Wedge-shaped fractal based tree-from spontaneous orienting, transporting and collecting runner structure

Abstract

The invention belongs to the field of planar fluid runner design, and discloses a wedge-shaped fractal based tree-from spontaneous orienting, transporting and collecting runner structure. The wedge-shaped fractal based tree-from spontaneous orienting, transporting and collecting runner structure is provided with multi-stage wedge-shaped branches, wherein the lower-bottom equivalent length of a longitudinal section of a i-stage wedge-shaped branch is Di, a gradient angle of the longitudinal section of the i-stage wedge-shaped branch is phi 1, the integral height of the longitudinal section of the i-stage wedge-shaped branch is Li, and the upper-bottom length of the longitudinal section of the i-stage wedge-shaped branch is Di', the upper-bottom length is smaller than the lower-bottom equivalent length, and the gradient angle phi 1 is an included angle between two bevel edges connected with the upper bottom; the lower bottom of the j-stage wedge-shaped branch is adhered on the bevel edges of the (j-1)-stage wedge-shaped branch, and a relationship between the lower-bottom equivalent length of the j-stage wedge-shaped branch and the upper-bottom length of the (j-1)-stage wedge-shaped branch is as follows: Dj is smaller than or equal to D(j-1)', and an included angle between the j-stage wedge-shaped branch and the central line of the (5-1)-stage wedge-shaped branch is phi j. We edge-shaped basic unit has a gradient structure, so that fluid generates Laplace pressure difference on the rubber, the fluid is spontaneously driven to transport in an orientated mode on the runner, andthe fluid is transported and collected along a continuous fractal structure, so that orientated transporting and collecting efficiency of the fluid can be realized, and large-area manufacturing is realized.

Description

technical field [0001] The invention belongs to the field of planar fluid channel design, and more specifically relates to a spontaneous directional transport collection channel structure. Background technique [0002] In recent years, water scarcity in arid and semi-arid regions has become increasingly serious. However, some organisms such as beetles and cacti can adapt to harsh living environments, mainly because of their efficient fluid collection capabilities to meet daily water needs. Inspired by this, a series of biomimetic structures for water vapor collection have been designed and prepared, mainly including: a planar periodic structure imitating beetles; a three-dimensional tapered gradient structure imitating cactus; and a three-dimensional spindle structure imitating spider silk. The detailed description of the three is as follows: [0003] First, imitate the periodic planar structure of the beetle between hydrophilic and hydrophobic phases. The main structure i...

AI Technical Summary

Problems solved by technology

The main disadvantage is that there will be more residual droplets on the surface, which increases the thermal resistance of condensation, which is not conducive to continuous droplet condensation and fluid collection, and the hydrophilic region of the array increases the adhesion to water, making the droplets unable to fall quickly

Since the flow channel provided by the hydrophobic area cannot realize the directional movement of the droplets, the collection efficiency is relatively low;

[0004] Second, the three-dimensional gradient structure imitating cactus, the main structure is the cone as the basic unit of the array structure for fluid collection, the droplets on the surface of the cone can make The droplets on the tip of the cone spontaneously transfer to the bottom of the cone for water collection, but the droplets that move to the bottom of the cone cannot continue to move in a directional manner, so there is great difficulty in collecting droplets, and there will be large droplets remaining. In addition The processing technology of the cone is very complicated;

Compared with the two-dimensional planar flow channel, the main disadvantages are that it is difficult to process and prepare, and the structural strength is low

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