Vaporization-type humidification unit, vaporization-type humidification unit control method, and sheet manufacture device
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Solution Overview
Problem
In vaporization type humidifiers, varying air flow rates to control humidification can lead to non-uniformity in sheet formation during air transport in dry type waste paper recycling machines, affecting material transport and accumulation distribution.
Innovation Solution
A vaporization type humidification unit controls the air flow rate of a first blower based on humidity measurements, adjusting the difference in air flow rates with a second blower by taking in or releasing outside air, maintaining a constant air flow rate from the second blower while varying the mixing ratio to control humidification amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the air flow rate is varied to control humidification amount, then humidification control is achieved, but air transport stability and sheet uniformity deteriorate
Solution Approach 1:
The air flow system is segmented into two independent blowers (first blower for humidification air, second blower for transport air), allowing separate control of humidification and transport functions. This enables humidification control without affecting transport air flow rate, resolving the contradiction between ease of humidification control and sheet uniformity.
Solution Approach 2:
The patent merges humidification air flow and transport air flow into a single discharge outlet, combining two functions that were previously separate. The mixed air flow from both blowers is discharged together, allowing independent control of each blower while achieving both humidification and transport functions through a unified discharge system.
2Quantity of substance
If the air flow rate of the first blower is increased for humidification, then humidification amount increases, but the difference in air flow rates between first and second blowers causes transport air instability
Solution Approach 1:
The system dynamically balances air flow rates from two separate blowers by introducing outside air through an opening. When the first blower's air flow rate increases for humidification, outside air is introduced to compensate, maintaining stable total air flow and transport conditions while achieving increased humidification.
Solution Approach 2:
Outside air introduced through the opening acts as an intermediary element that balances the air flow difference between the two blowers. This mediator air flow compensates for variations in the first blower's output, maintaining transport air stability while allowing humidification control.
3Device complexity
If a single blower is used for both humidification and transport, then device complexity is reduced, but control flexibility and humidification precision deteriorate
Solution Approach 1:
The single blower function is segmented into two separate blowers: one dedicated to humidification air supply and another to transport air supply. This segmentation provides independent control capability for each function, enabling flexible humidification control without compromising transport performance, while the unified discharge structure keeps overall system complexity manageable.
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 allows for easy control of humidification while maintaining a constant air flow rate from the second blower, preventing stagnation and adhesion of raw materials, and suppressing non-uniformity in sheet density without affecting transport air or sheet accumulation units.
Implementation Method 1
a vaporization unit (310) that evaporates moisture
Implementation Method 2
a first blower (320) that discharges air (humid air) to be sucked by the vaporization unit (310)
Implementation Method 3
a second blower (340) that discharges air that has been sucked by the first blower (320)
Data Source
Figure 1
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Figure 3
AI summary
A vaporization type humidification unit that can vary a humidification amount by varying air flow rate is provided. The vaporization type humidification unit includes a vaporization unit that evaporates moisture, a first blower that sucks humidification air humidified by the vaporization unit, a transport tube that is connected to the first blower and through which the air discharged from the first blower is transported, a second blower connected to the transport tube and discharging the humidification air discharged from the first blower side toward outside, an opening provided in a middle of the transport tube, a humidity measurement unit installed on a discharging side of the second blower, and a control unit that controls an air flow rate discharged from the first blower and the second blower, in which the control unit controls the air flow rate discharged from the second blower to a desired value and controls the air flow rate discharged from the first blower based on a humidity measured by the humidity measurement unit.