382results about How to "Uniform heat conduction" patented technology

The invention offers heat interface material. It includes many carbon nanometer tubes, polymeric material which is set between the carbon nanometer tubes, at least one heat flow collectors which are connected to the carbon nanometer tube. The heat flow collector can reduce thermal contact resistance and be good for the heat conduction of the carbon nanometer tube. And the invention also offers the manufacturing method of the heat interface material.

The invention comprises high molecular material and multi carbon nanotubes distributed in the high molecular materials. The thermal interface material forms first surface and second surface. The carbon nanotubes have opening at its both ends and is evenly distributed in the high molecular material, and extends into two surfaces along the first and second surface of thermal interface material. The invention also offers manufacturing method for the thermal interface material. It includes following steps: provides a carbon nanotube array that is soaked in fusion high molecule; solidifies the high molecule to generate high molecule composite material with carbon nanotube distribution; cuts the high molecule composite material to form the thermal interface material.

A gradient coil system for a magnetic resonance tomography apparatus has a layer structure including a gradient coil layer and a cooling layer. The cooling layer is fashioned as a plate heat exchanger, composed of plates, for cooling the gradient coil layer. In this way, a highly efficient cooling of the gradient coil layer is achieved with a lower structural height compared to conventional tubular configurations.

The invention discloses a thermo-sensitive ceramic heater. The thermo-sensitive ceramic heater comprises a heating part, a connecting wire harness and a mounting bracket, wherein the heating part consists of a heating element and a radiator; the heating element comprises a heat conduction tube and a heating core; the heating core comprises a heating sheet, an electrode sheet and insulating paper; the connection wire harness comprises a connecting sheet; at least two semi-circular grooves are formed in the outer side surface of the heat conduction tube; the width of the heat conduction face of the heat conduction tube is 0-15 mm larger than that of the radiator. Through the design that the connecting sheet is added to the electrode sheet, the effects of reliable contact between the heater and a connecting point of the connection wire harness, stable connection and convenient manufacture are achieved. The structure that the width of the heat conduction tube is not equal to that of the radiator is adopted, so that combination between the radiator and the heat conduction tube is more stable, and heat dissipation is more uniform. Meanwhile, as the semi-circular grooves are formed in the side surface of the heat conduction tube, damage of the inner wall of the heat conduction tube to the insulating paper of the heating core is less, the heating core in the heat conduction tube is combined more tightly, and the security and the heat efficiency are greatly improved.