Indoor AC Air Guide Plate Layout for Bell-Mouth Noise Reduction
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Solution Overview
Problem
Existing indoor air conditioner units face challenges in maintaining the capacity of the electric components box while minimizing noise generation, as the placement of the electric components box near the bell-mouth intake port leads to air flow changes and noise due to air collisions.
Innovation Solution
The introduction of an air guide plate positioned to face the inflow port of the bell-mouth, which redirects air flows to prevent collisions and noise, allowing the electric components box to maintain its capacity without downsizing or increasing overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the electric components box is disposed to face the inflow port of the bell-mouth, then the capacity of the electric components box is secured, but noise is generated due to air flow changes and air collisions
Solution Approach 1:
An air guide plate is introduced as an intermediary component between the bell-mouth and the electric components box. The air guide plate redirects the air flow from the bell-mouth, preventing direct collision with the electric components box while maintaining the box's capacity. This mediator resolves the conflict by controlling air flow path without requiring modification of the electric components box structure or position.
2Object-generated harmful factors
If the electric components box is formed into a concave shape to prevent facing the intake port, then noise generation is suppressed, but the capacity of the electric components box is reduced
Solution Approach 1:
Instead of modifying the electric components box into a concave shape, the invention uses an air guide plate as a separate intermediary component. This plate is positioned to redirect air flow away from the box, allowing the box to maintain its original capacity while still suppressing noise generation through controlled air flow management.
Solution Approach 2:
The invention separates the noise control function from the electric components box structure itself. By introducing a distinct air guide plate component, the noise suppression function is segmented from the box's primary function of housing electrical components, allowing both functions to be optimized independently without compromising capacity.
3Volume of moving object
If the electric components box is disposed to face the inflow port, then the overall size of the indoor unit is reduced, but air flow collisions cause noise
Solution Approach 1:
The air guide plate serves as a space-efficient intermediary that redirects air flow without requiring additional overall unit size. By positioning the plate strategically, the design maintains compact dimensions while preventing air flow collisions that would generate noise, thus resolving the size-noise trade-off.
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 suppresses noise generation by redirecting air flows, ensuring the electric components box retains its capacity without the need for shape modifications or increased size, thus addressing both noise reduction and capacity concerns.
Implementation Method 1
an air guide plate that is disposed so as to face the inflow port in the axial direction, and is disposed so as to face an inside of the electric components box in a radial direction
Data Source
AI summary
An indoor unit of an air conditioner includes a blower that has an impeller that is rotatable around a rotation axis; a bell-mouth having an inflow port that opens to a first side in an axial direction of the rotation axis, and that is located on the first side of the blower; an electric components box that is located on the first side of the bell-mouth, and that has at least a portion thereof disposed so as to face the inflow port in the axial direction, and an air guide plate that is disposed so as to face the inflow port in the axial direction, and is disposed so as to face an inside of the electric components box in a radial direction with the direction of rotation being a center thereof.