Ventilation Device Airflow Direction Control to Reduce Wall Soiling
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Solution Overview
Problem
Existing ventilation devices cause soiling of walls due to dust-laden air being blown directly onto them, limiting installation flexibility and degrading user comfort and design, as they lack airflow direction control mechanisms.
Innovation Solution
Incorporating an airflow-direction changeable component and an air-passage closing wall to redirect the airflow, allowing for adjustable discharge directions and reducing horizontal airflow impact on walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If air is blown out in a horizontal direction toward a wall, then the ventilation device can be installed closer to the wall, but the wall becomes soiled due to dust carried by the air
Solution Approach 1:
The patent introduces an airflow direction louver that can be adjusted to change the direction of discharged air dynamically. By rotating the louver, the air discharge direction can be switched between horizontal (toward the wall) and diagonal/vertical (away from the wall), allowing the system to adapt to different installation scenarios and avoid wall soiling when needed
Solution Approach 2:
The patent changes the parameter of air discharge direction by incorporating an adjustable louver mechanism. The louver can be rotated to different angles (0°, 45°, 90°) to alter the airflow trajectory, thereby controlling whether air impinges on the wall or is directed away from it, solving the contradiction between mounting flexibility and wall protection
2Object-affected harmful factors
If air is blown out in a downward direction, then the airflow does not impinge on walls, but the mounting position is limited and design flexibility is degraded
Solution Approach 1:
The adjustable airflow direction louver enables the system to dynamically switch between downward discharge (avoiding wall soiling) and horizontal discharge (enabling flexible mounting positions). This dynamic adjustment capability resolves the contradiction by allowing the user to select the appropriate discharge direction based on the specific installation environment
Solution Approach 2:
The louver mechanism provides multiple discharge directions (horizontal, diagonal, vertical) from a single ventilation device, making it universally applicable to various installation scenarios. The device can function in both wall-mounted positions close to the wall and positions where downward discharge is preferred, enhancing overall versatility
3Object-affected harmful factors
If a distance equal to or larger than predetermined spacing is secured from the wall, then air does not impinge on the wall, but the mounting position is limited
Solution Approach 1:
The adjustable louver eliminates the need for maintaining a predetermined distance from the wall by dynamically controlling the airflow direction. When the louver is adjusted to direct air away from the wall (diagonal or vertical discharge), the device can be mounted closer to the wall without causing soiling, thereby increasing mounting position flexibility
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 prevents wall soiling, enhances installation flexibility, and improves user comfort by allowing adjustable airflow directions and reducing dust deposition on walls and other surfaces.
Implementation Method 1
a heat exchanger (11) for exchanging heat between the outdoor air and the indoor air thus taken
Implementation Method 2
a heat exchanger (11) for exchanging heat between the outdoor air and the indoor air thus taken
Data Source
Figure 1~2
Figure 3
Figure 4(a)~4(b)
AI summary
A ventilation device (100) includes: a main body (1); an air exhaustion fan (9) arranged inside the main body (1) and introducing, into the main body (1), exhaustion air to be exhausted from a space; an air supply fan (8) arranged inside the main body (1) and introducing, into the main body (1), supply air to be supplied; a heat exchanger (11) exchanging heat between the supply air delivered by the air exhaustion fan (9) and the exhaustion air delivered by the air supply fan (8); a panel (2) arranged in front of the main body (1) where a front surface of the main body is provided, the front surface, an air outlet (7) defined by the front surface of the main body (1) and a back surface of the panel (2) and allowing the supply air after heat exchange for the supply air by the heat exchanger (11) to be blown out therefrom; and an air-passage closing wall (40) arranged at any one of end portions of the air outlet (7) in a horizontal direction of the main body for restricting a flow of the air to be blown out through the air outlet (7) in the horizontal direction.