Pump Delivery Rate Control for Stable Mold Temperature Flow
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Solution Overview
Problem
Mold temperature control systems in molding machines require a more simplified method to determine the target delivery rate of temperature control media, as existing systems are complex and in need of improvement for energy efficiency and regulation.
Innovation Solution
The method involves regulating the temperature control volume flow using throttles as actuators, measuring the pump system's delivery flow, and adjusting the pump's delivery rate independently of the temperature control volume flow to determine a constant delivery rate, which can be either reduced or increased, allowing for the identification of the target delivery rate based on initial settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pump system is regulated together with the temperature control volume flow using throttles, then the temperature control is achieved, but the system complexity increases and energy efficiency is reduced
Solution Approach 1:
The patent separates the pump control function from the temperature control volume flow regulation. The pump delivery rate is controlled independently through separate control means, while throttles in the temperature control channels handle only the distribution of that flow. This segmentation eliminates the need for complex coupled regulation and allows each component to operate optimally and independently.
2Use of energy by moving object
If the pump delivery rate is reduced to save energy, then energy efficiency improves, but the temperature control volume flow regulation becomes more complex
Solution Approach 1:
The patent extracts the pump delivery rate control from the temperature control volume flow regulation system. By providing independent control means for the pump, the energy optimization function is separated from the thermal regulation function. This allows the pump to be operated at energy-efficient points without complicating the temperature control channels, as the throttles simply distribute the pump's output without needing to compensate for pump variations.
Data Source
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Figure 3
AI summary
Method for finding a target delivery rate of a pump system (7) comprising at least one pump (10) for conveying a temperature control medium through at least one temperature control channel (4, 5) of a mold (6) by means of the at least one pump (10), wherein e) a control of at least one temperature control volume flow through the at least one temperature control channel (4, 5) is carried out according to a controlled variable using at least one throttle (12) as an actuator such that the at least one temperature control volume flow remains essentially constant, f) a delivery flow of the pump system (7) is measured, g) the at least one pump (10) is controlled from a starting delivery rate independently of the control of the at least one temperature control volume flow such that a delivery rate of the pump system (7) is reduced to a reduced delivery rate, and h) it is then checked whether the delivery flow remains essentially constant and, i.if this is the case, the reduced delivery rate is determined as the target delivery rate, or, ii. if this is not the case despite the regulation of at least one temperature control volume flow, the starting delivery rate is determined as the target delivery rate.