1837results about How to "Even heat dissipation" patented technology

The invention discloses a heat-dissipating double-sided adhesive tape with an ultrahigh heat conductivity coefficient. Ethylene glycol or triethylamine is added into a polyamic acid solution, the resulting mixture is put in an oven in a vacuum environment and maintained at 100 DEG C for 0.9-1.1 hours, the temperature is raised to 300 DEG C and maintained for 0.9-1.1 hours, followed by natural cooling, to produce a polyimide film; the polyimide film is heated up to 250 DEG C from room temperature and then heated up to 500 DEG C, and further heated up to 1200 DEG C at a rate of 9-11 DEG C/min, to produce a prefired carbonized film; the prefired carbonized film obtained in the step 4 is rolled by a calendar; the rolled product is heated up to 2400 DEG C at a rate of 19-21 DEG C/min and maintained for 0.9-1.1 hours and then heated up to 2900 DEG C at a rate of 19-21 DEG C/min and maintained for 1.8-2.2 hours, followed by cooling, to produce a fired graphite film; and subsequently the graphite film is rolled to obtain a graphite coating. The heat transfer performance of the double-sided adhesive tape in both the vertical and the horizontal directions are improved, so as to prevent local overheat of the adhesive tape and ensure uniformity of heat transfer performance of the adhesive tape.

A temperature-homogenizing device for uniformly dissipating heat generated from electronic components in an electronic device to a housing of the electronic device includes a first and a second higher thermally conductive layers and a first lower thermally conductive layer. The first lower thermally conductive layer is disposed between the first and the second higher thermally conductive layers, and made of a material or a medium having a lower thermal conductivity than each of the first and the second higher thermally conductive layers. By means of this temperature-homogenizing device, the heat is homogeneously distributed throughout the first and the second higher thermally conductive layers at a higher thermal conduction rate and transferred through the first lower thermally conductive layer at a lower thermal conduction rate so as to maintain homogeneous temperature distribution on the housing.

The invention discloses a data center, comprising a cabinet and at least one server system, wherein the cabinet is provided with an elevated floor, and the at least one server system is arranged in the cabinet; the server system comprises multiple severs at different heights; and the elevated floor has a ventilating grate hole. The cooling system used for the data center comprises an air conditioner, multiple temperature sensors respectively arranged nearby the exhaust ends of the servers, a group of guide fans arranged nearby the ventilating grate hole of the elevated floor, and a control module electrically connected with the air conditioner, the temperature sensor and the guide fans, wherein the cool air from the air conditioner is injected below the elevated floor; the guide fans can drive the cool air to pass through the ventilating grate hole to flow upwards at an acceleration mode; and the control module adjusts the rotation speed of the guide fan based on the temperature value acquired by the temperature sensor, so as to enable the cool air to be uniformly distributed, and servers at different heights to uniformly cool. Compared with the prior art, the data center provided by the invention can improve the cooling efficiency, so as to save energy.

The invention relates to a prism-array jet micro-channel radiator. The radiator comprises a prism-array structure, a jet structure, an outlet-inlet cross structure, a liquid separating structure and an outlet-inlet arrangement structure. In the invention, cooling liquid enters the radiator via an inlet and then is led to side clearance through the liquid separating structure so as not to be mixedwith cooling liquid at an outlet; the distance between the outlet and the inlet is shortened by means of the comb-shaped outlet-inlet cross structure so as to reduce pressure drop; after reaching themultihole jet flow structure, the cooling liquid can be uniformly introduced onto a heated silicon substrate so that the temperature of the substrate is more uniform, heat is more easily taken away by the generated turbulent flow and meanwhile the pressure drop is also reduced by the jet structure; and finally the cooling liquid easily forms turbulent flow by means of the prism-array structure sothat the heat transferred to the prism structure from the substrate is more easily taken away, thus increasing the heat exchange efficiency. The prism-array radiator can be used in a cooler for microstructures such as an electronic chip, an LED and the like.

The invention relates to a life-cycle water-free cooling solution which is characterized by comprising the following components in percent by weight: 10-50 percent of propylene glycol, 50-80 percent of ethylene glycol, 0.1-10 percent of triazole compounds, 0.5-3.0 percent of sebacic acid, 0.2-1.0 percent of adipic acid, 0.5-1.5 percent of sodium benzoate, 0.3-5 percent of inorganic base, 0.01-0.1 percent of antifoaming agent and 0.01-0.1 percent of colouring agent. The cooling solution has a freezing point of below -50 DEG C and a boiling point of 166-191 DEG C; and because the cooling solution does not contain water, problems of boiling, gas etching, evaporating, scaling, rusting and the like caused by water existing in the cooling solution are thoroughly eliminated, a steam air resistance layer seriously influencing heat radiation is avoided from generating, power of an engine can be effectively improved and fuel is saved. Because the cooling solution does not contain water and has a reasonable corrosion inhibition system, the problem of corrosion is thoroughly solved; and the cooling solution has a service life of reaching up to 8 hundred thousand kilometers, is added once without replacement, is a life-cycle cooling solution, is especially suitable for military vehicles, high-end vehicles and high-power heavy-loading trucks and passenger cars, and can ensure that the vehicles safely run under extremely hot weather, severe cold weather, and severe environments such as desert, plateau, snowfield and the like.

The invention discloses an efficient cooling air conditioner system of a rack-mounted server cabinet. The system comprises a refrigerating module and a cabinet body provided with an air inlet. The refrigerating module conveys cold air to the cabinet body through the air inlet, a partition board is arranged in the cabinet body, one side of the partition board is an air flue, the other side of the partition board is provided with a containing space used for containing a server, the cross section of the air flue is gradually reduced in the flow direction of the air, the partition board is provided with a plurality of air inlets in the flow direction of the air, and the air inlets are provided with arc-shaped flow guide plates. By means of the partition board, the cross section of the air flue is gradually reduced in the flow direction of the air, so that the cold air entering air gaps is equal in speed and amount, and uniform heat dissipation is achieved. Due to the facts that a sound-insulating material layer is arranged on a shell, arc-shaped transition plates are arranged on the corners of the cabinet body and the arc-shaped flow guide plates are arranged on the air inlets, noise is lowered, and the system is low in noise during work.

A light module comprises a light unit, a heat transferring plate or a plurality of heat transferring pipes, and a plurality of heat dissipating fins. The heat transferring plate or heat transferring pipes are positioned on the bottom surface of the light unit to transfer heat generated by the light unit. When the heat transferring plate is used, the heat dissipating fins are arranged under the heat transferring plate and perpendicular to the bottom surface of the heat transferring plate. The heat dissipating fins have a recess for the accommodation of the heat transferring plate and the light unit. When the heat transferring pipes are used, the heat dissipating fins each contact the heat transferring pipes. Uniform heat dissipation is thus attained.

The invention provides an axial permanent magnet assisted radial reluctance high-speed motor with a hybrid cooling structure, and relates to the technical field of motors. The motor provided by the invention is provided with an air cooling and water cooling structure on the basis of a dual group 6/4-pole switched reluctance motor structure. The motor comprises a casing, a front end cover, a rear end cover, a rotor and a stator, and is characterized in that an inter-tooth slot of the stator and the rotor form a cooling air channel, each end cover is provided with air discharging holes, the casing is provided with a cooling air inlet, a cooling water inlet pipe opening, a cooling water outlet pipe opening and a circumferential ring-shaped air guiding channel, the back of a ring yoke of the stator is provided with a spiral water channel pipe, and two ends of the rotor are provided with self-cooling fans respectively. According to the invention, a cooling structure combining the air cooling stator and the water cooling stator is adopted, and a water cooling function and an air cooling function are opposite in direction and complementary in cooling region, so that the stator and the rotor of the motor are effectively enabled to be reduced in temperature, a problem of difficult heat dissipation of the motor under a high-speed operating condition is avoided, thus long-term safe and stable running of the motor is ensured, and the service life of the motor is effectively prolonged.

Water-cooling arrangement includes stator cage and cooling water channel. Cooling water channel in stator cage is arranged in axial direction inside stator cage in not helical round about manner. The cooling water channel can be as single circuitous water channel, or a combination formed from multiple circuitous water channels. Each pair of water channel possesses a cooling water outlet and a cooling water inlet. The cooling water outlet and a cooling water inlet can be arranged at axial same side of stator cage, or arranged at different sides. Water outlets and water inlets of multiple water channels can be arranged in same direction or in reversal directions. Circuitous water channels are in reversal directions can reduce temperature gradient at different parts of the stator cage further.

A cooling method for an LED lamp is disclosed. An LED lamp is provided. The LED lamp includes a housing and at least one LED light source module. The housing has a cover body, a base and a plurality of air outlets. The base forms at least one segment difference portion. The slanted surface of the segment difference portion has a plurality of air inlets. The LED light source module is adjacent to the air inlets. The LED light source module has a cooling device and the cover body has a plurality of air outlets. Airflow is guided into the cooling space along the air inlet on the slanted surface of the segment difference portion. When the LED lamp generates heat, air entered into the cooling space is blown to the cooling device. The airflow with heat is exhausted from the air outlet of the cover body.

A digital micromirror device (DMD) module includes a circuit board, a DMD element, a soft elastic pad, a heat dissipation pad and a heat sink. The circuit board includes a first surface, a second surface and a through hole, wherein the first surface is opposite to the second surface. The DMD element is electrically connected to the circuit board. The soft elastic pad is disposed on the first surface of the circuit board and surrounds the through hole. The heat dissipation pad passes through the through hole and contacts the DMD element. The soft elastic pad is sandwiched between the circuit board and the heat sink, the heat dissipation pad is sandwiched between the heat sink and the DMD element, and the heat sink contacts the soft elastic pad and the heat dissipation pad, so as to apply a force to the soft elastic pad and the heat dissipation pad.

A handheld communication device with a heat dissipating structure includes a housing, a heat generating unit and a heat dissipator. The housing includes a chamber formed therein; the heat generating unit is received inside the chamber; the heat dissipator is arranged corresponding to the heat generating unit. The heat dissipator includes a heat pipe and a heat conductive plate. The heat pipe includes one end thermally attached to the heat generating unit and another end arranged away from the heat generating unit, and the heat conductive plate is thermally attached to the heat pipe. With such structure, the heat generated by the heat generating unit can be uniformly conducted to the heat conductive plate in order to prevent the accumulation of heat at the surrounding of the heat generating unit and to improve the efficiency of the heat dissipation of the device.

The invention discloses a power battery thermal management system, which mainly comprises power batteries, heat conducting devices, a liquid cooling plate, a control system and a heat dissipating device, wherein at least one group of heat conducting devices are arranged between the power batteries; each heat conducting device comprises a heat conducting graphite plate, a heat pipe embedded in the liquid cooling plate and fins; a heat conducting device mounting hole is disposed on the liquid cooling plate; a coolant flow channel is disposed in the liquid cooling plate; the rest part of the liquid cooling plate is filled with a phase change material; the liquid cooling plate is in communication with the heat dissipating device to form a heat dissipating circuit; the control system is configured to drive the coolant and control the circuit in which the coolant is located. The power battery thermal management system has high heat storage and heat dissipation efficiency, saves energy, improves the energy density of the battery pack, ensures that the power batteries are in a suitable temperature range in operation, and achieves the temperature consistency of the power batteries.

A substantially anhydrous, thickened, spreadable, warming lubricant composition comprising a mixture of glycerin, polyhydric alcohol, a non-ionic surfactant, and a Carbomer thickener, the surfactant improving wetting and spreadability of the composition on skin and latex, and the thickener providing a creamy rich feel to the composition, such that the composition can be applied to skin or a condom and provide an optimal warming effect upon contact with ambient moisture during use and such that the composition can be added to a condom package and, over the course of a week, spread and coat nearly the entire internal and external surfaces of the condom.

The present invention relates to one kind of round Cr-Mo alloy steel billet produced in a bow-type continuous casting machine and its production process. The molten steel for the round Cr-Mo alloy steel billet contains P not more than 0.012 wt% and S not more than 0.002 wt%, and has Mn/S weight ratio not smaller than 200. The present invention features that the continuous casting process has the second cooling with specific cooling water amount of 0.47-0.53, the first region cooling water amount accounting for 35-45 %, the second region cooling water amount accounting for 22-32 %, the third region cooling water amount accounting for 14-24 %, the fourth region cooling water amount accounting for 9-19 %, and Mn/S content ratio in steel not smaller than 200. The present invention can produce continuously cast round low carbon alloy steel billet without crack, shrinkage hole and other defects.

An object of the present invention is to provide a cooler for cooling both sides (top and bottom surfaces) of a semiconductor device, wherein the variation of pressing force on flat cooling tubes holding a semiconductor device is reduced, thereby uniformly dissipating the heat generated by the semiconductor device. When the holding plates press the flat cooling tubes and semiconductor modules by tightening the nut, the dimensional tolerances in the stacking direction are absorbed by the deformable portions in the inlet and outlet headers. A spacer may be employed inside the flat cooling tubes in order to suppress the deformation of the flat cooling tubes along the stacking direction.

The invention discloses a heat exchanger with a corrugated pipe coil structure provided with an internal duct and an external duct, which comprises an inlet, an outlet, a corrugated pipe, a dome, an internal ring bushing, an external ring bushing, a fan and a bracket. When fluid media to be in heat exchange flow in the corrugated pipe in the heat exchanger from the inlet, form a turbulent flow in a pipe wall with a corrugated structure and carry out heat exchange with air in the internal duct and the external duct outside the corrugated pipe via the wall of the corrugated pipe, the fan discharges air in the internal duct and the external duct, and the fluid media are discharged from the outlet after the heat exchange performed in the corrugated pipe in a spiral way. The heat exchanger has the advantages of high heat exchanger effectiveness, simple structural technology, light weight, integration, and the like, and the fluid media in the pipe coil after the heat exchange have even temperature, thereby the heat exchanger can be used for heat exchange of air, liquid and air-liquid mixing substances. When the corrugated pipe adopts resistant materials, the heat exchanger can be used for heat exchange for corrosive liquid media.