Independent Water Pump Power Cutoff for Cooling System Leaks
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Solution Overview
Problem
Conventional water pump control systems fail to stop running in time due to sensing control loop failures, leading to severe abnormalities in cooling systems.
Innovation Solution
A water pump control device with dual power supplies and a switching module that receives information from sensors or an emergency switch to independently control the power switch, allowing the water pump to be shut off promptly in emergency situations, while maintaining power to other system components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single power supply is used for both the control system and the water pump, then the system structure is simple, but the water pump cannot be independently stopped in emergency situations
Solution Approach 1:
The patent divides the power supply system into two independent parts: a system power supply for the control system (sensor, switching module) and a water pump power supply for the water pump. This segmentation allows the control system to independently monitor and stop the water pump in emergency situations without affecting the overall system power, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The patent introduces a switching module as an intermediary component that receives signals from the sensor and controls the power switch to disconnect the water pump power supply. This intermediary enables independent control of the water pump power, allowing emergency stopping while maintaining a relatively simple overall system structure.
2Reliability
If the sensing control loop is simplified, then the device complexity is reduced, but the water pump may not stop running in time when abnormalities occur
Solution Approach 1:
The patent implements a self-service control mechanism where the sensor directly monitors system parameters and automatically triggers the switching module to stop the water pump when abnormalities are detected. This self-service approach eliminates the need for complex multi-step control loops while ensuring timely response, resolving the contradiction between reliability and complexity.
3Ease of operation
If dual power supplies are implemented, then the water pump can be independently controlled in emergencies, but the system complexity increases
Solution Approach 1:
The patent segments the power supply into two independent sources: system power supply for control components and water pump power supply for the motor. This segmentation provides independent control capability while keeping each power supply simple, thus achieving ease of operation without excessive complexity.
Solution Approach 2:
The patent extracts the water pump power supply from the system power supply, creating an independent power path for the water pump. This extraction enables emergency stopping by simply disconnecting the water pump power through the power switch, providing ease of operation with minimal added complexity.
Data Source
AI summary
A water pump control device is disclosed, in which a switching module powered by a system power supply receives information from a sensor and/or an emergency switch to generate a control signal to control a power switch to connect or disconnect a power supply path between a water pump and a water pump power supply according to the control signal. Therefore, in a cooling system, in the event of liquid leakage, abnormal water level, or an alarm signal issued by an emergency switch, the switching module can independently cut off the power source of the water pump via the power switch, such that the water pump can effectively stop running and avoid the scope of influence is expanded. At the same time, components other than the water pump can still be powered and operated as usual, avoiding other control abnormalities caused by power outages of the water pump.