Elevator Door Frame Chamber Integrating Power Unit
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Solution Overview
Problem
Elevator shaft closures face challenges with the integration of electronic power units due to heat buildup and noise interference, which can lead to reliability issues and increased installation and material costs, particularly in narrow door frame cross-sections.
Innovation Solution
Integrating the electronic power unit within the elevator control arrangement in a door frame chamber, where waste heat is dissipated into the elevator shaft using cooling systems and strategically arranged components, minimizing the need for additional screening and reducing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the electronic power unit is arranged in the elevator shaft, then heat dissipation is improved, but noise interference and electromagnetic disturbance increase
Solution Approach 1:
The patent introduces a door frame chamber as an intermediary space between the elevator shaft and the electronic power unit. This chamber acts as a buffer zone that provides thermal management while isolating the electronic components from noise and electromagnetic interference in the shaft environment
Solution Approach 2:
The electronic power unit is nested within the door frame chamber, which itself is part of the elevator shaft closure structure. This nested arrangement allows the power unit to benefit from the shaft's thermal environment while being protected by the chamber from harmful factors
2Ease of manufacture
If the electronic power unit is integrated in the door frame chamber, then installation cost and material outlay are reduced, but heat dissipation becomes more challenging
Solution Approach 1:
The door frame chamber serves multiple functions: it provides structural support for the closure, creates a protected enclosure for the electronic power unit, and acts as a thermal management space. This multi-functionality reduces the need for separate cooling structures and minimizes material requirements
Solution Approach 2:
The chamber design allows natural convection currents to provide cooling for the electronic power unit without requiring active cooling systems. The structure itself serves its own thermal management needs through strategically designed ventilation paths
3Reliability
If separate power supply lines are used for the electronic power unit, then power supply reliability is improved, but installation complexity and cost increase
Solution Approach 1:
The patent combines the power supply function with the existing elevator control arrangement's electrical infrastructure. The electronic power unit utilizes the same power supply lines that serve the control unit, eliminating the need for separate dedicated power lines while maintaining system reliability through shared infrastructure
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 reduces installation costs, eliminates the need for separate power supply lines, and enhances reliability by effectively managing heat and noise, while maintaining the door frame at room temperature and preventing fire propagation.
Implementation Method 1
waste heat is dissipated into the elevator shaft using cooling systems
Data Source
AI summary
A door frame of an elevator shaft closure has a chamber in which an elevator control arrangement is arranged. The elevator shaft closure separates an elevator shaft of a building from a story of the building. The elevator control arrangement includes an elevator control unit and at least one electronic power unit, which is connectible with an elevator motor.