Elevator Component Cooling Using Thermoelectric Convective Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air-cooling methods for elevator systems, such as the use of fans, are inefficient and noisy, and fail to effectively maintain components within a desired temperature range due to varying ambient conditions.
Innovation Solution
A temperature control system utilizing natural convective airflow and a thermoelectric device to provide heating or cooling for elevator components, employing a warm air duct and a cool air duct with a thermoelectric module positioned between them to create a temperature differential that enhances airflow and reduces noise through the Venturi effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional air-cooling fans are used to cool elevator components, then cooling effectiveness is improved, but noise levels increase and additional noise suppression is required
Solution Approach 1:
The patent replaces the mechanical fan-based cooling system with a thermoelectric cooling system that uses electrical energy to create temperature differentials. This substitution eliminates the mechanical moving parts that generate noise, thereby reducing noise levels while maintaining cooling effectiveness for elevator components.
Solution Approach 2:
The system uses natural convective airflow to provide cooling without requiring external power-driven fans. The thermoelectric device creates the temperature differential that drives the convective flow, allowing the system to self-regulate and cool components passively, eliminating noise from forced air movement.
2Temperature
If passive cooling with fans is used for elevator components, then cooling is provided, but effectiveness is limited and additional noise suppression is required
Solution Approach 1:
The patent replaces passive fan-based cooling with an active thermoelectric cooling system that provides controlled and reliable cooling. The thermoelectric device actively manages heat transfer, ensuring consistent cooling effectiveness across varying ambient conditions without relying on passive convection alone.
Solution Approach 2:
The system changes the operating parameters by using thermoelectric devices to create controlled temperature differentials. This allows the cooling system to adapt to varying ambient temperatures and maintain effective cooling performance across a wide range of operating conditions, improving reliability compared to passive systems.
3Temperature
If thermoelectric devices are used to control temperature of elevator components, then temperature management effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent combines the heating and cooling functions into a single thermoelectric device that can operate in both modes depending on the direction of current flow. This merging of functions reduces the need for separate heating and cooling systems, thereby managing temperature control effectiveness while reducing overall system complexity.
Solution Approach 2:
The thermoelectric device serves multiple functions: it can both heat and cool elevator components, and it also drives the convective airflow system. This multi-functionality allows a single device to handle various temperature control scenarios, reducing the number of components needed and simplifying the overall system architecture.
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
This solution effectively manages temperature for elevator components without the need for large fans, minimizing noise and energy loss while maintaining components within a desired operating range, and can be adapted for both heating and cooling as needed.
Implementation Method 1
A thermoelectric device is positioned to heat air flowing in the warm air duct and to cool air flowing in the cool air duct
Implementation Method 2
natural convective airflow in conjunction with a thermoelectric device to provide cooling or heating of elevator components
Implementation Method 3
employing a warm air duct and a cool air duct with a thermoelectric module positioned between them to create a temperature differential that enhances airflow and reduces noise through the Venturi effect
Data Source
AI summary
Components of an elevator system are cooled using natural convective airflow in conjunction with thermoelectric heating and cooling. Rising air within the hoistway is funneled into a cold air duct (20) and a warm air duct (22). As air flows vertically upward through the cool air duct (20) and the warm air duct (22), a thermoelectric module (14) cools air in the cool air duct (20) and heats air in the warm air duct (22). The cool air stream in the cool air duct (20) is circulated past the elevator component (12), and is drawn upward into a common exhaust duct (28) by the faster flowing warm air stream in the warm air duct (22).