HVAC Malfunction Lighting System for Rapid Component Identification
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Solution Overview
Problem
Conventional cooling and heating systems often fail to detect malfunctions in components due to obstructed lights, leading to delayed identification and resolution of issues, which can result in hot or cold spaces and merchandise spoilage.
Innovation Solution
An HVAC system with multiple lights coupled to various components, including a high side heat exchanger and loads, where a controller activates all lights upon detecting a malfunction, with the malfunctioning component's lights flashing or changing color to ensure visibility and quick identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cooling and heating systems use lights to indicate malfunctions, then malfunction detection is possible, but the lights may be obstructed leading to delayed identification
Solution Approach 1:
The patent merges multiple light indicators across different system components (heat exchanger, first load, second load) into a unified malfunction indication system. When any component malfunctions, all lights are activated simultaneously, ensuring the malfunction is visible regardless of obstruction of any single light. This combining approach resolves the contradiction by making the indication system as a whole reliable even when individual lights are blocked.
2Ease of operation
If multiple lights are activated upon malfunction detection, then visibility of malfunction is improved, but the complexity of the lighting system increases
Solution Approach 1:
The lighting system is segmented into distinct controllable units associated with different system components (heat exchanger light, first load light, second load light). Each light can be independently controlled by the controller based on which component has malfunctioned. This segmentation allows the system to activate only the necessary lights rather than all lights simultaneously, reducing overall complexity while maintaining ease of malfunction identification.
Solution Approach 2:
The lighting system implements dynamic control where the activation pattern of lights changes based on the specific malfunction condition. The controller dynamically determines which lights to activate and their activation patterns (continuous vs. flashing) based on real-time system status. This dynamic behavior allows a relatively simple lighting infrastructure to provide complex diagnostic information, resolving the contradiction between ease of operation and device complexity.
3Loss of time
If differential lighting patterns are used to identify the malfunctioning component, then quick identification is achieved, but the control system becomes more complex
Solution Approach 1:
The patent implements periodic action through flashing light patterns to indicate the malfunctioning component. When a specific component malfunctions, its associated light flashes while other lights remain continuously illuminated or are off. This periodic flashing provides an immediate visual distinction that enables rapid identification of the malfunctioning component. The control logic for implementing flashing patterns is relatively simple compared to more complex identification methods, thus resolving the contradiction between quick identification and control system complexity.
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
Enables rapid detection and resolution of malfunctions, preventing temperature-related issues and spoilage by ensuring malfunctioning components are easily identified even when obstructed, through the activation of all lights and differential lighting patterns.
Implementation Method 1
The high side heat exchanger removes heat from the refrigerant
Implementation Method 2
The first load uses the refrigerant to cool a space proximate the first load. The second load uses the refrigerant to cool a space proximate the second load
Data Source
AI summary
An apparatus includes a high side heat exchanger, a first load, a second load, a first plurality of lights, a second plurality of lights, a third plurality of lights, and a controller. The high side heat exchanger removes heat from a refrigerant. The first load uses the refrigerant to cool a space proximate the first load. The second load uses the refrigerant to cool a space proximate the second load. The first plurality of lights is coupled to the high side heat exchanger. The second plurality of lights is coupled to the first load. The third plurality of lights is coupled to the second load. The controller receives an indication of a detected malfunction in at least one of the high side heat exchanger, the first load, the second load, and in response to the indication, activates the first, second, and third plurality of lights.