Indirect Airflow Blower Layout for Quiet Wind Direction Control
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Solution Overview
Problem
Existing blowers discharge air directly to users, causing discomfort due to strong air flow, and require movement or rotation to change wind direction, leading to power consumption and noise/vibration.
Innovation Solution
A blower design with a fan, lower body, side body, and rear body that allows indirect air discharge through multiple flow paths, enabling adjustable wind direction without movement or rotation, and includes slits and dampers to control airflow direction and intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If air is discharged directly to the user, then the air can be sent to a long distance, but the air flow becomes excessively strong causing discomfort
Solution Approach 1:
The blower housing is divided into multiple sections (intake section, middle section, discharge section) with multiple air discharge openings distributed across different surfaces. This segments the single strong air flow into multiple weaker streams, reducing user discomfort while maintaining effective cooling distance
Solution Approach 2:
Different sections of the blower housing have different numbers and positions of air discharge openings tailored to their specific functions. The front surface has openings for direct cooling, while side surfaces have openings for lateral air distribution, creating locally optimized air flow patterns that balance distance and comfort
2Adaptability or versatility
If the fan is moved or rotated to change wind direction, then the wind direction can be adjusted, but power is consumed and noise or vibration is generated
Solution Approach 1:
Instead of changing wind direction by moving the fan in three-dimensional space, the invention uses multiple fixed air discharge openings arranged in different spatial directions (front, sides, rear). The damper controls which directional openings are active, achieving wind direction adjustment by selecting from pre-established directional paths rather than physically reorienting the fan
Solution Approach 2:
A controllable damper is introduced as an intermediary device between the fan and the air discharge openings. The damper selectively opens or closes different air discharge openings to redirect airflow without moving the fan itself, eliminating the need for mechanical movement while achieving directional control
3Adaptability or versatility
If the fan is moved or rotated to change wind direction, then the wind direction can be adjusted, but noise or vibration is generated
Solution Approach 1:
The invention achieves wind direction adjustment by utilizing multiple fixed air discharge openings positioned in different spatial dimensions (front surface, side surfaces, rear surface). The damper selectively activates different directional openings,实现 directional control without mechanical movement of the fan, thereby eliminating noise and vibration associated with moving parts
Solution Approach 2:
The controllable damper serves as a noise-free intermediary that redirects airflow by opening or closing specific air discharge openings. This eliminates the need for mechanical movement of the fan or housing, thereby preventing generation of noise and vibration while maintaining wind direction adjustability
4Object-affected harmful factors
If multiple air discharge openings are provided, then the airflow can be distributed to reduce discomfort, but the device complexity increases
Solution Approach 1:
The blower housing performs multiple functions: it serves as the structural enclosure, provides multiple air discharge openings in different directions, and integrates the damper control mechanism. This multi-functionality allows the housing to manage complex airflow distribution without requiring separate dedicated components for each function, thereby limiting the increase in overall device complexity
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
Provides a pleasant air discharge experience by varying airflow direction and intensity, allowing concentrated or diffused air flow and indoor circulation without noise or vibration.
Implementation Method 1
a fan configured to generate an air flow
Implementation Method 2
Korean Patent Application Laid-Open No. 10-2011-0099318 and Korean Patent Application Laid-Open No. 10-2013-0045421 disclose a fan that blows air using the Coanda effect
Data Source
AI summary
A blower is disclosed. The blower of the present disclosure comprises: a fan for producing an air flow; a lower body providing an inner space in which the fan is installed and having an intake hole through which air passes; a side body disposed on the lower body and providing an inner space in which air discharged from the fan flows; and a rear body disposed at the rear of the side body, wherein: the side body includes an opening formed at the rear end of the side body and communicating with the inner space of the side body; and the rear body covers a part of the side body at the rear of the opening.