Indoor AC Display Cooling via Air Gap and Selective Convection
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Solution Overview
Problem
Existing air conditioner indoor units lack effective heat dissipation mechanisms for displays and control units, leading to overheating and potential damage, especially when large displays are used, and do not efficiently utilize natural convection or forced convection for cooling.
Innovation Solution
An indoor air conditioner unit design featuring an air gap between the display panel and the cabinet, allowing natural convection for cooling without a blower fan, and incorporating a blower fan that rotates when necessary to enhance cooling, with an air guide to concentrate air flow to the control unit for improved heat exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a large-sized display is employed to meet user needs and improve visibility, then display visibility is improved, but heat generation increases causing display overheating and potential damage to the indoor unit
Solution Approach 1:
The patent divides the cooling function into two segments: natural convection cooling for normal operation and forced convection cooling for high-temperature conditions. This segmentation allows the system to handle heat dissipation efficiently at different temperature levels without requiring forced convection to be always active, thus cooling the display effectively while maintaining energy efficiency.
Solution Approach 2:
The patent implements a dynamic cooling system where the blower fan operates selectively based on temperature conditions. The control unit monitors display temperature and activates forced convection only when natural convection is insufficient, creating a dynamic response to thermal conditions rather than a static cooling approach.
2Device complexity
If no separate heat dissipation passage or cooling element is provided in the chassis, then device complexity is reduced, but heat dissipation capability is insufficient leading to overheating
Solution Approach 1:
The patent makes the blower fan serve multiple functions: it operates as part of the normal air circulation system during regular operation and switches to a forced convection cooling mode when the control unit temperature exceeds a predetermined threshold. This multi-functionality eliminates the need for a separate dedicated cooling fan, reducing device complexity while ensuring adequate heat dissipation capability.
Solution Approach 2:
The system uses its existing air circulation infrastructure (blower fan and passages) to provide self-cooling when needed. The control unit monitors its own temperature and triggers the blower fan to activate forced convection, allowing the system to service its own cooling needs without external intervention or additional dedicated cooling components.
3Use of energy by moving object
If natural convection is used for cooling without rotating a blower fan, then energy consumption is reduced and device simplicity is maintained, but cooling efficiency is limited and may not suffice under high heat generation conditions
Solution Approach 1:
The patent implements a dynamic cooling system where the blower fan operates selectively based on temperature conditions. The control unit monitors display temperature and activates forced convection only when natural convection is insufficient, creating a dynamic response to thermal conditions rather than a static cooling approach.
Solution Approach 2:
The system employs periodic monitoring of temperature conditions and activates forced convection only when needed (when temperature exceeds threshold). This periodic activation rather than continuous operation reduces energy consumption while ensuring cooling efficiency is maintained when heat generation is high.
4Device complexity
If heat generated in the control unit is not effectively dissipated, then device simplicity is maintained, but overheating occurs causing damage to the indoor unit
Solution Approach 1:
The patent implements a feedback mechanism where the control unit continuously monitors the temperature of the control unit and the display. When the temperature exceeds a predetermined threshold, the control unit activates the blower fan to increase air flow and enhance cooling. This closed-loop feedback system ensures reliable operation by responding to thermal conditions in real-time without requiring complex pre-designed cooling structures.
Solution Approach 2:
The patent makes the blower fan serve multiple functions: it operates as part of the normal air circulation system during regular operation and switches to a forced convection cooling mode when the control unit temperature exceeds a predetermined threshold. This multi-functionality eliminates the need for a separate dedicated cooling fan, reducing device complexity while ensuring adequate heat dissipation capability.
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 design effectively dissipates heat generated in displays and control units through natural and forced convection, preventing overheating and damage, while improving visibility and image clarity on the display panel.
Implementation Method 1
allowing natural convection for cooling without a blower fan
Implementation Method 2
incorporating a blower fan that rotates when necessary to enhance cooling
Implementation Method 3
with an air guide to concentrate air flow to the control unit for improved heat exchange efficiency
Data Source
Figure 1~2
Figure 3~4a
Figure 4b~5
AI summary
An indoor unit of an air conditioner according to the present disclosure includes: a cabinet having an inlet through which outside air is introduced and an outlet through which air is discharged; a heat exchanger disposed in the cabinet; a blower fan disposed in the cabinet; a display panel comprising a display unit, the display panel being coupled to one surface of the cabinet; and an air gap that defines an empty space between the display panel and the cabinet, wherein outside air is introduced through the air gap, is heat-exchanged with the display unit, and is discharged to an outside through the air gap.