Ventilation and air conditioning system and method for regulating air opening
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Solution Overview
Problem
Single-duct air conditioner systems face noise reduction challenges due to small duct sizes, which affect user experience by diminishing ventilation volume when blower rotation speed is reduced for noise mitigation.
Innovation Solution
An air-opening varying component is integrated at the ventilation outlet, allowing for dynamic adjustment of air opening size based on blower rotation speed, reducing air flow velocity and noise without altering the blower's speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the rotation speed of the blower is reduced to meet noise reduction requirements, then the noise value decreases, but the ventilation volume diminishes
Solution Approach 1:
The patent applies the dynamics principle by making the air opening size adjustable rather than fixed. The air-opening varying component dynamically changes the opening size based on operating conditions, allowing the system to optimize both noise and ventilation performance at different blower speeds. This resolves the contradiction by enabling the air opening to adapt to different operational states.
Solution Approach 2:
The patent implements parameter changes by varying the air opening size parameter in response to blower rotation speed. The controller adjusts the air opening parameter based on the detected blower speed, creating a dynamic relationship between these two parameters that allows simultaneous optimization of noise reduction and ventilation volume maintenance.
2Productivity
If the rotation speed of the blower is increased to maintain ventilation volume, then the ventilation volume is maintained, but the air flow noise increases
Solution Approach 1:
The system dynamically adjusts the air opening size based on blower speed, allowing high ventilation volume at high blower speeds while controlling noise through appropriate opening size selection. This dynamic coordination enables the system to operate at high productivity without generating excessive air flow noise.
Solution Approach 2:
The controller receives feedback about the blower's rotation speed and uses this information to determine the appropriate air opening size. This feedback mechanism allows the system to automatically adjust the air opening to maintain optimal noise levels while preserving ventilation volume, resolving the contradiction between high productivity and low noise generation.
3Volume of moving object
If a small duct size is used in single-duct systems, then the device size is compact, but the noise value increases due to restricted air flow
Solution Approach 1:
The patent applies dynamics by making the air opening size variable rather than fixed. In small duct systems, the air-opening varying component allows the opening size to adapt to different operating conditions, enabling adequate air flow velocity control that reduces noise while maintaining the compact duct size advantage.
Solution Approach 2:
The system changes the air opening parameter dynamically based on blower speed and operating conditions. This parameter adjustment compensates for the restricted air flow path in small ducts, allowing the system to maintain low noise levels despite the compact duct dimensions by optimizing the effective opening area.
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 solution effectively reduces air flow noise and improves user experience by automatically regulating air opening size in response to blower speed changes, maintaining ventilation volume and noise reduction in both ventilation and cooling/heating states.
Implementation Method 1
the size of the air opening may be actively expanded, and thus the air flow velocity is decreased, so as to reduce the noise generated by the air flow at the air opening
Implementation Method 2
a measure of reducing a rotation speed of a blower
Data Source
AI summary
A ventilation and air conditioning system includes: a ventilation and air conditioning body; and an air-opening varying component provided at a ventilation outlet of the ventilation and air conditioning body.