Vacuum Sealer Valve Timing for Liquid Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vacuum sealers face challenges when sealing bags containing wet or moist items, as the liquid can be pulled into the vacuum chamber, causing a mess and potentially damaging the vacuum pump.
Innovation Solution
A vacuum sealer with a solenoid valve that releases the vacuum in the chamber before complete sealing, preventing liquid from being drawn in, and a controller that operates the valve to manage the sealing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vacuum pumping continues until complete sealing, then sealing effectiveness is improved, but liquid is drawn into the vacuum chamber causing mess and potential pump damage
Solution Approach 1:
The valve is opened before the sealing process is complete to prevent liquid from being drawn into the vacuum chamber. This preliminary action of releasing vacuum pressure stops the harmful liquid flow while the sealing mechanism finishes its work, resolving the contradiction between achieving effective sealing and preventing contamination.
Solution Approach 2:
The valve is used to extract or remove the vacuum condition from the chamber at the critical moment when liquid contamination risk arises. By taking out the vacuum pressure before sealing completes, the system prevents liquid from being pulled into the chamber while maintaining the sealing effectiveness already achieved.
2Manufacturing precision
If vacuum pressure is maintained throughout sealing, then sealing quality is improved, but liquid interferes with the sealing surface preventing proper seal
Solution Approach 1:
The valve opens preliminarily during the sealing process to eliminate vacuum pressure that would otherwise draw liquid onto the sealing surface. This timing ensures that liquid interference is prevented while the sealing mechanism completes its precise sealing action, maintaining high sealing quality without contamination.
Solution Approach 2:
The valve provides preliminary anti-action by counteracting the vacuum pressure that causes liquid interference. By introducing atmospheric pressure through the valve before liquid can reach the sealing surface, the system prevents the harmful effect while allowing the sealing process to complete with high precision.
3Productivity
If vacuum pumping continues to completion, then air removal from bag is improved, but liquid is drawn into the vacuum pump causing damage
Solution Approach 1:
The valve opens preliminarily to release vacuum pressure before the pumping process is fully complete. This allows the majority of air to be removed from the bag for efficient vacuum sealing, while the timely release of vacuum prevents liquid from being drawn into the pump, thus protecting the pump from damage.
Solution Approach 2:
The valve extracts or removes the vacuum condition from the chamber at the optimal moment during the pumping process. This allows efficient air removal to occur while preventing the harmful effect of liquid ingestion by taking out the vacuum pressure that would otherwise draw liquid into the pump.
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
Prevents liquid from entering the vacuum chamber during sealing, maintaining a clean environment and protecting the vacuum pump, ensuring a proper seal without liquid interference.
Implementation Method 1
a vacuum chamber and a vacuum pump for pumping air out of the open end of a bag
Implementation Method 2
an elongated heat sealing bar to seal the open end once the air has been pumped out of the bag
Implementation Method 3
opening a valve in the vacuum chamber to release a vacuum in the vacuum chamber
Data Source
AI summary
A vacuum sealer includes: a housing comprising a vacuum chamber therein; a vacuum pump in fluid communication with the vacuum chamber; a sealing mechanism adjacent a periphery of the vacuum chamber; a valve positioned and configured to releasably seal the vacuum chamber, the valve movable between a first position, in which the valve forms a seal with the sealing chamber, and a second position, in which the valve does not form a seal with the sealing chamber; and a controller operatively connected with the vacuum pump, the sealing mechanism, and the valve. The controller is configured to move the valve from the first position to the second position during sealing.