Projector Filter Dust Removal via Impact Timing Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing projection-type image display apparatuses face inefficiencies in dust removal from filters, leading to increased pressure loss and reduced cooling efficiency, due to insufficient vibration methods in existing technologies.
Innovation Solution
A projection-type image display apparatus with an impact application section that strikes the filter at a controlled timing when the filter is moving towards it, maximizing the relative speed and impact to efficiently remove dust, thereby reducing maintenance frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If vibration is applied to the filter by means of a vibration application section, then dust collected on the filter can be shaken off, but the impact applied to the filter is relatively small and dust removal efficiency is insufficient
Solution Approach 1:
The patent applies mechanical vibration to the filter through a vibration application section to loosen and remove accumulated dust particles from the filter surface, addressing the harmful dust accumulation without requiring manual cleaning
Solution Approach 2:
The patent implements periodic striking action at specifically controlled timing when the filter is moving toward the impact application section, creating enhanced periodic impacts that maximize dust removal efficiency while minimizing filter damage
2Productivity
If the filter is struck with impact to remove dust, then dust removal efficiency improves, but the filter may be damaged or require more frequent replacement
Solution Approach 1:
The patent uses periodic striking at controlled intervals and specific timing (when filter moves toward impact section) to achieve effective dust removal while distributing mechanical stress over time, preventing cumulative damage that would occur with continuous or random impacting
Solution Approach 2:
The patent changes the timing parameter of impact application to coincide with the filter's natural movement cycle, maximizing impact effectiveness while minimizing the force required and reducing potential damage to the filter structure
3Loss of time
If the filter is not cleaned regularly, then maintenance frequency decreases, but pressure loss increases and cooling efficiency is reduced
Solution Approach 1:
The patent enables the filter to clean itself through automated vibration and impact mechanisms that remove dust accumulation without requiring manual intervention, allowing the system to maintain itself between maintenance cycles
Solution Approach 2:
The patent implements periodic self-cleaning cycles that restore filter performance before significant pressure loss occurs, maintaining cooling efficiency while extending the time between manual maintenance operations
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
The solution effectively increases the impact on the filter, allowing for more efficient dust removal and reduced maintenance needs, particularly in apparatuses like projectors hung from ceilings.
Implementation Method 1
an impact application section configured to strike the filter section
Implementation Method 2
a timing when the filter section vibrating by striking of the impact application section is moving toward the impact application section
Data Source
AI summary
Provided is a projection-type image display apparatus in which dust collected on a filter can be removed more efficiently. The projection-type image display apparatus includes an image projection section configured to generate and project an image, a cabinet section that houses the image projection section in an interior and is provided with at least one or more air inlets, a passage section through which outside air taken in from the air inlet flows, a filter section provided in the passage section, an impact application section that strikes the filter section, and a control section that controls the impact application section so as to strike the filter section at a timing when the filter section vibrating by striking of the impact application section is moving toward the impact application section.