Ventilation window
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Solution Overview
Problem
Existing ventilation windows face challenges in efficiently managing condensation water and require complex duct systems and separate recesses for heat exchangers, leading to increased labor, material costs, and reduced serviceability.
Innovation Solution
A ventilation window design featuring a counter flow heat exchanger integrated within the frame, with blower-operated ducts running the entire distance and intersecting in the heat exchanger, eliminating the need for separate recesses and allowing for controlled condensation water drainage, and incorporating a self-adjusting heating cable to prevent freezing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a separate recess is made in the body structure for the heat exchanger, then the heat exchanger can be installed, but labor and material costs increase and serviceability deteriorates
Solution Approach 1:
The heat exchanger is merged with the frame structure by integrating it into the installation housing that is part of the frame assembly. This eliminates the need for separate recesses in the body structure and allows the entire assembly to be installed as one unit from the interior side, improving both manufacturing ease and serviceability.
Solution Approach 2:
The heat exchanger is nested within the installation housing that is integrated into the frame. This nested arrangement allows the heat exchanger to be accommodated within the existing frame structure without requiring additional space or complex modifications to the body structure.
2Ease of manufacture
If complicated air leading ducts are built in the frame, then air can be led through the frame, but the frame structure becomes complex and tightness deteriorates
Solution Approach 1:
The air leading ducts are extracted from the frame structure and replaced by ducts that run through the installation housing and connect to the ventilation device. This separation allows the frame to maintain its structural integrity and tightness while still achieving the air leading function through a simpler duct arrangement.
3Ease of repair
If the ventilation device is installed from the exterior side, then the heat exchanger can be accessed, but breaking the body structure or coating is required
Solution Approach 1:
Instead of installing the ventilation device from the exterior side as in conventional designs, the device is inverted and installed from the interior side of the frame. This reversal allows access to the heat exchanger and blower through the installation housing without requiring any breaking of the body structure or coating, while still maintaining serviceability.
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 design simplifies manufacturing, reduces labor and material costs, enhances serviceability, and effectively manages condensation water, increasing the volume flow and operational efficiency of the ventilation system while preventing freezing issues.
Implementation Method 1
an arrangement for keeping condensation water melted, such as a trace heating cable installed in the outlet tube
Implementation Method 2
an elongated heat exchanger. The heat exchanger is preferably a counter flow heat exchanger, a cross flow heat exchanger or a heat exchanger with a rotating cell
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The objective of the invention is to facilitate the installation of a ventilation device integrated into a ventilation window on one hand and to enable the serviceability of the ventilation device on the other hand. In accordance with the third aspect, the objective of the invention is to simplify the manufacture of the frame of the ventilation window. The ventilation window comprises a frame (2), at least one glass element (5) located on the inside of a perimeter formed by the frame (2) so that the glass element (5) or a part of it forms a light opening area (7), a ventilation device (50) which has been installed or is installable in an installation housing (14) inside the frame (2) from the vertical side on the interior (S) side and which is equipped with an elongated counter flow heat exchanger (62), which ventilation device (50) comprises at least one blower- operated fresh air duct (65, 62A) for leading fresh air (20) from the exterior (U) to the ventilation device (50) through at least one inlet (51) such as an orifice or nozzle located in the frame (2) on the exterior (U) side and from the ventilation device (50) further to the interior (S) as inlet air (21) through at least one outlet (52) such as an orifice or nozzle located in the frame (2) on the interior (S) side and at least one blower-operated exhaust air duct (66, 62B) for leading exhaust air (22) from the interior (S) to the ventilation device (50) through at least one inlet (53) such as an orifice or nozzle located in the frame (2) on the interior (S) side and from the ventilation device (50) further to the exterior (U) as waste air (23) through at least one outlet (54) such as an orifice or nozzle located in the frame (2) on the exterior (U) side and where the fresh air duct (65, 62A) runs over the entire distance between the inlet (51) and outlet (52) and the exhaust air duct (66, 62B) runs over the entire distance between the inlet (53) and outlet (54) inside the ventilation device (50) and furthermore so that the fresh air duct (65, 62A) and the exhaust air duct (66, 62B) intersect in the counter flow heat exchanger (62).