A/C Service Gauge Display for Fast Pressure Change Recognition
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Solution Overview
Problem
Current air-conditioning system service devices require experienced technicians for efficient maintenance due to the complexity of configuring and adjusting settings, as they rely heavily on manual pressure and temperature measurements without intuitive display methods.
Innovation Solution
A service device with an electronically controllable display and internal pressure sensors that provides both analog and digital representations of pressure and temperature values, allowing for real-time monitoring and easier adjustment of system settings, facilitating quicker and more precise maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If digital display with numerical values is used, then measurement precision is improved, but ease of operation deteriorates due to difficulty in recognizing rapid changes
Solution Approach 1:
The display is segmented into two distinct representation modes: digital numerical display for precise measurement values and analog graphical display (needle gauge) for intuitive visualization of rapid changes. This segmentation allows each display type to excel at its strengths without compromise
Solution Approach 2:
The patent transitions from one-dimensional numerical display to two-dimensional analog graphical display with needle movement across a scale. This dimensional change provides visual intensity and spatial movement that makes rapid changes immediately apparent to human operators
2Ease of operation
If analog display is used, then ease of operation is improved for recognizing changes, but measurement precision deteriorates compared to digital display
Solution Approach 1:
The patent merges digital and analog display technologies into a single integrated display system. Both display types show pressure values simultaneously, combining the precision of digital readout with the intuitive visual feedback of analog needle movement, thereby eliminating the trade-off between the two approaches
3Device complexity
If manual pressure and temperature measurements are used, then device complexity is reduced, but productivity deteriorates due to time-consuming configuration and adjustment
Solution Approach 1:
The service device automatically performs measurements, calculations, and optimizations without requiring manual intervention for each parameter adjustment. The system self-calibrates and provides real-time feedback, eliminating the need for technicians to manually configure and adjust numerous parameters, thereby significantly improving maintenance efficiency while keeping the device relatively simple
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 device enables technicians to recognize rapid changes in pressure and temperature values more intuitively with analog displays, improving maintenance efficiency and precision, allowing for faster system optimization and reduced risk of errors.
Implementation Method 1
two internal pressure sensors which can detect the pressure in the high-pressure part and the low-pressure part
Implementation Method 2
The refrigerant is expanded on the valve and absorbs heat when vaporization takes place in a heat exchanger in the low-pressure part (LP) of the system, thus cooling a medium contained therein
Implementation Method 3
The gaseous refrigerant is compressed and condensed by the pump while releasing heat in a heat exchanger in the high-pressure part (HP) of the system
Data Source
AI summary
A service or maintenance device is provided by which the maintenance work to be done on air-conditioning systems is made easier. An internal measuring system for the evaluation and display of measured data may have a display control means configured to optionally show measured values in a dynamic analog scale type in parallel to a numerical value, and to allow a comparison with a set memory marking.