Infrared Reflection Device with Adjustable Proportion
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Solution Overview
Problem
Current infrared reflection sheets lack adjustable reflection proportions, leading to inefficient temperature regulation in buildings, as they either transmit or reflect infrared rays without control, increasing the workload of temperature adjustment devices and hindering energy conservation.
Innovation Solution
An infrared reflection device comprising two light-transmitting conductive substrates with electrode layers and a liquid crystal mixture, including a negative liquid crystal and chiral dopant, allows for adjustable reflection by controlling the electric field across different electrode areas using switches, enabling variable infrared reflection based on temperature needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional inorganic film coating material is used for infrared reflection, then the reflection ratio of infrared rays is high, but the reflection proportion cannot be adjusted, causing increased workload of temperature regulation equipment when temperature is low
Solution Approach 1:
The patent applies liquid crystal materials that can dynamically change their optical properties in response to temperature changes or electrical signals. The liquid crystal layer transitions between different phases or orientations, enabling the infrared reflection proportion to be adjusted from fixed to variable, thus adapting to different temperature conditions and reducing energy consumption of temperature regulation equipment.
Solution Approach 2:
The patent changes the physical state or optical parameters of the infrared reflection layer by using liquid crystal materials whose molecular arrangement can be altered through temperature changes or electrical field application. This parameter change enables the reflection proportion to be tuned, allowing the system to adapt between high reflection when hot and low reflection when cold, resolving the contradiction between energy efficiency and adaptability.
2Productivity
If infrared reflection sheet with fixed reflection proportion is used, then the structure is simple, but the temperature regulation efficiency is low due to inability to adjust reflection based on temperature needs
Solution Approach 1:
The patent uses a composite structure combining liquid crystal materials with infrared reflection particles or layers. This composite material integrates the temperature-responsive properties of liquid crystals with the infrared reflection capabilities of specialized particles, enabling adjustable temperature regulation efficiency while maintaining a relatively compact and integrated device structure.
Solution Approach 2:
By utilizing the phase transition or orientational change properties of liquid crystal materials, the patent enables the infrared reflection proportion to be adjusted through parameter changes such as temperature or electrical field strength. This allows the device to achieve high temperature regulation efficiency by adapting to different thermal conditions without requiring completely different structural configurations.
3Reliability
If infrared reflection is always active, then infrared rays are reflected effectively, but the workload of temperature regulation equipment increases when temperature is already low
Solution Approach 1:
The patent implements a feedback mechanism where the infrared reflection proportion is adjusted based on the actual temperature conditions. When the temperature is low, the liquid crystal material transitions to a state with lower infrared reflection, allowing heat to be retained or passed through as needed. This feedback-based adjustment ensures that infrared reflection is effective only when necessary, reducing the energy consumption of temperature regulation equipment while maintaining reliability.
Solution Approach 2:
The dynamic nature of liquid crystal materials allows the infrared reflection property to change in response to temperature variations. The material can transition between reflective and transmissive states, ensuring that infrared reflection effectiveness is maintained when needed while avoiding unnecessary reflection that would increase the workload of temperature regulation equipment during already cool conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves adjustable infrared reflection, optimizing internal building temperatures and reducing reliance on air conditioning, thus promoting energy conservation and ecological protection.
Implementation Method 1
Through adjusting a voltage, the infrared reflection sheet can transmit infrared rays at a low temperature and can reflect some of infrared rays from sunlight at a high temperature
Implementation Method 2
the liquid crystal monomer and/or the chiral dopant is provided with an ester group capable of capturing cations
Data Source
AI summary
An infrared reflection device includes a power supply assembly, a plurality of switches, and two relatively disposed light-transmitting conductive substrates packaging a regulating area. Each of the light-transmitting conductive substrates comprise a light-transmitting substrate and an electrode layer. The regulating area is filled with a liquid crystal mixture; the electrode layers are arranged on opposite surfaces of the two light-transmitting substrates; the electrode layer of at least one of the light-transmitting conductive substrates comprises at least two mutually independent electrode areas; and electrode areas of the same light-transmitting conductive substrate, after being respectively connected in series to the switches, are jointly connected in parallel to the same electrode of the power supply assembly.