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Solution Overview
Problem
Conventional decentralized ventilation systems for heat recovery require significant space and extensive construction, leading to inefficiencies in heat exchange due to uneven air flow and increased energy loss through windows during heating or cooling.
Innovation Solution
A compact installation profile with a heat exchanger material and a fan maintained at an equalization distance from the heat exchanger, allowing for bidirectional airflow and efficient heat recovery, integrated into a wall system to minimize space usage and enhance heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fan is positioned directly adjacent to the heat exchanger material, then the device size is reduced, but a flow dead zone occurs leading to significantly uneven flow through the heat exchanger material and reduced heat recovery efficiency
Solution Approach 1:
The patent introduces an equalization chamber as an intermediary space between the fan and the heat exchanger material. This chamber allows the airflow to be distributed evenly across the entire cross-section of the heat exchanger, eliminating flow dead zones. The equalization chamber acts as a buffer that transforms the concentrated fan airflow into a uniform distribution pattern, thereby maintaining high heat recovery efficiency without requiring the fan to be directly adjacent to the heat exchanger material.
2Loss of energy
If conventional decentralized ventilation systems are installed, then heat recovery is achieved, but significant space is required and extensive construction work is needed
Solution Approach 1:
The patent combines multiple functions into a single integrated profile: the housing serves as both the structural mounting element and the airflow channel, the equalization chamber is integrated within the profile structure, and the heat exchanger material is positioned directly within the flow path. This merging of functions eliminates the need for separate housings, mounting structures, and construction modifications, reducing the overall space requirement and eliminating extensive construction work while maintaining effective heat recovery.
3Length of stationary object
If the fan is positioned close to the heat exchanger material, then the profile dimensions are reduced, but the airflow uniformity deteriorates leading to underutilization of heat storage capacity
Solution Approach 1:
The patent solves the airflow uniformity problem by transitioning from a direct linear arrangement to a multi-dimensional flow path. The equalization chamber introduces a lateral dimension to the airflow, allowing air to distribute across the entire cross-sectional area of the heat exchanger rather than following a concentrated path. This dimensional change ensures uniform airflow distribution while maintaining compact profile dimensions.
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 solution reduces space requirements, improves heat recovery efficiency, and prevents energy loss by ensuring even airflow through the heat exchanger, while also providing burglary protection and noise reduction.
Implementation Method 1
a heat exchanger material (230, 330) located in the flow chamber between the inlet (240, 310) and the outlet (210, 340)
Implementation Method 2
the heat storage capacity of the heat exchanger material not being fully utilized
Implementation Method 3
a ventilation system for bidirectional flow through the heat exchanger material. The ventilation system comprises at least one fan arranged in the flow chamber
Data Source
Figure 1a~1b
Figure 2
Figure 3~5
AI summary
The invention relates to a recessed profile for attachment to a wall system in a building wall, which allows ventilation with an efficient decentralized energy recovery. The invention further relates to a system for ventilating a room.