Motor cooling device

Abstract

The present invention relates to the field of motor technology, and more particularly to a motor heat dissipation device, comprising a base and a motor mounted on the base, a mounting frame fixed to the side wall of the base, a mounting ring connected to the inner wall of the mounting frame through a bracket, a sleeve rotatably connected to the inner wall of the mounting ring, the sleeve sleeved on the output shaft of the motor, a fan blade and a control box fixed to the side wall of the sleeve, a mode switching mechanism provided inside the control box, a plurality of water bags installed on the inner wall of the base and a plurality of heat dissipation slots, and a pump slot provided at the bottom of the base. The advantages are: when the motor speed decreases, the impeller will recover after a delay, so that water cooling and heat dissipation can be maintained when the speed is initially reduced, thereby ensuring the smooth completion of the speed transition state, and when the motor speed drops suddenly, the water cooling process is directly closed, and the impeller is no longer hindered, thereby avoiding the resistance it encounters at low speed affecting the effective rotation of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor heat dissipation device. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy. The motor uses an energized coil to generate a rotating magnetic field and acts on the rotor to form a magneto-electrical power rotation torque. The motor is divided into DC motors and AC motors according to the power supply used.

[0003] The motor will generate a lot of heat when working. If the heat is not dissipated in time, it will affect the normal operation of the generator. Therefore, the motor has high requirements for the heat dissipation effect. The heat dissipation effect of the motor directly affects the working efficiency of the motor and may even cause damage to the motor. The heat dissipation mechanism of the existing motor cannot effectively match the motor working conditions during operation, which can easily cause energy waste and poor motor operation. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of poor heat dissipation in the prior art and to propose a motor heat dissipation device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a motor heat dissipation device, comprising a base and a motor installed on the base, a mounting frame is fixed on the side wall of the base, the inner wall of the mounting frame is connected to a mounting ring through a bracket, the inner wall of the mounting ring is rotatably connected to a sleeve, the sleeve is sleeved on the output shaft of the motor, the side wall of the sleeve is fixed with fan blades and a control box, the interior of the control box is provided with a mode changing mechanism, the inner wall of the base is installed with multiple water bags and multiple heat dissipation grooves, the lower part of the base is provided with a pump groove, the interior of the pump groove is provided with a pumping mechanism, the side wall of the pump groove is provided with two symmetrical transfer grooves, the two transfer grooves are connected by a circulation pipe, the circulation pipe runs through multiple heat dissipation grooves and water bags, the side wall of the base is provided with a cooling groove, the circulation pipe runs through the cooling groove, the outer wall of the base is fixed with a heat exchange sleeve connected to the interior of the cooling groove, and the side wall of the heat exchange sleeve is penetrated and fixed with multiple heat exchange rods.

[0006] In the above-mentioned motor cooling device, the pumping mechanism includes a rotating shaft that is sealed and rotatably connected to the inner wall of the pump groove, a rotating rod is fixed to the side wall of the rotating shaft, and the inner bottom of the pump groove is connected to a pressure plate through a reset spring. The pressure plate is sealingly and slidably connected to the inner wall of the pump groove, and the two transfer grooves are each provided with a one-way valve inside and lead to opposite directions.

[0007] In the above-mentioned motor heat dissipation device, a driving gear is fixed to the end of the rotating shaft, a clearance hole is opened at the bottom of the mounting frame, and the inner wall of the clearance hole is rotatably connected to a driving gear, and the driving gear is meshed with the driving gear.

[0008] In the above-mentioned motor cooling device, the mode changing mechanism includes a push plate connected to the bottom of the control box through a telescopic spring, the push plate is sealed and slidably connected to the inner wall of the control box, a push rod is fixed to the bottom of the push plate, the push rod passes through the control box and is fixed with a mounting plate, and the side wall of the mounting plate is rotatably connected with a rotating wheel.

[0009] In the above-mentioned motor heat dissipation device, the inner wall of the control box is rotatably connected to the deflection plate through a torsion spring, the inner wall of the control box is fixed with a block that abuts against the deflection plate, the side wall of the deflection plate is penetrated by a reflux hole, an electromagnetic valve is provided inside the reflux hole, the side wall of the deflection plate is embedded with a piezoelectric plate, the side wall of the deflection plate is fixed with a deformation plate corresponding to the position of the piezoelectric plate, and the inner wall of the control box is fixed with an extrusion spring corresponding to the position of the deformation plate.

[0010] In the above-mentioned motor heat dissipation device, a control box is fixed to the inner wall of the regulating box, a bladder, a bottom switch and a partition are fixed to the inner wall of the control box, a push plate is fixed to the upper end of the bladder, the push plate is connected to a slide plate through a push rod, the push rod and the partition slide through a sealed slide, a large hole and a small hole are opened through the side wall of the slide, a one-way valve is provided inside the large hole, a connecting spring and an independent switch are fixed to the side wall of the partition, a connection switch is fixed to the end of the connecting spring, a sliding sleeve is fixed to the side wall of the push plate, and the inner wall of the sliding sleeve is connected to a pressure rod through a slow-release spring.

[0011] Compared with the prior art, the advantages of the present invention are:

[0012] The cooling tank is filled with dichloromethane, and the heat exchange jacket is filled with water. The density of dichloromethane is greater than that of water, and its boiling point is lower than that of water. After absorbing heat and vaporizing at the bottom, it will transfer upward to the water in the form of bubbles. After being rapidly cooled, it will liquefy and return to the cooling tank, thereby completing self-lifting and heat dissipation to maintain the low temperature state inside the cooling tank.

[0013] The fan blades are rotated to drive the airflow to flow quickly, so that the airflow velocity around the motor increases, and the self-heating efficiency of the motor is improved. At the same time, the presence of the heat dissipation slot increases the contact area between the airflow and the motor, and improves the convection cooling effect;

[0014] The coolant circulates in the circulation pipe to achieve water cooling and heat dissipation, and the presence of the water bag can improve the efficiency of heat transfer of the motor. The coolant and the dichloromethane inside the cooling tank complete heat exchange and cooling, achieving continuous water cooling;

[0015] When the motor speed is high and the heat generation increases, timely and effective water cooling is provided, so that the motor can quickly dissipate heat and maintain efficient operation;

[0016] When the motor speed decreases, the rotor will recover after a delay, so that water cooling can be maintained when the speed is initially reduced, thereby ensuring the smooth completion of the speed transition state;

[0017] When the speed of the motor drops suddenly, the water cooling process is directly shut down and the impeller is no longer hindered, thereby preventing the resistance it encounters at low speed from affecting the effective rotation of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a motor heat dissipation device proposed by the present invention;

[0019] Figure 2 for Figure 1 Cross-sectional view in the A direction;

[0020] Figure 3 for Figure 1 Cross-sectional view in the B direction;

[0021] Figure 4 A schematic diagram of the structure of a control box part of a motor heat dissipation device proposed by the present invention;

[0022] Figure 5 This is a schematic structural diagram of a control box portion of a motor heat dissipation device proposed by the present invention.

[0023] In the figure: 1 base, 2 motor, 3 mounting frame, 4 bracket, 5 mounting ring, 6 sleeve, 7 fan blade, 8 heat dissipation groove, 9 control box, 10 give way hole, 11 driving gear, 12 rotating shaft, 13 driving gear, 14 rotating rod, 15 pump groove, 16 reset spring, 17 pressure plate, 18 transfer groove, 19 circulation pipe, 20 water bag, 21 heat exchange sleeve, 22 heat exchange rod, 23 telescopic spring, 24 pushing plate, 25 push rod, 26 mounting plate, 27 rotating wheel, 28 deflection plate, 29 block, 30 control box, 31 reflux hole, 32 extrusion spring, 33 deformation plate, 34 piezoelectric plate, 35 pushing plate, 36 bladder, 37 push rod, 38 slide plate, 39 large hole, 40 small hole, 41 partition, 42 bottom switch, 43 connecting spring, 44 switch on, 45 independent switch, 46 sliding sleeve, 47 slow release spring, 48 pressure rod, 49 cooling groove. DETAILED DESCRIPTION

[0024] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Example

[0025] Reference Figure 1-5, a motor heat dissipation device comprises a base 1 and a motor 2 mounted on the base 1, a mounting frame 3 is fixed to the side wall of the base 1, a mounting ring 5 is connected to the inner wall of the mounting frame 3 through a bracket 4, a sleeve 6 is rotatably connected to the inner wall of the mounting ring 5, the sleeve 6 is sleeved on the output shaft of the motor 2, a rubber ring is provided on the inner wall of the sleeve 6, and the sleeve 6 is in an interference state with the output shaft of the motor 2 when connected, and deformation is used to complete effective tightening, so that the motor 2 can drive the sleeve 6 to rotate, a fan blade 7 and a control box 9 are fixed to the side wall of the sleeve 6, a mode changing mechanism is provided inside the control box 9, a plurality of water bags 20 are installed on the inner wall of the base 1 and a plurality of heat dissipation grooves 8 are opened, a pump groove 15 is opened at the lower part of the base 1, a pumping mechanism is provided inside the pump groove 15, and two symmetrical transfer grooves 18 are opened on the side wall of the pump groove 15, the two transfer grooves 18 are connected by a circulation pipe 19, and the circulation pipe 19 runs through the plurality of heat dissipation grooves 8 and the water bag 20;

[0026] A cooling groove 49 is provided on the side wall of the base 1, and the circulation pipe 19 passes through the cooling groove 49. A heat exchange jacket 21 connected to the inside of the cooling groove 49 is fixed on the outer wall of the base 1, and a plurality of heat exchange rods 22 are fixed through the side wall of the heat exchange jacket 21. The cooling groove 49 is filled with dichloromethane, and the heat exchange jacket 21 is filled with water. The density of dichloromethane is greater than that of water, and the boiling point is lower than that of water. After absorbing heat and vaporizing at the bottom, it will transfer upward to the water in the form of bubbles, so that after being rapidly cooled, it will liquefy and return to the cooling groove 49, thereby completing self-lifting heat dissipation and maintaining the low temperature state inside the cooling groove 49. The presence of the heat exchange rods 22 can improve the heat transfer efficiency, thereby realizing rapid heat dissipation of the water flow.

[0027] When the motor 2 is working, it will drive the sleeve 6 to rotate, thereby driving the fan blades 7 to rotate. The rotation of the fan blades 7 drives the airflow to flow rapidly, thereby increasing the airflow velocity around the motor 2 and improving the self-heating efficiency of the motor 2. At the same time, the presence of the heat dissipation groove 8 increases the contact area between the airflow and the motor 2, thereby improving the convection cooling effect.

[0028] The pumping mechanism includes a rotating shaft 12 which is rotatably connected to the inner wall of the pump groove 15 in a sealed manner. A rotating rod 14 is fixed to the side wall of the rotating shaft 12. A pressing plate 17 is connected to the inner bottom of the pump groove 15 through a return spring 16. The pressing plate 17 is slidably connected to the inner wall of the pump groove 15 in a sealed manner. Both transfer grooves 18 are provided with one-way valves which lead to opposite directions.

[0029] During the rotation of the rotating shaft 12, the rotating rod 14 will be driven to rotate, so that the rotating rod 14 will be squeezed with the pressure plate 17 during the rotation, thereby pushing the pressure plate 17 to move downward, and the pressure plate 17 squeezes the coolant at the bottom of the pump groove 15, and the pressure plate 17 is then moved up and reset under the elastic force of the reset spring 16, thereby completing the reciprocating piston movement, and then realizing the pumping of the coolant, so that the coolant can circulate in the circulation pipe 19, and then realize water cooling. The presence of the water bag 20 can improve the efficiency of heat transfer of the motor 2, and the coolant and the dichloromethane inside the cooling tank 49 complete heat exchange and cooling, and realize continuous water cooling.

[0030] A driving gear 13 is fixed to the end of the rotating shaft 12 , a clearance hole 10 is opened at the bottom of the mounting frame 3 , and a driving gear 11 is rotatably connected to the inner wall of the clearance hole 10 , and the driving gear 11 is meshed with the driving gear 13 .

[0031] The mode change mechanism includes a push plate 24 connected to the bottom of the control box 9 through a telescopic spring 23, the push plate 24 is sealed and slidably connected to the inner wall of the control box 9, a push rod 25 is fixed to the bottom of the push plate 24, the push rod 25 passes through the control box 9 and is fixed with a mounting plate 26, and a side wall of the mounting plate 26 is rotatably connected with a rotating wheel 27, and the outer surface of the rotating wheel 27 includes an elastic belt, so that when it contacts the driving gear 11, the driving gear 11 can be effectively driven by the extrusion force;

[0032] In the process of the regulating box 9 rotating with the sleeve 6, the rotating wheel 27 is subjected to the centrifugal force and tends to approach the inner wall of the mounting frame 3. When the speed of the motor 2 is high, the centrifugal force is strong, and the rotating wheel 27 will overcome the elastic force of the propulsion plate 24 and roll along the inner wall of the mounting frame 3. When it moves to the position of the driving gear 11, the rotating wheel 27 will produce effective extrusion on the driving gear 11, thereby driving the driving gear 11 to rotate under the action of friction, so that the driving gear 11 can rotate the driving gear 13, and then the rotating shaft 12 rotates, driving the coolant to flow, thereby improving the heat dissipation effect of the motor 2. When the speed of the motor 2 is high and the heat generation increases, timely and effective heat dissipation is provided, so that the motor 2 can quickly dissipate heat and maintain efficient operation.

[0033] The inner wall of the control box 9 is rotatably connected with a deflection plate 28 through a torsion spring, a block 29 abutting against the deflection plate 28 is fixed to the inner wall of the control box 9, a reflux hole 31 is penetrated through the side wall of the deflection plate 28, an electromagnetic valve is arranged inside the reflux hole 31, a piezoelectric plate 34 is embedded in the side wall of the deflection plate 28, a deformation plate 33 corresponding to the position of the piezoelectric plate 34 is fixed to the side wall of the deflection plate 28, and an extrusion spring 32 corresponding to the position of the deformation plate 33 is fixed to the inner wall of the control box 9;

[0034] When the motor 2 runs at a high speed, the propulsion plate 24 will move downward under the action of centrifugal force, so that the liquid on the upper part of the deflection plate 28 is subjected to negative pressure, which pushes the deflection plate 28 to rotate, and then transfers from the gap to make up for the vacancy caused by the movement of the propulsion plate 24. Then the pressure difference decreases and disappears, and the deflection plate 28 rotates and resets. Since the deflection plate 28 is blocked by the block 29, the propulsion plate 24 cannot be directly reset, so that even if the wheel 27 is squeezed with the outside, it cannot automatically reset, so that the pressure can be effectively transferred to the squeezed object, that is, the pressure is effectively applied to the driving gear 11 to ensure the effective driving of the driving gear 11. If you want to reset, you only need to open the solenoid valve inside the reflux hole 31 to achieve reset, which can be operated when the speed of the motor 2 is reduced.

[0035] A control box 30 is fixed to the inner wall of the control box 9, and a bladder 36, a bottom switch 42 and a partition 41 are fixed to the inner wall of the control box 30. A push plate 35 is fixed to the upper end of the bladder 36. The bladder 36 is filled with electrorheological fluid, which solidifies and expands when energized. The push plate 35 is connected to a slide plate 38 through a push rod 37. The push rod 37 and the partition 41 penetrate and slide in a sealed manner. A large hole 39 and a small hole 40 are penetrated through the side wall of the slide plate 38. A one-way valve is provided inside the large hole 39. A connecting spring 43 and an independent switch 45 are fixed to the side wall of the partition 41. A switch 44 is fixed to the end of the connecting spring 43. A sliding sleeve 46 is fixed to the side wall of the push plate 35. The inner wall of the sliding sleeve 46 is connected to a pressure rod 48 through a slow-release spring 47.

[0036] When the speed of the motor 2 decreases, the centrifugal force on the wheel 27 decreases. Under the elastic force of the telescopic spring 23, the push plate 24 tends to reset, so that the force is transmitted to the deflection plate 28 through the liquid, causing the deformation plate 33 to deform and sink, and then act on the piezoelectric plate 34, so that the piezoelectric plate 34 will generate electricity when it is pressed, and then disappear, and then act on the electrorheological fluid in the bag 36, so that the electrorheological fluid solidifies instantly, and then expands and squeezes the push plate 35, so that the push plate 35 drives the slide plate 38 to move, and the movement of the push plate 35 itself will cause the switch 44 to be pressed, and the moving direction of the slide plate 38 at this time is consistent with the conduction state of the one-way valve inside the large hole 39, so the slide plate 38 can be quickly transferred;

[0037] Then the electrorheological fluid is powered off and restored to liquid state, and the bag 36 will restore to its initial state under the action of elastic force, thereby driving the push plate 35 to reset. Since the slide plate 38 moves in the opposite direction, the large hole 39 is not conductive, and the rapid transfer of the fluid cannot be achieved by relying only on the small hole 40, resulting in a slow reset speed of the slide plate 38, which makes the time for the push plate 35 to finally press the bottom switch 42 longer, and finally the bottom switch 42 is pressed. After the switch 44 and the bottom switch 42 are both pressed, the electromagnetic valve inside the reflux hole 31 will open. Therefore, when the speed of the motor 2 decreases, the wheel 27 will restore to its state after a delay, so that when the speed is initially reduced, water cooling can be maintained to ensure the smooth completion of the speed transition state;

[0038] When the speed of the motor 2 drops suddenly, the reverse thrust on the propulsion plate 24 increases significantly, resulting in a higher instantaneous voltage generated by the piezoelectric plate 34, causing the electrorheological fluid to expand more, causing the push plate 35 to move excessively, causing the pressure rod 48 to press the independent switch 45, and at the same time compressing the slow-release spring 47 to transfer to the inside of the sliding sleeve 46. After the independent switch 45 is pressed, the solenoid valve inside the reflux hole 31 is directly activated, so that the water cooling process is directly closed, and the runner 27 is no longer hindered, thereby preventing the resistance it encounters at low speed from affecting the effective rotation of the motor 2. In the reset process, the existence of the slow-release spring 47 can ensure that the pressure rod 48 and the independent switch 45 are in squeezing contact for a certain period of time, thereby ensuring the opening time of the reflux hole 31 and giving the runner 27 enough reset time;

[0039] When the speed increases further, the deflection of the deflection plate 28 will cause the deformation plate 33 and the extrusion spring 32 to be squeezed, thereby triggering the piezoelectric plate 34 to generate electricity, so that the push plate 35 can move, and then under this action, the bottom switch 42 and the on switch 44 are pressed and restored to a state, so that the solenoid valve inside the return hole 31 is closed. It should be emphasized that the bottom switch 42 and the on switch 44 are switches that are powered on by pressing once and powered off by pressing again, and the solenoid valve will only be triggered to be powered on when both are turned on at the same time. The independent switch 45 is different. It is directly powered off after being pressed and released, and the opening and closing of the solenoid valve can be controlled independently. The types of switches are all existing technologies and are not described here.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor heat dissipation device, comprising a base (1) and a motor (2) mounted on the base (1), characterized in that: A mounting frame (3) is fixed to the side wall of the base (1); a mounting ring (5) is connected to the inner wall of the mounting frame (3) via a bracket (4); a sleeve (6) is rotatably connected to the inner wall of the mounting ring (5); the sleeve (6) is sleeved on the output shaft of the motor (2); fan blades (7) and a control box (9) are fixed to the side wall of the sleeve (6); a mode switching mechanism is provided inside the control box (9); a plurality of water bags (20) are installed on the inner wall of the base (1) and a plurality of heat dissipation grooves (8) are provided; a pump groove (15) is provided at the lower part of the base (1); A pumping mechanism is provided inside the pump groove (15); two symmetrical transfer grooves (18) are provided on the side wall of the pump groove (15); the two transfer grooves (18) are connected via a circulation pipe (19); the circulation pipe (19) penetrates a plurality of heat dissipation grooves (8) and a water bag (20); a cooling groove (49) is provided on the side wall of the base (1); the circulation pipe (19) penetrates the cooling groove (49); a heat exchange sleeve (21) connected to the interior of the cooling groove (49) is fixed on the outer wall of the base (1); a plurality of heat exchange rods (22) are fixedly penetrated on the side wall of the heat exchange sleeve (21); The mode change mechanism comprises a propulsion plate (24) connected to the inner bottom of the control box (9) via a telescopic spring (23); the propulsion plate (24) is sealingly and slidably connected to the inner wall of the control box (9); a push rod (25) is fixed to the bottom of the propulsion plate (24); the push rod (25) passes through the control box (9) and is fixed to a mounting plate (26); a side wall of the mounting plate (26) is rotatably connected to a rotating wheel (27); The inner wall of the control box (9) is rotatably connected to a deflection plate (28) via a torsion spring, a stopper (29) abutting against the deflection plate (28) is fixed to the inner wall of the control box (9), a return hole (31) is formed through the side wall of the deflection plate (28), a solenoid valve is provided inside the return hole (31), a piezoelectric plate (34) is embedded in the side wall of the deflection plate (28), a deformation plate (33) corresponding to the position of the piezoelectric plate (34) is fixed to the side wall of the deflection plate (28), and an extrusion spring (32) corresponding to the position of the deformation plate (33) is fixed to the inner wall of the control box (9); A control box (30) is fixed to the inner wall of the control box (9), a bladder (36), a bottom switch (42) and a partition (41) are fixed to the inner wall of the control box (30), a push plate (35) is fixed to the upper end of the bladder (36), the push plate (35) is connected to a slide plate (38) via a push rod (37), the push rod (37) and the partition (41) penetrate and slide in a sealed manner, a large hole (39) and a small hole (40) are penetrated through the side wall of the slide plate (38), a one-way valve is provided inside the large hole (39), a connecting spring (43) and an independent switch (45) are fixed to the side wall of the partition (41), a switch (44) is fixed to the end of the connecting spring (43), a sliding sleeve (46) is fixed to the side wall of the push plate (35), and the inner wall of the sliding sleeve (46) is connected to a pressure rod (48) via a slow-release spring (47); The pumping mechanism comprises a rotating shaft (12) which is rotatably connected to the inner wall of the pump groove (15) and penetrates therethrough in a sealing manner. A rotating rod (14) is fixed to the side wall of the rotating shaft (12). The inner bottom of the pump groove (15) is connected to a pressure plate (17) via a return spring (16). The pressure plate (17) is slidably connected to the inner wall of the pump groove (15) in a sealing manner. Both transfer grooves (18) are provided with one-way valves which lead to opposite directions. A driving gear (13) is fixed to the end of the rotating shaft (12); a clearance hole (10) is provided at the bottom of the mounting frame (3); a driving gear (11) is rotatably connected to the inner wall of the clearance hole (10); and the driving gear (11) is meshed with the driving gear (13); The interior of the cooling tank (49) is filled with dichloromethane, and the interior of the heat exchange jacket (21) is filled with water. The density of dichloromethane is greater than that of water, and its boiling point is lower than that of water. After absorbing heat and vaporizing at the bottom, dichloromethane is transferred upward into the water in the form of bubbles. After being rapidly cooled, it is liquefied and returned to the cooling tank (49), thereby completing self-lifting and heat dissipation, and maintaining a low temperature state inside the cooling tank (49). The presence of the heat exchange rod (22) can improve the heat transfer efficiency, thereby achieving rapid heat dissipation by water flow.

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