Centralized automatic control system capable of remotely controlling viable air volume diffuser of thermal driving method
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional air diffusers in large buildings lack remote control capabilities, making it difficult for users to arbitrarily control room temperature, especially in situations requiring external temperature adjustments.
Innovation Solution
A centralized automatic control system that includes a master diffuser with a room temperature sensing unit, a supply air temperature sensing unit, a hot-wire unit, a controller, and a remote control unit, allowing for remote input of set temperatures and adjustment of air ventilation volume through low heat generation and piston movement to match the temperature difference, enabling remote control of air diffusers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a temperature sensor and damper are installed in the air diffuser to enable automatic temperature control, then the room temperature can be controlled by adjusting air volume, but the user cannot arbitrarily control the room temperature or control it remotely
Solution Approach 1:
A remote control unit is introduced as an intermediary device that allows users to control the air diffuser temperature remotely. The remote control unit communicates with the air diffuser's control unit, enabling users to set desired temperatures without being physically present at the device. This resolves the contradiction by providing user control capability while keeping the air diffuser's internal structure relatively simple.
Solution Approach 2:
The control system is segmented into separate functional units: a remote control unit for user interaction and a control unit within the air diffuser for execution. This segmentation allows the user control function to be separated from the air handling mechanism, enabling remote operation without complicating the core air diffuser structure.
2Adaptability or versatility
If electric power supply and air pressure switch are added to each diffuser for independent control, then remote control becomes possible, but the device complexity increases
Solution Approach 1:
The control unit within the air diffuser is designed to perform multiple functions: receiving remote control signals, processing temperature control algorithms, and actuating the damper. By making the control unit multi-functional, the patent reduces the need for separate dedicated components for each function, thereby achieving remote control capability without proportionally increasing device complexity.
3Extent of automation
If the temperature sensor operates automatically according to room temperature changes, then temperature control is achieved, but the user cannot arbitrarily set desired temperatures
Solution Approach 1:
The system employs feedback control where the temperature sensor continuously monitors the room temperature and feeds this information back to the control unit. The control unit compares the measured temperature with the user-desired temperature and automatically adjusts the damper position to maintain the setpoint. This feedback mechanism enables both automatic operation and user control freedom, as users can set desired temperatures and the system automatically maintains them.
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 the creation of a desired indoor air conditioning environment by remotely adjusting air ventilation volume to match the set temperature, improving user control over room temperature conditions.
Implementation Method 1
supplying power to the hot-wire unit to generate low heat corresponding to the needed heat value
Implementation Method 2
varying a distance of reciprocating movement of the piston connected to the hot-wire unit
Data Source
AI summary
A centralized automatic control system includes a master diffuser including a sensor box unit and a controller provided with a hot-wire unit to which power is supplied, a piston connected to the hot-wire unit, a supply air damper connected to the piston, and a discharge port connected to the supply air damper to be opened and closed; a remote control unit included in a building automation system (BAS) and installed with control software to monitor room temperature sensed by the master diffuser and supply air temperature of supply air supplied into a room and input a preset temperature into the master diffuser; and a second diffuser installed with a terminal box unit and operating in subordination to the master diffuser.