Pump-Throttle Temperature Control for Low-Resistance Flow
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Solution Overview
Problem
Existing temperature control systems for shaping tools and machines face high energy consumption, reduced pump service life, increased leakage susceptibility, and excessive pressure due to constant pump operation or difficulty in setting the optimum operating point, especially with multiple temperature control branches and throttle devices.
Innovation Solution
A temperature control apparatus that uses a throttle open-loop or closed-loop control device to set the degree of opening of throttle devices based on predetermined values, adjusting the pump system's delivery output to achieve an optimum operating point with minimized hydraulic resistance and energy consumption, by compensating for variations in delivery output and optimizing the operation of both the pump system and throttle devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a pump with constant delivery output is used, then the temperature control system can maintain stable pressure, but energy consumption increases and pump service life is reduced
Solution Approach 1:
The patent applies dynamics by transitioning from a static constant delivery pump to a dynamic system where the pump delivery output is continuously adjusted based on real-time throttle opening feedback. The pump operating point varies dynamically to match actual system needs, eliminating the energy waste of maintaining constant high pressure when lower pressure suffices.
Solution Approach 2:
The patent implements feedback control by measuring the actual throttle opening and using this information to adjust the pump delivery output. This closed-loop feedback ensures the pump operates at the optimal point, maintaining pressure stability only when necessary while reducing energy consumption by lowering pressure when the throttle is already sufficiently open.
2Stress or pressure
If a pump with constant delivery output is used, then pressure stability is maintained, but pump service life is reduced
Solution Approach 1:
The patent extends pump service life by making the pump operation dynamic rather than static. The pump delivery is continuously adapted to actual system requirements through feedback from throttle position sensing, preventing the pump from operating continuously at high stress levels that would reduce its service life.
Solution Approach 2:
The feedback mechanism monitors throttle opening and adjusts pump delivery accordingly, preventing excessive pressure buildup that would increase mechanical stress on the pump. This reduces wear and extends the stationary pump's operational lifespan while maintaining pressure stability only when the throttle requires it.
3Quantity of substance
If throttles are used to reduce quantitative through-flow, then desired flow control is achieved, but the optimum operating point of the pump cannot be easily set
Solution Approach 1:
The patent uses feedback control to automatically determine and maintain the pump's optimum operating point. A sensor measures the actual throttle opening, and this feedback signal automatically adjusts the pump delivery output, eliminating the need for manual setting or trial-and-error adjustment of the pump operating point.
Solution Approach 2:
The system performs self-adjustment by using the throttle position feedback to automatically set the pump delivery output. The pump system serves itself by adapting its operating point based on actual throttle opening, without requiring external intervention or complex manual configuration.
4Use of energy by moving object
If rotary speed-controlled pumps are used, then energy consumption can be reduced, but setting the optimum operating point becomes difficult with multiple temperature control branches
Solution Approach 1:
The patent applies segmentation by providing individual throttle devices and feedback control for each temperature control branch. This allows independent optimization of each branch while using a single pump, reducing the complexity of controlling multiple pumps and enabling energy optimization without sacrificing adaptability to different branch requirements.
Solution Approach 2:
The feedback control system simplifies the management of multiple temperature control branches by automatically adjusting pump delivery based on the combined effect of all throttle positions. This eliminates the need for complex manual coordination of multiple pumps or complex control algorithms, achieving energy optimization through straightforward feedback from throttle sensors.
Data Source
AI summary
A temperature control apparatus includes a temperature control branch connected to a feed line for a temperature control medium, a pump system including a pump for conveying the medium, a pump open-loop or closed-loop control device for controlling the output of the pump system, a throttle device having a variable degree of opening for throttling a quantitative through-flow of the medium in the temperature control branch, and an open-loop or closed-loop control device with the degree of opening of the throttle device as a setting value and with a control variable from the group: degree of opening of the throttle device, temperature, temperature difference, through-flow, pressure or a physical value to be derived from that group. The pump open-loop or closed-loop control device is configured to control an operation of the pump to adjust the delivery output of the pump system depending on the degree of opening of the throttle device.