Rotating Heat Member Layout for Compact Impeller Airflow Switching
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Solution Overview
Problem
Existing air conditioning devices, such as cold fans, require a bulky structure to switch between cold and hot airflow due to the need for a movable heat generation element, which occupies significant interior space.
Innovation Solution
An impeller apparatus with a compact structure is designed, featuring a housing with a first and second air duct connected in series, where a heat generation member is rotatably arranged in the second air duct, allowing it to occupy a small space by being accommodated in a non-blocking area, and driven by a mechanism connected to a power shaft, enabling efficient airflow switching between hot and cold modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a movable heat generation element is mounted inside the cold fan to switch between cold and hot airflow, then cold/hot airflow switching is achieved, but the blowing device becomes bulky due to insufficient interior space
Solution Approach 1:
The heat generation element is designed to rotate between two positions: blocking the second air duct for hot airflow mode and moving to the non-blocking area for cold airflow mode. This dynamic positioning allows a single element to perform multiple functions (heating and airflow switching) without requiring additional space for separate components
Solution Approach 2:
The heat generation element serves dual purposes: it acts as both a heating source and an airflow switching mechanism. By rotating to different positions, it simultaneously controls airflow direction and provides heating function, eliminating the need for separate switching mechanisms and reducing overall device volume
2Adaptability or versatility
If the heat generation element is designed to translate to switch airflow, then cold/hot airflow switching is achieved, but sufficient interior space is required resulting in a bulky structure
Solution Approach 1:
The heat generation element rotates instead of translating, changing from linear motion to rotational motion. This allows the element to switch between blocking and non-blocking positions within a compact circular path, significantly reducing the space required compared to linear translation mechanisms
Solution Approach 2:
The solution transitions from one-dimensional linear translation to two-dimensional rotational movement. The heat generation element rotates within the second air duct, utilizing angular position rather than linear displacement to achieve airflow switching, thereby reducing the space envelope required
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 compact design reduces wind resistance, increases wind quantity and speed, and maintains performance by allowing the heat generation member to occupy minimal space, enhancing the overall efficiency and compactness of the blowing device.
Implementation Method 1
The heat generation member is rotatably arranged in the second air duct. The heat generation member has a blocking state in which the heat generation member blocks the second air duct and a non-blocking state in which the heat generation member does not block the second air duct.
Implementation Method 2
The impeller is arranged in the first air duct
Data Source
AI summary
An impeller apparatus includes a housing, an impeller, and a heat generation member. The housing includes an air duct formed in the housing. The air duct includes a first air duct and a second air duct successively connected to each other. The second air duct has a non-blocking area. The impeller is arranged in the first air duct. The heat generation member is rotatably arranged in the second air duct and has a blocking state and a non-blocking state. In the blocking state, the heat generation member blocks the second air duct, in the non-blocking state, the heat generation member is accommodated in the non-blocking area and does not block the second air duct.