Multi-setting pump with delayed switching control
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Solution Overview
Problem
Existing multi-setting pumps require additional programming in external controllers to manage setting switching, which is cumbersome and prone to instability due to frequent switching and potential system shocks.
Innovation Solution
A multi-setting pump with an integrated control unit that includes a setting control module, capable of automatic setting switching with delayed switching functions to prevent erroneous changes and synchronize with other actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a programmable controller (PLC) is used to control setting switching, then setting switching can be achieved, but additional programming work is required and system complexity increases
Solution Approach 1:
The patent integrates the setting control algorithm directly into the multi-setting pump's own control system, merging the pump control and setting switching control into a single integrated unit. This eliminates the need for external PLC programming while maintaining full setting switching functionality, thereby reducing system complexity and ease of operation.
Solution Approach 2:
The pump's control system automatically performs setting switching based on pre-configured control algorithms and operating conditions, without requiring external controller intervention or additional programming. The system serves itself by autonomously monitoring operating parameters and executing setting changes according to embedded logic.
2Adaptability or versatility
If frequent setting switching is performed to adapt to changing operating conditions, then pump adaptability improves, but pump output stability deteriorates due to momentary shocks and interference
Solution Approach 1:
The control algorithm incorporates pre-set switching conditions and delay mechanisms that are configured in advance. Before executing a setting switch, the system evaluates multiple operating parameters against predetermined thresholds and applies delay logic to filter out momentary shocks, ensuring that switching occurs only when truly necessary and stable.
Solution Approach 2:
The system continuously monitors operating conditions such as pump pressure and rotation speed, using this feedback to dynamically adjust setting switches. The control algorithm processes real-time feedback data against predefined criteria, enabling adaptive switching while maintaining stability by responding only to sustained changes in operating conditions.
3Speed
If setting switching is performed immediately when conditions are suitable, then response speed improves, but timing synchronization with other actuators deteriorates
Solution Approach 1:
The control system incorporates dynamic delay adjustment capability, allowing the switching timing to be flexibly adjusted based on operational requirements. The delay parameter can be modified to synchronize pump setting changes with other actuators in the system, balancing rapid response with coordinated timing.
4Adaptability or versatility
If multiple parallel setting conditions are implemented to cover various operating situations, then system adaptability improves, but control algorithm complexity increases
Solution Approach 1:
The control algorithm divides multiple operating conditions into distinct, modular segments or modules. Each parallel condition is treated as an independent evaluation unit with its own criteria and switching logic, allowing the system to handle various operating situations through structured, organized condition checks rather than a monolithic complex algorithm.
Data Source
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AI summary
A multi-setting pump, comprising a pump part (1) driven by a motor (2), the multi-setting pump having multiple settings which at least comprise a high setting and a low setting, wherein the multi-setting pump further comprises a control unit (3), comprising: a control board for controlling operation of the motor and the pump part, a frequency changer for controlling a drive current of the motor, and a setting control module integrated in the control board or frequency changer; a low-setting operating situation condition and a high-setting operating situation condition are set in the setting control module; the setting control module is configured to perform a down-switching operation after a down-switching delay when the low-setting operating situation condition is met, and/or perform an up-switching operation after an up-switching delay when the high-setting operating situation condition is met.