HVAC Orientation Sensor Control for Accurate Temperature Monitoring
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Solution Overview
Problem
Existing HVAC devices face challenges in accurately monitoring temperature due to the inability of bi-metallic switches to account for device orientation, leading to inefficient testing processes and potential performance issues such as premature switch trips and temperature limit exceedance.
Innovation Solution
A control system that combines temperature sensors and orientation sensors, such as gyroscopes or accelerometers, to determine the operating thermal control set points based on the device's orientation, allowing for precise temperature monitoring and adjustment of HVAC device operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If bi-metallic switches are used for temperature monitoring, then cost effectiveness is improved, but measurement precision deteriorates due to inability to account for orientation
Solution Approach 1:
The patent combines a bi-metallic switch with an orientation sensor (accelerometer or gyroscope) into an integrated temperature monitoring system. The orientation sensor detects the device's installation orientation and provides this information to the control circuitry, which then adjusts the temperature set point accordingly. This merging allows the system to maintain cost effectiveness while achieving orientation-aware temperature monitoring accuracy.
Solution Approach 2:
The system dynamically changes the temperature set point parameter based on the detected orientation. The control circuitry receives orientation data and automatically adjusts the temperature threshold at which the bi-metallic switch triggers, ensuring accurate temperature monitoring regardless of device installation position. This parameter adaptation resolves the precision issue without requiring expensive alternative sensors.
2Reliability
If extensive testing is conducted to identify appropriate bi-metallic switches for all orientations, then reliability is improved, but loss of time increases during design and commissioning
Solution Approach 1:
The system performs self-configuration by automatically detecting its installation orientation through the orientation sensor and adjusting its operating parameters accordingly. This eliminates the need for manual testing and configuration by service technicians, as the device autonomously adapts to its installation position. The self-service capability ensures reliability across all orientations while dramatically reducing commissioning time.
Solution Approach 2:
The orientation sensor continuously monitors device orientation in real-time, allowing the system to proactively adjust temperature set points before temperature issues arise. This preliminary detection and adjustment mechanism eliminates the need for extensive post-installation testing and troubleshooting, ensuring reliable operation from the moment of installation regardless of orientation.
3Adaptability or versatility
If multiple temperature switches are provided for different orientations, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal temperature monitoring system where a single bi-metallic switch works across all orientations when combined with an orientation sensor. The control circuitry universally applies orientation-based set point adjustments, eliminating the need for multiple specialized switches or complex configuration tables. This multi-functional approach achieves full orientation adaptability while simplifying the device architecture.
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 solution enhances the efficiency of design, manufacturing, and commissioning processes, improves device performance, and provides enhanced internal diagnostics, ensuring accurate temperature control across various orientations and reducing the risk of performance issues.
Implementation Method 1
an orientation sensor that provides a signal indicative of an operating orientation of the HVAC device
Implementation Method 2
an orientation sensor that provides a signal indicative of an operating orientation of the HVAC device
Implementation Method 3
a temperature sensor that provides a signal indicative of a temperature associated with the HVAC device
Data Source
AI summary
Example embodiments of the present disclosure relate to a control system for controlling an HVAC device where the control system includes a temperature sensor that provides a signal indicative of a temperature associated with the HVAC device, an orientation sensor that provides a signal indicative of an operating orientation of the HVAC device, and control circuitry that receives the temperature signal and the orientation signal from the orientation sensor. The control circuitry selects an operating thermal control set point from a plurality of stored thermal control set points based at least in part on an orientation signal, determines a temperature sensor input based on the temperature signal and compares the temperature sensor input to the operating thermal control set point, and operates the HVAC device based at least in part on that comparison.