Ventilation control device and ventilation system
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Solution Overview
Problem
Conventional ventilation systems often set exhaust or air supply volumes in an unbalanced manner, leading to wasteful energy consumption due to differences in device capacities, with large volumes being preferentially assigned to some devices.
Innovation Solution
A ventilation control device that communicatively connects to multiple exhaust and air supply devices, reads total and maximum capacities, and distributes air volumes accordingly to ensure balanced operation, using a total exhaust air volume reader, specification reader, distributor, and instructor to set appropriate volumes for each device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If exhaust air volume or air supply volume is individually set to each exhaust device or air supply device in conventional ventilation systems, then ventilation can be performed with the required ventilation air volume for the building, but the exhaust air volume or air supply volume is not necessarily set in a balanced manner according to the capacity of each device, leading to wasteful energy consumption
Solution Approach 1:
The system automatically adjusts the exhaust air volume parameter for each exhaust device based on the device's maximum exhaust air volume capacity. The control device reads the total exhaust air volume requirement and redistributes it among devices according to their actual capacities, changing the operating parameters to achieve balanced operation and energy efficiency
Solution Approach 2:
The control device reads the maximum exhaust air volume specification from each exhaust device and uses this feedback information to automatically calculate and set appropriate exhaust air volumes. This closed-loop approach ensures that the total required ventilation air volume is achieved while preventing energy waste from unbalanced operation
2Productivity
If large exhaust air volume or air supply volume is preferentially set to some exhaust devices or air supply devices, then the total ventilation air volume requirement can be met, but this preferential setting leads to wasteful energy consumption
Solution Approach 1:
The control device automatically changes the exhaust air volume parameters from preferential allocation to capacity-based allocation. By reading the maximum exhaust air volume of each device and recalculating the distribution, the system ensures that devices operate within their optimal capacity ranges, preventing energy waste while meeting the total ventilation requirement
Solution Approach 2:
The system enables exhaust devices to operate at their optimal capacity levels by automatically setting their exhaust air volumes based on their own maximum capacity specifications. Each device serves itself by operating at the appropriate volume determined by the control device, eliminating the need for manual preferential allocation and reducing energy consumption
Data Source
AI summary
A ventilation control device (2) includes a total exhaust air volume reader (16), an exhaust device specification reader (17), an exhaust air volume distributor (18), and an exhaust air volume instructor (19). The total exhaust air volume reader (16) reads the total exhaust air volume set to a building. The exhaust device specification reader (17) reads a maximum exhaust air volume of each of exhaust devices (3) as a specification of the exhaust device (3). The exhaust air volume distributor (18) sets the exhaust air volume of each exhaust device (3) by distributing the exhaust air volume read by the total exhaust air volume reader (16) according to the maximum exhaust air volume of the exhaust device (3) read by the exhaust device specification reader (17). The exhaust air volume instructor (19) instructs, to each exhaust device (3), the exhaust air volume set by the exhaust air volume distributor (18).