Control electronics for multiple electric filters
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Solution Overview
Problem
Existing control electronics for building ventilation systems do not efficiently manage and maintain large numbers of electrostatic precipitators, particularly in terms of simple installation and maintenance, including the replacement of defective parts.
Innovation Solution
A control electronics system comprising a master device and node devices, where each node device is connected in series, with unique slot numbers and sensors for coding determination, and galvanic isolators for voltage transmission, allowing for centralized control of ionization and collector stages of electrostatic precipitators, adaptable to different sizes and air volume flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large number of electrostatic precipitators are controlled using traditional control electronics, then the system can filter particles effectively, but the complexity of control and maintenance increases significantly
Solution Approach 1:
The control system is divided into a master control unit and multiple slave control units, each responsible for specific precipitator modules. This segmentation allows independent control and maintenance of individual modules without affecting the entire system, reducing overall control complexity while maintaining filtering effectiveness.
Solution Approach 2:
The patent introduces a hierarchical control structure with master and slave levels, adding a dimensional layer to the control architecture. This hierarchical arrangement simplifies the control of multiple precipitators by organizing them into manageable groups under slave units, which are in turn managed by master units.
2Reliability
If traditional control electronics are used for multiple electrostatic precipitators, then particle filtration is achieved, but installation and maintenance become difficult
Solution Approach 1:
Each slave control unit is designed as a modular component that can be independently installed and maintained. The modular architecture allows technicians to access and service individual slave units without dismantling the entire control system, significantly improving ease of operation and maintenance while maintaining filtration performance.
Solution Approach 2:
The slave control units act as intermediaries between the master controller and the electrostatic precipitator modules. This intermediary layer simplifies installation by providing standardized interfaces and reduces maintenance complexity by isolating potential failure points to individual slave units that can be quickly replaced.
3Reliability
If defective parts in traditional control systems need to be replaced, then system functionality is restored, but downtime increases due to complex localization and replacement procedures
Solution Approach 1:
The segmented control architecture with independent slave units enables precise localization of defective parts to specific modules. Each slave unit can be independently diagnosed and replaced without affecting other parts of the system, dramatically reducing maintenance downtime while restoring system functionality.
Solution Approach 2:
The control system incorporates self-diagnostic capabilities at the slave unit level, allowing the system to automatically identify and report defective components. This self-service feature accelerates the localization of problems and enables rapid replacement of faulty slave units, minimizing downtime.
4Reliability
If electrostatic precipitators are arranged in large numbers in ventilation ducts, then comprehensive air filtration is achieved, but control and monitoring become increasingly difficult
Solution Approach 1:
The large number of electrostatic precipitators are organized into multiple modules, each managed by a slave control unit. This segmentation transforms the monitoring task from managing individual precipitators to managing modular groups, significantly reducing control and monitoring difficulty while maintaining comprehensive air filtration coverage.
Solution Approach 2:
Multiple precipitator modules are combined under single slave control units, which aggregate control functions for groups of precipitators. This merging approach simplifies monitoring by providing centralized control points rather than requiring individual management of each precipitator, making the system easier to control and monitor.
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 efficient control and maintenance of multiple electrostatic precipitators, facilitating easy installation and error localization, with automatic configuration and parameterization, ensuring optimal operation and reduced downtime.
Implementation Method 1
Each of the node devices has a galvanic isolator for transmitting the supply voltage from the node device to the connected electrostatic precipitator
Implementation Method 2
the node device advantageously has one or more sensors and the configuration program is additionally set up to determine the coding of the connected electrostatic precipitator from the output signal of the sensor or from the output signals of the sensors
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to control electronics for multiple electric filters of a building ventilation system, comprising at least one master device (1) and node devices (2), wherein a node device (2) can be connected to each of the electric filters. One or more chains (3) of node devices (2) can be connected to the master device (1) or each of the master devices (1), wherein, in each chain (3), a first node device (2) can be connected to the associated master device (1) and the further node device (2) of the chain (3) can each be connected to the preceding node device (2), such that the node devices (2) of the chain (3) are connected to one another in series, wherein the master device (1) is the device preceding the first node device/s (2) of the connected chain (3) or the connected chains (3). The at least one master device (1) and the node devices (2) are configured to assign a unique place number to each of the node devices (2) of a chain (3). The transmission of the supply voltage from the node device (2) to the connected electric filter can occur via a galvanic isolator.