56results about How to "Achieve heat transfer performance" patented technology

The invention provides a rod-fin type loop heat pipe with varying sizes. The rod-fin type loop heat pipe includes an evaporation header, a condensation header, rising pipes and return pipes, flow stabilizing devices are arranged in the rising pipes, the flow stabilizing devices each include a core body and an outer shell, the core bodies are arranged in the outer shells, the outer shells are connected and fixed to the inner walls of the rising pipes, the core bodies each include a plurality of radial rods extending from the centers of the core bodies to the radial direction, and a plurality offins extending downwards from the radial rods are arranged on each radial rod; and the core bodies each include a core column arranged at the center of each core body, one ends of the radial rods arefixed into the core columns, and from the core columns of the rising pipes to the radial extension direction, the size of the fins on the same radial rods is getting larger and larger. According to the rod-fin type loop heat pipe with the varying sizes, the size of the fins on the rising pipe walls is increased, so that the ability to cut vapor phases and liquid phases near the pipe walls is enhanced. The ability to cut near the pipe walls is focused to be strengthened, and noise reduction and vibration damping can be targeted for specific situations, so that the effects of noise reduction and vibration damping are further achieved, and meanwhile, heat transfer can be further enhanced.

The invention relates to a center spring and helical blade rotor in a heat exchange tube. The rotor mainly comprises a hollow shaft, hollowed-out blades and helical springs. The hollowed-out blades are positioned on the surface of the hollow shaft, the outer diameter of each hollowed-out blade is smaller than the inner diameter of the heat exchange tube, the hollowed-out blades are smooth in surface and helically shaped around the hollow shaft, and a hollowed-out structure is arranged on the surface of each hollowed-out blade so as to reduce contact area of fluid and the rotor blades and reduce pressure loss when the fluid flows through the rotor. In order to reduce flow resistance of the fluid in the tube and further enhance strengthened heat transfer and self-cleaning performance of the hollowed-out portions, the helical springs are arranged in hollowed-out structures at the centers of the blades. The helical springs are arranged in the hollowed-out structures at the centers of the blades, so that tangential and radial movements of fluid regions in the hollowed-out structures are enabled to be strengthened in the process that the helical springs rotates with the rotor, a turbulence effect in the hollowed-out regions is further improved, and functions of scale prevention, descaling and strengthened heat transfer are further realized.