Liquid-cooled electronic water pump

Abstract

The application relates to the technical field of electronic water pumps, in particular to a liquid-cooled electronic water pump, which comprises a pump base, a pump body arranged at the top end of the pump base and a pump head mounted at one end of the pump body. The electronic water pump can perform liquid cooling heat dissipation, thereby being free from the restriction of external environment, and the liquid cooling is more efficient than traditional air cooling. The motor temperature can be accurately controlled, the operating heat is absorbed by the liquid in the sealing cover and then discharged through the lead-out pipe, the environment temperature and humidity are not disturbed, and the electronic water pump is suitable for scenes such as semiconductor workshops and data machine rooms. Meanwhile, through the arrangement of a waste heat dissipation assembly, when the electronic water pump stops, the cooling liquid in the drainage tank is sprayed on the pump body and the heat dissipation fins through the drainage head of the liquid discharge pipe to perform waste heat dissipation. The cooling liquid after heat dissipation finally flows into the receiving tank for collection, the whole process is uninterrupted, the motor temperature in the pump body can be gently reduced to a safe range, the damage of the waste heat to the core components of the pump body is effectively avoided, the overall service life is prolonged, and the operation stability during subsequent start-up is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic water pumps, in particular to a liquid-cooled electronic water pump. BACKGROUND

[0002] The core components of an electronic water pump include a pump base, a pump body, a pump head, and a matching pipeline. The pump base serves as a basic support component for fixing the entire electronic water pump structure. The pump body internally encapsulates a driving motor, which is the power core of the electronic water pump. One end of the pump body is sealingly connected to the pump head, and the pump head is respectively connected to the water inlet pipe and the water outlet pipe on both sides. Some structures also have auxiliary heat dissipation components outside the motor. The working principle is as follows: when running, the pump base stably supports the entire device, and the motor inside the pump body is powered on to start, driving the impeller in the pump head to rotate at high speed. The negative pressure generated by the rotation of the impeller sucks the liquid to be transported from the water inlet pipe into the pump head, and after being pressurized by the impeller, the liquid is discharged from the water outlet pipe, realizing the function of continuous liquid transportation. In this process, the motor continuously runs at high speed, which generates heat due to energy loss, and needs to be maintained within a safe working temperature range through a specific heat dissipation structure to ensure the stable operation of the electronic water pump.

[0003] The existing electronic water pump relies on air cooling for motor cooling, and generally processes heat dissipation fins on the motor shell. The fins are ventilated by built-in or external fans, and the heat of the motor is carried away by air flow. However, this heat dissipation method is greatly limited by the external environment: if the electronic water pump is installed in a closed space such as a basement or a data center, or in a place with high requirements for environmental cleanliness and humidity such as a semiconductor plant or a server room, there is often a lack of sufficient ventilation conditions, and it is not convenient to install air conditioning equipment in some scenarios, resulting in a significant reduction in air cooling efficiency and difficulty in effectively controlling the large amount of heat generated by the high-power motor during operation. More importantly, the existing cooling structure is completely synchronized with the operating state of the electronic water pump, and once the electronic water pump stops working, the fan and the heat dissipation process also stop. However, the motor still has a lot of residual heat after stopping, which cannot be further dissipated by the existing structure. Long-term accumulation of these residual heat can accelerate the aging of the motor insulation layer and even cause component thermal damage, seriously affecting the service life and operation reliability of the electronic water pump. SUMMARY

[0004] The purpose of the present application is to provide a liquid-cooled electronic water pump to solve the problems raised in the background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A liquid-cooled electronic water pump, comprising a pump base, a pump body arranged at the top end of the pump base, and a pump head mounted at one end of the pump body, one end of the pump head is fixedly connected with a water inlet pipe, the other end of the pump head is fixedly connected with a drain pipe, the outside of the pump body is sleeved and fixedly connected with a sealing cover, the top end of the pump base is fixedly connected with the outside of the sealing cover, a plurality of heat dissipation fins are fixedly installed at the outside of the pump body at equal angles, a plurality of flow guide openings are arranged at equal intervals between the plurality of heat dissipation fins, the output end of the drain pipe is fixedly connected with a conduit, and the drain pipe and the conduit are in fluid communication, the output end of the conduit is fixedly installed in the inside of the sealing cover near the top end, a waste heat dissipation assembly is arranged on the outside of the sealing cover, and a circulating suction assembly is arranged at the end of the pump body away from the pump head.

[0006] Further, the bottom end of the sealing cover away from the conduit is fixedly connected with a lead-out pipe, the output end of the lead-out pipe is fixedly installed with a cavity box, the top end of the cavity box away from the lead-out pipe is fixedly connected with a discharge pipe, and the end of the discharge pipe away from the cavity box is fixedly connected with a flange.

[0007] Further, the opening end of the conduit in the inside of the sealing cover is slidingly and sealingly connected with a sealing plug, the outside of the pump body near the sealing plug is sleeved with a ring-shaped frame, the inside of both sides of the ring-shaped frame is slidingly installed with a limiting rod, one end of the limiting rod is fixedly installed on the side wall of the sealing cover, and the other end of the limiting rod is fixedly installed with a limiting block.

[0008] Further, the outside of the sealing plug and the top end of the ring-shaped frame are fixedly installed, the inside of the top end of the sealing cover is transversely arranged with a drain pipe, the input end of the drain pipe is fixedly installed in the inside of the bottom end of the drain tank, and the inside of the side of the drain pipe near the sealing plug is fixedly connected with a limiting valve.

[0009] Further, the valve rod end of the limiting valve is fixedly installed with a gear, the bottom end of the gear is meshingly connected with a rack, one end of the rack is fixedly installed with the top end of the ring-shaped frame, and the inside of the drain pipe near the pump body is fixedly installed with a plurality of drain heads at equal intervals.

[0010] Further, the outside of the limiting rod is sleeved with a reset spring, and both ends of the reset spring are fixedly installed on the outside of the limiting block and the outside of the ring-shaped frame, respectively.

[0011] Further, a plurality of first through holes are equidistantly arranged in the bottom end of the sealing cover, a sealing strip is slidingly and sealingly installed on the bottom wall of the sealing cover near the plurality of first through holes, a second through hole is arranged in the inner part of the sealing strip near each first through hole, a connecting block is fixedly installed on the top of one end of the sealing strip, and one end of the connecting block is fixedly installed on the bottom end of the annular frame.

[0012] Further, the circulating suction assembly comprises a disc and a suction cylinder, the disc is arranged on one side of the cavity box, the suction cylinder is fixed on one side of the pump body through a support, a rotating shaft is rotatably and sealingly installed in the inner part of the cavity box, the rotating shaft penetrates into the inner part of the cavity box, a plurality of blades are fixedly arranged on the outer circumferential surface of the rotating shaft at equal angles, and one end of the rotating shaft is fixedly installed on the middle part of one side of the disc.

[0013] Further, a limiting column is fixedly installed on the edge of the disc, a rectangular frame is slidingly installed on the outer part of the limiting column, a sliding seat is fixedly installed on one side of the cavity box, a piston rod is vertically and slidingly installed in the inner part of the sliding seat, the top end of the piston rod is fixedly connected to the middle part of the bottom end of the rectangular frame, and the piston end of the piston rod is slidingly and sealingly installed in the inner part of the suction cylinder.

[0014] Further, a one-way liquid inlet valve pipe and a one-way liquid outlet valve pipe are fixedly installed on the bottom end of the suction cylinder, the input end of the one-way liquid inlet valve pipe is fixedly installed in the inner part of the receiving box, the output end of the one-way liquid outlet valve pipe is fixedly installed in the inner part of the top end of the drainage tank, a one-way valve is fixedly installed on the outer part of the top end of the receiving box, and a filter screen pipe is fixedly installed in the inner part of the top end of the drainage tank.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] 1. The electronic water pump can be liquid-cooled and radiated through the cooperation of the heat dissipation fins, the sealing cover, the conduit and the lead-out pipe, thereby being free from the restriction of the external environment, having higher efficiency than traditional air cooling, being able to accurately control the temperature of the motor, and having the operating heat absorbed by the liquid in the sealing cover and then discharged through the lead-out pipe without disturbing the ambient temperature and humidity, thereby being suitable for scenes such as semiconductor workshops and data machine rooms, and through the arrangement of the waste heat radiation assembly, the cooling liquid in the drainage tank is sprayed on the pump body and the heat dissipation fins through the drainage head of the liquid outlet pipe to radiate the waste heat after the electronic water pump stops; the cooled liquid finally flows into the receiving box for collection, the whole process is continuous, the temperature of the motor in the pump body can be gently reduced to a safe range, the damage of the waste heat to the core components of the pump body is effectively avoided, the overall service life of the electronic water pump is prolonged, and the operation stability during subsequent start-up is ensured.

[0017] 2. Through the setting of the circulating suction assembly, the electronic water pump can suck the cooling liquid collected in the receiving box into the drainage tank when the electronic water pump is running for the second time after the residual heat dissipation assembly stops running, so as to ensure that the cooling liquid can be used stably, which not only solves the waste problem of the traditional cooling liquid after single use, but also reduces the maintenance workload of the staff who frequently supplement the cooling liquid. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the application;

[0020] Figure 3 It is a schematic diagram of the overall structure of the application;

[0021] Figure 4 It is a schematic diagram of the overall structure of the application; Figure 3

[0022] Figure 5 It is a schematic diagram of the overall structure of the application;

[0023] Figure 6 It is a schematic diagram of the overall structure of the application; Figure 5

[0024] It is a schematic diagram of the overall structure of the application; Figure 7 Figure 5

[0025] It is a schematic diagram of the overall structure of the application; Figure 8 Figure 5 It is a schematic diagram of the overall structure of the application;

[0026] Figure 9 It is a schematic diagram of the overall structure of the application;

[0027] Figure 10 It is a schematic diagram of the overall structure of the application;

[0028] Figure 11 It is a schematic diagram of the overall structure of the application;

[0029] Figure 12 Figure 10 It is a schematic diagram of the overall structure of the application;

[0030] ​​​​The components represented by the reference numbers in the drawings are listed as follows: 1, pump base; 2, pump body; 3, pump head; 4, water inlet pipe; 5, water outlet pipe; 6, sealing cover; 7, guide pipe; 8, heat dissipation fin; 9, guide opening; 10, guide-out pipe; 11, cavity box; 12, discharge pipe; 13, flange plate; 14, water discharge tank; 15, receiving tank; 16, sealing plug; 17, annular frame; 18, limiting rod; 19, limiting block; 20, liquid discharge pipe; 21, limiting valve; 22, gear; 23, rack; 24, water discharge head; 25, connecting block; 26, first through hole; 27, sealing strip; 28, second through hole; 29, return spring; 30, rotating shaft; 31, fan blade; 32, disc; 33, sliding seat; 34, piston rod; 35, limiting column; 36, rectangular frame; 37, suction cylinder; 38, one-way liquid inlet valve pipe; 39, one-way liquid outlet valve pipe; 40, one-way valve; 41, filter screen pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0032] Embodiment one: please refer to Figure 1 - Figure 9 A liquid-cooled electronic water pump, comprising a pump base 1, a pump body 2 arranged at the top end of the pump base 1, and a pump head 3 installed at one end of the pump body 2, one end of the pump head 3 is fixedly connected with a water inlet pipe 4 in a fluid communication manner, the other end of the pump head 3 is fixedly connected with a water outlet pipe 5 in a fluid communication manner, the outside of the pump body 2 is sleeved and fixedly connected with a sealing cover 6, the top end of the pump base 1 is fixedly connected with the outside of the sealing cover 6, a plurality of heat dissipation fins 8 are fixedly installed at equal angles on the outside of the pump body 2, a plurality of guide openings 9 are arranged at equal intervals and penetrate through between the plurality of heat dissipation fins 8, the output end of the water outlet pipe 5 is fixedly connected with a guide pipe 7 in a fluid communication manner, the output end of the guide pipe 7 penetrates through and is fixedly installed inside the sealing cover 6 close to the top end, and a waste heat dissipation assembly is arranged on the outside of the sealing cover 6.

[0033] The bottom end of the sealing cover 6 away from the guide pipe 7 is fixedly connected with a guide-out pipe 10, the output end of the guide-out pipe 10 is fixedly connected with a cavity box 11, the top end of the cavity box 11 away from the guide-out pipe 10 is fixedly connected with a discharge pipe 12, and the one end of the discharge pipe 12 away from the cavity box 11 is fixedly connected with a flange plate 13.

[0034] The conduit 7 is slidingly and sealingly arranged in the open end inside the sealing cover 6, and the sealing plug 16 is arranged outside the sealing plug 16. The annular frame 17 is slidingly arranged outside the pump body 2. The limiting rods 18 are slidingly installed in the two sides of the annular frame 17. One end of the limiting rod 18 is fixedly installed on the side wall of the sealing cover 6. The other end of the limiting rod 18 is fixedly installed with the limiting block 19.

[0035] The sealing plug 16 is fixedly installed outside the annular frame 17. The drainage pipe 20 is horizontally arranged inside the top end of the sealing cover 6. The input end of the drainage pipe 20 is fixedly installed inside the bottom end of the drainage tank 14. The limiting valve 21 is fixedly installed inside the side of the drainage pipe 20 close to the sealing plug 16.

[0036] The gear 22 is fixedly installed on the valve rod end of the limiting valve 21. The gear rack 23 is meshingly connected to the bottom end of the gear 22. One end of the gear rack 23 is fixedly installed on the top end of the annular frame 17. The drainage heads 24 are fixedly installed inside the pump body 2 at equal intervals.

[0037] The limiting rod 18 is sleeved with the reset spring 29. The two ends of the reset spring 29 are fixedly installed on one side of the limiting block 19 and one side of the annular frame 17.

[0038] The first through holes 26 are arranged inside the bottom end of the sealing cover 6 at equal intervals. The sealing strip 27 is slidingly and sealingly installed on the bottom wall of the sealing cover 6 close to the first through holes 26. The second through holes 28 are arranged inside each first through hole 26 of the sealing strip 27. The connecting block 25 is fixedly installed on one end of the sealing strip 27. One end of the connecting block 25 is fixedly installed on the bottom end of the annular frame 17.

[0039] In this embodiment, the working principle and linkage logic of the liquid-cooled electronic water pump are as follows: first, the pipeline is connected, the water inlet pipe 4 at one end of the pump head 3 is sealingly connected with the external pipeline to be transported, and the flange plate 13 at the end of the drainage pipe 12 is fixedly connected with the external liquid receiving pipeline, so as to ensure the sealing of the entire liquid conveying path and lay a foundation for subsequent stable operation. After the connection is completed, the electronic water pump is started, the drive motor inside the pump body 2 is powered on, the impeller inside the pump head 3 is rotated at high speed, the negative pressure generated by the rotation of the impeller sucks the external liquid into the inside of the pump head 3, and after the liquid is pressurized, the liquid flows into the inside of the sealing cover 6 through the conduit 7 of the drainage pipe 5.

[0040] The liquid flowing in the conduit 7 generates pressure, which pushes the open end of the conduit 7 to move the sliding seal plug 16 away from the conduit 7; since the seal plug 16 is fixedly connected with the annular frame 17, the seal plug 16 moves synchronously to drive the annular frame 17 to slide along the limiting rod 18 penetrating through the two sides, and in this process, the annular frame 17 compresses the reset spring 29 outside the limiting rod 18, so that the reset spring 29 stores elastic potential energy. When the annular frame 17 slides, two key linkages are achieved synchronously: first, the rack 23 fixed at the top end of the annular frame 17 moves with the annular frame 17, the rack 23 is engaged with the gear 22 at the valve rod end of the limiting valve 21, which drives the gear 22 to rotate, and finally makes the limiting valve 21 close the passage of the drain pipe 20, avoiding the cooling liquid in the drain tank 14 from being accidentally discharged when the electronic water pump is running, preventing the cooling liquid from interfering with normal liquid delivery and real-time heat dissipation; second, the bottom end of the annular frame 17 drives the sealing strip 27 to slide along the bottom wall of the sealing cover 6 through the connecting block 25, so that the second through hole 28 on the sealing strip 27 is completely misaligned with the first through hole 26 on the bottom wall of the sealing cover 6, sealing the first through hole 26, avoiding the receiving tank 15 from collecting liquid in advance when the electronic water pump is running, ensuring that the liquid in the sealing cover 6 can focus on motor heat dissipation, and ensuring the stability of delivery and heat dissipation.

[0041] The liquid entering the inside of the sealing cover 6 will continuously flow around the pump body 2; since the pump body 2 is fixed with the heat dissipation fins 8 at an equal angle around the outside, and the heat dissipation fins 8 are provided with the flow guide openings 9 inside, the liquid not only can directly contact the pump body 2 shell to absorb the heat generated by the motor running, but also can fully contact the heat dissipation fins 8 through the flow guide openings 9, the heat dissipation fins 8 increase the heat exchange area of the liquid flow and the heating components, and the flow guide openings 9 make the liquid flow more evenly cover the pump body 2 and fin surface, greatly improving the heat exchange efficiency. This liquid cooling method does not depend on the ambient temperature at all, even in closed spaces such as basements, data machine rooms, and high-environmental-requirement places such as semiconductor workshops, it can also stably dissipate heat, and the heat absorbed by the liquid will flow into the cavity box 11 through the outlet pipe 10 at the bottom end of the sealing cover 6, and then be delivered to the external pipeline through the discharge pipe 12 and the flange plate 13, without releasing heat to the surrounding environment, avoiding affecting the cleanliness and temperature and humidity of the environment, while effectively controlling the temperature of the motor inside the electronic water pump, preventing high temperature from causing performance degradation or component damage of the motor.

[0042] When the electronic water pump is used up and turned off, the motor inside the pump body 2 stops running, the drain pipe 5 no longer has liquid flowing, the liquid flow pressure in the conduit 7 disappears, and the previously compressed reset spring 29 restores the deformation, pushing the annular frame 17 to reset in the reverse direction along the limiting rod 18. When the annular frame 17 resets, it synchronously drives the sealing plug 16 to move, sealing the opening end of the conduit 7, preventing external impurities from entering the inside of the sealing cover 6 and polluting the heat dissipation components. At the same time, since the cooling liquid and the working liquid extracted by the water pump are the same liquid, the problem of residual pollution or functional interference caused by mixing of different liquids is avoided. The rack 23 at the top end of the annular frame 17 resets with the annular frame 17, driving the gear 22 to rotate in the reverse direction, preparing for the opening of the subsequent liquid flow path.

[0043] During the resetting process of the annular frame 17, the sealing strip 27 is driven to reset synchronously through the connecting block 25, which directly aligns the second through hole 28 on the sealing strip 27 with the first through hole 26 in the bottom wall of the sealing cover 6, equivalent to opening the liquid outlet of the inside of the sealing cover 6. At this time, the residual liquid (of the same origin as the cooling liquid) in the sealing cover 6 that has not been timely discharged due to the pump body 2 stopping and losing the power of transportation, will quickly flow into the receiving tank 15 along the aligned first through hole 26 and second through hole 28 under the action of gravity, preferentially completing the emptying and collection of the residual liquid inside the sealing cover 6. This part of the liquid can be used as a supplementary source of the subsequent cooling liquid.

[0044] At the same time, the annular frame 17 drives the rack 23 to rotate the gear 22, which has synchronously opened the limiting valve 21 on the liquid discharge pipe 20. The cooling liquid (the same as the working liquid) stored in the drain tank 14 will flow along the liquid discharge pipe 20 to each drain head 24, and then uniformly drip on the pump body 2 and the heat dissipation fins 8, specifically absorbing the residual heat after the motor stops (at this time, there is no large amount of residual liquid in the sealing cover 6 to hinder the cooling liquid from directly contacting the heating components of the electronic water pump), avoiding the problem of long-term accumulation of residual heat accelerating the aging of the motor insulation layer, causing short circuit of the winding, etc., and ensuring that the motor temperature drops smoothly to the safety interval.

[0045] After the cooling liquid absorbs the residual heat, it will flow along the surface of the pump body 2 shell and the heat dissipation fins 8, and part of it will also penetrate into the fin gap through the flow guide opening 9, achieving no-dead-angle heat dissipation. The cooling liquid that has absorbed the residual heat will also flow into the inside of the receiving tank 15 through the first through hole 26 and the second through hole 28, and merge with the previously collected residual working liquid, avoiding waste of the cooling liquid and supplementing the cooling liquid for the next time the pump stops, ensuring that the entire process has no residual accumulation and does not affect subsequent use; and without manual intervention throughout, it realizes real-time liquid cooling, automatic closed loop of residual heat dissipation when the pump stops, and cooling liquid recovery, significantly improving the operation reliability and service life of the electronic water pump, especially suitable for industrial scenes that need to be started and stopped frequently.

[0046] It should be further explained that the volume of the drainage tank 14 and the receiving tank 15 in the application is designed to be matched, the volume of the drainage tank 14 is not less than the volume of the receiving tank 15, and the total discharge amount of the residual working fluid and cooling fluid in the sealing cover 6 is always less than the rated volume of the receiving tank 15, which avoids the situation that the residual working fluid and cooling fluid in the sealing cover 6 cannot completely flow in due to the overflow of the receiving tank 15, and ensures the safety and controllability of the entire liquid collection and circulation process.

[0047] Embodiment two: please refer to Figure 10 Figure 12 The present embodiment further illustrates embodiment one, and the pump body 2 away from the pump head 3 is provided with a circulating suction assembly.

[0048] The circulating suction assembly comprises a disc 32 and a suction cylinder 37, the disc 32 is arranged outside one side of the cavity box 11, the suction cylinder 37 is fixed on the outside of one side of the pump body 2 through a support, a rotating shaft 30 is rotatably and penetratingly installed in the inside of the cavity box 11, the section of the rotating shaft 30 penetrating into the inside of the cavity box 11 is fixed with a plurality of blades 31 at equal angles on the outer circumferential surface, and one end of the rotating shaft 30 is fixedly installed in the middle part of one side of the disc 32.

[0049] A limiting column 35 is fixedly installed at the edge of the disc 32, a rectangular frame 36 is slidingly installed through the outside of the limiting column 35, a sliding seat 33 is fixedly installed outside one side of the cavity box 11, a piston rod 34 is slidingly and vertically installed in the inside of the sliding seat 33, the top end of the piston rod 34 is fixedly connected to the middle part of the bottom end of the rectangular frame 36, and the piston end of the piston rod 34 is slidingly and sealingly installed in the inside of the suction cylinder 37.

[0050] A one-way liquid inlet valve pipe 38 and a one-way liquid outlet valve pipe 39 are fixedly installed through the bottom end of the suction cylinder 37, the input end of the one-way liquid inlet valve pipe 38 is fixedly installed through the inside of the bottom end of the receiving tank 15, the output end of the one-way liquid outlet valve pipe 39 is fixedly installed through the inside of the top end of the drainage tank 14, a one-way valve 40 is fixedly installed through the outside of the top end of the receiving tank 15, and a filter screen pipe 41 is fixedly installed through the inside of the top end of the drainage tank 14.

[0051] In this embodiment, the circulating suction assembly of embodiment two is designed to realize the automatic circulation and reuse of the cooling liquid, and to provide stable liquid storage for the heat dissipation of the residual temperature of the electronic water pump during secondary and subsequent pump stoppage, and the working principle and linkage logic thereof need to be combined with the secondary operation scene of the electronic water pump, and the specific implementation is as follows:

[0052] ​When the electronic water pump is started for the second time, the driving motor inside the pump body 2 is powered again to rotate the impeller in the pump head 3, the external liquid is sucked through the water inlet pipe 4 and delivered through the drain pipe 5, and after the liquid enters the sealing cover 6 along the guide pipe 7 to complete the real-time heat dissipation of the pump body 2, it will continuously flow into the cavity box 11 inside. At this time, the liquid flowing in the cavity box 11 will impact the several blades 31 fixed at equal angles outside the rotating shaft 30, driving the blades 31 to rotate around the axis of the rotating shaft 30; since one end of the rotating shaft 30 is fixedly connected to the middle of one side of the disc 32, the rotation of the blades 31 will synchronously drive the disc 32 to make circular motion outside one side of the cavity box 11, without the need for additional power source, fully utilizing the liquid flow energy of the electronic water pump itself during operation, and embodying the energy saving of the structure design.

[0053] When the disc 32 rotates, the limiting column 35 fixed at the edge thereof will make circular motion together with the disc 32; and since the limiting column 35 penetrates and is slidingly installed inside the rectangular frame 36, the circular motion of the limiting column 35 will generate a pushing force in the up-down direction on the rectangular frame 36, forcing the rectangular frame 36 to move reciprocally in the vertical direction. Since the middle of the bottom end of the rectangular frame 36 is fixedly connected to the top end of the piston rod 34, and the piston rod 34 penetrates and is slidingly installed in the slide 33 in the vertical direction, the reciprocating movement of the rectangular frame 36 will drive the piston rod 34 to slide up and down in the suction cylinder 37 under the constraint of the slide 33, completing the power transmission of the suction action.

[0054] When the piston rod 34 slides upward, the volume of the suction cylinder 37 inside increases and the pressure decreases, forming a negative pressure environment, at this time, the cooling liquid previously collected in the receiving tank 15, which absorbs the residual heat of the pump, is smoothly sucked into the inside of the suction cylinder 37 through the one-way liquid inlet valve pipe 38, when the piston rod 34 slides downward, the volume of the suction cylinder 37 inside decreases and the pressure increases, the cooling liquid in the suction cylinder 37 is pressed into the drain tank 14 through the one-way liquid outlet valve pipe 39 under the action of pressure.

[0055] Through the above-mentioned circulating suction process, the cooling liquid in the receiving tank 15 can be efficiently transferred to the drain tank 14 for re-storage, not only realizing the reuse of the cooling liquid, greatly reducing the cooling liquid supplement demand in high-frequency use scenarios such as semiconductor plant, data center, etc., reducing the cooling liquid consumption and manual maintenance workload, but also ensuring that the drain tank 14 always reserves sufficient cooling liquid, providing sufficient liquid guarantee for the next secondary residual heat dissipation of the electronic water pump after shutdown. The entire structure does not require manual intervention, relying entirely on the liquid flow driven by the operation of the electronic water pump itself, further perfecting the full-process automatic closed loop of real-time liquid cooling heat dissipation, pump residual heat dissipation, cooling liquid recovery and recycling, significantly improving the sustainability and reliability of the liquid cooling system, highlighting the creativity and practicality of the design.

[0056] When the electronic water pump continues to work for a period of time, the cooling liquid stored in the receiving tank 15 is gradually pumped out by the circulating pumping assembly, and the circulating pumping process will continue to run with the electronic water pump: at this time, the upward sliding of the piston rod 34 causes negative pressure in the suction cylinder 37, and since there is no sufficient cooling liquid in the receiving tank 15, external air enters the receiving tank 15 through the discharge end of the one-way valve 40, and then is sucked into the suction cylinder 37 through the one-way liquid inlet valve pipe 38, and finally enters the drain tank 14 inside through the one-way liquid discharge valve pipe 39 with the downward sliding of the piston rod 34.

[0057] The air entering the drain tank 14 will form tiny air bubbles in the liquid and drive the cooling liquid in the tank to roll, generating a continuous disturbance, which can accurately solve the problem of concentrated accumulation of impurities in the cooling liquid: during long-term operation of the electronic water pump, impurities such as debris falling from the heat dissipation fins 8 and tiny particles carried by the liquid will inevitably mix into the cooling liquid, and even if there is vibration when the pump is running, the cooling liquid in the drain tank 14 flows smoothly, and the impurities are still easy to slowly settle at the bottom of the drain tank 14 to form an accumulation layer; if there is no disturbance, the next time the pump is stopped and the limiting valve 21 is opened, the accumulated impurities will flow into the drain pipe 20 with the cooling liquid, which may block the drain head 24 or adhere to the surface of the pump body 2 and the heat dissipation fins 8, affecting the heat exchange efficiency. The disturbance driven by air can stir up the settled impurities in time, so that they are always uniformly suspended in the cooling liquid, avoiding the formation of concentrated accumulation and ensuring smooth flow of the subsequent cooling liquid delivery.

[0058] At the same time, the disturbance can also achieve temperature equalization of the cooling liquid in the drain tank 14: the side of the drain tank 14 close to the pump body 2 is easily affected by heat conduction from the motor, and the cooling liquid temperature is slightly higher, the side far away from the pump body 2 is relatively lower in temperature, and the residual heat in the early stage may also cause local temperature difference in the tank; if the cooling liquid with higher temperature is used for residual heat dissipation, its heat absorption saturation speed will be faster, which may lead to shorter heat dissipation duration, and the cooling liquid with lower temperature will be wasted due to insufficient utilization. The rolling disturbance driven by air can fully mix the hot and cold cooling liquids in the drain tank 14, eliminate the local temperature difference, and make the heat absorption capacity of the cooling liquid in all areas of the drain tank 14 consistent. When the electronic water pump is turned off next time and the limiting valve 21 is opened, the cooling liquid is sprayed on the pump body 2 and the heat dissipation fins 8 through the drain pipe 20 and the drain head 24, which can continuously absorb residual heat at a stable heat absorption efficiency, avoiding the "break" of heat dissipation caused by overheating of local cooling liquid, and ensuring that the motor temperature smoothly decreases to the safe interval, providing stable protection for residual heat dissipation after each pump stop.

[0059] It also needs to be explained that when the air is pressed into the drain tank 14, it will be discharged in real time through the filter screen pipe 41 at the top end of the drain tank 14, which has the functions of air permeability and filtration, which can not only ensure the smooth discharge of air and avoid the accumulation of air in the drain tank 14 to affect the operation of the circulating suction assembly, but also block external dust and impurities from entering the drain tank 14 to pollute the coolant, ensuring that the gas discharge process does not affect the cleanliness of the coolant and the subsequent heat dissipation effect.

[0060] It also needs to be explained that when the air is pressed into the drain tank 14, it will be discharged in real time through the filter screen pipe 41 at the top end of the drain tank 14, which has the functions of air permeability and filtration, which can not only ensure the smooth discharge of air and avoid the accumulation of air in the drain tank 14 to affect the operation of the circulating suction assembly, but also block external dust and impurities from entering the drain tank 14 to pollute the coolant, ensuring that the gas discharge process does not affect the cleanliness of the coolant and the subsequent heat dissipation effect.

[0061] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0062] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A liquid-cooled electronic water pump, comprising a pump base (1), a pump body (2) disposed at the top of the pump base (1), and a pump head (3) installed at one end of the pump body (2), characterized in that: One end of the pump head (3) is connected to a water inlet pipe (4), and the other end of the pump head (3) is connected to a drain pipe (5). A sealing cover (6) is fitted and sealed on the outside of the pump body (2). The top of the pump base (1) is fixedly connected to the outside of the sealing cover (6). Several heat dissipation fins (8) are fixedly installed around the outside of the pump body (2) at equal angles. Several flow guides (9) are opened through the several heat dissipation fins (8) at equal intervals. A conduit (7) is fixedly connected to the output end of the drain pipe (5), and the drain pipe (5) and the conduit (7) are in a fluid communication state. The output end of the conduit (7) is fixedly installed inside the sealing cover (6) on the side near the top. A waste heat dissipation component is provided on the outside of the sealing cover (6). A circulation suction component is provided on the end of the pump body (2) away from the pump head (3). The waste heat dissipation assembly includes a drain tank (14) and a receiving tank (15). The drain tank (14) is fixedly installed on the outside of the top of the sealing cover (6), and the receiving tank (15) is fixedly installed on the outside of the bottom of the sealing cover (6). The conduit (7) is provided with a sealing plug (16) in the opening end inside the sealing cover (6). The pump body (2) is fitted with a sliding ring frame (17) near the sealing plug (16). Limiting rods (18) are slidably installed inside both sides of the ring frame (17). The outer side of the sealing plug (16) is fixedly installed with the top of the ring frame (17). A drain pipe (20) is horizontally arranged inside the top of the sealing cover (6). The input end of the drain pipe (20) is fixedly installed inside the bottom of the drain tank (14). A limit valve (21) is fixedly connected inside the drain pipe (20) on the side close to the sealing plug (16). The valve stem end of the limit valve (21) is fixedly installed with a gear (22), and the bottom end of the gear (22) is meshed with a rack (23). One end of the rack (23) is fixedly installed with the top end of the ring frame (17). A return spring (29) is sleeved on the outside of the limiting rod (18). The bottom of the sealing cover (6) has several first through holes (26) that are evenly spaced through. A sealing strip (27) is slidably and sealingly installed on the bottom wall of the sealing cover (6) near the several first through holes (26). A second through hole (28) is opened through the interior of the sealing strip (27) near each first through hole (26). A connecting block (25) is fixedly installed on the top of one end of the sealing strip (27). One end of the connecting block (25) is fixedly installed to the bottom end of the ring frame (17). When the electric water pump is turned off, the motor inside the pump body (2) stops, there is no liquid flow in the drain pipe (5), the pressure inside the conduit (7) disappears, the reset spring (29) returns to its deformation, and pushes the ring frame (17) to reset along the limit rod (18). The ring frame (17) drives the sealing plug (16) to seal the opening end of the conduit (7). The rack (23) at the top of the ring frame (17) drives the gear (22) to rotate. At the same time, the sealing strip (27) is reset through the connecting block (25), so that the second through hole (28) is aligned with the first through hole (26). The residual liquid in the sealing cover (6) flows into the receiving box (15), and the limit valve (21) of the drain pipe (20) is opened. The coolant in the drain tank (14) drips onto the pump body (2) and the heat sink fins (8) through the drain head (24), absorbing the residual heat after the motor stops.

2. The liquid-cooled electronic water pump according to claim 1, characterized in that: The sealing cover (6) is fixed with a discharge tube (10) through the bottom end away from the conduit (7). A cavity box (11) is fixedly installed through the output end of the discharge tube (10). A discharge tube (12) is fixedly installed through the top end of the cavity box (11) away from the discharge tube (10). A flange (13) is fixed at the end of the discharge tube (12) away from the cavity box (11).

3. The liquid-cooled electronic water pump according to claim 1, characterized in that: One end of the limiting rod (18) is fixedly installed on the side wall of the sealing cover (6), and the other end of the limiting rod (18) is fixedly installed with a limiting block (19).

4. A liquid-cooled electronic water pump according to claim 1, characterized in that: The drain pipe (20) has several drain heads (24) fixedly installed at equal intervals inside the pump body (2).

5. A liquid-cooled electronic water pump according to claim 1, characterized in that: The two ends of the reset spring (29) are respectively fixedly installed on the outside of one side of the limiting block (19) and the outside of one side of the ring frame (17).

6. A liquid-cooled electronic water pump according to claim 2, characterized in that: The circulating suction assembly includes a disc (32) and a suction cylinder (37). The disc (32) is located on the outside of one side of the cavity box (11). The suction cylinder (37) is fixed on the outside of one side of the pump body (2) by a bracket. A rotating shaft (30) is installed inside the cavity box (11) through a sealed rotatable mechanism. The rotating shaft (30) passes through a section inside the cavity box (11). Several fan blades (31) are fixed around the outer circumference at equal angles. One end of the rotating shaft (30) is fixedly installed in the middle of one side of the disc (32).

7. A liquid-cooled electronic water pump according to claim 6, characterized in that: A limiting post (35) is fixedly installed at the edge of the disc (32). A rectangular frame (36) is slidably installed through the outside of the limiting post (35). A slide block (33) is fixedly installed on the outside of one side of the cavity box (11). A piston rod (34) is vertically slidably installed through the inside of the slide block (33). The top end of the piston rod (34) is fixedly connected to the middle of the bottom end of the rectangular frame (36). The piston end of the piston rod (34) is slidably sealed inside the suction cylinder (37).

8. A liquid-cooled electronic water pump according to claim 7, characterized in that: The bottom end of the suction cylinder (37) is fixedly installed with a one-way inlet valve pipe (38) and a one-way outlet valve pipe (39). The input end of the one-way inlet valve pipe (38) is fixedly installed inside the bottom end of the receiving box (15). The output end of the one-way outlet valve pipe (39) is fixedly installed inside the top end of the drain box (14). A one-way valve (40) is fixedly installed outside the top end of the receiving box (15). A filter screen pipe (41) is fixedly installed inside the top end of the drain box (14).

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