation plate 71 and a second magnetic isolation plate 72 that is coaxially and rotatably attached to the first magnetic isolation plate 71. The first magnetic isolation plate 71 has a first through hole 73 distributed around it, and the second magnetic isolation plate 72 has a second through hole 74 that is offset from the first through hole 73. A bimetallic strip 75 is connected between the first magnetic isolation plate 71 and the second magnetic isolation plate 72. The circular frame 4 is slidably inserted into the cylinder 22. The first magnetic isolation plate 71 and the second magnetic isolation plate 72 both have slots 76 that are adapted to the two ends of the bimetallic strip 75. The bimetallic strip 75 is engaged in the slots 76.

[0038] When the device is in use, if the vane pump is not under high load, the temperature of the heat sink 2 is within the normal range. This results in a small deformation of the bimetallic strip 75, and the first through hole 73 and the second through hole 74 are in a state of partial overlap, allowing a small amount of magnetic field to pass through. In this state, the piston block 45 is driven to reciprocate within the chamber 41 with a small stroke, which keeps the pumping efficiency within the chamber 41 at a slow level, ensuring basic circulation and heat dissipation. In this state, the magnetic connection mechanism is weakly connected between the piston pumping mechanism and the fan blade 32, resulting in the fan blade 32 being under low load. Therefore, the power consumption of the motor 31 used to drive the fan blade 32 is low.

[0039] When the vane pump is under high operating load, a large amount of heat is generated at the rotating connection of the shaft 13, causing the temperature of the heat sink 2 to rise significantly. In this state, the bimetallic strip 75 bends more violently after being heated due to the difference in thermal expansion coefficients of the metals on both sides. This bending drives the first magnetic shielding plate 71 and the second magnetic shielding plate 72, which are engaged with it, to rotate relative to each other, thereby increasing the overlapping area of ​​the first through hole 73 and the second through hole 74, allowing a large amount of magnetic field to pass through. In this state, the stroke of the piston block 45 being driven to reciprocate within the chamber 41 increases, resulting in a significant improvement in the pumping efficiency within the chamber 41 and more efficient circulation and heat dissipation. In this state, the magnetic connection mechanism strengthens the connection between the piston pumping mechanism and the fan blade 32, causing the fan blade 32 to be under high load. Therefore, the power consumption of the motor 31 used to drive the fan blade 32 increases.

[0040] The above-mentioned structural design allows the device to flexibly adjust the load and power consumption of motor 31 according to the actual heat dissipation requirements during operation, which helps to save energy at low temperatures and automatically improve the heat dissipation effect at high temperatures, thus conveniently achieving the goal of energy-saving and efficient heat dissipation.

[0041] In this device, since the circular frame 4 can be removed from the cylinder 22 and the bimetallic strip 75 can be replaced by engaging with the slot 76, different specifications of bimetallic strip 75 can be flexibly selected according to the heat dissipation requirements during actual use. This enables the heat dissipation system in the device to respond at different temperature thresholds, which is beneficial to improving the control flexibility of the vane pump for efficient heat dissipation.

[0042] Specifically, the working principle of this invention is as follows: This invention employs an independently driven composite heat dissipation system. Motor 31 drives fan blade 32 to rotate, providing forced air cooling to the heat sink 2. Simultaneously, the interaction between the second magnet 61, the third magnet 62, and the first magnet 6 in the magnetic connection mechanism drives a piston-type pump mechanism, causing the piston block 45 to reciprocate within the chamber 41. This pumped coolant circulates between the first channel 47, the second channel 48, the third channel 5, and the fourth channel 52, precisely absorbing the heat generated at the rotating connection point of the shaft 13. The heat-carrying coolant then flows to the heat sink 2, where it is dissipated through air cooling. Simultaneously, the magnetic isolation valve 7 automatically adjusts the overlap between the first through hole 73 and the second through hole 74 based on the temperature change of the heat sink 2 via the deformation of the bimetallic strip 75. By controlling the strength of the magnetic field, the movement amplitude of the piston block 45 within the chamber 41 is automatically adjusted, achieving adaptive regulation of the pump flow rate. This combined action ensures efficient heat dissipation while significantly reducing energy consumption and extending the service life of the vane pump.

[0043] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency liquid-cooled heat dissipation vane pump, comprising a pump casing (1), characterized in that: The pump housing (1) is fixedly fitted with a first end cover (11) and a second end cover (12) at both ends. A rotating shaft (13) located inside the pump housing (1) is rotatably mounted between the first end cover (11) and the second end cover (12). A heat sink (2) is fixedly mounted on the outside of the first end cover (11). A protective cover (3) is fixedly mounted on the outside of the heat sink (2), and a motor (31) is fixedly mounted inside the protective cover (3). A fan blade (32) is fixedly mounted on the drive shaft of the motor (31). The motor (31) drives the fan blade (32) to blow air directly onto the heat sink (2) to accelerate heat dissipation. A piston pump mechanism is installed inside the heat sink (2). The end cap (12) has a third channel (5) that surrounds the outside of the rotating shaft (13). The first end cap (11) has pipe joints (51) arranged side by side. The pump housing (1) has two fourth channels (52) arranged side by side in the end wall that connect the two ends of the third channel (5) and the two pipe joints (51). The third channel (5) is connected to the piston pump mechanism through the pipe joints (51) and the fourth channel (52). A magnetic connection mechanism is provided between the fan blade (32) and the piston pump mechanism. The fan blade (32) drives the piston pump mechanism to start through the magnetic connection mechanism to circulate and pump the coolant in the third channel (5).

2. The high-efficiency liquid-cooled heat dissipation vane pump according to claim 1, characterized in that: The heat sink (2) includes a circular plate (21) that fits tightly against the first end cover (11), and a protruding cylinder (22) is fixedly installed in the middle of the circular plate (21). Arc-shaped pieces (23) that are evenly distributed around the cylinder (22) are fixedly installed on the circular plate (21), and the connection between the circular plate (21) and the cylinder (22) is set as an arc-shaped chamfer (24).

3. The high-efficiency liquid-cooled heat dissipation vane pump according to claim 2, characterized in that: The piston pump mechanism includes a circular frame (4) installed inside the cylinder (22), and a chamber (41) is provided inside the circular frame (4). An inlet (42) is provided on one side of the chamber (41), and an outlet (43) is provided on the other side of the chamber (41). A one-way valve (44) is installed in both the inlet (42) and the outlet (43). A piston block (45) is slidably installed in the chamber (41). The magnetic connection mechanism includes a first magnet (6) fixedly installed on the piston block (45), a second magnet (61) that is magnetically repelled by the first magnet (6) and a third magnet (62) that is magnetically repelled by the first magnet (6) are fixedly installed on the fan blade (32).

4. The high-efficiency liquid-cooled heat dissipation vane pump according to claim 3, characterized in that: The chambers (41) are provided in a plurality of ways, and the plurality of chambers (41) are distributed around the circular frame (4). The circular frame (4) is provided with a connecting cavity (46) between the plurality of chambers (41). The liquid inlet (42) is connected to the connecting cavity (46). A first channel (47) is provided between a pipe connector (51) on the first end cap (11) and the connecting cavity (46). A second channel (48) is provided between another pipe connector (51) on the first end cap (11) and the plurality of liquid outlets (43).

5. A high-efficiency liquid-cooled heat dissipation vane pump according to claim 4, characterized in that: The second channel (48) is arranged around the round frame (4). The first channel (47) and the second channel (48) are opened on the two side end walls where the first end cover (11) and the round plate (21) fit together. With the help of the coolant filled in the first channel (47) and the second channel (48), the efficiency of heat transfer from the first end cover (11) to the round plate (21) is improved.

6. The high-efficiency liquid-cooled heat dissipation vane pump according to claim 4, characterized in that: There is only one second magnet (61), and there are multiple third magnets (62). The second magnet (61) and multiple third magnets (62) are arranged around the middle position of the fan blade (32). During the rotation, the second magnet (61) and multiple third magnets (62) repel the first magnet (6) for a short time and attract it for a long time, thus prolonging the time that the coolant stays in the chamber (41) and allowing the coolant to fully exchange heat.

7. The high-efficiency liquid-cooled heat dissipation vane pump according to claim 1, characterized in that: The fourth channel (52) is evenly distributed in an S-shape within the end wall of the pump casing (1). Coolant circulates within the fourth channel (52), increasing the heat exchange area of ​​the coolant.

8. The high-efficiency liquid-cooled heat dissipation vane pump according to claim 1, characterized in that: The pump housing (1) has a groove (53) at the end corresponding to the pipe connector (51). The groove (53) is recessed inside the pump housing (1). The connection surface of the pipe connector (51) and the fourth channel (52) is offset from the connection surface of the pump housing (1) and the first end cover (11) through the groove (53). The pipe connector (51) and the groove (53) are located at the lower part of the pump housing (1).

9. A high-efficiency liquid-cooled heat dissipation vane pump according to claim 3, characterized in that: The cylinder (22) is equipped with a magnetic isolation valve (7) disposed between the first magnet (6), the second magnet (61), and the third magnet (62). The magnetic isolation valve (7) includes a first magnetic isolation plate (71) and a second magnetic isolation plate (72) that is coaxially rotated and fitted with the first magnetic isolation plate (71). The first magnetic isolation plate (71) has a first through hole (73) distributed around it, and the second magnetic isolation plate (72) has a second through hole (74) that is offset from the first through hole (73). A bimetallic strip (75) is connected between the first magnetic isolation plate (71) and the second magnetic isolation plate (72).

10. A high-efficiency liquid-cooled heat dissipation vane pump according to claim 9, characterized in that: The circular frame (4) is slidably inserted into the cylinder (22). The first magnetic shielding plate (71) and the second magnetic shielding plate (72) are each provided with a slot (76) that matches the two ends of the bimetallic strip (75). The bimetallic strip (75) is engaged in the slot (76).

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