Fresh Air Module Layout for Motor Noise Isolation
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Solution Overview
Problem
Existing air conditioners with fresh air modules generate noise due to the operation of the motor and fan, which is amplified by the airflow in the duct and enters the indoor space, affecting indoor air quality and user comfort.
Innovation Solution
The fresh air module design includes a motor cover located outside the fresh air duct, with a partition member separating the motor accommodating cavity from the fresh air duct, and a purification assembly to reduce noise amplification and improve air quality by isolating the motor from the airflow and incorporating a purification system to clean outdoor air before it enters the indoor space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor is disposed inside the fresh air duct to drive the wind wheel, then the fan assembly can effectively guide airflow from outdoor to indoor, but the motor operation generates noise that is amplified by the airflow in the duct and enters the indoor space
Solution Approach 1:
The patent divides the housing into separate compartments: the motor is disposed in a motor cavity that is separated from the fresh air duct by a partition member. This segmentation isolates the noise-generating motor from the airflow path, preventing noise amplification while maintaining effective airflow guidance through the wind wheel in the duct.
Solution Approach 2:
The motor is extracted from the fresh air duct and placed in a separate motor cavity outside the duct. The motor shaft extends through the partition member to connect to the wind wheel, allowing the motor to be separated from the noise-prone airflow environment while still driving the wind wheel effectively.
2Object-affected harmful factors
If the motor is isolated from the fresh air duct by placing it outside the duct, then noise amplification is reduced, but the structural complexity increases due to additional components like motor cover and partition member
Solution Approach 1:
The motor cover is integrally formed with the housing, merging two components into one to reduce structural complexity. The partition member is configured to be disposed in the housing and separate the motor cavity from the fresh air duct, creating a simple yet effective noise isolation structure without requiring additional complex assemblies.
Data Source
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AI summary
Disclosed are a fresh air module and an air conditioner. The fresh air module includes a housing with a fresh air duct inside and a fan assembly including a motor and a wind wheel disposed in the fresh air duct. The motor includes a motor body and a motor shaft. The motor shaft is connected with the wind wheel for driving the wind wheel to rotate to guide airflow to flow through the fresh air duct. The motor cover is arranged on the housing and outside of the fresh air duct. A motor accommodating cavity is defined in the motor cover and accommodates the motor body. A partition member is formed between the motor accommodating cavity and the fresh air duct to separate the motor accommodating cavity from the fresh air duct. The motor shaft penetrates through the partition member to connect with the wind wheel.