Dehumidifier Air Outlet Blockage Detection Using Evaporator Temperature
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Solution Overview
Problem
Prior art dehumidifiers fail to timely identify and address blockage abnormalities at the air outlet, leading to accelerated aging of components, potential safety hazards, and reduced reliability due to unchecked blockages.
Innovation Solution
A method and system that monitor air outlet blockages by detecting temperature variations in the evaporator pipe, initiating high wind-level operations or air deflector resets, and sending fault cues if issues persist, ensuring timely identification and resolution of blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no monitoring system is installed, then the device structure remains simple, but blockage abnormalities cannot be identified timely leading to accelerated component aging and reduced reliability
Solution Approach 1:
The patent replaces complex mechanical monitoring mechanisms with a temperature-based detection system. By monitoring the temperature difference between the evaporator pipe and environment, the system identifies blockages without requiring mechanical sensors at the air outlet, thus improving reliability while maintaining relatively simple device structure.
Solution Approach 2:
The patent uses the evaporator pipe temperature as an intermediary indicator to detect air outlet blockages. Instead of directly monitoring the air outlet condition, the system measures the temperature of the evaporator pipe, which changes in response to blockages, providing an indirect but effective detection method.
2Reliability
If high wind-level operation is initiated to eliminate blockage, then the blockage can be cleared, but energy consumption increases
Solution Approach 1:
The patent implements periodic high wind-level operations rather than continuous operation. The system monitors temperature continuously and only initiates high wind-level mode when blockage is detected, then switches back to normal operation after a set time period, eliminating blockages while minimizing energy consumption.
Solution Approach 2:
The patent changes the operating parameters (wind level) dynamically based on detected conditions. The system switches between normal and high wind-level operations, adjusting the fan speed parameter to match the actual operational needs, thus clearing blockages efficiently while conserving energy during normal operation.
3Reliability
If continuous monitoring is performed, then blockages are detected timely, but the system complexity and energy consumption increase
Solution Approach 1:
The patent implements periodic monitoring cycles rather than truly continuous monitoring. The system checks temperature at regular intervals and only triggers high wind-level operation or fault cues when specific conditions are met, reducing energy consumption while maintaining effective blockage detection capability.
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 effectively identifies and eliminates air outlet blockages, preventing operational disruptions, extending the dehumidifier's service life, and ensuring safety by automatically stopping the device and alerting users to severe issues.
Implementation Method 1
detecting environmental temperature and temperature of an evaporator pipe during running of the dehumidifier
Implementation Method 2
a variation tendency of the temperature of the evaporator pipe meets a preset condition
Implementation Method 3
calculating a difference between current environmental temperature and the temperature of the evaporator pipe
Data Source
AI summary
A method and a system for monitoring an abnormality at an air outlet of a dehumidifier. The method comprises: identifying whether there is a blockage abnormality at the air outlet of the dehumidifier; after a blockage abnormality has been identified, starting a high wind-level operation of the dehumidifier or controlling air deflectors of the dehumidifier to be reset; after the high wind-level operation has run for a set time period or after the air deflectors are reset, identifying whether the blockage abnormality has been eliminated; and after it has been identified that the blockage abnormality has not been eliminated, controlling the dehumidifier to stop running, and sending out a fault cue. The method and system disclosed can avoid influences on the operation, service life and reliability of the dehumidifier due to a long-term blockage at the air outlet of the dehumidifier.