Indoor AC Unit Casing Layout for Stability and Controller Cooling
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Solution Overview
Problem
The existing air conditioning device indoor unit faces stability issues due to a high center of gravity caused by the heavy controller, which also experiences inadequate cooling and heat-related failures from its placement near the exhaust port, and requires enhanced casing strength to support components like the fan and heater.
Innovation Solution
The indoor unit design includes an electric component supporting member positioned adjacent to the fan in the air circulation space, acting as a strengthening element for the casing, which lowers the center of gravity, increases stability, and promotes cooling of the heat-generating components by placing them within the air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the controller is arranged in the upper portion of the casing adjacent to the exhaust port, then the controller can be installed in a compact space, but the center of gravity becomes high and stability deteriorates
Solution Approach 1:
The controller is inverted from its conventional upper-positioned location to a lower position adjacent to the fan, reversing the typical arrangement. This inversion lowers the center of gravity to improve stability while the controller remains integrated into the casing structure for compact space utilization.
2Device complexity
If the controller is arranged in the upper portion of the casing, then installation space is saved, but the heat-generating component cannot be sufficiently cooled
Solution Approach 1:
The fan serves as an intermediary element that provides cooling air flow to the controller. By positioning the controller adjacent to the fan, the fan's air flow acts as a mediator to cool the heat-generating components effectively, while the controller remains integrated into the compact casing structure.
3Device complexity
If the controller is placed near the exhaust port, then space is optimized, but the controller is affected by heater heat and may fail
Solution Approach 1:
The controller is extracted from the conventional location near the exhaust port and repositioned to a different area adjacent to the fan. This extraction removes the controller from the harmful thermal environment near the exhaust port and heater, while maintaining space optimization through integrated positioning within the casing.
4Strength
If the casing is made stronger to support heavy components, then structural integrity is improved, but device complexity and weight increase
Solution Approach 1:
The support structures and casing elements are merged into an integrated design where existing casing components serve dual purposes: maintaining structural integrity while supporting heavy components like the fan and controller. This merging reduces the need for additional separate strengthening elements, thereby reducing overall structural complexity.
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 enhances the stability and strength of the indoor unit while effectively cooling the electric components, preventing heat-related failures and ensuring efficient operation.
Implementation Method 1
a fan (17) arranged inside the casing (29), and generating an air flow flowing from the intake port (31) to the exhaust port (30)
Implementation Method 2
a heat exchanging device (15) arranged below the fan (17) inside the casing (29) to exchange heat with the air taken into the casing (29) from the intake port (31)
Data Source
AI summary
An indoor unit for an air conditioning device that can increase the strength of a casing of the indoor unit, increase the stability of the indoor unit, and promote cooling of an electric component is disclosed. The indoor unit for the air conditioning device includes a casing formed with an intake air port in a lower portion thereof, and formed with an exhaust air port in an upper portion thereof, a fan arranged inside the casing, and generating air flow from the intake port to the exhaust port, a heat exchanging device arranged below the fan inside the casing to exchange heat with the air taken into the casing from the intake port, and an electric component case provided at a position adjacent to a lateral side of the fan in a circulation space of the air in the casing and configured as a strengthening member of the casing.