79results about How to "Efficient cooling and heat dissipation" patented technology

The invention relates to a loop heat pipe heat radiator with a vapor-liquid two-phase flow jetting and pressure boosting device. The loop heat pipe heat radiator with the vapor-liquid two-phase flow jetting and pressure boosting device comprises an evaporator, the vapor-liquid two-phase flow jetting and pressure boosting device, a boiling pool and a condenser, wherein the vapor-liquid two-phase flow jetting and pressure boosting device adopts a structure of feeding vapor from the center and feeding water from the circumference; an outlet of the evaporator is connected with the vapor-liquid two-phase flow jetting and pressure boosting device; the vapor-liquid two-phase flow jetting and pressure boosting device is connected with an inlet of the boiling pool; an outlet of the boiling pool isconnected with a condensate inlet of the tube-in-tube condenser; and an outlet of the condenser is connected with the evaporator. According to the loop heat pipe heat radiator with the vapor-liquid two-phase flow jetting and pressure boosting device provided by the invention, through additionally arranging the vapor-liquid two-phase flow jetting and pressure boosting device, part of subcooled liquid working medium can be directly introduced into the boiling pool without the need for passing through the evaporator, so that the problem of insufficiency in liquid supply of the boiling pool is solved; and meanwhile, through increasing the running power of the system, high-efficiency cooling and heat radiating of an electronic component and long-distance transmitting of heat are realized.

The invention provides a single-piston linear power generation engine, belonging to the technical field of internal combustion engines. The engine comprises a cylinder A, a cylinder B, a compression spring, a contact block, secondary permanent magnets, supports, a spindle, a piston, piston rings, primary cores, windings, heat insulation gaskets, sliding bearings, a cylinder jacket and a spark plug, wherein cooling fins cover the cylinder A and the cylinder B; the compression spring is fixed at the bottom of the cylinder B and is fixedly connected with the contact block; the contact block is fixedly connected with the secondary permanent magnets; the supports are fixedly connected with the spindle which is fixedly connected with the piston; the piston rings are sleeved outside the piston; the bottom of the cylinder B is fixedly connected with the primary cores; the cylinder B is fixedly connected with the cylinder A; and the spark plug is arranged on the upper part of the cylinder A. The engine avoids the inertia force of the traditional structure, has good balance, removes torsional vibration of the crankshaft, weakens the vibration and the noise of the whole machine, dissipates heat effectively and has compact structure, simple working, high volume power density, low mechanical loss and high energy conversion efficiency.