Airpath Temperature Monitoring for Gas Conveyance Malfunctions
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Solution Overview
Problem
Printers using liquid electro-photographic (LEP) technology face the risk of ignition and explosion due to insufficient dilution or removal of carrier fluid vapor, which can occur if the airpath becomes blocked or system components malfunction, necessitating complex and expensive pressure and flow gauges for monitoring.
Innovation Solution
A system utilizing temperature sensors and a controller to identify gas conveyance malfunctions by comparing temperature readings to predetermined thresholds, enabling the detection of blockages or component failures in the airpath, and initiating recovery actions such as adjusting heating or suction to prevent hazardous conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure and flow gauges are used to monitor carrier fluid vapor removal, then safety monitoring capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces complex mechanical pressure and flow gauges with a temperature sensing system. The temperature sensor monitors the temperature of the airpath, and when the temperature exceeds a predetermined threshold, the controller shuts down the heater to prevent carrier fluid vapor ignition. This substitution of mechanical measurement systems with a thermal-based control system reduces device complexity while maintaining safety monitoring capability.
Solution Approach 2:
The patent changes the monitoring parameter from pressure and flow measurements to temperature measurement. By monitoring temperature as a proxy indicator of carrier fluid vapor accumulation, the system achieves safety monitoring without requiring complex pressure and flow gauge systems. The temperature parameter provides a simpler, more direct way to detect hazardous conditions.
2Reliability
If pressure and flow gauges are used to monitor carrier fluid vapor removal, then safety monitoring capability is improved, but system cost increases
Solution Approach 1:
The patent replaces expensive mechanical pressure and flow gauges with a temperature sensor and controller system. The temperature sensor is a simpler, less expensive component that can reliably detect hazardous conditions. The controller processes temperature signals and activates shutdown procedures, providing cost-effective safety monitoring without the high cost of mechanical measurement instruments.
Solution Approach 2:
The patent employs a temperature sensor that is simpler and less expensive than pressure or flow gauges. While the sensor may have limited lifespan, its low cost and simplicity make it an economical choice for safety monitoring. The system prioritizes cost-effective safety over long-lasting expensive instrumentation.
3Device complexity
If temperature sensors are used to detect gas conveyance malfunctions, then device complexity is reduced, but measurement precision may be affected
Solution Approach 1:
The patent changes the detection parameter from direct pressure or flow measurement to temperature measurement. Temperature serves as an indirect but reliable indicator of carrier fluid vapor accumulation and airpath blockages. By monitoring temperature changes in the airpath, the system achieves accurate malfunction detection without requiring complex measurement systems.
Solution Approach 2:
The patent uses temperature as an intermediary parameter to detect airpath malfunctions. Instead of directly measuring pressure or flow, the system monitors temperature changes that result from improper airpath function. This intermediary measurement approach simplifies the detection system while maintaining diagnostic accuracy through the thermal effects of carrier fluid vapor accumulation.
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 system provides a cost-effective and reliable method to detect and mitigate potential gas conveyance malfunctions, enhancing safety and system reliability in LEP printers by using simple and robust temperature sensors.
Implementation Method 1
A heat blower in fluid connection with the first channel is to heat the subject gas and cause the subject gas to move through the first channel towards the condenser
Implementation Method 2
a condenser in fluid connection with the first channel and positioned within a second channel
Implementation Method 3
A negative pressure component positioned in fluid connection with the second channel is to cause the subject gas to move through the second channel and through the condenser
Implementation Method 4
A set of temperature sensors is to take a set of temperature readings of the subject gas within, or adjacent to, an end opening of the first channel
Data Source
AI summary
In an example of the disclosure, a system for identification of gas conveyance malfunctions includes a channel situated to convey a subject gas, a condenser in fluid connection with the channel, and a heat blower positioned in fluid connection with the channel. The heat blower is to heat the subject gas, and to cause the subject gas to move through the channel towards the condenser. The system includes a temperature sensor situated to take a temperature reading of the subject gas within or adjacent the channel. The system includes a controller, operatively connected to the temperature sensor. The controller is to identify a malfunction event for the heat blower, the condenser, or the channel based upon a comparison of the temperature reading to a threshold temperature.