Partial Vacuum Drying System for Cannabis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for drying cannabis are inefficient, leading to inconsistent results, degradation of cannabinoids, and potential loss of potency due to high heat and uneven drying processes, with a lack of control over drying time and rate in industrial applications.
Innovation Solution
A partial vacuum drying system that maintains a predetermined air exchange rate and pressure to quickly remove water vapor, using a chamber with adjustable openings and a control system to regulate temperature and humidity, ensuring consistent and efficient drying without overheating or over-drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high heat and fast drying methods are used, then drying speed is improved, but cannabinoid degradation and loss of potency occur
Solution Approach 1:
The patent applies parameter changes by transitioning from high-heat atmospheric drying to low-heat vacuum drying. The system reduces ambient pressure to lower the boiling point of water, enabling moisture removal at temperatures below 100°C. This parameter change (pressure reduction) allows fast drying speeds while preventing thermal degradation of cannabinoids and terpenes.
Solution Approach 2:
The patent utilizes phase transitions by controlling the evaporation of water from liquid to vapor phase under reduced pressure. The vacuum environment facilitates rapid phase transition at lower temperatures, and the system manages the vapor phase removal through controlled venting, achieving fast drying without high-heat damage.
2Productivity
If dehumidifiers are run at full strength continuously, then drying efficiency is improved, but energy consumption increases and material consistency deteriorates
Solution Approach 1:
The patent implements periodic action through a control system that cycles the vacuum pump operation. Rather than continuous full-strength dehumidification, the system periodically activates the vacuum pump to maintain target pressure levels, then allows passive drying phases. This periodic operation maintains high drying efficiency while significantly reducing energy consumption compared to continuous operation.
Solution Approach 2:
The patent applies feedback control by using pressure sensors to monitor chamber pressure and automatically adjusting vacuum pump operation accordingly. The control system receives feedback from pressure measurements and modulates pump runtime to maintain optimal drying conditions, preventing both energy waste from over-drying and inconsistency from under-drying.
3Ease of operation
If screen drying is used, then labor intensity is reduced, but drying uniformity worsens due to size variations
Solution Approach 1:
The patent applies universality by creating a vacuum drying environment that uniformly affects all plant materials regardless of size or shape. The reduced pressure environment enables moisture removal from all buds simultaneously at consistent rates, making the process universally effective for different bud sizes without requiring manual intervention or complex positioning arrangements.
4Productivity
If vacuum pressure is reduced too much, then drying speed is improved, but volatile oil loss increases
Solution Approach 1:
The patent implements dynamics by continuously adjusting vacuum pressure levels during the drying process. The system starts at higher pressures to preserve volatiles during initial drying phases, then progressively reduces pressure to increase drying speed as moisture content decreases. This dynamic pressure adjustment optimizes both drying speed and volatile retention throughout the drying cycle.
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 method allows for rapid and consistent drying of cannabis, preventing degradation and maintaining potency, while reducing energy consumption and labor, achieving faster drying times without damaging cannabinoids or terpenes.
Implementation Method 1
reducing air pressure in the container to a predetermined level
Implementation Method 2
quickly remove water vapor
Implementation Method 3
heating air in the container to a predetermined temperature
Implementation Method 4
predetermined exchange rate of air through the container
Data Source
AI summary
A material drying system provides for consistent and efficient drying of organic materials, such as cannabis. In certain embodiments, a partial vacuum drying system is used to dry the materials and includes a container, a heating system, a depressurization system, and a control system. Air in the container is heated to within a range of temperatures and a low vacuum is applied to assist with evaporation. In addition, the volume flow rate of air pulled out of the container is monitored and maintained at a predetermined rate, which pulls moisture away from the materials so as to prevent degradation of the materials during the drying process while also reducing drying time. A relatively high air volume flow rate is maintained at low pressure by adjusting the area of an opening in the chamber.