Multi-Room Airflow Mixing With DC Blowers for Uniform Temperature
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Solution Overview
Problem
Conventional air conditioning systems face challenges in uniformly maintaining room temperatures across multiple rooms while saving energy, particularly in coping with variations in solar radiation and resident occupancy, and in adjusting temperatures according to individual preferences.
Innovation Solution
The system employs a return compartment adjacent to multiple rooms with air blowers powered by DC motors, where the total blast volume of blowers is greater than the conditioned air volume, allowing for efficient mixing of discharged and conditioned air to achieve uniform temperature, and adjusts the number of motor rotations based on solar radiation and occupancy to optimize air conditioning load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a conventional air conditioning system uses a single air conditioning section to condition air for multiple rooms, then energy consumption is reduced, but the ability to adjust temperatures according to individual room preferences is lost
Solution Approach 1:
The system divides the air conditioning control into two segments: a central air conditioning section that conditions air for the entire housing to save energy, and individual DC motor-driven blowing sections in each room that can independently adjust air volume to satisfy individual temperature preferences. This segmentation allows both energy efficiency and individual adaptability.
Solution Approach 2:
The system introduces dynamic control through DC motors in each room's blowing section, allowing real-time adjustment of air volume based on individual preferences and changing conditions (such as solar radiation or occupancy). This dynamic capability enables temperature adaptation without requiring separate air conditioning sections for each room.
2Reliability
If the air conditioning system increases air volume to quickly reach set temperature, then temperature uniformity improves, but energy consumption increases
Solution Approach 1:
The system changes the parameter of motor rotation speed dynamically. DC motors in each room's blowing section can adjust rotation speed to optimize air volume delivery. By controlling motor speed rather than always operating at maximum capacity, the system achieves temperature uniformity while minimizing energy consumption through efficient parameter optimization.
3Reliability
If the system uses a large total blast volume from multiple blowers, then temperature uniformity across rooms is achieved, but the complexity of controlling individual room temperatures increases
Solution Approach 1:
The system replaces complex mechanical control mechanisms with electronic DC motor control. Each room's blowing section uses a DC motor that can be independently controlled via electrical signals, simplifying the control architecture while achieving individual temperature adjustment. This substitution of mechanical control with electronic control reduces overall system complexity despite having multiple adjustable components.
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 approach enables the air conditioning system to maintain comfortable, uniform room temperatures quickly and reliably while minimizing energy consumption, effectively addressing temperature variations and individual preferences.
Implementation Method 1
a plurality of blowing sections (40, 41) having a DC motor (65)
Implementation Method 2
at least one air conditioning section are placed in the return compartment
Data Source
AI summary
In an air conditioning system, a return compartment which is adjacent to a plurality of rooms 13, 14, 15 is formed in a building 1, the respective rooms 13, 14, 15 are provided with air intake sections 18a, 18b, 18c, 18d which spout air sent from a blowing section 40a, 40b, 40c 40d having a DC motor, an exhaust section 52 which forms exhausting current directed from the respective rooms 13, 14, 15 toward the return compartment is provided between the respective rooms 13, 14, 15 and the return compartment, the plurality of blowing sections 40a, 40b, 40c 40d and at least one air conditioning section 30a are placed in the return compartment, a total blast volume of the plurality of blowing sections 40a, 40b, 40c 40d is greater than a conditioned air volume of the air conditioning section 30a, and a blast volume of the blowing section 40a, 40b, 40c 40d is adjusted by an air conditioning load of the room 13, 14, 15. According to this, it is possible to provide the air conditioning system 29 having a relatively simple configuration, capable of changing temperature in the respective rooms 13, 14, 15 and coping with load variation caused by solar radiation if necessary, while comfortably and uniformly keeping temperature of the entire house with saved energy.