Vacuum Sealer Proximity Sensor Eliminates Mechanical Flag Wrinkles
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Solution Overview
Problem
Mechanical flag systems in vacuum packaging appliances are prone to causing wrinkles in container material, leading to false detections and are mechanically complex and expensive.
Innovation Solution
A proximity sensor mechanism is used to detect container material within a transparent vacuum chamber, communicating signals to an electronic circuit to trigger operations such as clamping, vacuuming, cutting, or heat sealing without physical contact, and can detect material levels to control automatic dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical flag systems are used to detect container material, then detection function is achieved, but container material wrinkles and false detections occur
Solution Approach 1:
The patent replaces the mechanical flag system with an optical sensor system. The optical sensor detects the presence and position of container material through optical means (light reflection, transmission, or absorption) without any mechanical contact. This substitution eliminates the wrinkle-causing mechanical interaction while maintaining reliable detection functionality, directly resolving the contradiction between detection reliability and prevention of container material damage.
2Reliability
If mechanical flag systems are used to detect container material, then detection function is achieved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical flag systems with simpler optical sensor systems. Optical sensors consist of light sources (LEDs or lasers) and detectors arranged to detect container material presence through optical fields. This substitution dramatically reduces mechanical complexity, eliminates moving parts, and lowers maintenance requirements while maintaining reliable detection functionality.
Solution Approach 2:
The patent introduces optical fields as intermediaries between the detection system and container material. Instead of direct mechanical contact, the optical field serves as a mediator that carries information about container material presence and position back to the sensor system. This intermediary approach simplifies the overall system architecture by eliminating complex mechanical linkages and flag mechanisms.
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
Eliminates false detections and reduces complexity and cost by avoiding mechanical contact, ensuring accurate detection and efficient operation of vacuum packaging processes.
Implementation Method 1
a detector configured to detect the light reflected from the container material disposed in the VPA
Data Source
AI summary
Systems (200) and methods (800) for causing certain operations to be performed by a Vacuum Packaging Appliance (“VPA”). The methods comprising: detecting when container material is at least partially disposed within a transparent vacuum chamber of the VPA using a proximity sensor mechanism; communicating a signal from the proximity sensor mechanism to an electronic circuit of the VPA in response to the detection of the container material within the vacuum chamber; and triggering a performance of a first operation by the VPA in response to the reception of the signal by the electronic circuit. The first operation is selected from the group comprising mechanical clamping operations to clamp the container material in position, vacuum operations to extract fluid from within a container defined by the container material, and heat sealing operations to create a heat seal along an open end of the container.