Method and device for the humidification of air
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Solution Overview
Problem
Existing air humidification systems face challenges in preventing silicate precipitation in production environments due to incomplete demineralization of water, leading to electrostatic charging and potential water damage, especially in clean room conditions where minimal mineral presence is critical.
Innovation Solution
The method involves producing fully demineralized ultrapure water by passing it through at least two ion exchange cartridges, measuring electrical conductivity after the first cartridge to detect exhaustion, and replacing both when a threshold is reached, ensuring silicates are bound and preventing their breakthrough, thereby maintaining optimal water quality for humidification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If water is passed through only one ion exchange cartridge, then the device complexity is reduced, but silicates break through when the cartridge is exhausted causing precipitation
Solution Approach 1:
The water treatment system is segmented into multiple ion exchange cartridges with different functions: the first cartridge removes minerals that increase electrical conductivity, while the second cartridge specifically binds silicates. This segmentation allows each cartridge to be optimized for its specific removal task, preventing silicate breakthrough even when the first cartridge is exhausted.
Solution Approach 2:
Electrical conductivity measurement serves as an intermediary indicator to monitor the exhaustion state of the first ion exchange cartridge. Since silicate removal capacity is linked to the first cartridge's mineral removal capacity, measuring conductivity provides an indirect but reliable method to detect when silicate breakthrough may occur, allowing timely replacement before precipitation happens.
2Ease of operation
If ion exchange cartridges are replaced based on operating hours, then replacement timing is simplified, but capacity is not fully utilized or silicates breakthrough
Solution Approach 1:
The system implements continuous feedback monitoring of electrical conductivity to detect ion exchange cartridge exhaustion in real-time. When conductivity exceeds a predetermined threshold, the system automatically triggers an alarm or shutdown signal, ensuring cartridges are replaced at the optimal moment based on actual water quality conditions rather than fixed time schedules.
Solution Approach 2:
The system uses the water's own electrical conductivity property as a self-indicating mechanism for cartridge exhaustion. The water itself provides the feedback signal through its conductivity measurement, eliminating the need for external complex monitoring systems or manual testing, while ensuring consistent water quality control.
3Measurement precision
If conductivity measurement is performed continuously, then ion exchange cartridge exhaustion is detected accurately, but the measurement system becomes complex and costly
Solution Approach 1:
The monitoring function is extracted as a separate, dedicated conductivity measurement device that operates independently from the ion exchange process. This allows the measurement system to be optimized for its specific function of detecting cartridge exhaustion, using simple threshold-based detection rather than complex continuous analysis, reducing overall system complexity while maintaining measurement precision.
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
This approach effectively prevents silicate precipitation and maximizes the ion exchange cartridges' capacity, ensuring the water used for humidification is free of silicates and other minerals, maintaining optimal humidity levels without electrostatic charging, suitable for clean room environments.
Implementation Method 1
the water is passed through at least two ion exchange cartridges one after the other
Implementation Method 2
the electrical conductivity of the water is measured after it has passed through the first ion exchange cartridge
Implementation Method 3
the fully demineralized ultrapure water of increased conductivity is atomized by means of at least one high-pressure nozzle
Implementation Method 4
There the droplets evaporate and increase the humidity
Data Source
Figure 1
AI summary
Method for air humidification, in which fully demineralized ultrapure water of increased conductivity is produced by removing silicates and other ingredients and adding a conductivity-increasing gas from supplied water and the fully demineralized ultrapure water of increased conductivity is atomized by means of at least one high-pressure nozzle (16), with the production of the fully demineralized water, water is passed through at least two ion exchanger cartridges (5, 18) in succession, the electrical conductivity of the water is measured after it has passed through the first ion exchanger cartridge (5) and before it has passed through the second ion exchanger cartridge (18), and the ion exchanger cartridges ( 5,18) can be exchanged for fresh ion exchange cartridges when the measured value of the electrical conductivity reaches a certain threshold. A device for air humidification for the method described is also described.