Upper-Shaft Air Conditioner Blade Guide for Dew Prevention
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Solution Overview
Problem
Dew formation occurs at the upper side of the blade in air conditioner indoor units when the rotary shaft is positioned there, leading to inefficient air discharge and potential moisture issues.
Innovation Solution
The rotary shaft of the blade is positioned in the upper portion of the discharging port, and a guide unit is integrated into the drainage tray to direct cold air discharge to the lower side, preventing air from leaking to the upper side and incorporating an insulating material to prevent heat transfer and dew formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotary shaft of the blade is positioned in the upper portion of the discharging port, then the blade can be opened to discharge air, but dew formation occurs at the upper side of the blade due to cold air discharge
Solution Approach 1:
A guide unit is introduced as an intermediary component between the blade and the discharging port. The guide unit includes a guide body with a guide passage that directs cold air flow away from the upper side of the blade, preventing dew formation while maintaining the upper-positioned rotary shaft configuration for blade operation
Solution Approach 2:
The guide unit is designed to preemptively redirect cold air flow before it can contact the upper side of the blade. By establishing the guide passage structure in advance, the system prevents the harmful effect of dew formation before it occurs, rather than attempting to remove or mitigate it after formation
2Device complexity
If the rotary shaft is positioned in the upper portion, then blade structure is simplified, but cold air leaks to the upper side causing dew formation
Solution Approach 1:
The guide unit acts as a mediator that intercepts and redirects cold air flow. The guide body with its guide passage prevents cold air from reaching the upper side of the blade, eliminating dew formation without requiring repositioning of the rotary shaft or complicating the blade structure
Solution Approach 2:
The discharging port area is segmented into different flow zones by the guide unit. The guide passage creates a dedicated channel for cold air flow that is spatially separated from the blade upper side, preventing harmful interactions while maintaining structural simplicity
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 configuration effectively prevents dew formation by ensuring cold air is discharged to the lower side of the blade, maintaining efficient air flow and reducing moisture issues within the air conditioner.
Implementation Method 1
a heat exchanger that cools indoor air sucked through the suction port
Implementation Method 2
a drainage tray unit that is disposed below the heat exchanger to collect condensate water generated in the heat exchanger
Data Source
AI summary
An indoor unit including a heat exchanger that cools indoor air sucked through a suction port, a cross flow fan that enables the indoor air to be sucked through the suction port, and enables cold air cooled by the heat exchanger to be discharged into a room through a discharging port, a drainage tray unit that is disposed below the heat exchanger to collect condensate water generated in the heat exchanger, and a blade that is rotatably coupled to the drainage tray unit to open the discharging port, and whose rotary shaft is formed in an upper portion of the discharging port. The drainage tray unit includes a guide unit that prevents the cold air from being discharged to an upper side of the blade so that the cold air is discharged to a lower side of the blade when the blade is opened.