42results about How to "Play a heat dissipation function" patented technology

The invention relates to a movable silent generator room. The movable silent generator room comprises a movable room body, wherein the movable room body comprises a base, side walls and a roof; the side walls comprise a shutter and corrugated board wall bodies; sound absorbing and insulating boards are arranged on the inner sides of the corrugated board wall bodies and the inner side of the roof; a generator is placed in the movable room body; a silent grille is arranged between the generator and the shutter in the movable room body. The sound absorbing and insulating boards disclosed by the invention are formed by splicing modular sound absorbing and insulating modules, so that the sound absorbing and insulating boards are firm in structure, allow sound waves to easily pass through and facilitate noise absorption by sound absorbing and insulating materials; in addition, the sound-absorbing and insulating materials are formed by laminating glass wool and cement-fiber boards with different sound absorbing and insulating coefficients layer by layer, thereby fully absorbing noises with different wavelengths and being better in noise removing efficiency; the outsides of the sound absorbing and insulating materials are wrapped with glass fiber cloth or non-woven fabric, so air between every two layers of sound absorbing and insulating materials can be effectively extruded, and the condition that the noises are leaked without absorption is prevented.

The built-in nano-channel cooling quantum cascade semiconductor laser and its preparation method belong to the technical field of new quantum cascade lasers, and the laser includes: diversion holes, built-in nano-channels, terahertz quantum cascade laser core layers and substrates; The core layer of the terahertz quantum cascade laser includes the optical waveguide and the non-luminous chip area; the core layer of the terahertz quantum cascade laser is fabricated on the substrate; the guide hole is made on the non-luminous chip area, and its depth runs through the terahertz quantum cascade Multiple built-in nano-channels in the laser are smaller than the sum of the core layer and substrate thickness of the terahertz quantum cascade laser. The invention directly cools the chip, has high cooling efficiency, and avoids heat dissipation difficulties caused by the thermal resistance of the substrate. The built-in nanochannel can be fabricated on the substrate or inside the core layer of the semiconductor laser. By selecting a suitable working substance, the operation of THz quantum cascade lasers at different temperatures can be realized.

The invention discloses a slow-wave structure used for high-power output of a traveling wave tube, which belongs to the field of microwave electric vacuum. The slow-wave structure includes a cylindrical metal shell, several metal rings with concentric openings arranged in the shell, and a metal support structure for fixing the metal rings. The support structure of the slow wave structure is made of metal material, which can play a heat dissipation function to a certain extent. In the working frequency range, the coupling impedance curve of this slow-wave structure is much larger than that of the helical slow-wave structure, and it can interact and exchange energy better and effectively. And to a certain extent, it solves the problem that the coupling impedance of the general slow wave structure is too small. The slow wave structure of the present invention is easy to process, and well improves the problem of high power output of the traveling wave tube with wide bandwidth, which expands the application range of the traveling wave tube.