Blowing unit and air conditioner
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Solution Overview
Problem
Existing air flow direction adjustment mechanisms in air conditioning systems, such as those described in JP 2007-155309 A, suffer from inaccuracies due to air being blown out through gaps near the ends of the air flow direction adjustment flap, leading to suboptimal control over air flow direction.
Innovation Solution
A blow-out unit with a plate member and guide portion that can turn on a rotating shaft, allowing precise control over air flow direction by adjusting the angle of the plate member and the inclination of the guide portion, ensuring air is directed through a controlled clearance between the plate member and guide portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rotating shaft is located at the center of the air flow direction adjustment flap, then the structure is simple and easy to manufacture, but air is blown out through gaps near the ends of the flap leading to inaccurate air flow direction adjustment
Solution Approach 1:
The patent applies asymmetry by positioning the rotating shaft at an end of the air flow direction adjustment flap rather than at the center. This asymmetric configuration allows the flap to rotate about one end, creating a different gap distribution pattern that improves air flow direction control while maintaining manufacturing simplicity
Solution Approach 2:
The patent applies local quality by creating a specific gap configuration where the gap between the flap and the housing is minimized at the rotating shaft end. This localized gap control ensures that air flow is directed precisely through the intended opening while preventing leakage through gaps at the rotation axis
2Device complexity
If the air flow direction adjustment flap is used to control air flow direction, then the structure remains simple, but the degree of freedom for air flow direction adjustment is limited
Solution Approach 1:
The patent applies dynamics by enabling the air flow direction adjustment flap to rotate freely about its end-mounted rotating shaft, allowing dynamic adjustment of air flow direction. This rotational freedom provides greater adaptability in directing air flow to different locations while maintaining a simple single-flap structure without complex multi-component mechanisms
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
With regard to a blow-out unit placed at a blow-out port of an air flow path through which air is blown out toward a room, the blow-out unit configured to blow out, toward the room, air supplied thereto through the air flow path, it has been required to easily control an air flow direction with a simple structure. A blow-out unit (1, 100) is placed at a blow-out port (P) of an air flow path (S) through which air is blown out toward a room, and is configured to blow out, toward the room, air supplied thereto through the air flow path. The blow-out unit includes a first member (10) and a second member (20, 200) each placed in the blow-out port (P). The first member (10) includes a plate member (10) including a first side (11a) and configured to turn on a rotating shaft (15) located away from the first side so that the first side (11a) moves away from the blow-out port toward the air flow path. The second member (20, 200) is different in placement position from the plate member in the blow-out port, and extends along the first side (11a) of the plate member (10). The plate member (10) and the second member (20, 200) change a first air flow direction of air to be blown out toward the blow-out port through the air flow path, to a second air flow direction. The plate member (10) turns to change the second air flow direction.