Modulating Liquid Pump Piston Stroke Control
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Solution Overview
Problem
Existing modulating pumps for oil burners cannot be controlled in an intermediate mode between high and low power, and existing solutions for regulating pressure are either costly or unsuitable for low-power burners, while existing electronically modulating pumps only regulate fluid volume and not pressure.
Innovation Solution
A modulating liquid pump using an electromagnetic pump with an electric control device to adjust the piston stroke, combined with additional gear pumping means, allowing for continuous control of liquid pressure between minimum and maximum settings through a modulated electrical voltage signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an electromagnetic pump with electric control device is used to regulate piston stroke, then continuous pressure control between minimum and maximum is achieved, but device complexity increases
Solution Approach 1:
The patent replaces traditional mechanical pressure regulation systems with an electromagnetic pump controlled by an electric control device. The electric control device receives a control signal and adjusts the piston stroke accordingly, enabling continuous pressure control without complex mechanical linkages or manual adjustment mechanisms.
Solution Approach 2:
The patent controls pressure by changing the stroke parameter of the piston through electromagnetic actuation. By varying the piston stroke length in response to control signals, the system achieves continuous pressure regulation from minimum to maximum settings, transforming a mechanical dimension (stroke length) into a controllable parameter.
2Productivity
If additional gear pumping means are added to the electromagnetic pump, then liquid delivery is improved, but device complexity increases
Solution Approach 1:
The patent combines an electromagnetic pump with additional gear pumping means to create a hybrid pump system. The gear pump components work together with the electromagnetic piston pump to improve overall liquid delivery capability, merging two different pumping mechanisms into a single integrated system.
Solution Approach 2:
The additional gear pumping means serve multiple functions: they supplement the electromagnetic pump's delivery capability, provide continuous liquid flow during piston cycles, and enhance the system's ability to handle varying viscosity liquids. This multi-functionality justifies the added structural complexity.
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 continuous control of liquid pressure at any setpoint between minimum and maximum pressure, providing a cost-effective and efficient solution for modulating oil burners, suitable for low-power applications.
Implementation Method 1
an electromagnetic pump arranged between the inlet port and the outlet port comprising a piston to pump said liquid
Data Source
Figure 1
AI summary
The present invention relates to a modulating liquid pump. This pump (2) comprises an inlet port (4) for receiving a liquid and an outlet port (6) for delivering said liquid, an electromagnetic pump (12) placed between the inlet port and the outlet port and comprising a piston (18) for pumping said liquid, said modulating pump further including a regulating means (28), for regulating the pressure of the liquid. This pump is noteworthy in that said regulating means (28) is of the electric type and is capable of regulating the travel of said piston (18) according to an electrical setpoint signal (Vc). Application to fuel oil burners.