Liquid Degassing Under Reduced Pressure Using Pump Vibration
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Solution Overview
Problem
Existing degassing methods for liquids in cooling or heating systems, such as those described in EP-933,109, are inefficient and require additional vibration sources or costly control arrangements, leading to prolonged gas separation times and increased costs.
Innovation Solution
The method involves subjecting the liquid to vibrations in a section with reduced pressure, utilizing a pump or vibrating element to generate frequencies between 40 to 125 Hz, which enhances gas separation from liquid molecules without the need for additional vibration sources, and incorporates a reduced-pressure vessel and venting means to facilitate gas discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spray nozzles and built-in degassing elements are used to increase liquid surface area, then gas separation is promoted, but the spray nozzle becomes soiled and control arrangements are required which increase costs
Solution Approach 1:
The patent applies mechanical vibration to the liquid in the degassing vessel to enhance gas separation. The vibration causes the liquid to move dynamically, increasing the liquid-gas interface area and promoting gas bubble detachment and rise to the surface, thereby improving degassing efficiency without requiring complex control arrangements or spray nozzles that become soiled
2Productivity
If additional vibration sources are added to improve degassing, then gas separation is enhanced, but device complexity and costs increase
Solution Approach 1:
The patent utilizes the existing pump in the cooling or heating system to generate vibrations that are transmitted to the liquid in the degassing vessel. The pump's operational vibrations are redirected to serve the degassing function, eliminating the need for additional dedicated vibration sources and reducing device complexity while maintaining effective gas separation
3Reliability
If reduced pressure vessels with spray nozzles are used, then gas solubility decreases and degassing is promoted, but processing time increases and maintenance requirements increase
Solution Approach 1:
The patent combines reduced pressure with mechanical vibration of the liquid to accelerate the degassing process. The vibration enhances gas bubble formation and detachment, allowing more effective gas separation to occur more rapidly within the reduced pressure environment, thereby reducing processing time while maintaining separation effectiveness
Solution Approach 2:
The patent employs periodic vibration cycles in the degassing vessel, where the liquid is subjected to rhythmic vibrational movements that continuously renew the liquid-gas interface. This periodic action prevents gas bubbles from adhering to surfaces and maintains high separation efficiency throughout the degassing process, reducing overall processing time
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 significantly improves degassing efficiency by separating gas particles from liquid molecules, preventing them from adhering to surfaces, and allows for continuous or periodic gas discharge, reducing processing time and costs compared to existing methods.
Implementation Method 1
the liquid is subjected to vibrations in said section, in particular to vibrations in combination with reduced pressure
Implementation Method 2
at the location where the liquid is made to vibrate, a relatively low pressure or reduced pressure prevails or is generated than prevails in the liquid upstream of said section
Implementation Method 3
utilizing a pump or vibrating element to generate frequencies between 40 to 125 Hz, which enhances gas separation from liquid molecules
Data Source
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AI summary
The invention relates to a method for degassing a liquid comprising a gas, such as water, in a cooling or heating system. Part of the liquid is conducted through a section of the cooling/heating system provided with venting means. Said section is provided with venting means. The liquid, which is present in said section, is subjected to vibrations. To this end, a vibrating element is used which is in contact with the liquid, in the reduced-pressure vessel. The invention furthermore relates to a degassing device. The degassing device comprises a section having a supply duct and a discharge duct for the liquid; venting means for discharging gas from the section; as well as vibrating means for subjecting the liquid present in the section to vibrations.