Wall unit with variable reflectivity, wall assembly and intelligent building exterior wall system

Abstract

The invention provides a wall body unit with variable reflectivity, a wall body assembly containing it, and an intelligent building exterior wall system composed of the wall body assembly. Wherein, the variable reflectivity wall unit includes: a transflective layer, the transflective layer is used as the outer layer of the wall unit, and partially reflects and partially transmits the ambient light irradiated thereon; the reflective layer, the reflective layer and the transflective layer Relatively arranged, the reflective layer includes an electrochromic reflective layer, a liquid crystal electrode layer, and a base substrate sequentially arranged from the outside to the inside; the transflective layer and the reflective layer are connected by an airtight device to form a first airtight gap of a specified width; The first airtight gap is provided with a liquid crystal layer; the electrochromic reflective layer has a variable reflectivity under the action of an external control voltage; the liquid crystal layer has a variable refractive index under the control of the liquid crystal electrode layer. By using the invention, the exterior walls of buildings can maintain their appearance, reduce light pollution caused by reflections, and prevent visual damage and safety hazards caused by glare.

Description

technical field [0001] The invention relates to building exterior walls and optical devices, in particular to a wall unit with variable reflectivity, a wall assembly and an intelligent building exterior wall system. Background technique [0002] At present, the exterior facades of many high-rise buildings are decorated with glass materials, and for the sake of aesthetics, many glass exterior walls are constructed of high-reflectivity mirror materials. As a result, under the scorching sun, the strong light reflected by the shiny glass wall will have a serious impact on pedestrians and car drivers outside the building. The dazzling reflection will not only damage the visual organs, but also bring inconvenience to travel Affect driving safety. For high-rise skyscrapers, dazzling reflections can even affect the flight safety of aircraft. Bailiang pollution has become a new unnatural hazard in the city. [0003] In recent years, electrochromic glass has begun to be used in sma...

AI Technical Summary

Problems solved by technology

However, for the environment outside the wall, the increased reflection of the building will worsen the already strong glare reflection in summer, resulting in serious light pollution

At the same time, the light absorption increased by the electrochromic glass will also be converted into heat energy, which will eventually be transmitted to the building body. This part of the heat will eventually become a burden on the air conditioning system

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