Liquid Ejection Optional Unit Power Circuit for Voltage Stability
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Solution Overview
Problem
The stability of optional units for liquid ejection apparatuses, such as heater units, is compromised when used in regions with varying commercial power supply voltages, leading to instability in operation due to voltage changes.
Innovation Solution
Incorporating a rectifier circuit with a first drive power output circuit that includes capacitors, inductors, diodes, and switching elements, which control the voltage of the drive power signal to maintain stability regardless of input voltage variations, and optionally using additional drive power output circuits with parallel switching elements to reduce power losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple power supply connection is used, then the device complexity is reduced, but the operational stability deteriorates when commercial power supply voltage varies
Solution Approach 1:
The patent applies parameter changes by using a switching element to dynamically adjust the connection state of the capacitor and inductor in the power supply circuit. Based on the detected commercial power supply voltage level, the control circuit changes the circuit configuration parameters - connecting the capacitor when voltage is low and disconnecting it when voltage is high, thereby maintaining stable output voltage and improving operational stability across different power supply environments.
2Reliability
If voltage regulation circuitry is added to maintain stability, then operational stability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by using a switching element that can dynamically change the circuit configuration based on real-time voltage detection. The control circuit monitors the commercial power supply voltage and dynamically connects or disconnects the capacitor and inductor to match the voltage level, creating an adaptive power supply system that maintains stability without requiring complex continuous regulation circuitry.
Solution Approach 2:
The power supply circuit is segmented into distinct functional modules: a detection unit for monitoring voltage levels, a control unit for decision-making, and a switching unit for executing circuit reconfiguration. This segmentation allows each module to perform its function independently and simplifies the overall design and maintenance of the voltage regulation system.
3Loss of energy
If switching elements and energy storage components are added, then power loss is reduced through efficient switching, but device complexity increases
Solution Approach 1:
The patent employs periodic action through the switching element that rhythmically connects and disconnects the capacitor and inductor based on voltage conditions. This periodic switching operation enables efficient energy transfer and storage, reducing power losses by ensuring that energy is stored during low-voltage periods and released during high-voltage periods, thereby optimizing power utilization.
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
The solution ensures that the operational stability of the liquid ejection apparatus is maintained across different power supply environments by controlling the drive power signal voltage, reducing the impact of voltage changes and minimizing power losses through efficient switching operations.
Implementation Method 1
a rectifier circuit to which a commercial power supply is input and which outputs a rectified voltage signal
Implementation Method 2
the first drive power output circuit includes a first capacitor, a second capacitor, a first inductor, a first diode, and a first switching element
Implementation Method 3
the first drive power output circuit includes a first capacitor, a second capacitor, a first inductor, a first diode, and a first switching element
Implementation Method 4
a first switching element... the first drive power output circuit outputs a first drive power signal to a first drive unit
Data Source
AI summary
An optional unit for a liquid ejection apparatus includes a drive power output circuit that outputs a drive power signal supplied to a drive unit in which one end of a first capacitor, a cathode terminal of a diode, and one end of a inductor are coupled to a first node, the other end of the inductor and one end of a second capacitor are coupled to a second node, the other end of the second capacitor, an anode terminal of the diode, and one end of a switching element are coupled to a third node, the other end of the first capacitor and the other end of the switching element are coupled to a fourth node, the rectified voltage signal is supplied to the first node, and the drive unit has one end coupled to the second node and the other end coupled to the third node.