Freeze-drying Sound Generator Integration for Vacuum Chamber Drying
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Solution Overview
Problem
Existing freeze-drying systems face challenges in efficiently removing liquid from products, especially those with a powder-like consistency, as they require milling or grinding, and the use of ultrasound is limited to pre-drying phases, not effectively aiding the drying process within the vacuum chamber.
Innovation Solution
Integrating a sound generator within the vacuum chamber's reception apparatus to directly apply ultrasound during the drying phase, allowing for accelerated drying and simplifying the system setup by eliminating the need for an intermediate condenser chamber and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ultrasound is applied only in pre-drying phases outside the vacuum chamber, then the system setup is simpler, but the drying process is not effectively accelerated during the actual drying phase
Solution Approach 1:
The sound generator is integrated directly into the reception apparatus within the vacuum chamber, merging the ultrasound function with the drying chamber. This allows ultrasound to be applied during the actual drying phase without requiring separate pre-drying equipment, thereby accelerating the drying process while maintaining a compact system design.
Solution Approach 2:
The reception apparatus serves as an intermediary structure that houses both the product and the sound generator. This integration allows the sound waves to directly作用于 the product during drying without requiring complex external coupling mechanisms, effectively accelerating sublimation while keeping the system setup relatively simple.
2Loss of energy
If a separate condenser chamber is used, then the condensation process is isolated, but the system complexity increases and energy consumption rises
Solution Approach 1:
The condenser is integrated into the same vacuum chamber as the reception apparatus, eliminating the need for a separate condenser chamber. This merging of functions reduces the number of components, simplifies the system structure, and decreases energy consumption by eliminating the need to maintain vacuum in multiple separate chambers.
Solution Approach 2:
The vacuum chamber serves multiple functions: it houses both the reception apparatus with the sound generator for drying and the condenser for vapor condensation. This multi-functionality reduces system complexity and energy consumption by eliminating the need for separate dedicated chambers for each function.
3Productivity
If traditional freeze-drying without ultrasound is used, then the system is simpler, but liquid removal from powder-like products is inefficient
Solution Approach 1:
The sound generator produces ultrasonic vibrations that directly作用于 the product during drying. This mechanical vibration accelerates the removal of liquid from powder-like products by enhancing sublimation rates and preventing product adhesion to the reception apparatus, thereby improving productivity without requiring complex pre-processing steps.
Solution Approach 2:
The introduction of ultrasound changes the physical parameters of the drying process by adding vibrational energy. This parameter change significantly improves liquid removal efficiency from powder-like products without requiring changes to the product preparation process, maintaining ease of manufacture while enhancing productivity.
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 direct application of ultrasound within the vacuum chamber significantly accelerates the drying process, reducing energy requirements and enabling efficient sublimation without thermal conduction, while simplifying the system design by integrating the condenser and reception apparatus into a single space.
Implementation Method 1
at least one sound generator for treating the product with sound during the drying phase is arranged at the reception device
Implementation Method 2
The solvent, and thus frozen liquid, in this process changes directly and without any prior transition into the liquid phase from the frozen state into the gaseous state, which is called sublimation
Implementation Method 3
a coolable condenser is present at which liquid withdrawn from the product in a drying phase can be precipitated from a vapor phase
Data Source
AI summary
The invention relates to a freeze-drying system for drying products containing liquid and to a method for operating a freeze-drying system, said freeze-drying system having a vacuum chamber, in which at least one holding device for holding the products containing liquid is inserted, a coolable condenser being provided, on which liquid drawn from the product in a drying phase can be condensed from a vapor phase. According to the invention, at least one sound generator is arranged on the holding device, by means of which sound generator sound can be applied to the product during the drying phase.