11results about How to "Solve heat dissipation difficulties" patented technology

This utility model belongs to the field of lubrication and sealing of drive axles in engineering machinery, and in particular, a semi-sealed lubrication structure for the front-stage reduction gearbox of an engineering machinery drive axle. It includes a connecting housing for the front-stage reduction gearbox, the exterior of which is connected to the main reducer via a bearing housing. Inside the connecting housing and the main reducer, a spiral bevel gear pair is installed for power transmission. A bearing is located between the spiral bevel gear pair and the bearing housing, and an internal gear ring is fitted onto the spiral bevel gear pair. An oil retainer ring is provided within the oil reservoir, comprising an annular portion and a cylindrical portion. The annular portion covers the lubricating oil hole, and the cylindrical portion abuts against the gear ring portion of the internal gear ring. This utility model adopts a semi-closed cavity structure, where the axle oil and the primary transmission oil are not completely isolated, achieving a certain heat dissipation effect. Simultaneously, it retains a semi-isolated oil cavity, preserving the fluidity of the lubricating oil. The structure is simple and the cost is low.

An embodiment of the present invention provides a phased array antenna test module, which relates to the field of antenna technology. The phased array antenna test module includes a phased array antenna board, a heat dissipation plate and a fin heat sink. The front of the heat dissipation plate is installed on a side surface of the phased array antenna board, and a first thermal pad is also arranged between the front of the heat dissipation plate and the phased array antenna board. The first thermal pad is used to transfer the heat generated by the phased array antenna board to the heat dissipation plate. The fin heat sink is arranged on the back of the heat dissipation plate, and a plurality of heat dissipation fins are arranged on the fin heat sink. During actual testing, the heat generated on the phased array antenna board is transferred to the heat dissipation plate through the first thermal pad, and the heat dissipation plate then transfers the heat to the fin heat sink, and dissipates the heat through a plurality of heat dissipation fins. Since the heat dissipation fins are used for heat dissipation and the heat transfer efficiency is high, the heat dissipation difficulty of the test bare board is effectively solved.

The invention relates to the technical field of heat dissipation, and provides a micro-channel-based three-dimensional stacked chip liquid cooling heat dissipation method and system, and the method comprises the steps: obtaining the thermal imaging image information of each chip of the three-dimensional stacked chips in a preset time period; the thermal imaging image information comprises a plurality of thermal imaging images, and one chip corresponds to one piece of thermal imaging image information; for each liquid cooling micro-channel, determining target heat change information of a chip part corresponding to the liquid cooling micro-channel in the preset time period based on the thermal imaging image information corresponding to the liquid cooling micro-channel; and for each liquid cooling micro-channel, generating a target cooling liquid flow rate corresponding to the liquid cooling micro-channel based on the target heat change information corresponding to the liquid cooling micro-channel, and controlling a first micro pump corresponding to the liquid cooling micro-channel to pump cooling liquid into the liquid cooling micro-channel based on the target cooling liquid flow rate. According to the method, the problem of difficult heat dissipation caused by high power consumption of the three-dimensional stacked chip is solved.

The invention relates to the technical field of permanent magnet vernier motors, in particular to a shaft-diameter combined rotor high-power-factor permanent magnet vernier motor which comprises an axial stator, a shaft-diameter combined rotor and a radial outer rotor, the axial stator and the shaft-diameter combined rotor are coaxially arranged, and the radial outer rotor and the shaft-diameter combined rotor are concentrically arranged. And the radial outer rotor is positioned on the outer side of the shaft-diameter combined rotor. The axial stator comprises an armature iron core, a permanent magnet A and a stator winding, the armature iron core comprises an armature yoke and a plurality of armature teeth arranged on the armature yoke in a protruding mode, and the armature teeth are evenly arranged on the armature yoke along the circumference. The axial and radial combined rotor structure is adopted, so that the axial magnetic field is connected with the radial magnetic field, the armature winding is arranged on the axial disc type stator yoke, and the problem of difficult heat dissipation of the winding is solved; the stator magnetic field is modulated by using the magnetic conductance change caused by the salient poles of the rotor, so that low-speed and large-torque output of the motor can be realized, and the power factor of the permanent magnet vernier motor can be improved.

The present application relates to the field of optical communication technology, and in particular to a heat dissipation motherboard and an optical module. A heat dissipation motherboard is used to package a chip, comprising a circuit board and a heat sink, the heat sink is located on one side of the circuit board, and the chip is arranged on the other side of the circuit board. A heat dissipation through hole is provided at the position corresponding to the chip on the circuit board, and the heat dissipation through hole runs through both sides of the circuit board. At least part of the heat sink extends into the heat dissipation through hole and can contact the chip, so that the heat generated by the chip when working can be transferred out, reducing the heat transfer thermal resistance, thereby effectively dissipating the heat of the chip, and solving the problem of heat dissipation difficulties of COB bare chips. An optical module comprises the heat dissipation motherboard, chip and shell, the heat dissipation motherboard and chip are located in the shell, and the heat sink of the heat dissipation motherboard contacts the chip and the shell respectively, so as to quickly transfer the heat generated by the chip to the shell, thereby achieving the effect of efficient heat dissipation.

The utility model provides a sealing type frequency converter structure with heat radiation applied to the frequency converter field, comprising a frequency converter housing and a heat conduction substrate, one side of the heat conduction substrate is provided with a longitudinal plate, one side of the heat conduction substrate is also provided with an installation substrate, one side of the installation substrate is fixedly provided with heat radiation sleeve plates, and an installation cavity is arranged among the bottoms of the plurality of heat radiation sleeve plates. A guide groove is formed in the heat dissipation sleeve plate, and one end of the longitudinal plate extends to penetrate through the guide groove into the mounting cavity and is fixedly provided with a horizontal pressing plate; a buffering bag is clamped between the horizontal pressing plate and the mounting base plate, buffering pads are fixed to the upper side and the lower side of the buffering bag, and a plurality of buffering springs are fixed between the two sets of buffering pads at equal intervals. Through the combination of the longitudinal plates, the heat dissipation sleeve plates, the side heat dissipation plates and the heat dissipation fins, a multi-path heat dissipation structure is formed, the heat dissipation area is increased, the heat dissipation efficiency is remarkably improved in combination with the circular flow of the heat dissipation liquid in the buffer bag, and the problem of difficult heat dissipation of the sealed type frequency converter is solved.

The utility model relates to the technical field of commutators, in particular to a pear hook type commutator seat with a good wear-resistant effect, which comprises a base, copper sheets, a pear hook frame, a connecting seat and a fixing piece, the outer side of the base is provided with a plurality of groups of copper sheets, and one end of each copper sheet is provided with a hook corner. Compared with a traditional key groove connection mode, the novel structure is provided with the mounting groove, the bearing groove and the like, a certain space is formed between the base and the pear hook frame, channels for air circulation are increased, heat dissipation is facilitated, the problem that heat dissipation is difficult after a commutator is used for a long time is solved, and the commutator is simple in structure and convenient to use. The optimized connecting structure reduces direct friction at the joint of the base and the rotating shaft. And the pear hook frame is connected with the base through the connecting seat, so that disassembly, assembly and replacement are convenient, the fixing piece is stable, abrasion caused by friction is reduced, the service life of the commutator seat is prolonged, and the precision of equipment is ensured.

The utility model relates to the technical field of drying for bricks, and discloses a drying device for sintering perforated bricks, which comprises a dryer shell and an elastic plate device, the outer wall of the dryer shell is fixedly connected with an elastic plate connecting block, the outer wall of the elastic plate connecting block is provided with a protective plate, the inner wall of the elastic plate connecting block is fixedly connected with a limiting rod, and the limiting rod is fixedly connected with the protective plate. The outer wall of the limiting rod is sleeved with a reset spring, the outer wall of the protection plate is fixedly connected with a placement plate, and a plurality of sleeve holes are formed in the outer wall of the placement plate. According to the drying device for sintering the perforated bricks, by arranging the placement plate, when the device is reset, the device can throw out raw materials adhering to the outside of the mold core, the situation that the precision of a mold is reduced due to the fact that the raw materials adhere to the outside of the mold core is avoided, and the precision of the device is improved when the device works in the later period.

A kind of waste oil processing device, including oil tank, heat sink and stirring device, oil tank is vertical tank body, the top of oil tank is equipped with waste oil inlet, nitrogen inlet, antistatic agent inlet and torch pipe, the bottom of oil tank is equipped with waste oil outlet, nitrogen and antistatic agent are injected into oil tank by nitrogen inlet and antistatic agent inlet, one hand reduces the generation of static electricity, the other hand excludes air, prevents the appearance of fire source and oxide in oil tank, to prevent waste oil spontaneous combustion.The design not only can prevent the appearance of fire source and oxide in oil tank, to prevent waste oil spontaneous combustion, effectively improve the safety of waste oil processing device, but also can reduce the temperature of liquid in tank body by heat exchange, to prevent the temperature of tank body is too high and leads to waste oil spontaneous combustion.

The utility model discloses a permanent magnet motor with a novel cooling structure, which relates to the technical field of permanent magnet motors and comprises a shell, a plurality of air holes are formed in two ends of the shell, and a base is mounted at the lower end of the shell; an inner container is installed in the shell, and an annular cavity is formed in the inner container. According to the utility model, through cooperation of the fan, the cooling fins and the air holes, external cold air can be conveniently and rapidly introduced into the motor to realize circulating ventilation and heat dissipation, the internal temperature of the motor is effectively reduced, and the cooling effect is improved; through cooperation of the cooling fins and the inner container, heat generated by rotation of the rotor winding and the stator winding can be conveniently and rapidly transmitted to the outside of the shell, and the cooling effect is improved. Through cooperation of the water inlet pipe, the water outlet pipe and the annular cavity, heat absorbed by the inner container can be cooled conveniently, meanwhile, the heat is taken away through water circulation, a multi-dimensional heat dissipation system is formed, cooling efficiency is improved, and finally the problem that heat dissipation in the permanent magnet motor is difficult is solved.

A circuit supporting high-current charging detection, mounted on a circuit board, includes an input source for connecting to an external power supply; a charging detection circuit for detecting the charging current and outputting a charging detection signal to a battery and an MCU, comprising at least a diode module, a sampling resistor module, and an optocoupler; the diode module includes at least multiple first power diodes connected in parallel, with the anodes of all first power diodes connected to the input source and the cathodes connected to the positive terminal of the battery; the sampling resistor module has one end connected to the common terminal of the input source and the diode module, and the other end connected to the first pin of the optocoupler, including multiple sampling resistors connected in parallel; the second and third pins of the optocoupler are grounded, and the fourth pin is connected to the MCU; the battery is used to adjust the charging current according to the charging detection signal. This invention can accurately detect the high-current charging state and flexibly adjust the resistance and power of the sampling resistors to meet the detection requirements of different current ranges.