Air Purifying Unit with Integrated Fan Guide to Reduce Leakage
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Solution Overview
Problem
Existing air ventilation devices have low usability due to air leakage between the fan and filter components, and are limited in functionality as they are fixedly installed in windows or walls, unable to perform both ventilation and air purification effectively.
Innovation Solution
An air purifying unit with a housing containing an air intake and discharge unit, a blowing fan, and an integrated fan guide that surrounds the fan and air purifier, reducing air leakage and allowing for detachable installation in windows or walls, enabling both ventilation and air purification functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fan guide and filter guide frame are separate parts, then assembly and maintenance become easier, but air leaks through the joints causing poor sealing performance
Solution Approach 1:
The patent merges the fan guide and filter guide frame into a single integrated fan guide assembly. The blowing fan is coupled directly to the housing with its outer periphery surrounded by the fan guide, which also accommodates the air purifier. This integration eliminates the joint between separate components, preventing air leakage while maintaining ease of assembly as a unified structure.
2Adaptability or versatility
If the ventilation device is fixedly installed in window or wall, then ventilation function is achieved, but usability is limited and cannot perform air purification
Solution Approach 1:
The patent designs the air purifying unit with universal applicability for both ventilation and air purification functions. The integrated fan guide accommodates either an air purifier for indoor air cleaning or operates with the housing installed in windows/walls for ventilation. This multi-functional design allows the same basic structure to serve different purposes without requiring separate devices.
Solution Approach 2:
The patent enables the device to dynamically adapt its function based on installation configuration. When installed in windows or walls, it performs ventilation by circulating air between indoor and outdoor spaces. When used indoors without window installation, it performs air purification. The blowing fan and air purifier can be configured for different operational modes, providing dynamic functionality.
3Reliability
If separate sealing treatment is added to prevent air leakage, then sealing performance improves, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent prevents air leakage by merging the fan guide and filter guide frame into a single integrated structure. The fan guide itself forms the enclosure that guides air flow from the air purifier to the blowing fan, eliminating the need for separate sealing components at the joint interface. This design achieves reliable sealing without adding assembly complexity.
Data Source
AI summary
An air purifying unit in which leakage of air flowing between a filter and a blowing fan is significantly reduced, and an air cleaning/ventilation device including the same, are provided. In addition, there are an air cleaning/ventilation device detachably installed in a window, used as a ventilation device, and used as an indoor air cleaning device.