Internal CO2 Delivery Device for Pressure Disinfestation
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Solution Overview
Problem
The existing pressure disinfestation methods using CO2 are time-consuming for large packaging units and can result in incomplete treatment due to the slow diffusion of CO2 and the risk of compressed air pockets forming, which may protect pests from being effectively killed.
Innovation Solution
A supply device with an inert gas delivery area that can be placed inside the packaging unit, allowing direct introduction of pressurized CO2 through delivery openings, accelerating the CO2 concentration and ensuring uniform treatment by providing a direct path for the inert gas to reach the product, thereby shortening treatment cycles and ensuring effective pest elimination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If CO2 is supplied only from the outside into the packaging unit, then the treatment can be carried out with simple equipment, but the treatment time becomes excessively long and compressed air pockets may form
Solution Approach 1:
The gas supply system is segmented into two parts: external CO2 supply into the pressure chamber, and internal CO2 supply through the delivery device placed inside the packaging unit. This segmentation allows CO2 to reach the product from both outside and inside simultaneously, dramatically reducing treatment time while maintaining equipment simplicity
Solution Approach 2:
A delivery device acts as an intermediary between the external CO2 supply and the product inside the packaging unit. The delivery device includes a delivery area with delivery openings that direct CO2 flow directly onto the product, ensuring uniform saturation without forming compressed air pockets
2Device complexity
If CO2 is supplied only from the outside into the packaging unit, then the equipment remains simple, but the uniformity of CO2 distribution within the product deteriorates
Solution Approach 1:
The gas supply approach is segmented into external supply (pressure chamber) and internal supply (delivery device inside packaging). This dual-path segmentation ensures CO2 reaches all regions of the product uniformly, eliminating concentration gradients and air pockets while keeping equipment simple
Solution Approach 2:
The delivery device provides localized CO2 supply directly at the product location inside the packaging unit. The delivery area with multiple delivery openings creates locally high CO2 concentration zones that ensure uniform saturation throughout the product, improving manufacturing precision
3Quantity of substance
If the packaging unit is large and densely packed, then the storage efficiency is improved, but the CO2 penetration speed into the product decreases
Solution Approach 1:
The CO2 supply path is segmented into short external path (pressure chamber to packaging) and internal path (delivery device to product). This segmentation enables rapid CO2 penetration into densely packed products by delivering gas directly inside the packaging unit, maintaining high storage efficiency while improving penetration speed
Solution Approach 2:
The delivery device serves as an intermediary that bridges the gap between external CO2 supply and the densely packed product interior. It channels CO2 directly into the product mass, overcoming the slow diffusion limitation of dense packaging while maintaining storage capacity
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 reduces treatment time and ensures complete CO2 saturation within the packaging, effectively killing pests by combining acidification, outgassing, and deoxygenation effects, while minimizing the risk of air pockets.
Implementation Method 1
an inert gas supply ( 18), which supplies pressurized inert gas into the pressure chamber ( 11)
Implementation Method 2
The gas introduced into the bag diffuses from the outside into the filling material in the bag
Implementation Method 3
acidification of the body fluids through the formation of carbonic acid
Implementation Method 4
Depressurization and (3) deoxygenation by replacing the air atmosphere with a CO2 atmosphere
Implementation Method 5
deoxygenation by replacing the air atmosphere with a CO2 atmosphere
Data Source
Figure 1~3
Figure 4
Figure 5
AI summary
The invention relates to a supply device (1) for increasing the inert gas concentration in a product (16) located in a packaging unit (15) during pressure disinfection in a pressure chamber (11), wherein the supply device (1) comprises an inert gas supply (2) connected to an inert gas delivery area (7) which can be positioned within the packaging unit (15) and the product (16) contained therein during operation and thus allows inert gas supplied via the inert gas supply (2) to be directly supplied to the product (16) through at least one delivery opening (4), thereby increasing the inert gas concentration within the packaging unit (15) and/or accelerating the increase in the inert gas concentration. The invention further relates to a pressure disinfection arrangement (10) and a method for pressure disinfection.