Local air cleaner
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional local air cleaning apparatuses consume high power to maintain a clean air space, especially when not in use, leading to inefficiency and increased energy costs.
Innovation Solution
A local air cleaning apparatus with a push hood system that adjusts airflow velocity and gap area between push hoods to maintain cleanliness while reducing power consumption by switching to an energy-saving mode, utilizing a controller to manage fan speed and airflow direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the local air cleaning apparatus operates continuously to maintain high cleanliness in the work space, then the cleanliness level is maintained, but power consumption increases
Solution Approach 1:
The patent implements periodic action by switching between normal operation mode and energy-saving mode based on work status detection. When no work is detected (via sensors monitoring worker presence or equipment operation), the system transitions to energy-saving mode with reduced airflow, maintaining minimal cleanliness while consuming less power. When work is detected, it returns to normal mode for full cleanliness maintenance.
Solution Approach 2:
The patent applies dynamics by making the airflow velocity and operational mode adjustable and responsive to real-time conditions. The controller dynamically modifies fan speed and airflow characteristics based on detected work status, transitioning between high-performance normal mode and low-consumption energy-saving mode, thereby optimizing the balance between cleanliness maintenance and power consumption.
2Reliability
If the airflow velocity is increased to maintain high cleanliness, then the cleanliness level improves, but power consumption increases
Solution Approach 1:
The patent implements parameter changes by adjusting airflow velocity as a variable parameter based on operational needs. In energy-saving mode, the system reduces airflow velocity to lower power consumption while maintaining sufficient cleanliness for idle periods. In normal mode, airflow velocity is increased to ensure high cleanliness during active work, thereby dynamically optimizing the parameter to balance performance and energy usage.
Solution Approach 2:
The patent applies partial action by providing different levels of airflow based on requirements. During idle periods, only minimal airflow (partial action) is supplied to maintain basic cleanliness, rather than continuous full airflow. During active work, full airflow is restored. This partial operation during non-critical periods reduces overall power consumption while maintaining acceptable cleanliness standards.
3Reliability
If the gap area between push hoods is reduced to maintain cleanliness, then the clean air space is maintained, but the workability and access for workers deteriorates
Solution Approach 1:
The patent applies dynamics by making the gap area between push hoods adjustable rather than fixed. The system can dynamically modify the gap width based on operational requirements - reducing it during active work to maintain cleanliness when needed, and increasing it during idle periods to improve worker accessibility and comfort, thereby balancing cleanliness maintenance with operational ease.
Solution Approach 2:
The patent implements parameter changes by treating the gap area as a variable parameter that can be modified according to work status. The controller adjusts the gap dimension based on detected operational needs, allowing optimization of both cleanliness (smaller gap) and workability (larger gap) at different times, rather than being constrained by a fixed gap measurement.
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 apparatus effectively reduces power consumption while maintaining a high level of cleanliness in the work space, achieving ISO Class 1 cleanliness even in energy-saving mode, with power consumption reduced to about 1/3 of normal mode levels.
Implementation Method 1
a push hood 2 that blows out a uniform flow of cleaned air
Implementation Method 2
arranged so as to face an air collision face W with a wall or a partition, thereby being able to make a region between the air flow opening face and the air collision face a clean air space having a higher level of cleanliness
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A local air cleaning apparatus 1 comprises a pair of push hoods 2 each including an air flow opening face 23 that blow out a cleaned uniform air flow through guides 3 associated with each push hood. The cleaned uniform air flows blow out from the each air flow opening face colliding with each other inside an open region between the guides to flow outside the open region, so as to cause cleanliness to higher inside the guides and inside the open region than other regions. Additionally, the apparatus 1 includes at least one of a device for measuring pressures inside the guides 3 and the push hoods 2, a device for measuring the cleanliness inside the guides 3 or of the open region, and a device for measuring a gap area between the opening faces of the guides 3, and, to ensure the cleanliness from a result of the measurement, controls such that a flow velocity of the cleaned uniform air flows blown out from the air flow opening faces 23 can be decelerated or accelerated.