7 results about "Fin height" patented technology

The invention relates to the technical field of copper part manufacturing, and discloses an external-fin internal-thread double-effect copper pipe for a heat pump system and a manufacturing method thereof.The manufacturing method comprises the steps that a preset copper raw material is melted and then subjected to horizontal continuous casting, a hollow copper pipe blank is subjected to planetary rolling, the outer side of an internal-thread copper pipe is coaxially sleeved with a preset aluminum pipe, and a composite pipe is subjected to expansion treatment; forming a plurality of groups of spiral fins on the copper-aluminum composite tube blank in an inclined angle distribution manner to obtain the double-effect copper tube with the outer fins and the inner threads; the spiral fin structure distributed in an inclined angle mode is machined on the outer surface of the copper-aluminum composite pipe blank, vacuum annealing and inert gas cooling treatment are assisted, the formed outer fin has good shape consistency and mechanical stability, the stress concentration risk of the root of the fin is remarkably reduced, and the service life of the outer fin is prolonged. According to the whole structure, the problem of stress cracking in the fin forming process of copper material integral forming is avoided, further improvement of the height and density of the fins is guaranteed, and therefore the effective heat exchange area of the air side of a heat pump system is expanded.

This invention provides a cost-effective and efficient spiral condenser, comprising a condensing assembly including a condensing tube, heat dissipation fins, a liquid inlet pipe, a liquid outlet pipe, and a baffle sponge. The condensing tube is a serpentine pipe, and heat dissipation fins are uniformly fixedly connected to its outer wall. This invention's innovative design of the condensing system's airflow enhances heat dissipation efficiency. In the production of small condensers, the height of the heat exchange fins can be determined based on the outer diameter of the heat exchange tube, ensuring good condensation performance while reducing the fin height, saving materials and installation space. Furthermore, the condensing assembly can be fixed to the cooling system using a mounting component, which is easy to assemble, simple in structure, and low in cost. By arranging the heat exchange fins in a spiral shape, wind resistance and noise are reduced during external airflow, minimizing the environmental impact of the condenser's operation.

A liquid-cooling heat dissipation plate having an uneven fin density and an unequal fin height includes a heat dissipation plate body having first and second heat dissipation surfaces opposite to each other, and multiple full-height fins and non-full-height fins formed on the second heat dissipation surface. The heat dissipation plate body is divided into a first to an N-th heat dissipation region along a cooling-liquid flowing direction. Multiple chips correspond in position respectively to the first to the N-th heat dissipation region. Each heat dissipation region is divided into a front region, a heat source region, and a rear region according to the cooling-liquid flowing direction. In each heat dissipation region, a fin density of the heat source region is greater than or equal to that of the rear region, and the fin density of the heat source region is greater than that of the front region.

The inner spiral finned tube of the present invention includes a tube body, a plurality of grooves arranged in the inner peripheral direction of the aforementioned tube body, and a plurality of fins, characterized in that the aforementioned plurality of grooves and the aforementioned plurality of fins are formed in a spiral shape in the longitudinal direction of the aforementioned tube body, the outer diameter of the aforementioned tube body is 3 mm or more and 10 mm or less, the number of the aforementioned fins formed on the inner peripheral surface of the aforementioned tube body is 30 to 60, the aforementioned inner spiral finned tube is made of metal, the cross-sectional shape of each of the aforementioned fins in the cross section of the aforementioned tube body is a rectangle with an apex angle of 0 ± 10º, the ratio h / f is 0.90 or more and 3.40 or less, h is the fin height, f is the fin width, the ratio c / f is 0.50 or more and 3.80 or less, c is the fin pitch between adjacent fins in the aforementioned inner peripheral direction of the aforementioned tube body, and the average value obtained by summing the aforementioned ratio h / f and the aforementioned ratio c / f and dividing the sum by two is 0.8 or more and 3.3 or less.

The present disclosure relates to techniques of active cooling of an electronic device. Particularly, it is provided a cooling device comprising a base plate comprising a first main surface extending in a longitudinal direction and comprising a plurality of fins extending from the first main surface in a fin height direction. Each fin has a cross section perpendicular to the fin height direction with a contour defined by two halves of the contour that are symmetric to each other with respect to a symmetry axis perpendicular to the fin height direction, wherein the first half of the two halves of the contour consists of a first round arc region between and extending into a first and a second extension region and the second half of the two halves of the contour consists of a second round arc region between and extending into a third and a fourth extension region.

A serrated panel for a trailing edge of a wind turbine rotor blade, the serrated panel comprising a plurality of teeth, each tooth having a tip, a base, two edges continuing from the tip to the base, a longitudinal axis, a pressure side surface and a suction side surface, and a plurality of vanes arranged side by side with gaps between adjacent vanes, each fin starts at one of said edges and extends in a rearward direction, where each fin has a fin length, a fin width and a fin height, characterized in that the pressure side surface and / or the suction side surface of the tooth comprises a wave-shaped element starting at or near one of the edges and extending in a forward direction, wherein each waveform element has a peak aligned with one of the fins and a waveform element width greater than the fin width.

The invention discloses a chip based on a novel heat dissipation structure and a manufacturing method. The chip comprises a chip body, a 3D heat dissipation channel layer integrated on the surface of the chip body and a micro-nano structure heat dissipation fin layer covering the outer surface of the 3D heat dissipation channel layer. The 3D heat dissipation channel layer is made of a graphene-carbon nanotube composite heat conduction material, honeycomb-shaped heat dissipation channels which are communicated with one another are formed in the 3D heat dissipation channel layer, the aperture of each honeycomb-shaped heat dissipation channel is 5-20 microns, and the thickness of the channel wall is 1-3 microns; the fin height of the micro-nano structure heat dissipation fin layer is 10-50 microns, the fin distance is 5-15 microns, and the surfaces of the fins are provided with nanoscale concave-convex texture.The manufacturing method is simple, heat can be rapidly and effectively transmitted to the external environment from the interior of the chip, the temperature of the chip in the working process can be reduced, the heat dissipation efficiency of the chip is improved, and the service life of the chip is prolonged. And the problem of performance reduction caused by over-high temperature can be reduced, and the chip can be ensured to efficiently operate in a stable temperature range.