39results about "Cooling/ventillation arrangement" patented technology

Cooling of the end windings on a stator of the electric motor can be made more uniform if a physically-compliant, thermally-conductive cap is placed over the end windings. In one embodiment, a liquid coolant is sprayed on the outside of the cap. The cap serves to make the temperature more uniform in the end windings. In an alternative embodiment, a cover is placed over the cap with a coolant jacket formed between the cap and the cover. A coolant, such as transmission fluid or engine coolant, can be circulated in the coolant jacket.

The invention discloses a motor stator heat radiation structure. A motor comprises a housing, a stator core disposed in the housing and a motor winding wound on the stator core. The housing is internally provided with multiple heat conduction pipes each with two enclosed ends, the housing is provided with multiple vertical cooling channels, an upper horizontal radiating pipe and a lower horizontal radiating pipe of each heat conduction pipe are embedded into the stator winding, and vertical cooling pipes of the heat conduction pipes are disposed in the cooling channels. According to the invention, the heat conduction pipes are additionally arranged for heat dissipation, the original heat dissipation effect of the motor for the stator core is maintained, at the same time, heat generated by the stator winding is directly brought into the water channel of the housing by the heat conduction pipes through the end portion of the stator winding, and finally cooling media in the cooling channels bring the heat of the motor out. Under the condition that an original motor structure is not substantially changed, the heat dissipation performance of the whole motor is improved, the structure is simple, the cost is quite low, and the stability and the safety of the motor are greatly improved.

The invention relates to the technical field of electric spindles, in particular to a liquid metal temperature control system for an electric spindle. The liquid metal temperature control system for the electric spindle provided by the invention comprises a control system, an electric spindle housing and an electric spindle unit, wherein a closed coolant return pipe filled with liquid metal is arranged between the electric spindle housing and the electric spindle unit; the coolant return pipe is provided with an electromagnetic pump for pumping the liquid metal; and the electromagnetic pump isconnected with the control system. The liquid metal is adopted as a medium of a coolant, so that the thermal conductivity is good; the liquid metal which is not oxidized and of which the melting point temperature is close to the optimal working temperature of the electric spindle unit can be selected, the flow of the electromagnetic pump can be adjusted through the control system and the temperature of the coolant return pipe is effectively adjusted through changing the flow, so that the heat dissipation effect is further improved. In addition, the liquid metal temperature control system is compact in structure and reasonable in design; and a cooling and temperature control device does not need to be additionally arranged outside the electric spindle housing, so that the production cost is effectively reduced.

The invention discloses a liquid-cooled motor which comprises a casing, a front cover and a rear cover, wherein the casing is hollow cylinder; a motor component is arranged in the casing; one end of the casing is covered with the front cover, and the other end of the casing is covered with the rear cover; the casing comprises an outer shell, an inner shell and multiple radiating fins; the outer shell is cylindrical, and a water inlet, a water outlet and a connecting part connected to the inner shell are arranged on the outer shell; the inner shell is arranged in the outer shell through the connecting part; multiple connecting strips are further circumferentially arranged at intervals between the inner and outer shell, are shaped into straight strips, and extend in the axial direction of the inner shell; threaded holes are formed in the bottoms of the two ends of the connecting strips; a nick is formed in the top of one end of each connecting strip; multiple radiating fins are arranged between every two adjacent connecting strips. The liquid-cooled motor is simple in structure and convenient to operate, has a large cooling area, and can be rapidly cooled; due to the formation of the roundabout nicks, radiation effects of the radiating fins are utilized as much as possible, and the radiation efficiency is improved.

The invention discloses an automobile electronic oil pump driving system and relates to the field of automobile driving. The automobile electronic oil pump driving system comprises an oil pump, a brushless motor, a controller and a controller upper cover, the brushless motor comprises a motor core, a motor shell and a motor rear end cover, and the oil pump is installed at the output end of the brushless motor. The controller comprises a power supply, a power supply control module, an MCU module, a communication module, a pre-driving and driving module, an angle position sensor and a motor driving chip with a position estimation function; the controller switches an inductive mode in real time in a low-temperature cold start environment to acquire angle position data through the angle position sensor, and controls the rotating speed of the motor by adopting an inductive sine wave algorithm; a non-inductive mode is switched in real time in a position sensor failure environment, counter electromotive force of the brushless motor is collected through a motor driving chip with a position estimation function, and through cooperation with a position estimation algorithm of control software, the angle position of the motor is estimated, and control over the rotating speed of the motor is achieved.

The invention discloses an electric air compressor with a motor rotor cooling system. The electric air compressor comprises an impeller, an impeller back plate cover plate, a thrust bearing, a bearingcover and a motor which are sequentially arranged in the axial direction, an impeller air inlet hole is formed in the impeller, a back plate cover plate cooling hole is formed in the impeller back plate cover plate, a thrust bearing cooling hole and a bearing cover cooling hole are formed in the thrust bearing and the bearing cover respectively, air passes through holes in the impeller, the impeller back plate cover plate, the bearing and the bearing cover to reach between the motor rotor and a motor stator, and finally is discharged from a motor rear end cover. The electric air compressor effectively cools the motor rotor and does not need to be provided with an additional cooling device, so that the manufacturing cost and the use cost are reduced, and the assembly space is saved.

The invention discloses a dustproof motor, and relates to the technical field of motor dustproof structures, the dustproof motor comprises a motor shell and a rotating shaft fixing frame installed on the inner wall of the motor shell, a motor rotating shaft is rotatably installed on the motor shell and the rotating shaft fixing frame, a rotor is installed on the motor rotating shaft, and the motor rotating shaft is provided with a motor shaft. And a radiator is installed on the inner wall of the side, away from the rotating shaft fixing frame, of the motor shell, an extension section is arranged at one end of the motor rotating shaft, the extension section is sleeved with an automatic opening and closing sealing mechanism, and a filtering device is installed on the inner side wall of the motor shell. Through the arrangement of the fixed baffle, the movable baffle and the ventilation opening in the fixed baffle are automatically opened and closed according to the rotating state of the motor rotating shaft, normal heat dissipation can be achieved when the motor works and the ventilation opening is opened, and dust is prevented from entering when the motor stops working.

The invention discloses an internal circulation cooling structure of an all-sealed motor. The internal circulation cooling structure comprises a motor stator, a rotor and a rotary shaft; an axial flowfan which rotates along with the rotary shaft synchronously is arranged at one end of the rotor to reinforce air flow at the end part of the motor and to improve heat dissipation; rotor axial ventilating holes are formed in the rotor; under the effect of the axial flow fan, the air on the end part of the motor flows from one end of the rotor to the other end of the rotor by passing through the rotary shaft towards the axial ventilating holes of the rotor to accelerate internal heat transfer of the rotor; stator axial ventilating holes are formed in the outer side of a stator iron core in thecircumferential direction to realize internal air circulation flowing; and the stator axial ventilating holes provide a backflow path for the end part air, and the air is cooled by an external coolingstructure in the backflow process. The cooling structure disclosed in the invention can be realized easily, without needing a complex manufacturing process; and by virtue of the rotor axial ventilating holes, the rotor temperature can be lowered while temperature rise of a permanent magnet also can be suppressed, so that the cooling structure is applicable to various all-sealed motors with the external cooling structures, and can be combined and matched with other cooling structures.

The invention provides a hollow shaft sealing ring, a hollow shaft, a rotor structure, a motor and an electric automobile, wherein the hollow shaft sealing ring is used for sealing an oil inlet of thehollow shaft, an oil pipe hole is formed in the sealing ring, an oil inlet pipe is arranged in the oil pipe hole, the outer diameter of the oil inlet pipe is R5, the inner diameter of the oil pipe hole is R4, and R4 is larger than R5. According to the semi-closed sealing structure of the hollow shaft, cooling oil can be prevented from leaking along the inner wall of the bushing cavity when the rotor rotates at a high speed while the bushing cavity can be kept communicated with the outside, and the situation that oil cannot be sprayed due to the fact that pressure difference is formed betweenair pressure of the inner cavity and the outside of the oil throwing opening is avoided.

The invention relates to the technical field of water cooling structures, and discloses a novel water cooling structure of a water pump motor. The novel water cooling structure comprises a machine shell and a heat exchange cylinder arranged on the peripheral side of the machine shell in an attached and sleeving mode, wherein the inner surface of the cylinder wall of the heat exchange cylinder is provided with a flow channel cavity surrounding the machine shell, a refrigerant used for heat exchange and cooling of the machine shell is contained in the flow channel cavity, the peripheral side of the machine shell is sleeved with a fixing ring, at least one open groove is formed in the side, facing the heat exchange cylinder, of the fixing ring, a first inserting groove and a second inserting groove which are parallel to the axial direction of the heat exchange cylinder are oppositely formed in the groove wall of the open groove, a second inserting strip is arranged in the second inserting groove in a sliding mode, and one end of the second inserting strip is elastically connected with the corresponding groove wall of the second inserting groove. By means of the heat exchange cylinder additionally arranged on the machine shell and a plurality of heat dissipation blocks on the heat exchange cylinder, heat conducted to the machine shell by a stator can be subjected to heat exchange and cooling, so the water pump motor can work at a normal operating temperature, working efficiency is guaranteed, and the water pump motor is prevented from losing efficacy or being damaged at a high temperature.

The invention belongs to the technical field of motors, and particularly relates to a three-phase permanent magnet synchronous variable frequency motor. The motor comprises a motor base; a plurality of mounting grooves are formed in a rotor core in the radial direction, and magnetic isolation grooves are obliquely formed in the two ends of each mounting groove; and permanent magnets are inserted into the mounting grooves; a rotating shaft is fixed to the axis of the rotor core, mounting discs are attached to the two ends of the rotor core, and a plurality of fan blades are fixed to the outer end faces of the mounting discs in the circumferential direction. The magnetic isolation grooves are filled with magnetic isolation insulating layers; the rubber insulating slurry is prepared by foaming; a plurality of foaming holes are formed in the magnetic isolation insulating layer, and the foaming holes are communicated with one another; a flow guide pipe is inserted and fixed between the twomounting discs, and is inserted into the magnetic isolation grooves; a plurality of flow guide cavities are uniformly formed in the outer wall of the flow guide pipe and are communicated with the magnetic isolation grooves; the flow guide pipe is made of a through-hole foamed aluminum material; and the installation stability of the permanent magnet on the rotor core is improved, and the heat dissipation effect of the rotor core is improved.

The invention relates to a cooling system for a drive motor in a twin-screw extruder. The cooling system is mainly used for cooling the drive motor in the twin-screw extruder so as to ensure that the drive motor is not overheated. The cooling system is characterized by comprising a drive motor box (2) which is mounted on the most front end of the twin-screw extruder (1), a cooling hole (2.1) is formed in the side wall of the drive motor box (2), the top of the drive motor box (2) is connected with an aspirator pump (3), and an air inlet of the aspirator pump (3) is connected with an air inlet pipe (4). The cooling system can be used for effectively cooling the drive motor, thereby guaranteeing the long service life of the drive motor.

The invention proposes an open-type suspension variable frequency motor and a method for assembling the same. The motor comprises a machine base. The inner wall of the base is provided with at least two wide ribs. The outer wall of the machine base is provided with an air-out box and a cooling box. The air-out box is provided with a centrifugal blower. The cooling box is provided with an air-in port. The air-out box is provided with an air-out port. The machine base is provided with a stator and a rotor assembled in the stator. The method comprises: 1) welding the wide ribs onto the inner wall of the machine base; 2) heating the machine base and placing the stator in the machine base; 3) making the stator in interference-fit with the wide ribs; and 4) assembling the rotor in the stator and letting the rotor and the end cover cooperatively connected. The motor proposed by the invention has a simple structure. Compared with the currently available temperature reduction through a built-in fan, the temperature reducing effect of the invention is not subject to the influence of the low speed or the high speed of the rotor. With the method of the invention, the stator can be fixed in the machine base, and at the same time, the assembling method is highly efficient, posing no influence on the axial direction ventilation of the machine base. When the assembled motor is used, a significant temperature reducing effect can be achieved so as to ensure its use safety.

The invention designs a novel wheel hub motor heat radiation controller by combining a braking energy recovery system, which full utilizes braking energy to solve the problem of motor heat radiation.The novel wheel hub motor heat radiation controller comprises a signal acquisition circuit, a controller chip and a water pump drive circuit. Based on the braking status monitored by the signal acquisition circuit in real time, battery SOC estimation value and hub motor temperature status, the controller chip controls the water pump drive circuit to drive the pump to continuously circulate the coolant, therefore, achieving the hub motor cooling function, reducing the hub motor temperature, reducing motor losses, increasing the life of the motor and vehicle battery and improving brake energy utilization.

The invention discloses an air duct assembly of a motor and the motor with the air duct assembly. The air duct assembly comprises a case, a middle shaft part, a fan cover, a rotor and an impeller, wherein the case comprises a body; the middle shaft part is arranged at the upper end of the body; a first through hole is formed in the middle shaft part; the fan cover is arranged at the upper part ofthe body and is in clearance fit with the body; a first chamber is defined by the fan cover and the body; a first step surface is arranged at the lower part of the fan cover; the upper end of the bodyis propped against the first step surface; the rotor is accommodated into the first chamber; the rotor is rotationally connected to the inside of the first through hole; the impeller is arranged in the first chamber; a second through hole is formed in the impeller; and the impeller sleeves the middle shaft part through the second through hole. According to the air duct assembly of the motor disclosed by the embodiment of the invention, a predetermined clearance is kept between the upper part of the fan cover and the impeller, and the lower part of the fan cover is connected with a peripheralwall of the body in a matched manner, so that positioning in the axial direction is accurate, assembly operation is convenient and fast and the condition that the work efficiency of a fan does not easily change is ensured.

The invention discloses a refrigerant transmission sealing structure of a superconducting motor, which comprises a stationary intake pipe, a rotating intake pipe and an air returning pipe. The stationary intake pipe and the rotating intake pipe are connected and a laval nozzle passage is formed at the joint. A vacuum sandwich tube is arranged between the stationary intake pipe and the air returning pipe, and the outer wall of the vacuum sandwich tube is provided with a magnetic fluid sealing device. Magnetic fluid is injected into the magnetic fluid sealing device. The joint of the stationaryintake pipe and the rotating intake pipe is provided with a labyrinth sealing structure for isolating the intake air and the return air. The structure of the invention can realize the goals of not toohigh machining precision and assembly difficulty reduction on the premise of ensuring no change in the refrigerant transmission rotatory sealing topological structure of the existing superconductingmotor and the internal leakage rate of the existing structure.

The invention discloses a new energy automobile driving motor protection shell which comprises a shell mechanism, a damping mechanism, a heat dissipation mechanism and a waterproof mechanism, wherein the damping mechanism is located in the shell mechanism, the heat dissipation mechanism is located in the shell mechanism and on the outer wall of the shell mechanism, and the waterproof mechanism is located in the heat dissipation mechanism. When the protection shell is impacted, under the action of inertia, the inner shell is slidably connected to the outer surface of the motor in a sleeving mode, a second layer of protection is provided for the motor, meanwhile, during normal running, the inner shell slides back to the original position, the inner shell is slidably arranged, the flexibility of the device is improved, in the normal running process of the motor, the inner shell does not provide secondary protection for the motor, and heat dissipation of the motor and normal operation of the motor are facilitated. The device can provide double-layer protection for the motor, the outer shell protects the motor, the inner shell reduces impact force generated by collision, the motor is buffered, damage to the motor is prevented, and the device is suitable for various motors of different sizes.

The invention relates to a concrete mixer truck motor, which includes a casing, a stator, a rotor, a fan, a wind cover and a storage battery. A rotating shaft is arranged in the middle of the casing, the stator is arranged outside the rotor, and the casing is A baffle is provided at one end of the baffle, the fan is provided on one side of the baffle, the stator and the rotor are provided on the other side of the baffle, and the windshield is provided outside the fan, The storage battery is arranged below the fan, and heat dissipation ribs are radially distributed on the outer wall of the housing. The heat dissipation ribs are covered with an outer cover plate, and the outer cover plate is provided with heat dissipation grooves and heat dissipation holes. The heat dissipation grooves A cooling fin is arranged in the center, and the cooling fin is arranged in a dislocation manner with the cooling hole. The motor designed by the invention can effectively avoid the occurrence of circuit burnout caused by excessive temperature, thereby greatly improving the safety and stability of the concrete mixer truck.

The invention discloses a permanent-magnet direct-driving motor for a sawing machine. The permanent-magnet direct-driving motor comprises a front end cover, a shell, a stator assembly, a rotor assembly, a shaft, a rear end cover, a rear cover, a fan and a fan support, wherein the stator assembly is tightly arranged on an inner wall of the shell in a matching way, the rotor assembly is connected with an outer wall of the shaft via a key, the front end cover is fixedly connected with a front end of the shell, the rear end cover is fixedly connected with a rear end surface of the shell, the rearcover is connected with a rear end surface of the rear end cover, four cooling devices are uniformly arranged at circumference of an outer wall of the shell, each cooling device comprises cooling fingroups, the cooling fin groups are symmetrically arranged along a circumference bisectrix h, and included angles Alpha between the cooling fin groups and a horizontal direction are 45 degrees, the heights of outer ends of cooling fins of the same cooling fin groups are equal, an included angle Beta between each cooling fin and the horizontal direction is 45 degrees, the fan support is fixedly arranged on the rear end cover, and the fan is connected with the fan support. Air-cooling heat dissipation is employed, and the permanent-magnet direct-driving motor is low in cost, good in cooling effect, novel in structure and reliable in matching.

The invention relates to the technical field of personnel conveying, and discloses a vertical conveying device for maintenance personnel of wind power generation equipment. The vertical conveying device comprises a box body, a mounting support, a counterweight structure, a first pulley mechanism and a second pulley mechanism; the mounting support comprises an upper support and a lower support, the first pulley mechanism is mounted above the lower support, and the second pulley mechanism is mounted below the lower support and located above the counterweight structure; a connecting frame is mounted at the top of the box body, one end of a steel wire rope is connected with the connecting frame, and the other end of the steel wire rope is connected to the top of the counterweight structure after the steel wire rope bypasses the first pulley mechanism and the second pulley mechanism; a water tank is mounted on the upper support and connected with a flow divider through a water pipe, and a water spraying opening of the flow divider is formed above the second pulley mechanism; an air blowing device is arranged on the side of the first pulley mechanism. The problem that the wind power generation equipment is very inconvenient to maintain is solved, meanwhile, heat energy generated by friction between the steel wire rope and pulleys is relieved through water spraying and air blowing, the cooling and heat dissipation effects are achieved, and the service life is prolonged.