Blade-Free Airflow Direction Control in Air Conditioner Outlets
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Solution Overview
Problem
Conventional air conditioners with blade structures for directing discharge airflow suffer from reduced airflow quantity and increased noise due to turbulence, and are limited by the linear shape of the discharge port.
Innovation Solution
An air conditioner design that uses a main cross-flow fan and an auxiliary centrifugal fan to regulate airflow direction without blades, featuring a main and auxiliary flow path system where the auxiliary fan adjusts airflow around the discharge port, allowing for directional control and maintaining airflow quantity while reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a blade structure is used to control discharge air flow direction, then the air flow direction can be regulated, but the amount of discharged air is reduced and flow noise is increased due to turbulence
Solution Approach 1:
The invention divides the air flow control function into two independent parts: the main fan handles the primary air flow for cooling/heating, while auxiliary fans (first and second auxiliary fans) independently control the air flow direction at the discharge port. This segmentation allows the main fan to operate at full capacity without the turbulence and flow restriction caused by traditional blade structures, while the auxiliary fans provide precise directional control by adjusting the air flow angle at the discharge port.
2Ease of operation
If a blade structure is used to control discharge air flow direction, then the air flow direction can be regulated, but flow noise is increased due to turbulence generated around the blade
Solution Approach 1:
The invention divides the air flow control function into two independent parts: the main fan handles the primary air flow for cooling/heating, while auxiliary fans (first and second auxiliary fans) independently control the air flow direction at the discharge port. This segmentation allows the main fan to operate at full capacity without the turbulence and flow restriction caused by traditional blade structures, while the auxiliary fans provide precise directional control by adjusting the air flow angle at the discharge port.
3Ease of operation
If a linear blade rotation axis is used, then the blade can rotate to control air flow, but the shape of the discharge port is limited to linear shape
Solution Approach 1:
The invention transitions from a traditional linear rotation axis configuration to a multi-dimensional auxiliary fan arrangement. The first auxiliary fan is positioned above the main fan and the second auxiliary fan is positioned below the main fan, creating a vertical dimension for air flow control. This multi-dimensional configuration enables the discharge port to adopt various shapes (circular, oval, rectangular) and allows flexible air flow direction control in multiple planes, breaking the limitation of linear discharge port shapes.
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 maintains consistent airflow rates, reduces noise, and allows for flexible discharge port shapes, such as circular or curved, without the limitations of traditional blade systems.
Implementation Method 1
a main fan provided in the main flow path to suck air via the suction port and to discharge the air via the discharge port
Implementation Method 2
an auxiliary fan configured to suck the air around the discharge port to regulate the direction of the air, which is discharged via the discharge port
Data Source
AI summary
An air conditioner includes a housing provided with a suction port and a discharge port elongated in one direction on the lateral side of the suction port, a main flow path configured to connect the suction port to the discharge port, a main fan provided in the main flow path to suck air via the suction port and to discharge the air via the discharge port, an auxiliary fan configured to suck the air around the discharge port to regulate the direction of the air which is discharged via the discharge port and an auxiliary flow path configured to guide the air sucked by the auxiliary fan. According to the air conditioner, it is possible to control the direction of the discharge airflow without a blade structure, increase the discharge amount, reduce the flow noise, and differentiate the design.