Duct-type air conditioning system, and control method and device for indoor ventilator thereof
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Solution Overview
Problem
Standard wire controllers in air conditioners cannot transmit set and ambient temperatures to the indoor unit, limiting the air conditioner's ability to automatically adjust air volume, resulting in poor comfort, dehumidification, and energy conservation performance.
Innovation Solution
A method and device for controlling the indoor fan of a duct-type air conditioning system that calculates and adjusts wind speed based on temperature differences between recorded and real-time temperature values, allowing the indoor unit to automatically control air volume without receiving set and ambient temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a standard wire controller is used to control the air conditioner, then the system can be operated with simple control wiring, but the indoor unit cannot obtain set temperature and ambient temperature parameters, resulting in poor automatic air volume adjustment performance
Solution Approach 1:
The patent introduces an intermediary solution where the indoor unit independently calculates the set temperature based on recorded ambient temperature data and temperature difference relationships, without requiring direct transmission of set temperature parameters from the wire controller. This mediator approach (the calculation mechanism) enables automatic air volume adjustment while maintaining simple control wiring.
2Device complexity
If the indoor unit cannot receive set temperature and ambient temperature parameters, then the control system remains simple, but the dehumidification performance and comfort performance are poor
Solution Approach 1:
The indoor unit performs self-service by independently obtaining ambient temperature through its own temperature sensor and calculating the set temperature using recorded data and temperature difference relationships. This self-service capability enables the unit to automatically adjust air volume for proper dehumidification without adding complex control system infrastructure.
3Quantity of substance
If the indoor unit cannot obtain temperature parameters for automatic adjustment, then the system operates with fewer data requirements, but energy conservation performance is poor
Solution Approach 1:
The system performs preliminary action by recording ambient temperature data before shutdown and establishing temperature difference relationships in advance. This preliminary data collection and relationship establishment enables the indoor unit to calculate set temperature and optimize energy consumption during subsequent operations without requiring continuous real-time data transmission.
Data Source
AI summary
A duct-type air conditioning system, a control method and a device for an indoor ventilator thereof. The control method comprises the following steps: upon turning on the duct-type air conditioning system, acquiring an indoor temperature and a set temperature recorded the last time the duct-type air conditioning system was turned off, and acquiring a present set temperature (S1) according to the indoor temperature and the set temperature recorded the last time the system was turned off; detecting a real-time indoor temperature, according to the present indoor temperature and the present set temperature, calculating a temperature difference between the present indoor temperature and the set temperature, and generating an air velocity adjustment instruction according to the temperature difference, controlling, according to the air velocity adjustment instruction, the indoor ventilator to adjust the air supply velocity (S4) of an indoor unit.