Indoor unit for air conditioner
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Solution Overview
Problem
Existing indoor units for split-type air conditioners lack effective humidification during heating cycles and are prone to droplet formation on metallic surfaces due to inefficient humidified air discharge, which can lead to bacterial growth and limited humidification capability.
Innovation Solution
The indoor unit design includes a diffuser outlet placed between a front panel and a grill, with a specific angle and positioning to discharge humidified air away from the panel, minimizing droplet formation by enhancing air flow and mixing with discharged air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a diffuser outlet is placed close to the front panel for compact design, then device complexity is reduced, but droplet formation on metallic surfaces increases
Solution Approach 1:
The diffuser outlet is positioned at the lateral outlet rather than on the front panel, changing the discharge direction from frontal to lateral. This spatial reconfiguration allows humidified air to be discharged away from the front panel surface, preventing droplet formation while maintaining a compact overall structure.
Solution Approach 2:
Discharged air from the side grill acts as an intermediary flow that mixes with and carries the humidified air away from the front panel. This intermediary air flow prevents direct contact between humidified air and the front panel surface, eliminating droplet formation.
2Productivity
If humidified air is discharged directly toward the front panel, then humidification effectiveness is improved, but droplet formation and bacterial growth risk increase
Solution Approach 1:
The diffuser outlet is repositioned to discharge humidified air laterally rather than frontally toward the panel. This directional change maintains humidification effectiveness by dispersing moisture into the indoor space while eliminating direct impingement on the front panel surface where droplets could form and support bacterial growth.
Solution Approach 2:
The harmful interaction between humidified air and the front panel is extracted by separating the discharge location from the panel surface. The diffuser outlet is positioned at the lateral outlet, removing the source of droplet formation away from the vulnerable front panel area.
3Productivity
If the diffuser outlet is positioned to maximize humidified air discharge, then humidification performance is improved, but droplet formation at the lateral outlet increases
Solution Approach 1:
The discharge of humidified air from the diffuser outlet is merged with the flow of discharged air from the side grill. This combination allows the stronger discharged air flow to carry the humidified air away from the lateral outlet area, preventing droplet formation while maintaining effective humidified air discharge.
Solution Approach 2:
Discharged air from the side grill serves as an intermediary flow that transports humidified air away from the lateral outlet. This intermediary air current prevents the humidified air from stagnating and forming droplets at the lateral outlet position.
4Loss of substance
If the indoor unit uses condensate from the heat exchanger for humidification, then water consumption is reduced, but foreign substances and bacterial growth increase
Solution Approach 1:
The humidifier is designed to evaporate water directly in the water tank without requiring external water supply or complex purification systems. The continuous evaporation and air circulation through the water tank naturally prevent stagnation and reduce the risk of bacterial growth, allowing the system to serve itself for humidification using readily available water.
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 effectively diffuses humidified air, reducing droplet formation on metallic surfaces and ensuring consistent humidification during both cooling and heating cycles, while maintaining air quality.
Implementation Method 1
a diffuser that connects to the humidified air generator, receives the humidified air, and discharges the humidified air supplied by the humidified air generator
Implementation Method 2
a humidified air generator that evaporates water and generates humidified air
Data Source
AI summary
An indoor unit for an air conditioner, in which a diffuser outlet through which humidified air is discharged is placed between a front panel and a grill that guides the discharged air, may produce the effect that discharged air pushes discharged humidified air, thereby allowing the humidified air to flow far away from a lateral outlet. As a result, formation of droplets on a surface of the front panel made of a metallic material may be minimized.